Ever since the existence of refrigeration and HVAC systems, we have often come across a term known as the refrigerant. Have you ever wondered what exactly a refrigerant is? For those who don’t know about it, here is the bookish definition of the term refrigerant.
It is basically a particular substance or just a mixture of substances that are formed in the fluid or gaseous forms. The refrigerant has its primary use in the heating pumps and the refrigeration cycles. Most of these cycles see the transformation of Refrigerants from liquid to gas. Some of the notable examples of refrigerants that we could find would be fluorocarbons, sulfur dioxide, ammonia and so much more. This post is dedicated to discussing some of the applications of refrigerants or freezers, the molecular sieve filter drier that is used in the refrigeration systems and so much more. You will also get to learn a lot about the filter drier installation that helps in the extraction of moisture from the refrigerants.
Commercial and Personal Uses Of Freezer and Refrigerants
The refrigerants like carbon dioxide, ammonia, and the other non-halogenated portions of hydrocarbons are not responsible for the depletion of the ozone layers. These refrigerants also don’t have any or just a little bit of potential in harming the global climate as well. Hence these freezers or refrigerants are mostly used in the proper air conditioning systems that are provided in the buildings, leisure, and sports facilities. Apart from that, these freezers also have a very important use in the pharmaceutical industries, automotive organizations and most importantly the food industry as well.
The emissions that come out from the air conditioning systems provided in the automobile industries can, however, be considered as a particular growing concern only because they have a significant impact on the change of the climate. There have been some changes made for that as the unions have successfully managed to phase out most of the refrigerants that have the potential for global warming in any way.
Using the CO2 refrigerants is a very beneficial alternative that people can use since it is pretty much non-flammable and hence will not be able to harm the ozone layers. So, these refrigerants might just have better use in the cars, hot water pumps, commercial refrigeration, residential cooling, and the vending machines as well.
Importance of Freezer and Refrigerant in Daily Life
As we all know, there are many different uses of having refrigerants and freezers in the daily life of the people. Most of these refrigerants surely have a lot of commercial uses, but they can also be used in the day-to-day lives of the people.
For example, freezers are a very important part of the refrigeration cycles. So, this means that they are a great addition to the refrigerators in the homes of people. These refrigerants help in keeping the food in the home quite fresh and healthy to eat at any time. Most of the times, having fresh fruits and vegetables is really important. The refrigerants help in controlling the temperature of the refrigerator and hence help in the cooling of the foods. With the low temperature, there is no possibility for the growth of bacteria that plays a very important role in the degradation of the food.
Another one of the most important uses of having refrigerants for our daily lives is that they help a lot in enhancing the air-conditioning system of the houses. There is no doubt about the fact that air conditioning is very important, not just for the people but the electronic devices as well.
Keeping the devices cool and in a very low temperature helps in the extension of their lives. Most of the electronic devices also come with a separate air conditioning system which uses the refrigerants in order to maintain a cool temperature.
Apart from that, the HVAC systems in the homes of people also use the refrigerants in order to make sure that the air that comes out is always cool and refreshing.
Freezer & Refrigerants Major Malfunctions
Most of the chillers and the air-conditioning systems suffer from the problems of reduced efficiency because the freezers and refrigerants get contaminated with excess water, oil, acid, and air as well. if these contaminants are available on the refrigerants in more quantities, then it can lead to several issues such as failure of the systems.
Oil is one of the components that can provide some harmful effects to the working of the cooling systems in the devices. However, not much has actually been done in order to locate or remove the oil that is present in the cooling system. There are several reasons behind that. Oil might just decrease the efficiency of the system but it necessarily doesn’t do any harm other than that. Oil can be considered a lesser harmful contaminant when compared to the others such as moisture and acid.
When we talk about the harmful contaminants that actually lead to the destruction of the systems, then acids are the first things that come to mind. The acid development in these freezers or refrigerants on the heat pumps, refrigerators, air conditioners, and other devices can be responsible for the life-shortening of the refrigerant.
There are many possible reasons for the formation of acids. It could be due to the different chemical reactions that happen in between the different materials and components. Most of the times, the impurities inside the refrigerants can also be responsible for the creation of acids. Apart from that, increase in the temperature also accelerates the formation of acids in the refrigerants
Too Much Moisture
The presence of moisture in these freezers and refrigerants is certainly one very common problem that can take place. It will also be very expensive to treat as well. The refrigerant that has moisture in it will not just affect the efficiency of the refrigeration system. It will also be responsible for some serious long-term damage to the system in many different ways. If the moisture is not detected and removed with the help of filter drier in the refrigeration system, then it can result in several expensed related to the repair and downtime of the system as well.
Moisture can lead to the formation of ice in the valves which cause further blockage. Also, it can make a mixture with the oils present inside the system compressor in order to form harmful acids and then attack all the motor windings which will further lead to burnout. Moisture also has an effect on the bearings as it makes them seize. Apart from that, it can also block the flow of the oils as well.
So, these are some of the dangerous malfunctions that can occur in the freezers and the refrigerants. It is important to use a refrigerator filter drier to solve these problems. We will get to that in a while.
How Is Acid Formed In Refrigerants Due To Moisture Issues?
When it comes to the effects of moisture, the acid formation is one of the most common effects that can cause harm to the refrigerants and ultimately the cooling system as well. The moisture accumulates in the refrigerants in different degrees. With the increase of moisture, it starts to mix up with the other materials present in the refrigerant.
As a result, the mixture is then open to react with anything. Most of the times, it happens that the mixture of moisture and the refrigerant reacts along with the different lubricating oils and various other materials that are present in the system. This leads to the formation of strong compounds that have a corrosive nature.
We all know that the chemical reactions that happen in the system often lead to the formation of acids. These acids that are formed can actually damage the valves, bearing journals, seals, and other important parts of the cooling system. Sometimes, the acids present can also cause the compressor to burn completely and thus degrading the cooling efficiency of the system.
With the help of the molecular sieve present in the filter driers that are used for the extraction of moisture, these moisture issues can be prevented. Let us get to know a little bit more about it.
Troubleshooting The Acid Formation Due To Moisture Issues
We all surely know by now that the major reason for the formation of acids in the refrigerants would have to be the moisture that is present in these components. However, there is a solution to that problem as well. The filter driers with molecular sieve RH3 and molecular sieve RH9 are some of the options to go for.
One of the primary functions of the filter drier is to make sure that the moisture is completely removed from the refrigerant systems. There are many different sources from which moisture will be able to enter the system. Improper evacuation due to trapped air and leaks in the systems are some of the reasons.
The moisture that is present in the refrigerant system will be responsible for the metallic corrosion of the components. Apart from that, the moisture in the system also has the potential to form several organic acids which in turn will affect the operation of the components.
In order to make sure that the formation of the acids is minimized, it is imperative to stop or pause the formation of moisture in the refrigerant. This can easily be done with the help of a filter drier. The filter drier uses the molecular sieve in order to make sure that the moisture is taken out from the refrigerant. We will get to know about that in a while.
Selecting The Desiccant For The Filter Drier: Molecular Sieve Introduction
For the removal of the components that might harm the refrigerant, the filter driers are used by every single industry. However, without the use of the proper desiccant, the filter driers will not be of any use. Here we are going to provide you with an introduction to a filter drier desiccant which is known as the molecular sieve.
When you are selecting the
perfect desiccant for the filter-drier, there are many different factors that are supposed to be considered. The water absorbing capacity, the lubricant and refrigerant compatibility and so much more factors need to have special importance when selecting the proper desiccant for the filter drier. If the proper desiccant is not selected, then you might have to go for a refrigerator filter drier replacement.
Let us start with the water capacity, people. The water capacity can be defined as the ability of the desiccant to hold the water. We all know that the function of the filter drier is to make sure that the levels of moisture in the refrigerants always remain low. So, the more water capacity a desiccant has, the better it will be for the refrigerant.
The molecular sieve helps a lot when it comes to retaining the amount of water. These sieves have got the highest capacity for water absorption and hence can be easily used for the task. The molecular sieve would absorb the moisture and help in keeping a low concentration of the refrigerant water. The strong bonds that take place between the moisture and the molecular sieve are the reasons behind that.
It is by keeping the water levels in the system very low, the corrosion problems, freeze ups, and the formation of acids can be effectively minimized. There is the activated alumina which can be used in order to retain a little amount of all the moisture, but the retention capacity isn’t really that great as is seen in the amazing molecular sieve that we have.
It is also recommended that when it comes to the molecular sieves in the filter driers, they help in water removal in the most efficient way.
Apart from the water capacity, the lubricant and refrigerant compatibility also plays a very important role in the selection of a particular desiccant. The organic and the inorganic acids form due to the reactions that happen in the systems. These acids have the potential to damage the entire refrigerant system. Without having a proper desiccant these acids can also enter the valves and other important areas to cause severe damage there as well.
This is where the molecular sieves come to help again. The acid removing the capacity of the desiccant depends on the size of it. If you want to know all the about the molecular sieve sizes, then you can take the help of the molecular sieve size chart.
Molecular Sieve Usage in Refrigerant Drying -http://molecularsievedesiccants.com - YouTube
The different pore sizes present in the molecular sieve help in the removal of the molecules of organic acid in the best way.
There is another factor that would decide the selection of the desiccant for the filter drier. The desiccant strength is a very important factor to consider. The desiccants that are inserted in the refrigerant filter driers need to be quite strong so that they can resist the effects of the different surges and vibrations that are caused in the system. The molecular sieve XH-7 receiver drier certainly has the strength that is required in order making sure that the changes in the systems don’t have any negative effects on them.
Molecular sieve XH 7 and XH 3 are some of the molecular sieves that are most commonly used in the refrigerant systems due to their moisture absorption capabilities. These honey-comb shaped structures are very uniform in the size and help in the absorbing of the moisture molecules that are present in the refrigerants.
If you select the proper filter drier along with the perfect desiccant, then absorbing the larger moisture molecules as well as the smaller molecules will be pretty easy. Another great thing about the molecular sieves is that they are entirely coated with some positive charges which are known as the cation. These cations help in attracting the molecules that are polarized, just like water.
So, there is no doubt about the fact that the filter driers that have molecular sieves in them will be able to keep moisture away and thus prevent freeze-ups, acid formation, and several other issues in the refrigerant system.
Does Size Matter When It Comes To Choosing A Filter Drier
Most of the times, it happens that the differences in the size of the filter driers create confusion in the minds of the people. Now, the question that arises in here is that whether the filter drier size is actually that important or you need to focus on the other factors more.
To be honest, the size of the filter drier is not really that big a deal when it comes to the consideration of the other factors. Although there is a direct relation between the capacity of the filter and the volume, it is also true that the type of the desiccant that is used in the filter drier also plays a very important role in the selection of the filter drier.
Always going for the biggest of the filter drier might not be the option that will always provide with the best of the results. Even if you do that, you need to make sure that you know how to replace filter drier so that you don’t face any problems in the future. Knowing the filter drier location is also very important in order to replace it.
Working Principles Of Filter Drier With The Help Of Molecular Sieves
There is no doubt about the fact that the molecular sieves are some of the best desiccants that can be used in the filter driers. That is because of the high water capacity that they have. When it comes to discussing the working principle of the filter driers with the help of molecular sieves, there are several things that come to mind.
The molecular sieve that is present in the filter drier has a crystalline structure that helps in the absorption of the water that is present in the refrigerant systems. Apart from that, the molecular sieves also play a very important role in removing the organic acids which are caused due to the contamination of moisture and the other components that are present in the refrigerant systems.
Furthermore, these sieves are the perfect solution for the compressor burns, corrosion problems, acid formation, and a plethora of other problems that often occur in the refrigerant systems as well.
That is not it as the filter driers also take the help of molecular sieve in the filtration processes as well. The molecular sieves help in removing the solder particles, scales, and various other foreign elements that can block the compressors and the valves. Thus, it can be safely concluded that these sieves play a very important role in the filtration of the refrigerants. The larger and the smaller particles are caught by the pores of the molecular sieve, thus providing a clear way for the movement of other essential materials.
Knowing all about the molecular sieves and its use in the filter dries of the refrigerant systems will surely provide you with an idea about how the system works and what can be done in order to improve on the issues that crop up with the modern-day refrigeration systems. With the help of the proper desiccants such as molecular sieves, users will be able to ensure that their air conditioning and refrigeration systems stay in a proper state always. For those who want to know about the molecular sieve price, going to the best molecular sieve suppliers would be recommended.
About Sorbead India
Sorbead India, a company created in the year 1996, is one of the best molecular sieve suppliers in India. Known to be one of the leading names in the history of desiccant suppliers in India, this company has got the reputation that cannot be matched by anyone else.
The ISO 9001-2000 Certified Company currently holds the reputation of being a reliable source for high-quality desiccants such as molecular sieves and other components that are manufactured by some of the most trusted hands and production units.
The company stands face-to-face with top-class support and quality for the customers and is famous for creating desiccants for the companies of very high stature. The services of the company are always dedicated to the welfare of the industries and will remain the same.
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A lot has been written about molecular sieves and their role in keeping moisture away from packed items and industrial operations. At both these places and more, molecular sieves work around-the-clock to remove excess vapour molecules from the surroundings so that the packed items are not affected by water vapour. Molecular Sieves are available in the market in three forms- bead, balls and granular. All these forms of molecular sieve have uniform sized pores, which allow the passage of only same-sized molecules (water vapour) and stop impurities from passing through. There are two major benefits of using molecular sieves as a desiccant. One, as mentioned above, the uniform-sized pores and second, the large surface area. While the same-sized pores attract the molecules, the big surface area ensures that more moisture molecules are absorbed over more domains.
Molecular Sieves- Their Structure, Composition
Now let us take a closer look at the structure and composition of molecular sieves. The pore size of Molecular Sieves are usually measured in angstroms. Depending on the pore size, molecular sieves are graded into various categories. These include 3A, 4A. 5A, 10A and 13 X. All these various grades of molecular sieves have different purposes, depending on their pore size. Among molecular sieves, desiccants having pore size of less than 2 nanometres or 20 Angstrom are known as microporous materials. Macroporous materials are those molecular sieves having pore diameter of more than 50 nm. This is equal to 500 Angstrom.
Molecular Sieves have another category as well- mesoporous. This includes sieves having pore diameter between 2-50 nanometres. Silicon dioxide is one of the molecular sieves coming under this category. Examples of microporous materials are zeolites, active carbon, clay and porous glass. Macroporous materials include mesoporous silica having pore size between 200 and 1000 Angstrom.
Uses of Molecular Sieves
Molecular Sieves have many applications. The major one being in the storage and packaging industry for the removal of moisture from the surroundings so that the packed items are not affected by the presence of vapour molecules. Another field where Molecular Sieves are widely used is the petroleum industry. Here the molecular sieve is used to dry gas streams. The presence of moisture in gas streams can lead to ice formation and corrosion so Angstrom molecular sieve is used to maintain proper moisture levels in the gas streams. As molecular sieves are known to the better drying agents, it is highly recommended to buy high quality molecular sieve products from suppliers like Sorbead India.
Molecular sieve finds use in the laboratory for chromatography purposes like drying solvent. Molecular sieves are used for a wide range of catalytic applications. They form the stationary phase of the chromatography process, which absorbs the different components of any given mixture. The chromatography process is used to catalyze isomerisation, alkylation and epoxidation. In industries, it is used for processes like hydrocracking and fluid catalytic cracking. This is one of the main reasons why Molecular Sieve exporters cater to high demand from other countries.
Molecular Sieve 3A is an Alkali metal Alumino-Silicate, Potassium form of type 3A Crystal Structure. Having pored size of 3A or 3 Angstroms molecule larger than 3A will not be able to be adsorbed. Basically 3A is formed when part of the Sodium Ions of the 4 Angstroms sieve are replaced by Potassium Ions.
The Adsorbents that we manufacture are of high quality and are manufactured according to specific application and accordingly are allotted its Grade. Having manufacturing experience of adsorbents since past 20 years the main advantage that Our Molecular Sieve 3A provides is High Adsorption Rate, High Crushing Strength and High Contamination Resistance. Moreover the adsorbents that we provide would have extended product life due to its Quality.
Molecular Sieve 3A is available in Beads and in Pellets form. Molecular Sieve 3A is most selective type of Molecular Sieve and is commonly used in olefin crackers to dehydrate the feed stream before cryogenic separation of LPG. Some of its application is mentioned as below:
2)Natural Gas Drying.
3)Drying Cracked Gas.
4)Dehydration of Unsaturated Hydrocarbon.
5)Drying of Kerosene & Jet Fuel
6)Drying of Air in Insulated Window.
7)CO2 Drying and many more.
Molecular Sieve 3A can be regenerated by purging or evacuating at elevated temperatures. The degree of re-generation is dependent on the temperature and humidity of the gas.
SAFETY MEASURES: – Should be stored in dry room to prevent re-adsorption of water.
Molecular Sieve is a desiccant that has very small holes of precise & uniform size. These holes are small enough to block large molecules while allowing small molecules to pass.
Molecular Sieve is available in 3A, 4A, 5A and 13x having named according to their pore diameter. The Molecular Sieve suited for adsorption of Mercapton from LPG is 13x having pore diameter of 10A. It is available in Beads and Pellets shape which is used in Aerosol Industries.
Because of its characteristic, 13x Molecular Sieve are widely preferred for removing Mercapton from LPG Gas. Being Global Manufacturer of desiccants since past 20 years we manufacture special grade for Mercapton removal which is having High Crushing Strength so that it can withstand its inlet pressure. We are proud to have long client list catering into Aerosol Industries for removing Mercapton from LPG. Molecular Sieve used for this purpose cannot be regenerated once used as it has been in contact with immense pressure.
In Aerosol Industries removal of Mercapton becomes necessary to avoid bad smell as deodorants and perfumes should have nice fragrance so to avoid this LPG Gas is passed through bed containing several columns filled with Molecular Sieve which would adsorb Mercapton from LPG thereby useful in manufacturing Aerosol Products.
Being Global Supplier for Molecular Sieve we would urge our clients to focus on quality of the product so that you can get accurate results.
Desiccants of all types are used worldwide in different industries like pharmaceutical and food packaging for the purpose of keeping products safe and fresh. Desiccants in different forms are used by individuals to keep items such as medicines (gel, creams or capsules) and packaged food stuff fresh for a long period of time. Moisture and humidity can really damage the package contents and therefore it becomes quite essential to use desiccants like molecular sieve 3A for keeping the packaging unit dry.
Molecular sieve 3A has a basic pore size of 3 angstrom. Any molecular which is bigger than 3A won’t be absorbed by the desiccant. One of the major reasons why this molecular sieve is used worldwide is that it is really helpful in making the ethanol dehydration process simpler. The benefits of Molecular Sieve 3A for Ethanol Dehydration include high contamination resistance, high adsorption speed, improving cyclic time and stronger crushing strength which offers an extended shelf life to the product. These types of desiccants can easily help in removing water content from gaseous and liquefied materials.
Key Applications: As a popular form of desiccant, molecular sieve 3A can prove to be helpful in making the following applications simpler.
Moisture removal in paint or PU plastic
Natural Gas Drying
Drying Cracked Gas
Static drying of glass units, whether gas filled or air filled
Dehydration of methanol and ethanol
Dehydration of ethylene, propylene and butadiene
Benefits One of the key benefits of using 3A molecular sieves is that they can be easily reused and regenerated. For regenerating the sieves, you just have to get rid of the adsorbed moisture present inside the unit. You need to keep 3A molecular sieve inside a tight container until it’s ready for use to avoid any kind of unintended humidity adsorption. Ethanol can be easily dried up to the isotropic point that includes 95.6% purity. The ethanol molecular sieve precisely adsorbs the moisture content from the given solution so as to make the mixture pure.
Sorbead India is a popular distributor of the FDA approved desiccants such as molecular sieve 3A. The company provides packaged desiccants in bulk quantities to various industrial sectors that are based in India. To get free samples of these high end desiccants, you can easily contact Sorbead India Located in India, the company ships the products as soon as possible so that you don’t have to wait for long to get your hands on the best desiccants in the market.
Molecular Sieve 13 X, which has the pore size, is about 10A. It can adsorb any molecular which has dimension smaller than 10A. It has very porous structure, and because of this special characteristic it has tendency to adsorb molecular which can be trapped in to its structure.
Molecular Sieve 13X is available in two kind of shape, one is Beads and other is Pellets. Also It is available in different size ranging from diameter of 1.5-1.7 mm, 3.0-3.3 mm in Pellets and for beads it is available in 1.7-2.5 mm as well as 3.0-5.0 mm.
Because of its characteristic, 13X Molecular Sieve for Mercaptan Removal from LPG Gas. Once LPG is passes through the bed of Molecular Sieve 13X, Mercapton from LPG can be adsorbed in pore structure. Thus LPG free from mercapton can be used to manufacturing of Aerosol products. Once 13XMolecular Sieve Adsorbed Mercapton, it will not be regenerated. Our Molecular Sieve 13X has high crushing strength more than 45N. Thus it will with stand with high inlet pressure. Apart from mercapton removal, our Molecular Sieve 13X can also be used in Paraffin sweetening, solvent drying, refrigerant purifying. One of the main advantages of our Molecular Sieve 13X is easy to handle and non corrosive and with stand with comparatively high temperature. Molecular Sieve 13X gives great mechanical strength and higher adsorption capacity.
Ethanol can be produced as a petrochemical by the hydration of ethylene or naturally by fermenting sugars with yeast. Industrial grade ethanol is often produced by the hydration of ethylene in the petrochemical industry. Ethanol has several end uses, such as coatings and inks for food and paper packaging, or emulsion resins for interior and exterior coatings.
Another important use is as solvent for synthesis of drugs, sterilizing products, etc. Today, many European countries are also using 10-15% blend of anhydrous ethanol in petroleum. Thus, the importance of dehydration or drying out of ethanol to completely remove any presence of moisture increases significantly.
MOLECULAR SIEVE DEHYDRATION AND ITS ADVANTAGES
The molecular sieve dehydration technology utilizes the adsorption phenomenon, and this is used to produce anhydrous ethanol. The technology was first used in ethanol drying in the early eighties, and has since gained significant popularity. These Molecular Sieves for Ethanol drying are made of popular materials called zeolites (chemically known as aluminosilicates as well). The industrial process essentially involved passing the vapour form of ethanol through a column of the molecular sieve, which separates any water present in the vapour form from the ethanol by trapping its molecules onto its surface while allowing molecules of ethanol to pass through. Two different sub zones of operation are provided within a master transfer zone so that the two liquids part ways without any further interaction. Thus, the ‘drying out’ of ethanol is achieved.
Ethanol drying with the help of molecular sieve technology has become the most attractive option for industries due to some very compelling reasons. By reducing the energy requirements in comparison to other methods like azeotropic distillation, extractive distillation or membrane separation, the operating cost has been significantly reduced. This process also does not use any other chemical, hence eliminating the chance of contaminating ethanol with any other substance completely. The cost of the usage of such chemicals is also thus automatically eliminated altogether. This in turn also translates into higher alcohol recovery from the process, thus leading to greater revenue for the industry.
Ethanol produced from the hydration of ethylene by the petrochemical industry has several crucial industrial and commercial uses. This stems from its solvent properties, and hence the purity of ethanol is critical, for which it is often dried. Molecular sieves for ethanol drying are gaining popularity across the industry. This is so because Molecular Sieve Technology offers cost advantages and higher alcohol recovery rates.
We all know the importance of keeping moisture out of certain foods and pharmaceuticals. One of the most effective methods of doing so is with the use of molecular sieves. There are also several liquids and gases that interfere with their composition when they come in contact with them.
The Importance of Molecular Sieve Desiccants
Molecular sieve desiccants have a much more powerful action when it comes to keeping unwanted liquids and gases when they are packed. The other well known desiccants are comprised of either alumina or silica gel, but they are no match when compared to the potential that molecular sieves 4A have. They have one of the most effective drying and absorbing properties known in the industry.
Molecular sieves are especially famous for their water purifying properties. Being very small in size, they have huge absorbing qualities. When water passes through them, its molecules get caught in the tiny pores and allow only clean and pure water to pass through, absorbing all the impurities. This is also the case with many other liquids and gases where high purity is essential.
Molecular sieves come in various sizes and specifications; each one of them is used for a particular purpose. They can be classified as 3A, 4A, 5A and 13x categories. Each one of them has a special role to play and can be used to perform various drying, purifying or absorbing applications.
The Special Features of Molecular Sieves
One of the most important features of molecular sieves is that they have the special ability to absorb about 22% of their original weight of gases and liquids. Using the adsorption process, molecular sieves are one of the cheapest and most convenient forms of keeping moisture and toxic gases out of many chemical processes, or during the final packaging stages.
The desiccant packets made from molecular sieves offer maximum protection from moisture and are very versatile in their applications. They also offer the best value for money for this purpose. One of the important factors is that they offer an atmosphere for products that require a very low RH level (Relative Humidity). They are especially suited where very high temperatures are involved. They are also very easy to use, as they are packed very conveniently in nontoxic or reactive packing materials like polyester or polyethylene bags. Tyvek or cotton bags are also used to suit the end process.
Molecular sieves generally serve the purpose of blocking large molecules from interacting by preventing them from entering a compound. On the other hand they permit the entry of smaller user friendly molecules. Most of molecular sieves are used as desiccants.
The size of the molecules that are restricted and the ones that are permitted are measured in angstroms or nanometers. The general size of the molecules varies between 2 nm (nanometers) and 20 A (angstroms).
The Types of Molecular Sieves Used as Drying Agents
Molecular sieves that are used as drying agents are a combination of silica and aluminium tetrahedral. In order to be used as a drying agent, the water content has to be removed by heating the relevant substances to form equal cavities that can suitably absorb hydrated molecules of a certain size.
A mesh is used for this purpose and its dimensions will depend on the material that is to be dried. Generally, a 4-8 size sieve is used for the drying of gases, while a mesh size of 8-12 is mostly used for liquids. For powders, the 3A, 4A, 5A, and the 13x types of sieves can be used, depending on the exact composition of the powders in question.
Uses of the Molecular Drying Sieves
Molecular sieves as a drying agent have been known to be very effective in many synthetic organic procedures. Many products can be prevented from the condensation process that can severely damage their composition or the required properties. This is precisely where the molecular drying sieves play a vital role.
Most of these drying agents can remove the harmful effects of water or moisture, including alcohols that can include methanol and ethanol. Importantly, they can also prevent the formation of unwanted substances that can result as a byproduct of water or moisture.
The Importance of Solvent Drying
In the chemical or pharmaceutical industries it is critical that only the required amount of moisture or water is present to produce the ideal composition of drugs. It is important that the process of solvent drying is employed before the material is packed or sealed as the case may be.
Every molecule of a substance or a compound has its own unique structure and molecular size and their critical diameters. It is essential that these are kept in mind when dealing with them, especially for drying solutions.
When some sort of chemical separation process or any purification process is going on, it is important to separate the similar looking molecules with almost similar polarity. The purification doesn’t complete until the solution is free from these impurities. Under this circumstance, you need to use such substances that have the quality to absorb those elements that are actually causing the impurity. Molecular Sieve would be the perfect desiccant for such purposes.
The sieve desiccants are actually crystalline aluminasilicate which possess the powerful ability to act as a gas and liquid adsorbent. The sieve has three dimensional structure and this fact greatly depends on the silicon oxide and aluminum oxide polyhedral. Both these substances are able to produce great adsorbents and when you make a perfect blend of these two ingredients, the produced substance is sure to have some excellent quality of absorbing the impurities from natural gases. Thus, these substances have massive uses in various chemical refining processes.
The effectiveness of Molecular Sieve Adsorbents is really excellent. These are actually best for those products that are used vastly in natural gas refining, petrochemical and air drying industries. The performance of these adsorbents to separate the impurities is based on the molecular size. This adsorbent has the quality to absorb even the smallest size of molecules. The molecular sieves are available in different sizes and shapes and which includes balls, pellets and powder. Among the different types of these molecular sieves, 3A, 4A, 5A and 13X are widely used for a number of purposes. The effectiveness of these molecular sieves includes drying and cleaning technical gases.
The 3A molecular is generally used to desiccate several hydrocarbon and non-hydrocarbon gas and liquids. Apart from that, these molecular sieve adsorbent packets are also used to dehydrate alcohol and solvents. The application of 4A molecules is quite similar to that of 3A molecules except, these sieves are also used to purify the electronic components as well. The application of 5A molecules is to separate the chain of hydrocarbons in order to dry the natural gas and most importantly, to produce high level of pure hydrogen. It is basically used for commercial purposes of refining air, petroleum and gas for various industrial purposes.
The pellets and beads of 5A type molecular sieve adsorbents are also used to absorb the oxygen. More so, in petrochemical industries, it is used to separate the nitrogen from the air. The 13X molecular sieves are used for the dehydration of the natural gas, LPG, and other petrochemical liquids.
At Sorbead India, we have been offering the best quality molecular sieve adsorbents to render various purifying purposes. we produce quite a few variants of them to provide a tailor-made service according to your need. visit us for any queries.