What are the application of molecular sieve? Where can 3A molecular sieve, 4A molecular sieve, and 5A molecular sieve be used? This article will give you a detailed introduction to these types of molecular sieve and their applications.
The pore diameter of the 3A molecular sieve is 3A, which is mainly used for adsorption of water and don’t adsorb molecule with diameter more than 3A. According to the characteristics of industrial application, molecular sieve has fast adsorption speed, number of regenerative times, fragmented strength and anti -pollution capacity, which improves the molecular sieve. The service life of molecular sieve was extended by efficiency and extended the use of molecular sieves. It is the essential adsorption materials necessary for the deep drying, refining, and aggregation of the gas and liquid phase in the oil and chemical industry.
Main Application Areas:
- Drying of various liquids (such as ethanol)
- Drying of the air, drying of insulating glass
- Drying of the refrigerant
- Drying of natural gas and methane gas
- Drying of unsaturated hydrocarbons and cracking gas, ethylene, acetylene, acrylic, butadiene
Regeneration:
Xintao molecular sieve Type 3A can be regenerated by either heating in the case of thermal swing processes; or by lowering the pressure in the case of pressure swing processes.
To remove moisture from a 3A molecular sieve, a temperature of 200-230°C is required. A properly regenerated molecular sieve can give moisture dew points below -100°C.
The outlet concentrations on a pressure swing process will depend on the gas present, and on the conditions of the process.
Application of 4A molecular sieve
The pore diameter of the 4A molecular sieve is 4A, absorb water, methanol, ethanol, hydrogen sulfide, sulfur dioxide, carbon dioxide, ethylene, acrylin. It don’t adsorb molecule with diameter more than 4A, the choice of water is higher than any other molecule. It is one of the largest molecular sieve varieties in the industry.
4A molecular sieve specific application:
- Dryingof air, natural gas, alkyl, refrigerant and other gases and liquids
- The production and purification of the storing gas
- Static and drying of drug packaging, electronic components and easy -to -deteriorate substances
Regeneration：
4A molecular sieves can be regenerated by heating or to expand the regeneration process by reducing pressure. Water removing water from 4A molecular sieve, temperature 250-300°C is necessary.
Application of 5A molecular sieve
XINTAO 5A molecular sieve is a chemical substance. The pore diameter is 5A, which is about 0.5nm. 5A molecular sieve can be adsorbed by any molecule of less than the aperture, which is generally called calcium molecular sieve. In addition to the effects of 3A and 4A molecular sieves, it can also adsorb the C3 -C4 positive alkane, chloroethane, bromohide, butanol, etc., which can be applied to the separation of positive isopic hydrocarbons, transformer adsorption separation and water. Co -adsorption with carbon dioxide.
XINTAO 5A molecular sieve is absorbed by the material at the molecular level, which can adsorb to 22 % of water . Its adsorption principle is similar to the chromatography, but the molecular combination that does not change the substance.
Application:
- Dryingnatural gas, desulfurization, and dehydrated carbon dioxide.
- Separation of nitrogen oxygen, separation of nitrogen hydrogen, oxygen, nitrogen and hydrogen.
- Petroleum is separated from the hydrocarbon and ring hydrocarbons.
