molecular sieve activation

The molecular sieve activation adsorption or exclusive affected by molecular electrical function. Synthetic zeolite is according to the size of the molecules and polarity and the special function of selective adsorption, thus it can be to dry or purification of gas or liquid, this also is the basis of molecular sieve can be separated. Synthetic zeolite can meet the demand for adsorption and choose product features extensive industry, in industrial separation is also a large number of application to the synthesis of zeolite molecular sieves.

activated alumina water treatment has a great effect on catalytic science and technology. The invention of the '60 s molecular sieve cracking catalyst, triggered a technology revolution of oil refining industry. In the 70 s found that the shape-selective ZSM - 5 zeolite, makes the important petroleum refining and petrochemical industry a new industrial process (ethyl benzene, toluene disproportionation production, heavy oil dewaxing, etc.) development success. 80 s delay elements heteroatomic TS - 1 the double glazing desiccant molecular sieve catalytic oxidation "active field. In recent years, molecular sieve in "environmental catalytic application is also developing quickly. The successful application of molecular sieve in industrial catalysis process inspired molecular sieves synthesis, modification, characterization and application research of extensive. Molecular sieve modified the most basic way is through the secondary synthesis, impurity atoms with crystal to replace, change its skeleton. AEM for detection of nanoscale range of elements and their changes. Below by dealuminated Y zeolite molecular sieves and TS - 1 as an example, introduces the application of AEM in molecular sieves synthesis.

emergence of molecular sieve of

Automobile Desiccation Molecular Sieve

structure characteristics of zeolite Automobile Desiccation Molecular Sieve has a crystal surface as the solid skeleton, the internal cavity can have the effect of adsorbed molecules. Cavity between a channel are connected, molecules by the channel. Due to the crystallization properties of cavity, 3a zeolite molecular sieve pore size distribution is very uniform. Molecular sieve on the basis of the crystal to selective adsorption of molecules, the size of the internal cavity is adsorbed molecules of a given size and reject material larger molecules, so vividly called "molecular sieve".

The role of the double glazing desiccant

Strong ability of double glazing desiccant hygroscopic, used for gas purification processing, preservation should avoid direct exposure to the air. Stored for a long time and has moisture absorption of the molecular sieve before use should be recycled. double glazing window glass desiccant avoid oil and liquid water. When using, should try to avoid contact with oil and water. Industrial production in the drying process of gas, air, hydrogen, oxygen, nitrogen, argon, etc. With two adsorption dryer in parallel, a job, while the other can be regenerated. Alternating work and regeneration, to ensure the equipment run continuously. Dryer work at room temperature, air flushing regeneration under heated to 350 ℃.

The role of the molecular sieve drying

molecular sieve drying is a cubic lattice silicon aluminate compound, mainly composed of silicon aluminium by oxygen bridge connecting the empty skeleton structure, uniform in structure, there are a lot of aperture of concreted complete order, inner hole surface area is very big. In addition also contains electricity price lower metal ions and ionic radius is larger and combining state of water. Because the water molecules in the heated continuously losing, but crystal skeleton structure remains the same, has formed many of the same size of the cavity, the cavity has many of the same diameter pores is linked together, these small cavity diameter size uniform, can channel diameter smaller than the drying molecular sieve to the interior of the cavity, and the hole bigger than molecular excluded, so the molecules of different diameter size shape, the degree of different polarity molecules, the boiling point of different molecules, degree of saturation of different molecular separation, which have the function of the "screening" molecules, known as molecular sieve. Current molecular sieves in chemical industry, electronics, petrochemical, natural gas and other widely used in industry.

molecular sieve xh-5

molecular sieve xh-5 with a lot of white pellets capillary channel, there are many pores channel surface of these channels
Have a higher activity, to gas, vapor, liquid water has a selective adsorption ability. Dried under certain conditions
Depth of up to -70 ℃ below the dew point, in addition to water saturation can be heated at 175 ℃ -400 ℃ and resurrection, can many times,
Lubricants and other oils can also adsorb vapors from the contaminated oxygen, hydrogen, sulfur dioxide, and may make the catalyst or carrier.
Widely used in the drying device petrochemical, refining, electronics, ethylene, propylene, air, etc., the country has many hydrogen peroxide plant,
Fertilizer plant, oxygen plant and petrochemical refining units to use, and molecular sieve separation have achieved good results
.