Introduction
Chemxin molecular sieve type 4a is an alkali alumino silicate; it is the sodium form of the type a crystal structure. 4a molecular sieve has an effective pore opening of about 4 angstroms (0.4nm). Chemxin type 4a molecular sieve will adsorb most molecules with a kinetic diameter of less than 4 angstroms and exclude those larger. Such adsorbable molecules include simple gas molecules such as oxygen, nitrogen, carbon dioxyde and straight chain hydrocarbons. Branched chain hydrocarbons and aromatics are excluded.
Regeneration
Chemxin molecular sieve type 4a 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 4a molecular sieve, a temperature of 250-280°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
Size
4a - zeolites are available in beads of 1-2 mm(10x18 mesh), 2-3 mm(8x12 mesh), 2.5-5 mm(4x8 mesh) and as powder, and in pellet 1.6mm, 3.2mm.
Attention
To avoid damp and pre-adsorption of organic before running, or must to be reactivated.
Supplier: Molecular sieve 3A 4A 5A 13X, activated alumina, ceramic ball
Supplier: Molecular Sieves, Zeolites, 3a Molecular Sieves, 4a Molecular Sieves, 5a Molecular Sieves, 13x Molecular Sieves, 13x Hp Molecular Sieve, Lithium Molecular Sieve,5a Psa Molecular Sieve, Calcium Molecular Sieve, Carbon Molecular Sieve, Tower Packing, Structured Tower Packing, Random Tower Packing ,ceramic Tower Packing, Metal Tower Packing, Plastic Tower Packing, Column Internals, ,mist Eliminator, Pad Demister, Liquid Distributor, Support Grid, Bed Limiter, Vane Type Demister, Packing Support, Activated Alumina, Mbbr, Water Treatment Ceramic Balls, Etc.
Supplier: Molecular sieve, activated alumina, ceramic ball, column tower packing
Supplier: Activated alumina, ceramic ball, molecular sieve, chemical packing
Supplier: Ceramic balls, catalyst, molecular sieves, ceramic and plastic random packings
Supplier: Activated carbon, anthracite coal, manganese dioxide, molecular sieves, ceramic balls, activated alumina balls
Services: Import and export
