Molecular sieves 5A

PXZT Molecular sieves-model 5A have strong ability of selective absorption, high strength, and thermal stability.

Various series of specific molecular sieves have strong ability of selective absorption, high strength, and thermal stability which have been proved successful when used in chemical, oil, air separation and natural gas processes.

 

Features & Application

Molecular Sieve 5A is an alkali alumino silicate; it is the calcium form of the Type A crystal structure. Type 5A has an effective pore opening of  5 angstroms (0.5 nm). It will adsorb molecules with a kinetic diameter of less than 5 Angstrom and exclude those larger. It is especially suitable for PSA adsorber applications where it may be used for the separation of normal- and iso- paraffins (C4 to C6 species), in PSA hydrogen purification and in oxygen concentrators...

Typical Chemical Formula0.7 CaO . 0.3 Na2O . Al2O3 . 2 SiO2 . 4.5H2OSiO2 : Al2O3 ≈2

Application

(1) The strong ionic forces of the divalent calcium ion makes it an excellent adsorbent to remove water, CO2, H2S from sour natural gas streams, while minimising COS formation.

(2) Light mercaptans are also adsorbed.(3) It is also used for the separation of normal- and iso paraffins. (4) Production of high purity N2, O2, H2 and inert gases from mixed gas streams.

 Technical Parameter

Item	Unit	Technical data
Shape		Pellet		Sphere
Diameter	mm	1.5-1.7	3.0-3.3	1.7-2.5	3.0-5.0
Size ratio up to grade	%	≥98	≥98	≥96	≥96
Bulk density	g/ml	≥0.68	≥0.68	≥0.68	≥0.68
Wear ratio	%	≤0.20	≤0.40	≤0.20	≤0.20
Crushing strength	N	≥30/cm	≥45/cm	≥30/piece	≥60/piece
Static water adsorption	%	≥21.5	≥21.5	≥21.5	≥21.5
Water content, as shipped	%	≤1.5	≤1.5	≤1.5	≤1.5

Regeneration PXZT molecular sieve Type 5A 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 5A molecular sieve, a temperature of 250-300°C is required. A properly regenerated molecular sieve can give moisture dew points below -100°C, or mercaptan or CO2 levels below 2 ppmv.The outlet concentrations on a pressure swing process will depend on the gas present, and on the conditions of the process.

Size 5A - 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 1.6, 3.2.

AttentionTo avoid damp and pre-adsorption of organic before running, or must to be reactivated.

Packaging Details: 

Airtight Vacuum packing inside

a. 25kg/carton 13.5ton/20FCL

b. 30kg/carton 14.4ton/20FCL

c. 30kg/paper drum 10.8ton/20FCL

d.150kg/iron drum 12ton/20FCL

Molecular sieves 5A