Potassium Type A (3A) molecular sieves

Performance

3A molecular sieve, the Shanghai Jiading molecular sieve production plants refers to the crystal structure of the A-type potassium type adsorption critical diameter not greater than 3A molecular,

Typical chemical composition: 2/3K2O·1/3Na2O·Al2O3·2SiO2·9/2H2O.

Use

For unsaturated hydrocarbon materials such as pyrolysis gas, propylene, butadiene, hexyne industrial dehydration can also be used for water, gas, polar liquid (such as ethanol) and gas drying. 3A-type smaller aperture, can be excluded in the process of water adsorption, all other molecules thereby preventing the hydrocarbons of adsorption.

Technical Specifications

Name of index		Strip		Spherical		Hollow glass
Name of index		Ø1.5-1.7mm	Ø3-3.3mm	Ø2.0-2.8mm	Ø2.8-4.75mm	Ø1.0-1.6mm	Ø1.6-2.0mm
Attrition rate %≤		0.3	0.35	0.15	0.15	0.15	0.15
Bulk density g/ml				0.70	0.70	0.75	0.75
Granularity %				98	98	98	98
Static water adsorption %		21.5	21.5	21.5	21.5	21.5	21.5
Ethylene adsorption %		3.0	3.0	3.0	3.0	2.5	2.5
Compressive strength	Unit area crush strength N/Granule　N/mm2	20	20	60	70	25	26
Compressive strength	The coefficient of variation	0.5	0.5	0.3	0.3	0.3	0.3
Package moisture content%		1.5	1.5	1.5	1.5	1.5	1.5

GB10504-89 National Institute of Standards

Name of index		Strip				Spherical
		Ø1.5-1.7mm		Ø3-3.3mm		Ø2.0-2.8mm		Ø2.8-4.75mm
		First grade	Qualified products	First grade	Qualified products	First grade	Qualified products	First grade	Qualified products
Attrition rate %≤						0.4	0.6	0.4	0.6
Bulk density g/ml						0.68	0.6	0.68	0.6
Granularity %						96	95	96	95
Static water adsorption %		20	19	20	19	20	19	20	19
Ethylene adsorption %		3.0	3.0	3.0	3.0	3.0	3.0	3.0	3.0
Compressive strength	Unit area crush strength N/Granule N/mm2	18.5	15	18.5	15	44	44	59	59
Compressive strength	The coefficient of variation	0.5	0.5	0.5	0.5	0.3	0.3	0.3	0.3
Package moisture content %		1.5	1.5	1.5	1.5	1.5	1.5	1.5	1.5

Package moisture content		Hollow glass
		Ø1.0-1.6mm		Ø1.6-2.0mm
		First grade	Qualified products	First grade	Qualified products
Attrition rate%≤		0.2	0.3	0.2	0.3
Bulk density g/ml		0.74	0.68	0.74	0.68
Granularity %		98	97	98	97
Static water adsorption%		20	19	20	19
Ethylene adsorption %		2.0	2.0	2.0	2.0
Compression Strength	Unit area crush strength N/Granule N/mm2	14	14	20	20
Compression Strength	The coefficient of variation	0.3	0.3	0.3	0.3
Package moisture content %		1.5	1.5	1.5	1.5

Regeneration conditions

I plant the production of 3A, 4A, 5A, 13X molecular sieve available heating and purge or evacuated, renewable reuse.

1. the removal of moisture: available drying gas, such as nitrogen, air, hydrogen, saturated carbonized hydrogen was heated to 150-320 ° C in 0.3-0.5kg/m2 under pressure introduced into the molecular sieve bed, continuing for 3-4 hours, and then tothe sorber pass into the dry cold gas for approximately 2-3 hours, isolated air-cooled to room temperature.

2. the removal of organic material: the available steam from the molecular sieve, the first adsorbate alternative out, then heated to 1, and the regeneration may also be in the 200-350 ℃ superheated vapor or inert gas through the regeneration, (can not be used with the adsorbate.contact produce an explosive mixture of gas).

3. the removal of gaseous material removal method available vacuum regeneration.