Which type of Molecular sieve is for natural gas dehydration?

2017-05-06

Molecular sieve is a material with pores ( very small holes) of uniform size. These pore diameters are similar in size to the molecules, and thus large molecules cannot enter or be absorbed while the smaller molecules can go in. Due to the special performance of preferential adsorption, molecular sieve is widely used for gas dehydration, gas purification and gas production. In this article, we are going to mainly talk about the application of natural gas dehydration.
By the molecular sieve dehydration units, the water vapor in natural gas stream will be removed well. The inlet gas in the natural gas processing is required to be free of water under the cryogenic temperature. High water vapor can freeze at low temperature forming hydrates. These hydrates can be a problem in the cryogenic process. The use of the molecular sieve will help avoid such kind of problem.
For natural gas dehydration, our molecular sieve 4A is very workable. With an open crystal structure, the moisture will be removed well also along with the removal of some other molecules. The following is the technical specification of 4A.

Properties	Unit	Bead		Pellet
Diameter	mm	1.6-2.5	3-5	1/16”	1/8”
Static Water Adsorption	%wt	≥21.5	≥21.5	≥21.5	≥21.5
Bulk Density	g/ml	≥0.70	≥0.70	≥0.65	≥0.65
Loss on Ignition	%wt	≤1.50	≤1.50	≤1.50	≤1.50
Loss on Attrition	%wt	≤0.10	≤0.10	≤0.30	≤0.30
Crush Strength	N	≥30	≥80	≥30	≥70
Particle Ratio	%	≥ 97	≥99	~	~

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