Process for the removal of water, CO.sub.2, ethane and C.sub.3 +

Details Process for the removal of water, CO.sub.2, ethane and C.sub.3 + Process for the removal of water, CO.sub.2, ethane and C.sub.3 +

1997-09-16

1998-11-24

Spitzer, Robert

Gas separation: processes

Solid sorption

Including reduction of pressure

95103, 95105, 95122, 95139, 95143, B01D 53047

Patent

active

058400990

ABSTRACT:
A process is set forth for the selective removal of water, CO.sub.2, ethane and C.sub.3 + hydrocarbons from gas streams, particularly a natural gas stream comprising primarily methane. The process comprises contacting the gas stream with an adsorbent material consisting exclusively of one or more compounds which are basic (i.e. compounds which, when contacted with a pH neutral aqueous solution, cause such solution to have a pH greater than 7.0) and which are mesoporous (i.e. compounds which have moderately small pores providing a surface area less than 500 m.sup.2 /g). The key to the present invention is the use of a single homogenous adsorbent without sacrificing performance. Typical mesoporous adsorbents which are useful in the present invention include zinc oxide, magnesium oxide and, in particular, activated alumina.

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