Method of purifying large quantity of exhaust gas containing...

Details Method of purifying large quantity of exhaust gas containing... Method of purifying large quantity of exhaust gas containing...

2006-06-26

2010-02-23

Lawrence, Frank M (Department: 1797)

Gas separation: processes

Solid sorption

Including reduction of pressure

C095S143000, C095S901000

Reexamination Certificate

active

07666252

ABSTRACT:
A method of purifying an exhaust gas by way of an adsorption unit (adsorption columns7a,7b) including an adsorbent layer paced with precoated mesoporous active carbon capable of alternately switched operations of adsorption and desorption, wherein prior to the treatment by way of the adsorption unit, a concentration increase is effected by way of a pre-treatment unit (honeycomb rotor (11) or stationary honeycomb) including an adsorbent layer packed with precoated mesoporous active carbon for concentrating of any dilute volatile hydrocarbon contained in the exhaust gas. Consequently, there can be provided a method of purifying large amounts of exhaust gas with dilute volatile hydrocarbon concentration, in which without emission of carbon dioxide, any volatile hydrocarbon contained can be recovered with extreme easiness as a liquid. Further, there can be provided a purification method in which zero emission is attained with respect to volatile hydrocarbons.

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International Search Report of PCT/JP2006/312696, date of mailing Aug. 15, 2006.
“Separation Technology,” vol. 33, No. 4, pp. 16-20 and 80, 2003.

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