Gas separation: processes – Liquid contacting – And degasification of a liquid
Reexamination Certificate
2004-03-24
2009-10-20
Smith, Duane (Department: 1797)
Gas separation: processes
Liquid contacting
And degasification of a liquid
C095S174000, C095S181000, C095S183000, C095S199000, C095S235000, C095S236000
Reexamination Certificate
active
07604684
ABSTRACT:
With the help of a method of selective removal of hydrogen sulphides, organic sulphur components and CO2from crude gases, by using a first and second absorption stage (41or49) for separating almost pure CO2, a solution has to be found, with which, among other things, hydrogen sulphides and organic sulphur compounds can be removed in as selective a manner as possible.This is achieved as follows: the absorption agent coming out of the first absorption stage (41) and enriched with hydrogen sulphide and CO2a.o., is pre-heated to an increased pressure with the hot-regenerated solution (12) coming from the desorption stage (50) in a heat exchanger (44), and then at the selected higher pressure de-stressed in a high pressure flash container (47), whereby the gas flow released at the increased pressure is cooled in a condenser (48) and then guided to the second absorption stage (49), in which the sulphur components are completely removed with the help of a part-flow of the regenerated absorption agent (15, 16, 17) coming from the desorption stage (50), whereby the absorption agent is guided back (26/27) from the second absorption stage (49) into the desorption stage (50).
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“Acid and Sour Gas Treating Processes”, Gulf Publishing Company, ISBN 0-87201-839-3, p. 21, fig. 6.
“Acid and Sour Gas Treating Processes”, Gulf Publishing Company, ISBN 0-87201-839-3, p. 21, fig. 6. to follow (spec).
Collard & Roe P.C.
Smith Duane
Uhde GmbH
Wu Ives
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