Gas separation: processes – Liquid contacting – Inorganic gas – liquid particle – or solid particle sorbed
Reexamination Certificate
2005-09-06
2005-09-06
Lawrence, Frank M. (Department: 1724)
Gas separation: processes
Liquid contacting
Inorganic gas, liquid particle, or solid particle sorbed
C423S228000, C423S229000, C252S189000
Reexamination Certificate
active
06939393
ABSTRACT:
A description is given of the use of an alkylenediamine of the type R1HN—X—NHR2, where X is an alkylene radical having from 2 to 9 carbons, R1is a hydrocarbon radical having from 1 to 6 carbons and R2is a hydrocarbon radical having from 1 to 6 carbons or is hydrogen (H) for removing sour gases from a sour-gas-containing fluid stream, and of a process for deacidifying a fluid stream of this type and a wash liquid or absorption liquid for use in such a process. According to the invention, in at least one absorption step, the fluid stream is brought into intimate contact with a wash liquid, the wash liquid comprising an aqueous amine solution which comprises at least one tertiary aliphatic alkanolamine having from 2 to 12 carbons and an activator of the above type R1HN—X—NHR2. The fluid stream which is substantially freed from sour gases and the sour-gas-loaded wash liquid are then separated from one another.
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Asprion Norbert
Grossmann Christoph
BASF - Aktiengesellschaft
Lawrence Frank M.
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