| 摘要 |
Carbon dioxide is selectively removed from an acid gas stream containing carbon dioxide and sulfur-containing components including hydrogen sulfide by counter-currently contacting the acid gas stream with an aqueous solution of a treating agent in order to selectively absorb carbon dioxide from the gas stream, the treating agent being an aqueous solution of a polyoxypropylene triamine having the formula: <IMAGE> wherein R' represents a methylene group and R'' represents hydrogen or methyl or ethyl and wherein the sum of x+y+z is a positive integer having a value of from about 4 to about 6.
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