Aqueous amine acid gas absorption
阅读：336发布：2023-04-07
专利汇可以提供Aqueous amine acid gas absorption专利检索，专利查询，专利分析的服务。并且Acid gases are removed from a gaseous stream containing the acid gases and also dienes by contact with a mixture of a lean aqueous amine acid gas absorption solution and a hydrocarbon solvent free of olefinic unsaturation. The use of such a mixture prevents the problems encountered in the amine regeneration system as a result of dienes being carried into the system.，下面是Aqueous amine acid gas absorption专利的具体信息内容。
2. The process as defined in claim 1 wherein the hydrocarbon solvent introduced with the lean aqueous acid gas absorption solution is present in an amount from about 2 percent to about 10 percent, by weight.
3. The process as defined in claim 2 wherein the hydrocarbon solvent has an initial boiling point of at least 80* C.
4. The process as defined in claim 1 wherein the hydrocarbon solvent is an aromatic hydrocarbon solvent.
5. A process for removing acid gases from a gaseous stream containing acid gases and dienes, comprising: contacting the gaseous stream in an acid gas absorption tower with a mixture of a lean aqueous amine acid gas absorption solution and a hydrocarbon solvent essentially free of olefinically unsaturated components, to effect removal of acid gases and dienes therefrom; recovering rich acid gas absorption solution and hydrocarbon solvent from said acid gas absorption zone; introducing the rich aqueous amine absorption solution and the hydrocarbon solvent into an amine regeneration tower to separate the acid gases from the aqueous amine acid gas absorption solution and recover a lean aqueous amine acid gas absorption solution; recovering leAn aqueous amine acid gas absorption solution and hydrocarbon solvent from the amine regeneration tower; passing the lean aqueous amine absorption gas solution and hydrocarbon solvent to the acid gas absorption tower; and purging a portion of the hydrocarbon solvent.
6. The process as defined in claim 5 wherein the hydrocarbon solvent introduced with the lean aqueous amine acid gas absorption solution is present in an amount from about 2 percent to about 10 percent, by weight.
7. The process as defined in claim 6 wherein a quiescent zone of liquid is maintained in the bottom of the acid gas absorption tower, said aqueous amine acid gas absorption solution and said hydrocarbon solvent being separately withdrawn from the bottom of the acid gas absorption tower, said purged portion of the hydrocarbon solvent being obtained from the hydrocarbon solvent withdrawn from the acid gas absorption tower, said aqueous amine acid gas absorption solution and hydrocarbon solvent being combined prior to introduction into the amine regeneration tower.
8. The process as defined in claim 7 wherein the portion of hydrocarbon solvent purged comprises from about 1 percent to about 5 percent, by weight, of the hydrocarbon solvent employed.
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