Natural gas deacidizing method

Details Natural gas deacidizing method Natural gas deacidizing method

2006-03-28

2006-03-28

Lawrence, Frank M. (Department: 1724)

Gas separation: processes

Liquid contacting

And recycle or reuse of contact liquid for further contact

C095S199000, C095S209000, C095S235000, C423S228000, C062S625000, C062S635000

Reexamination Certificate

active

07018450

ABSTRACT:
The natural gas is successively contacted in column CA with a relatively methanol-rich solvent flowing in through line4,then with a relatively poor solvent flowing in through line9.The acid gas-containing solvent recovered through line3at the bottom of column CA is expanded through valves V1and V2to release acid gases through line6.A fraction of the expanded solvent is distilled in column CR. The regenerated solvent obtained at the bottom of column CR is sent to the top of column CA through line9.A second fraction of the expanded solvent is mixed with a solvent drawn off from column CR at an intermediate point between the bottom and the top of this column. This mixture of solvents is sent through line4into column CA.

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Preliminary Search Report.

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