PLANT FOR CLEANING OF NATURAL OR ASSOCIATED GAS FROM CARBON SULPHIDE AND MERCAPTANS Russian patent published in 2010 - IPC B01D53/00 

FIELD: process engineering.

SUBSTANCE: invention relates to oil-and-gas industry and can be used for removing carbon sulphide and mercaptans from natural and associated gases. Proposed plant comprises heat exchanger, separator communicated with pipeline, unit to produce gas hydrates of carbon sulphide and mercaptans representing two parallel mixers, i.e. operating and standby, of natural or associated gas and water. One of inlets of said mixers communicates via heat exchanger and gas flowmeter with gas source, second inlet of mixers communicates via proportioner with water source, while outlets of mixers are communicated with separator inlet. Note here that aforesaid separator incorporates screen filter arranged inclined to flow of the mix of gas and gas hydrates of carbon sulphide and mercaptans and to vertical axis of separator. Separator bottom branch pipe communicates with gas hydrate and mercaptans accumulating tank, while top branch pipe communicates with gas pipeline via control valve. Operating mixer temperature is maintained in the range of 1-25°C, while its pressure varied from 0.03 to 0.2 MPa.

EFFECT: higher quality of purification, reduced capital and operating costs.

4 cl, 1 dwg