Patent ID: 8361201
Filing Date: 2013-01-29
Classification: B01D,C10L,E21B

Abstract:
1. A process for reducing the hydrogen sulphide content of natural gas obtained during the extraction of sour gas-containing crude oil/natural gas mixtures, by first reducing the high pressure the raw crude oil/natural gas mixture is under to between 70 and 130 bar separating an outgassing raw gas from the crude oil and cooling said raw gas at the same time drawing off the liquid medium as it condenses during said cooling following said cooling and without any further action to reduce the pressure, subjecting the outgassed raw gas to gas scrubbing, which absorbs a large part of the H directing the laden solvent to at least one pressure reduction step feeding the heat given off during the cooling of the raw gas to the laden solvent letting the dissolved H cooling the solvent thus regenerated and returning it to the gas scrubber further reducing the pressure of the crude oil from 70-130 bar to 20-40 bar in a subsequent step and separating an additional H again reducing the pressure of the crude oil from 20-40 bar to 2-15 bar and separating a further additional H bringing the H bringing this combined H