| abstract |
The invention relates to a method for operating a gas scrubber, in which a feed gas ( 1 ) containing hydrogen, carbon monoxide, carbon dioxide and carbonyl sulfide and/or hydrogen sulfide is scrubbed in a scrubbing apparatus (A 1 ) using a scrubbing agent ( 3, 4 ) preladen with carbon dioxide in order largely selectively to separate the sulfur components from the feed gas and to produce a desulfurized gas stream ( 5, 9 ). The invention is distinguished in that a sulfur-free scrubbing agent ( 3, 4 ) is used which, on introduction thereof into the scrubbing apparatus (A 1 ), has a carbon dioxide partial pressure which is greater than or equal to the carbon dioxide partial pressure in the feed gas ( 1 ) to be desulfurized. |