Lurgi Gmbh

Alexander Schriefl

Manfred Meyer

Ulrich Koss

Eckhard Jüngst

Wolfgang Nehb

From the CO-containing stream of process gas obtained in a process for the treatment of a CO-containing stream of process gas, which is obtained in the production of pure synthesis gas from raw gas in the partial oxidation of heavy oils, petroleum coke or wastes, or in the gasification of coal, or when processing natural gas or accompanying natural gas, COis removed physisorptively or chemisorptively, and the solvent loaded with COis expanded to a lower pressure for the desorption of CO. In order to generate COas pure as possible, the contaminated COis condensed to at least 60 bar[a] or below its critical temperature to at least 70 bar[a], and the impurities contained in the liquid COare removed by stripping with gaseous COguided in counterflow.

[object Object]

With a method configured to generate process gas that contains hydrogen sulfide and sulfur dioxide for the Claus process, hydrogen-sulfide containing feed gas is burned with pure oxygen by means of several burners opening out into a combustion chamber wherein the pure oxygen is fed into the combustion chamber through a central tube each, the feed gas through a tube arranged coaxially around the central tube and inert gas as purge gas via an annular duct coaxially surrounding the feed gas tube. A favorable option of the method consists in the use of COreclaimed by desorption of laden methanol as purge gas.

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Frankfurt am Main, Germany

Alexander Schriefl