Krupp Koppers Gmbh

Hermann Staege

Eberhard Goeke

The invention relates to a process for recovering the sulfur components of acidic gases collected by gas desulfurization. The inventive concept is to first compress a stream of the acidic gas (known as 'acid gas') up to a pressure of 8.00 to 12.00 atmospheres absolute. Then this compressed stream of gas is cooled to -35.degree. to -45.degree. C. The pressure on this cooled gas is reduced to a pressure of 1.05 to 2.00 atmospheres absolute. Subsequently, the gas is further cooled to a temperature of -55.degree. to -65.degree. C. Finally, the resulting mixture is conducted to a separator where frozen solid constituents are separated from the gaseous constituents. The gaseous constituents include substantially all of the sulfides produced during the gas desulfurization and the frozen solid particles consist essentially of carbon dioxide.

Process for recovering acidic gases collected during gas desulfurization

Fine-grained solids including dust-like solids are introduced into a reaction space which is under pressure such as used in the gasifying of coal is effected by mixing carbon dioxide in the form of dry ice with the solids after the solids have been precooled to a temperature of -80.degree. C., then bringing the formed mixture of solids and dry ice up to the pressure required for introduction into the reaction space, thereafter subjecting the dry ice to sublimation to separate it from the solids and subsequently, after pressure release and cooling to the desublimation comparative, reconverting the gaseous carbon dioxide into dry ice which then is circulated into the next run while the solids are passed into the reaction space.

Process for the continuous introduction of fine-grained and dust-like

A carbon monoxide-rich gas of a carbon monoxide concentration of at least 98% by volume is produced by

Process for producing a carbon monoxide-rich gas

Dried, finely divided coal is admitted into a gasifying chamber wherein it undergoes partial oxidation in the presence of air and water vapor so as to form a combustible gas. The combustible gas is cooled by heat-exchange with water thereby causing low-pressure and high-pressure steam to be generated. After being washed, compressed and desulfurized, the cooled combustible gas is admitted into a combustion chamber. Here, it is combusted in the presence of preheated air so as to form a combustion gas. The hot combustion gas preheats the air and water vapor used for the partial oxidation, superheats the high-pressure steam previously produced and generates additional high-pressure steam. As a result, the combustion gas is cooled. The cooled combustion gas is expanded in a gas turbine which drives an electrical generator. The expanded combustion gas then preheats the air which is used for the combustion, preheats the water which is to be converted to steam and also dries the coal which is to undergo partial oxidation. The high-pressure steam which has been generated is expanded in a steam turbine which drives an electrical generator. The steam recovered from the steam turbine may be condensed and recycled so as to again serve as a source of steam. The low-pressure steam generated by the combustible partial oxidation gas may serve as a source of water vapor for the partial oxidation. In the above manner, electrical energy may be generated in an economical manner.

Method and arrangement for the generation of energy, particularly

A process for the production of a gas having a methane content between 40 and 99% by volume from a gas mixture which contains hydrogen, carbon dioxide, and at least 20% by weight of carbon monoxide which comprises the following steps:

Processes for the production of methane-containing gases

The gaseous mixture obtained from the partial oxidation of coal and/or heavy oil is desulfurized. Thereafter, the gaseous mixture is admitted into a reactor wherein it simultaneously undergoes a conversion reaction and a methanization reaction. The reactions take place at a temperature between 280.degree. and 500.degree.C and at a pressure between 3 and 60 atmospheres in excess of atmospheric pressure. The reactions proceed catalytically in the presence of conventional catalysts. After having been subjected to the reactions, the gaseous mixture is conveyed to a scrubber for the removal of carbon dioxide. A gas containing at least 80 percent by volume of methane is obtained.

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Essen, Germany

Hermann Staege