1
Rolf Wetzel, Bernhard Firnhaber: Method of producing methanol synthesis gas. Krupp Koppers, Michael J Striker, February 19, 1991: US04994093 (228 worldwide citation)

In accordance with a method of producing of methanol synthesis gas from a partial oxidation crude gas, the gas is cooled after a waste heat boiler of a gasifier by adding a converted circulating gas in a quenching zone. The resulting gas mixture is dedusted and then separated into a product gas part ...


2
Rolf Wetzel, Dietrich Radke: Method for producing steel. Fried Krupp Gesellschaft mit beschrankter Haftung, Spencer & Kaye, August 30, 1977: US04045214 (28 worldwide citation)

A method for producing steel from fine-grained iron ores includes the step of preheating and partially reducing the fine-grained iron ores in a countercurrent heat exchanger. The preheated and partially reduced fine-grained iron ores are then reduced in a fluidized bed reactor to form sponge iron. T ...


3
Adolf Linke, Werner Pohl, Karl Schmid, Rolf Wetzel: Process for working up municipal plastic waste materials by gasification. Krupp Koppers, Michael J Striker, November 28, 1995: US05470361 (27 worldwide citation)

In the process for gasification of municipal waste plastic waste material pieces of about a 20 mm piece size are compressed and heated at a pressure of from 40 to 80 bar until at a temperature of from 230.degree. to 300.degree. C. to produce an HCl-containing gas and a plastic waste material contain ...


4
Gerhard Wilmer, Rolf Wetzel: Method of cooling partial oxidation gas. Krupp Koppers, Michael J Striker, June 26, 1990: US04936871 (14 worldwide citation)

Decribed is a method of cooling partial oxidation gas exiting at a temperature between 1,000.degree. and 1,700.degree. C. from a conically converging outlet portion of a reactor vessel into a subsequent tubular cooling zone. To prevent deposition of sticky molten impurities entrained in the gas stre ...


5
Rolf Wetzel, Hubert Coenen, Winfried Kreuch: Process for the working up of salvage oil. Krupp Koppers, Michael J Striker, January 10, 1989: US04797198 (11 worldwide citation)

A process is disclosed for the working up of salvage oil, in which the salvage oil is subjected to an extraction under supercritical conditions. The halogen compounds contained in the produced extract are removed by catalytic hydrogenation. The extraction residue is eliminated by deposition or therm ...


6
Bernhard Firnhaber, Adolf Linke, Rolf Wetzel: Method of treatment of waste water obtained in a gasification plant during washing of raw gas. Krupp Koppers, Michael J Striker, December 30, 1986: US04632766 (10 worldwide citation)

In a method of treating waste water obtained in a direct washing with water of raw gas in a plant for a gasification of gas, the waste water is first settled in a settling tank and a resultant concentrated slime-containing water is subjected to a multi-stage oxidation with air or oxygen only at the ...


7
Bernhard Firnhaber, Karl Schmid, Cort Starck, Hans Werner Gosch, Richard Wenderoth, Rolf Wetzel, Wolfgang Schulte: Process for the removal of acid components and nitrogen oxides from the waste gases of industrial furnaces. Krupp Koppers, Michael J Striker, November 20, 1990: US04971777 (9 worldwide citation)

The process removes acid components including sulfur oxides and nitrogen oxides from the exhaust gases of industrial furnaces and includes oxidizing the nitrogen oxide contained in the exhaust gases with the oxygen contained in the exhaust gases at a exhaust gases temperature between 300.degree. and ...


8
Rolf Wetzel, Bernhard Firnhaber: Method of producing hydrogen-rich gas. Krupp Koppers, Michael J Striker, November 19, 1991: US05066476 (5 worldwide citation)

A gas with a hydrogen content of at least 85 volume percent of partial oxidation crude gas is produced in a method including cooling of the gas after waste heat boiler of a gasifier by adding converted circulating gas in a quenching zone. The resulting gas mixture after corresponding gas treatment i ...


9
Rolf Wetzel: Blast furnace process employing exchange fuel gas. Krupp Koppers, Michael J Striker, February 23, 1982: US04316741 (3 worldwide citation)

A blast furnace process and plant are provided employing a gas mixture comprising coke oven gas and gasified fine grained to dusty fuels. The mixture is produced in a mixing chamber wherein the raw gas from the gasifier is chilled with purified cool coke oven gas. The gas mixture is separated from d ...


10
Bernhard Firnhaber, Rolf Wetzel: Method for producting methane synthesis gas. Krupp Koppers, ZOU GUANGXIN, January 23, 1991: CN90103349

In accordance with a method of producing of methanol synthesis gas from a partial oxidation crude gas, the gas is cooled after a waste heat boiler of a gasifier by adding a converted circulating gas in a quenching zone. The resulting gas mixture is dedusted and then separated into a product gas part ...



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