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The Karrick process is a low-temperature carbonization (LTC) and pyrolysis process of carbonaceous materials. Although primarily meant for coal carbonization, it also could be used for processing of oil shale, lignite or any carbonaceous materials. These are heated at to in the absence of air to distill out synthetic fuels–unconventional oil and syngas. It could be used for a coal liquefaction as also for a semi-coke production. The process was the work of oil shale technologist Lewis Cass Karrick at the United States Bureau of Mines in the 1920s. ==History== The Karrick process was invented by Lewis Cass Karrick in the 1920s. Although Karrick did not invent coal LTC as such, he perfected the existing technologies resulting the Karrick process.〔 〕 The retort used for the Karrick process based on the Nevada–Texas–Utah Retort, used for the shale oil extraction.〔 In 1935, a Karrick LTC pilot plant was constructed in the coal research laboratory at the University of Utah.〔 Commercial-size processing plants were operated during the 1930s in Colorado, Utah and Ohio. During World War II, similar processing plant was operated by the United States Navy.〔 〕 In Australia, during World War II the Karrick process plants were used for shale oil extraction in New South Wales. In 1950s–1970s, the technology was used by the Rexco Company in its Snibston plant at Coalville in Leicestershire, England.〔 〕 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Karrick process」の詳細全文を読む スポンサード リンク
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