SIMULATION EXPERIMENT WITH COALIFICATION OF LIGNITE

Abstract

Abstract: Simulation experiment with coalification of lignite in Shulan coal mine, Jilin province was made to examine the component characteristics of product at different temperature stage, carbon isotope characteristics of methane in gaseous products, and coal-formed oil and its expulsion during coalification.It is suggested the temperature is the key control on change in products.The following conclusions can be reached :① nonhydrocarbon, saturated hydrocarbon and olefinic hydrocarbon are main gaseous products from coalification.Nonhydrocarbon is dominant in low-temperature stage, the content of methane increase with temperature, and heavier hydrocarbon gas peaks at 400 ~ 450 ℃.② carbon isotope of methane in gaseous products from coalification becomes heavier with temperature.③coal can generate and expel oil.It has expelled oil before 350 ℃, and peaks at 375~ 425℃.

Key words: Lignite, Simulation test, Coal-formed oil, Compositional analysis, Evolution

Huo Qiuli, Du Hongwen, Zhou Ping. SIMULATION EXPERIMENT WITH COALIFICATION OF LIGNITE[J]. Xinjiang Petroleum Geology, 1998, 19(4): 275-277.

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SIMULATION EXPERIMENT WITH COALIFICATION OF LIGNITE

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