34.コークス炉生成タールの熱分解挙動の検討

抄録

A coal tar produced by a commercial coke oven was pyrolyzed in a quartz tube reactor at 800 to 1100℃ and the effects of the pyrolysis temperature and the residence time on the product distributions were examined. Hydrogen and methane were main gas products and a fairly large amount of coke was formed. The yields of hydrogen and coke monotonously increased with the increase of either pyrolysis temperature or residence time, and they reached 4.3wt% and 80wt%, respectively, at 1100℃ and at 6.7s of residence time. The presence of steam in the feed gas did not affect the pyrolysis of the coal tar but steam gasification of the coke formed during the pyrolysis occurred.