Title: Experimental Study of the Distribution of Products Quickly Pyrolyzed in the "Coal-topping" Process
Abstract: On a small coal topping test stand,simulated was the coal topping process and experimentally studied was the distribution of products quickly pyrolyzed from the following three types of typical coal,namely,Grade No.6 coal,coal fed into a furnace for coal gas production and oil shale rock originated from Yilan County of Heilongjiang Province.The law governing the influence of the pyrolytic temperature on the coal tar productivity,coal gas constituents,coal tar constituents was obtained respectively: the temperatures corresponding to the highest yields of coal tar from the above-mentioned three types of coal were 481 ℃,519 ℃ and 514 ℃ respectively and the coal tar yields were 13.58%,12.54% and 4.23% respectively.The H2 and CH4 productivities of the three types of coal increased with an increase of the temperature while the CO productivity of the oil shale rock attained its maximum at 490 ℃ and then decreased with an increase of the temperature.The carbon dioxide productivities of the three types of coal were all influenced little by the temperature.At various pyrolytic temperatures,Grade No.6 coal had relatively high productivities of hydroxybenzene and benzene derivatives.When the temperature was 440 ℃,the long chain hydrocarbons of the coal fed into the furnace for coal gas production approximately took up 50% of the coal tar in weight.
Publication Year: 2013
Publication Date: 2013-01-01
Language: en
Type: article
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