To compare the chemical composition of coal tars under different atmospheres, gc and gc/ms were used to analyze the volatile fractions of tar obtained by pyrolysis of shendong coal at 750 °c in crmp process and to be compared with those under nitrogen, hydrogen, methane, carbon dioxide atmospheres. Composition analysis of coal tar remains a challenging task because of its complex components In this paper, the compositions of low temperature coal tar (ltct) and the wash oil fraction of high temperature coal tar (htct) were studied. A product obtained by the destructive distillation of bituminous coal at a temperature of about 1000 degrees A nearly black, viscous liquid with a strong characteristic penetrating odour. The proximate analysis of coal is presented as a group of test methods that has been used widely as the basis for coal characterization in connection with coal utilization.
Calculate solution concentrations from solute and solvent amounts During the test, tar samples were taken every day from the liquid product separator and analysed by the methods used for testing properties of typical coke oven (coal) tar The obtained results were compared with each other and with the data for coal tar.
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