Abstract
This paper made a preliminary investigation of CO effects on lignite liquefaction process. The Schütze method coupled with an elemental analyzer was adopted for directly determining the O contents of liquid and solid materials, and the O balance, variation amounts of water, and CO consumptions were calculated quantitatively for liquefaction processes. It was found that the two reactions which were the water-gas shift reaction and the reaction between CO and organic structures of coals, occurred distinctly in the liquefaction process with CO atmospheres, and were simultaneously strengthened by the catalysts. The simultaneous occurrence of the two reactions played the roles of reducing the water production, elevating the coal conversion, and promoting the asphaltene (AS) and preasphaltene (PA) production.
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