COAL LIQUEFACTION PROCESS INTEGRATED WITH A COKE PRODUCTION STEP

摘要

PURPOSE:To obtain a liquefied oil under mild reaction conditions simply, by using a saccharide tar as a solvent for coal liquefaction, and coal obtained from solvent purification as an addition agent for preparation of coke for metallurgy. CONSTITUTION:A coke oven gas evolved from the coke oven 1' is partially used as a fuel for the coke oven 1' and the rest is sent to the hydrogen purifying device 2'. The coke oven gas is blended with hydrogen from the coal liquefying process 3' and a hydrocarbon gas by the device 2', purified and as a hydrogen gas rich is hydrogen for coal liquefaction is sent to a coal liquefaction process. A high-calorie gas rich in hydrocarbon gas prepared as a by-product by the device 2' as a fuel is sent to the coke oven 1' or the coal liquefaction process 3'. Crude tar prepared by the oven 1' is directly fed to the process 3'. In the process 3', coal is liquefied in the presence of a solvent for liquefaction and hydrogen, separated into an exhaust gas, a liquefied oil, coal obtained from solvent purification, and an insoluble substance, and the exhaust gas is returned to the device 2'. The coal obtained from solvent purification is sent to the coke oven 1'.