文献类型：专利

英文题名：Powder coal pyrolysis and gasification method, involves entering activation gas into semi-coke lock hopper, entering semi-coke powder into feeding tank, and performing dense-phase gas force conveying process

作者：LI C;ZHAO H;XU J;CHEN X;DAI Z;LIU H;LI W;LIANG Q;LU H;YU G;ZHOU Z;GONG X;GONG Y;GUO Q;GUO X;WANG F;WANG X;WANG Y

机构：[1]UNIV EAST CHINA SCI & TECHNOLOGY

申请号：CN103980948-A

申请日：2014-06-11

公开日：2014-08-13

语种：英文

收录：DERWENT

摘要：NOVELTY - The method involves determining temperature of boiler feed water in a waste heat boiler (2) (S5). Synthetic gas is passed into a semi-coke filter (3) from the waste heat boiler (S6). Synthetic gas downstream treatment is performed (S7). Recovered semi-coke is entered into a semi-coke storage tank (4) (S8). The semi-coke is again entered into a semi-coke lock hopper (5) (S9). Activation gas is entered into the semi-coke lock hopper (S10). Semi-coke powder is entered into a semi-coke powder feeding tank (6) (S11). Dense-phase gas force conveying process is performed (S12). USE - Powder coal pyrolysis and gasification method. ADVANTAGE - The method enables improving methane content up to 2-15 wt % and reducing tar content with in 10 ppm. The method enables improving pyrolysis and gasification efficiency greater than 80% and raw material adaptability. The method enables utilizing natural gas and coal gas so as to perform coal pyrolysis and gasification process in a better manner. DESCRIPTION OF DRAWING(S) - The drawing shows a process flow diagram illustrating a powder coal pyrolysis and gasification method. Step for determining temperature of boiler feed water in waste heat boiler (S5) Step for passing synthetic gas into semi-coke filter from waste heat boiler (S6) Step for performing synthetic gas downstream treatment (S7) Step for entering semi-coke into semi-coke storage tank (S8) Step for entering semi-coke into semi-coke lock hopper (S9) Step for entering activation gas into semi-coke lock hopper (S10) Step for entering semi-coke powder into feeding tank (S11) Step for performing dense-phase gas force conveying process (S12) Waste heat boiler (2) Semi-coke filter (3) Semi-coke storage tank (4) Semi-coke lock hopper (5) Semi-coke powder feeding tank (6)