CAJ | 학술논문

利用固定床反应装置，研究了内蒙古胜利褐煤(SL-raw)及其脱除矿物质煤(SL-HF)热解过程中 CO2、CO、CH4和H2生成规律，同时通过动力学回归拟合，得到CO2、CO、CH4和H2生成活化能。矿物质的脱除并不影响热解气CO2、CO、CH4和H2依次生成顺序，对CH4热解生成特性几乎没有影响。SL-HF热解过程中CO2和CO生成温度与SL-raw相比分别降低了107 K和168 K，其最大生成速率分别提高和降低了17.1%和18.9%，而H2也降低了30.4%。矿物质的存在，有利于胜利褐煤在热解过程中生成 CO+H2含量更高的合成气，同时H2/CO提高37%以上。动力学拟合结果表明，SL-raw和SL-HF热解过程中CO2、CO、CH4和H2生成活化能顺序均为：EH2>ECH4>ECO>ECO2，脱除矿物质的SL-HF热解生成CO2、CO和CH4活化能分别降低33.7%、13.1%和16.9%，H2生成活化能增加32.8%，表明胜利褐煤中矿物质在热解过程中抑制了CO2、CO和CH4的生成，却有利于H2的生成。
이용고정상반응장치，연구료내몽고성리갈매(SL-raw)급기탈제광물질매(SL-HF)열해과정중 CO2、CO、CH4화H2생성규률，동시통과동역학회귀의합，득도CO2、CO、CH4화H2생성활화능。광물질적탈제병불영향열해기CO2、CO、CH4화H2의차생성순서，대CH4열해생성특성궤호몰유영향。SL-HF열해과정중CO2화CO생성온도여SL-raw상비분별강저료107 K화168 K，기최대생성속솔분별제고화강저료17.1%화18.9%，이H2야강저료30.4%。광물질적존재，유리우성리갈매재열해과정중생성 CO+H2함량경고적합성기，동시H2/CO제고37%이상。동역학의합결과표명，SL-raw화SL-HF열해과정중CO2、CO、CH4화H2생성활화능순서균위：EH2>ECH4>ECO>ECO2，탈제광물질적SL-HF열해생성CO2、CO화CH4활화능분별강저33.7%、13.1%화16.9%，H2생성활화능증가32.8%，표명성리갈매중광물질재열해과정중억제료CO2、CO화CH4적생성，각유리우H2적생성。
The pyrolysis was conducted in a micro fixed-bed reactor for the Shengli lignite (SL-raw) and the corresponding demineralized sample (SL-HF). The generation regularities of CO2, CO, CH4 and H2 during pyrolysis were investigated and corresponding formation reaction activation energy were studied from the reaction kinetics. The inherent mineral had no effect on the generating orders of CO2, CO, CH4 and H2 during pyrolysis. Compared with SL-raw, the corresponding temperatures of CO2 and CO of SL-HF to reach the maximum rates of formation were reduced about 107 K and 168 K, respectively. The maximum generation rate of CO2 of SL-HF and CO increased and decreased by 17.1%and 18.9%, respectively. Meanwhile, the maximum formation rate of H2 was reduced by 30.4 %. The minerals in Shengli lignite was conducive to generate higher H2+CO content syngas through pyrolysis, and attribute to increase H2/CO molar ratio by more than 37 %. Dynamics results show that the generation activation energy of CO2, CO, CH4 and H2 during pyrolysis of SL-raw and SL-HF process is in similar sequence:EH2>ECH4>ECO>ECO2. The reaction activation energy of generation of CO2, CO, CH4 for SL-HF are reduced by 33.7%, 13.1%and 16.9%, respectively, and H2 generation activation energy increased by 32.8%, showing that some inherent minerals in Shengli lignite suppress the formation of CO2, CO, CH4, but facilitate the generation of H2.