煤炭地下气化矿物碳酸化固定二氧化碳的研究  

STUDY ON THE FIXATION OF CARBON DIOXIDE MINERAL CARBONATION DURING UNDERGROUND COAL GASIFICATION

作　　者：张尚军[1] 张宇[2] 胡静娟[1] 潘佳[1] 张述雄中国矿业大学(北京)化学与环境工程学院 刘淑琴[1] 

机构地区：[1]中国矿业大学(北京)化学与环境工程学院,北京博士生100083 [2]国网电力科学研究院北京国电富通科技发展有限责任公司,北京助理工程师100070

出　　处：《煤炭转化》2013年第3期9-13,38,共6页Coal Conversion

基　　金：国家高技术研究发展计划(863)资助项目(2011AA050105);教育部新世纪人才支持计划(NCET-10-0773);教育部大学生创新性实验计划(110301g)

摘　　要：通过固-液-气三相模拟反应,研究了煤炭地下气化灰渣在模拟咸水中对二氧化碳的固化作用,考察了反应温度、反应压力、颗粒粒径及反应介质对二氧化碳矿物碳酸化固化率的影响.结果表明,反应温度从50℃升至200℃,固化率先增加后降低,150℃时最高;反应压力从1.0MPa升至2.5MPa,固化率从0.93%增至1.65%;颗粒粒径由75μm～150μm降至75μm以下,固化率从1.18%增至1.48%;反应介质由蒸馏水变为模拟咸水,固化率从0.38%增至1.65%.在150℃,2.5MPa,反应时间1h,颗粒粒径小于75μm的条件下,气化灰在模拟咸水中的固化率最高,可达1.65%.The action of curing between ash and carbon dioxide in the presence of simu- lated salt water was studied in the solid-liquid-gas three-phase simulated reaction. Abundant experimental studies were performed in the paper to investigate the factors that influenced the cu- ring rate of carbonation reaction, such as reaction temperature, reaction pressure, particle size and reaction medium. The results showed that the mineral carbonation curing rate increased and then decreased with the increment of reaction temperature from 50 ~C to 200 ~C . At 150 ~C, car- bonation curing rate reached the highest. When the reaction pressure was increased from 1. 0 MPa to 2.5 MPa, the mineral carbonation curing rate increased from 0.93% to 1.65%. With the decrease of particle size from 75 μm-150 μm down to 75 μm, the mineral carbonation curing rate increased from 1.18% to 1.48%. When the distilled water was replaced by simulated salt water as the reaction medium, carbonation curing rate increased from 0.38% to 1.65%. At 150 ℃, 2.5 MPa, reaction time 1 h, the particle size less than 75 μm, carbonation curing rate of gasifica- tion ash in simulated salt water medium was up to 1.65%.

关 键 词：煤炭地下气化 二氧化碳 气化灰 模拟咸水 矿物碳酸化 

分 类 号：TD841[矿业工程—煤矿开采] X784[矿业工程—矿山开采]