文献类型：期刊文献

中文题名：负载碳酸钠煤焦催化气化反应特性研究

英文题名：Investigation on catalytic gasification reaction characteristics of coal char with Na_2CO_3

作者：李献宇[1,2];郭庆华[1,2];丁路[1,2];于广锁[1,2]

机构：[1]华东理工大学煤气化及能源化工教育部重点实验室,上海200237;[2]上海市煤气化工程技术研究中心,上海200237

年份：2016

卷号：44

期号：12

起止页码：1422

中文期刊名：燃料化学学报

外文期刊名：Journal of Fuel Chemistry and Technology

收录：CSTPCD;;EI(收录号：20165103150123);Scopus;北大核心:【北大核心2014】；CSCD:【CSCD2015_2016】；

基金：国家自然科学基金(21376081)资助~~

语种：中文

中文关键词：碳酸钠;催化气化;孔隙结构;反应活性

外文关键词：Na2CO3; catalytic gasification; pore structure; reactivity

摘要：基于热重分析仪开展负载碳酸钠神府烟煤/遵义无烟煤煤焦气化实验,并借助扫描电子显微镜和孔结构及比表面积分析仪表征焦样孔结构及表观结构变化,考察了反应温度(650-800℃)、气化剂(水蒸气、二氧化碳)及碳酸钠负载量(钠离子负载量2.2%、4.4%、6.6%,质量分数)对神府烟煤/遵义无烟煤焦样气化反应活性的影响。结果表明,碳酸钠有利于促进神府/遵义煤热解过程孔隙结构的发展。在二氧化碳气氛下,适宜催化剂负载量使神府烟煤反应活性提高,过多负载催化剂堵塞煤焦内部孔隙结构,使得气化反应活性降低,遵义无烟煤反应活性随负载量增加而提高,两者反应活性均随温度升高而提高。在水蒸气气氛下,神府烟煤/遵义无烟煤在一定条件下反应活性随催化剂负载量增大、温度升高而提高。碳酸钠的添加能够在保证气化反应性的前提下降低气化反应温度和活化能。
The coal char gasification experiments with Na2 CO3 as catalyst was investigated on T G A . The pore structure and apparent structure evolution characteristics of char were studied by scanning electron microscopy and pore structure and specific surface area analyzer. The influence of temperature （650-800 益）, gasification agent （steam, CO2） and sodium carbonate loadings （N a ＋ loading amounts 2.2%,4.4% ,6 .6 % ） on the gasification reactivity of Shenfu bituminous coal （SF ） and Zunyi anthracite （ZY ） were investigated. The results show that the loading of Na2C〇3 stimulates the development of pore structure in pyrolysis process. In the atmosphere of C〇 2, there was a saturated catalyst capacity for SF and excessive catalyst loading could block internal pore structure of coal, leading to the decrease of gasification reactivity. Z Y gasification reactivity increases with catalyst loading,and both S F and ZY gasification reactivity increase with the increase of temperature. In the atmosphere of steam, both SF and ZY gasification reactivity increase with the rise of catalyst loading and temperature. Na2CO3 is favorable for the decrease of reaction temperature and activation energy under the desired gasification rate .