半焦煤的燃烧及综合利用研究  

Research on Combustion and Comprehensive Utilization of Semi-coking Coal

作　　者：吴燕 董颖涛 徐静 Wu Yan;Dong Yingtao;Xu Jing(Shaanxi Coalfield Geological Engineering Technology Co.,Ltd.,Xi'an 710021,China;Shaanxi Coal Geology Group Co.,Ltd.,KeyLaboratory of Coal Resources Exploration and Comprehensive Utilization,Ministry of Natural Resources,Xi'an 710021,China;Powerchina Northwest Engineering Co.,Ltd.,Xi'an 710000,China)

机构地区：[1]陕西煤田地质工程科技有限公司,陕西西安710021 [2]陕西省煤田地质集团有限公司,自然资源部煤炭资源勘查与综合利用重点实验室,陕西西安710021 [3]中国电建集团西北勘测设计研究院有限公司,陕西西安710000

出　　处：《科学技术创新》2022年第32期1-4,共4页Scientific and Technological Innovation

摘　　要：在对比褐煤与烟煤裂解特性和燃烧特性的基础上,选择综合性能更优的褐煤作为原材料,采用管式炉制取半焦煤。并对比了褐煤煤粉与半焦煤的燃烧特性,结果表明半焦煤的着火温度更高、最大反应速率偏低,燃烧特性较差。随后选择半焦煤的吸附特性和富氧燃烧特性作为研究指标,分别进行试验对不同类型半焦煤的特性展开了研究。结果表明,在氧浓度为40%时,600℃半焦煤的着火温度与煤粉接近,燃烧效果达到最优;在裂解温度为800℃时制取的半焦煤,吸附特性最优。在工业生产中,可根据半焦煤利用方向的不同,调节半焦煤的制取温度和反应氧浓度,从而获得利用价值更高的半焦煤产品。On the basis of comparing the cracking characteristics and combustion characteristics of lignite and bituminous coal,lignite with better comprehensive performance is selected as raw material,and semi-coking coal is produced by tube furnace.The combustion characteristics of lignite pulverized coal and semi-coking coal were compared,and the results showed that the ignition temperature of semi-coking coal was higher,the maximum reaction rate was lower,and the combustion characteristics were poor.Then,the adsorption characteristics and oxygen-enriched combustion characteristics of semi-coking coal were selected as the research indicators,and the characteristics of different types of semi-coking coal were studied by experiments.The results show that when the oxygen concentration is 40%,the ignition temperature of 600℃semi-coking coal is close to that of pulverized coal,and the combustion effect is optimal;the semi-coking coal prepared when the pyrolysis temperature is 800℃has the best adsorption characteristics.In industrial production,the production temperature and reaction oxygen concentration of semi-coking coal can be adjusted according to the different utilization directions of semi-coking coal,so as to obtain semi-coking coal products with higher utilization value.

关 键 词：半焦煤 裂解反应 吸附特性 富氧燃烧特性 

分 类 号：X784[环境科学与工程—环境工程]