动力用劣质煤燃烧特性研究（上）  

STUDY ON THE COMBUSTION CHARACTERISTICS OF INFERION POWER COAL (THE FIRST PART)

作　　者：晏蓉[1] 赵思安 郑楚光[1] 周燕陵[1] 曾羽健[1] 

机构地区：[1]华中理工大学煤燃烧国家重点实验室

出　　处：《冶金能源》1995年第5期45-50,共6页Energy For Metallurgical Industry

摘　　要：用热重分析法采用不同升温速率研究了六种煤样的ＴＧ，ＤＴＧ，ＤＴＡ及Ｔ曲线，用基辛格法计算得到不同煤燃烧反应的活化能，该值的大小与挥发分及灰分含量的比值的变化趋势基本相同．研究了同生矿物和后生矿物对煤着火和燃烧的不同影响．同时发现在用比表面分析法得到的吸附等温曲线及比表面积、平均孔径和体积等数据与热重分析、矿物质分析数据间可建立合理的关联．提出评价煤燃烧反应特性时应综合考虑燃烧反应前提条件──氧气与碳充分接触，以及化学反应本质──碳反应的活化能．G, DTG, DTA and T-curve of six coal samples are studied with different temperature program by thermogravimetric analysis. The combustion reaction activation energy of different coals are obtained by Kisinger method. The changing tendency of the ratios of activation energy to volatile and to ash content is nearly the same. The influences of syngenetic and secondary minerals on inflammation and combustion of coal are also researched. It is discovered that adsorption isotherm curve derived from speific suface analysis, speific surface area, average aperture and pore volume can reasonably relate to thermogravimetric analysis and mineral analysis data. Sufficient contace of oxygen with carbon, the premise of combustion reaction, and activation energy of carbon reaction, the essence of chemical reaction, should be comprehensively taken into accout when the characteristics of coal combustion reaction is to be evaluated.

关 键 词：煤 燃烧 热重分析法 比表面分析法 活化能 

分 类 号：TQ534[化学工程—煤化学工程]