摘要
鉴于传统煤炭地下气化工艺生产煤气热值低的状况 ,提出了双火源两阶段地下气化的新方法 ,并介绍了其基本原理。在物料平衡的基础上 ,对两阶段煤炭地下气化方法理想气化参数进行了计算。简述了双火源两阶段工艺的现场试验过程 ,通过对试验结果的分析 ,指出了中高热值水煤气的形成原因 ,从而证明了双火源两阶段地下气化方法的合理性和可行性 ,进一步表明双火源两阶段是我国煤炭地下气化全面实现商业化应用的重要技术工艺。
The new method of the double fire source two stage underground gasification is suggested, in view of situation that coal gas heating value is low, which is produced by traditional technique of the underground coal gasification, and its basic principles are introduced On the basis of mass balance, the ideal gasification parameters of the two stage underground coal gasification method have been calculated, field test process of the double fire source two stage gasification craft is sketched, which makes combustible compositions in the underground gas produced in the process of underground coal gasification raise to a greater extent (H 2>45%, CO>8% and CH 4>7%) The results indicate that the time ratio of the first stage and the second one is 1∶1 under double fire source condition, hence, production time for medium high heating value underground water gas increases obviously In the light of the computation results of gasification parameters on the two stage, calculation value basically coincides with the real measurement one in the process of the test, and the ratio of steam supplied into gasification tunnel to blasting amount is 0 481 which is identical with that of the two parameters amount supplied in the industrialization test on the whole According to the test results, the formation of underground water gas of medium high heating value is described The reasonableness and feasibility of the double fire source two stage underground gasification method is proved, it further indicates that the present method is an important technology of underground coal gasification for commercialization application to the full in China
出处
《燃料化学学报》
EI
CAS
CSCD
北大核心
2002年第2期119-123,共5页
Journal of Fuel Chemistry and Technology
基金
国家自然科学基金 (5 990 60 14 )~~
关键词
双火源
煤炭地下气化
地下水煤气
double fire source
two stage
underground coal gasification
underground water gas
