煤炭地下催化气化工艺的研究  

STUDY ON THE METHOD OF CATALYSIS ON UNDERGROUND COAL GASIFICATION

作　　者：梁新星[1] 梁杰[2] 孙春宝[1] 沈芳 

机构地区：[1]北京科技大学,北京博士生工程师100080 [2]中国矿业大学,北京教授博士生导师100083 [3]北京北大先锋科技有限公司,北京硕士生工程师100080

出　　处：《煤炭转化》2013年第1期34-38,共5页Coal Conversion

基　　金：国家高技术研究发展计划(863计划)项目(2011AA050106)

摘　　要：提出煤炭地下催化气化新工艺的概念,研究利用高压雾状催化剂-水蒸气带入装置并以钙基化合物为催化剂进行煤炭地下催化气化.在小型模拟地下气化炉中,以大雁褐煤为煤样,选用氢氧化钙水溶液(质量分数为5%,10%,15%)为催化剂进行纯氧气化.结果表明,添加氢氧化钙水溶液气化后的煤气与不加催化剂、添加10%CaCO3气化后的煤气相比,煤气中甲烷组分可以达到7.58%,煤气热值提高到5.43MJ/m3～7.87MJ/m3,产气率提高28%～69%,且可以稳定产气.催化剂组成(质量浓度)以添加Ca(OH)2为10%～15%之间进行气化效果最佳,为提高煤炭地下气化的稳定性开辟了一条全新的路径.ABSTRACT This paper come up with a new concept, the method of catalysis on UCG, by introducing stream, a high-pressure vaporific catalysts, into installation so as to conduct UCG with calcium salts as its catalysts. In another oxygen gasification experience, we utilise the cata- lysts of calcium hydroxide water solution, the mass fraction of which are respectively 5%, 10%, 15% ,and 20%. It is found that the CH4 components and value of gas can be 7.58% higher, 5.43 MJ/m3-7.87 MJ/m3 after gasification under high-pressure vaporific catalysts than that with 10% CaCO3 and no any catalysts; the former, also brings higher rate of 28%-69% of producing gas and more stable production. This paper demonstrates that an optimized gasification result will come if mass fraction of Ca（OH）2 range from 10% to 15~/00 . This shows a brand new way to ensure UCG stablitiy. KEY WORDS underground coal gasification（UCG）, catalytic coal gasifaction, calcie compound

关 键 词：煤炭地下气化 催化气化 钙基化合物 

分 类 号：TQ546[化学工程—煤化学工程] O643.36[理学—物理化学]