天津地区煤炭地下气化过程中典型污染物富集特征研究  

Research on Accumulation Characteristics of Typical Pollutants in Underground Coal Gasification Process in Tianjin Region

作　　者：王志刚[1] 梁杰[2] 曹健[1] 江胜国[1] 

机构地区：[1]天津华北地质勘查局地质研究所,天津300170 [2]中国矿业大学(北京)化学与环境工程学院煤炭工业地下气化工程研究中心,北京100083

出　　处：《煤炭技术》2018年第1期144-146,共3页Coal Technology

摘　　要：在煤炭地下气化模型试验的基础上,研究了天津市静海地区煤炭在地下气化过程中多环芳烃和Pb、Zn、Cd、As等有代表性的有机物和微量元素的富集特征,探讨了其反应机理,并制定相应的防治对策。试验表明:多环芳烃主要分布于地下燃空区与地面煤气冷凝水中,不同工况多环芳烃的含量不同,空气气化>2个进气列并列气化>富氧气化>闭炉停气>背景值;微量元素Pb和Zn有向还原区灰渣富集的特性,而Cd和As则向干馏干燥区灰渣富集的较多。Based on the model test of underground coal gasification, researched accumulation characteristics of the representative organics such as polynuclear aromatic hydrocarbons and trace elements such as Pb, Zn, Cd and As etc. in the underground coal gasification process of Jinghai, Tianjin. Meanwhile, discussed the reaction mechanisms of gasification and made the related counterplans. The tests indicate that the polynuclear aromatic hydrocarbons are mainly distributed in the ground condensed water of coal gas and underground fired out area, the content varied as the conditions, generally air gasification 〉synchronous gasification of two intake pipes 〉oxygen-enriched gasification〉gasification after the furnace is closed〉the environment background value; the Pb and Zn are mainly accumulated in cinder of the deoxygenated zone, and the Cd and As are mainly accumulated in cinder of the dry distillation zone.

关 键 词：煤炭地下气化 污染物 富集特征 防治对策 

分 类 号：TD163[矿业工程—矿山地质测量]