煤的生物厌氧降解产气模拟及现场工业试验  

Simulation and field industrial test of gas production through anaerobic biodegradation of coal

作　　者：宋燕莉 郭鑫 吴鹏 韩作颖 牛江露 Song Yanli;Guo Xin;Wu Peng;Han Zuoying;Niu Jianglu(State Key Laboratory of Coal and CBM Co-mining,Jinneng Holding Group Co.,Ltd.,Jincheng Shanxi 048000,China;Yi′an Lanyan Coal and Coalbed Methane Co-mining Technology Co.,Ltd.,Jincheng Shanxi 048000,China)

机构地区：[1]晋能控股集团有限公司煤与煤层气共采国家重点实验室,山西晋城048000 [2]易安蓝焰煤与煤层气共采技术有限责任公司,山西晋城048000

出　　处：《煤化工》2022年第3期112-115,120,共5页Coal Chemical Industry

基　　金：山西省煤层气联合研究基金项目(2016012009);山西省应用基础研究项目青年科技研究基金(201801D221354)。

摘　　要：针对赵庄地区煤层气井地面抽采效果差的问题,煤与煤层气共采国家重点实验室在实验室模拟生物厌氧降解煤产气的基础上,在赵庄矿区开展煤层气井现场注入培养基工业试验,考察微生物降解煤增产煤层气的效果。结果表明:煤层水和煤的共富集产气量高于煤层水的富集产气量;发酵罐放大模拟培养时,产气量达5.5 m^(3)/d;现场注入培养基后,甲烷产量增长了8 m^(3)/d;Mg^(2+)、K^(+)、Cl^(-)、PO_(4)^(3-)等离子浓度先升后降,SO_(4)^(2-)离子浓度总体下降,可能是因为在井下流失或是被菌群生长利用。培养基的注入提高了菌群的丰富度,为产气提供了有力条件。同时为了解决培养基一次性注入排采存在的弊端,提出了培养基补加循环系统的设想。In view of the poor surface pumping effect of coalbed methane wells in Zhaozhuang area, the State Key Laboratory of Coal and CBM Co-mining carried out the industrial test of on-site injection of culture medium into coalbed methane wells in Zhaozhuang mining area on the basis of simulating anaerobic biodegradation of coal to produce gas in the laboratory, investigating on the effect of coal micro-biological degradation to increase the CBM output. The results showed that the co-enrichment gas production of coal seam water and coal was higher than that of coal seam water. When the fermentation tank had scale-up simulating culture, the gas output reached 5.5 m^(3)/d. After the culture medium was injected on site, the methane output increased by 8 m^(3)/d, the concentrations of Mg^(2+), K^(+), Cl^(-) and PO_(4)^(3-) first increased and then decreased, and the decrease of SO_(4)^(2-) ion concentration might be due to the loss in the well or the flora growth and utilization. The injection of culture medium improved the richness of flora and provided favorable conditions for gas production. At the same time, in order to resolve the drawback of one-time injection and drainage of culture medium, the addition of supplemented circulation system of culture medium was proposed.

关 键 词：煤层气 微生物 厌氧降解 模拟培养 放大培养 工业试验 培养基注入 补加循环系统 

分 类 号：TQ546[化学工程—煤化学工程]