龙泉煤层气田产甲烷菌群富集的厌氧产气中试研究

第47卷第7期2019年7月煤炭科学技术CoalScienceandTechnologyVol.47No.7Jul.2019魏国琴，何环,王江泽，等.龙泉煤层气田产甲烷菌群富集的厌氧产气中试研究[J].煤炭科学技术,2019,47(7)：249-254.doi：10.13199/j.cnki.cst.2019.07.033WEIGuoqin,HEHuan,WANGJiangze,etal.Pilotstudyonmethanogens-enrichedanaerobicgasproductioninLongquanCoalbedMethaneField[J].CoalScienceandTechnology,2019,47(7)：249-254.doi:10.13199/移动扫码阅读J-cnki.cst.2019.07.033龙泉煤层气田产甲烷菌群富集的厌氧产气中试研究魏国琴,何环3,王江泽2,韩作颖,牛江露1.2,陶鲍鹏1.2(1.山西晋城无烟煤矿业集团有限责任公司煤与煤层气共釆国家重点实验室，山西晋城0480J2；2.易安蓝焰煤与煤层气共采技术有限责任公司，山西晋城048012；3中国矿业大学化工学院煤炭加工与高效洁净利用教育部重点实验室，江苏徐州221116)摘要：为探讨龙泉煤层气田产甲烷菌群降解烟煤产甲烷的潜力，研究富集并驯化了龙泉煤层气田产甲烷菌群；以龙泉矿烟煤为母质，开展产甲烷菌群降解煤产气的实验室研究以及中试研究。结果表明，龙泉煤层产甲烷菌群经富集驯化后，降解烟煤产甲烷的浓度由8.2%上升至19.0%,且产气周期缩短。中试试验中，产甲烷浓度最高达27.06%,产甲烷速率达0.159mL/(g•d)；且在中试发酵产气的衰退期，向发酵罐内添加酵母粉、氮源、磷盐、镁盐、维生素、微量元素，可重新激活产甲烷菌群的活性,使其降解烟煤产甲烷的浓度回升。由此可见，富集驯化龙泉煤层产甲烷菌群可显著提高其降解烟煤产甲烷的能力；在发酵产气衰退期补加营养物质，可以活化产甲烷菌群，恢复其降解烟煤产甲烷的能力。关键词：煤层气；产甲烷菌群;功能菌群活化；产气模拟；厌氧发酵调控中图分类号:TD94；TQ529.1文献标志码：A文章编号:0253-2336(2019)07-0249-06Pilotstudyonmethanogens-enrichedanaerobicgasproductioninLongquanCoalbedMethaneFieldWEIGuoqin1'2,HEHuan3,WANGJiangze1,2,HANZuoying1'2,NIUJianglu12,TAOKunpeng1'2(StateKeyLaboratoryofCoalandCoal-bedMethaneStimultaneousExtraction,Jincheng048012,China；2.YianLanyanCoalandCoal-bedMethaneStimultaneousExtractionTechnologyCo.,Ltd.,Jincheng048012,China；3.SchoolofChemicalEngineering,KeyLaboratoryofCoalProcessingandEfficientUtilizationMinistryofEducation,ChinaUniversityofMiningandTechnology,Xuzhou221116,China)Abstract:InordertoexplorethepotentialofmethanogenicbacteriainLongquancoalbedmethanefieldtodegrademethaneproductioninbituminouscoal,theenrichmentanddomesticationofmethanogensinLongquancoalbedmethanefieldwasstudied.ThelaboratorystudyaswellaspilotstudyonthedegradationofcoalgasproductionbymethanogenswascarriedoutwithLongquanminebituminouscoalasparentmaterial.Theresultsshowedthattheconcentrationofmethanogenicdegradationofbituminouscoalincreasedfrom&2%to19%afteren­richmentanddomesticationofmethanogens,thecycleofgasproductionstabilitywasshortened.In