煤质技术2026，Vol.41Issue(1)：1-11,11.DOI:10.3969/j.issn.1007-7677.2026.01.01
基于煤相分析的煤炭直接液化性能评价方法:以宁东煤田鸳鸯湖矿区延安组主煤层为例
Evaluation method of direct liquefaction based on coal facies analysis:Take main coal seams of Yan'an formation in Yuanyanghu mining area in Ningdong Coalfield
摘要
Abstract
In order to quantitatively evaluate the coal performance for direct liquefaction,the"Worst Restriction Law"or"One-vote-down System"was adopted to classify and evaluate for bituminous coal for direct liquefaction.The microlithology combined with coal quality and geochemistry were used to expound the relationship among coal petrolo-gy and quality-coal facies-direct liquefaction behavior,which provide a theoretical basis for new evaluation method of direct liquefaction.The results show that paleomire sequences of single coal seam are different under the control of different sedimentary environment,the No.2 coal seam has four cycles under the control of fluvial facies,in compari-son,the No.6 coal seam has two cycles influenced by lacustrine deltaic facies.Under the same cycle of coal facies,characteristics of coal petrology and organic facies in the No.2 and No.6 coal seams vary consistently,from the bot-tom to the top,macroscopic lithotypes of coals vary from bright or semibright coals to semidull or dull coals,vitrinite-decreased and inertinite-increased,the percentage of herbaceous plants decreases but woody plants increases,the a-queous dynamic condition in swamps undergoes the weak-strong evolution,the aqueous medium in peat swamp trans-forms from reduction to weak oxidizing environment.The coal formed from wet herbaceous swamp facies is suitable for direct liquefaction,while the coal formed from wet forest marsh facies can be used for hydrogenation liquefaction.The coal derived from dry forest marsh facies is not suitable for liquefaction.According to the evaluation method of coal di-rect liquefaction performance based on coal facies analysis,the No.2 coal seam can be used as liquefaction coal after washing,whereas,the No.6 coal seam is not suitable for direct liquefaction.关键词
宁东煤田/鸳鸯湖矿区/煤相/煤炭液化/评价方法/液化性能Key words
Ningdong coalfield/Yuanyanghu mining area/coal facies/coal liquefaction/evaluation method/liq-uefaction performance分类
化学化工引用本文复制引用
魏迎春,董博,曹代勇,贾煦,宁树正,张昀,李新,王鑫..基于煤相分析的煤炭直接液化性能评价方法:以宁东煤田鸳鸯湖矿区延安组主煤层为例[J].煤质技术,2026,41(1):1-11,11.基金项目
国家自然科学基金资助项目(42472231,42372187) （42472231,42372187）
宁夏2023年地质事业发展专项资金资助项目(640000233000000011005) （640000233000000011005）
中国煤炭地质总局科技创新资助项目(ZMKJ-2025-Z04-1) （ZMKJ-2025-Z04-1）
