摘要
针对煤直接液化的高温高压苛刻反应条件和高昂的氢气成本问题,通过降低煤液化反应温度、压力和更换供氢气氛等方法来优化工艺过程。选用四种铁基催化剂研究低阶煤在甲烷气氛下温和液化的反应特性,研究结果表明:神华黑山长焰煤HS在温度350℃、初始压力3 MPa的甲烷气氛下液化产物为轻质气体、液化油和沥青质;以FeSO_(4)为催化剂时沥青质的产率最高达到8.03%,并将煤液化的转化率提升了6.10%;以FeS为催化剂时油气产率提升了3.48%;助剂硫元素的加入对煤液化反应总转化率的提升有着重要作用;Fe粉、Fe+S和FeS催化剂的加入有助于提升煤液化油中单环芳烃的含量。
Aiming at the high temperature and high pressure reaction conditions and high hydrogen cost of direct coal liquefaction,the process was optimized by reducing the temperature and pressure of coal liquefaction reaction and improving the hydrogen supply atmosphere.Four kinds of iron-based catalysts were used to study the reaction characteristics of mild liquefaction of low-rank coal under methane atmosphere.The results show that the liquefaction products of Shenhua Heishan long flame coal HS are light gas,liquefied oil and asphaltene under methane atmosphere of 350℃and initial pressure of 3 MPa.When FeSO_(4)is used as catalyst,the yield of asphaltene reaches the highest 8.03%,and the conversion rate of coal liquefaction increases by 6.10%.When FeS was used as catalyst,the oil and gas yield increased by 3.48%.The addition of sulfur element plays an important role in the improvement of the total conversion of coal liquefaction reaction.The addition of Fe powder,Fe+S and FeS catalysts is helpful to increase the content of single cyclic aromatic hydrocarbons in coal liquefaction oil.
作者
马桂林
周亚笑
吴诗勇
李超
黄峰
白金锋
徐静
MA Gui-lin;ZHOU Ya-xiao;WU Shi-yong;LI Chao;HUANG Feng;BAI Jin-feng;XU Jing(University of Science and Technology Liaoning,Institute of Chemical Engineering,Liaoning Province coal chemical industry technology innovation platform,Anshan,Liaoning 114051,China)
出处
《煤炭加工与综合利用》
CAS
2024年第3期40-44,共5页
Coal Processing & Comprehensive Utilization
基金
辽宁省兴辽英才计划科技创新领军人才项目(XLYC2002063)。
关键词
低阶煤
铁基催化剂
温和液化
甲烷
low-rank coal
iron-based catalyst
mild liquefaction
methane
