Research on Supercritical Methanol Treatment of Lignite

摘要：

　　China has rich lignite reserves which are the proper resources to be liquefied.As its low coalification degree.much hydrogen is wasted.Solvent extraction can save hydrogen and improve its liquefaction performance.The paper studies supercritical methanol treatment of lignite with a device at high temperature and pressure.Experiments mainly locus on the effects of temperature,pressure,catalysts and pretreatment ways on the extraction rate.Results indicate that the extraction rate increases with raising of temperature and pressure below 330 ℃,10 MPa.When temperature exceeds 330 ℃,extraction rate decreases slightly.After swelling pretreatment in methanol for 8 h,the lignite is treated for 60min at 330 ℃,8.2 MPa with NaOH as catalyst(1%wt).The weight ratio of methanol/ Xilinhaote lignite is 5/1.Under these conditions,the extraction rate can reach 22.88%.

关键词： lignite supercritical methanol treatment extraction rate

作者: Luan Haiyan Wang Aiguo Zhang Qian Chen Fuming

作者单位: Dept.of Chemical Engineering Tsinghua University Beijing, China;Research Institute of Tsinghua Unive Shenzhen Key Lab of Separation Technology Research Institute of Tsinghua University in Shenzhen Shen

会议类型: 国际会议

会议名称: 2012年国际材料与化学工程研讨会

会议地点: 北京

会议语种:英文

页码: 158-161

在线出版日期: 2012-10-26（万方平台首次上网日期，不代表论文的发表时间）