褐煤低压加氢液化技术与下游产品探讨  

Discussion on Lignite Low-pressure Hydro-liquefaction Technology and Its Downstream Products

作　　者：曾纪龙 周芳 聂李红 Jilong;Zhou Fang;Nie Lihong(China Chengda Engineering Co., Ltd., Chengdu Sichuan 610041, China)

机构地区：[1]中国成达工程有限公司

出　　处：《煤化工》2019年第3期1-7,共7页Coal Chemical Industry

摘　　要：简述了国内外煤直接液化主要技术及特点,通过分析,得出10MPa褐煤低压加氢液化技术是可行的,介绍了褐煤低压加氢液化技术的特点和主要流程,该技术采用一步法制油煤浆、过滤分离固液及干馏-激冷的残渣处理工艺,为褐煤液化和液化残渣处理提供一条新思路。对比了高、低压加氢液化的技术参数、工艺特点、煤耗和产品的费用,探讨了褐煤低压加氢液化下游产品的开发,认为开发高附加值油品以及针状焦、泡沫炭、碳纤维等碳材料可显著提高低压加氢液化的经济效益。The main technologies and characteristics of coal direct liquefaction at home and abroad were briefly described in the paper. Through the analysis, it was concluded that lignite low-pressure hydro-liquefaction technology under 10 MPa was feasible. And the characteristics and main processes of lignite low-pressure hydro-liquefaction technology were introduced. One-step coal oil slurry preparation, filtering separation of solid and liquid and retorting-quenching slag treatment process were adopted to provide a new way for lignite liquefaction and its residue treatment. Also, the technical parameters, process features, coal consumption and product cost of high-pressure and low-pressure hydro-liquefaction were compared. The development of downstream products of lignite low-pressure hydro-liquefaction was discussed. It was believed that developing high value-added oil products and carbon materials such as needle coke, carbon foam and carbon fiber could significantly improve low-pressure hydro-liquefaction.

关 键 词：褐煤 低压加氢液化 一步法制油煤浆 过滤分离 干馏-激冷残渣处理 碳材料 

分 类 号：TQ529[化学工程—煤化学工程]