化工进展2018，Vol.37Issue(4)：1414-1420,7.DOI:10.16085/j.issn.1000-6613.2017-1289
基于固定床气化废水的褐煤水热提浓制浆
Concentrated coal-water slurry from lignite via hydrothermal process using fixed-bed gasification wastewater
杨明顺 1康善娇 2刘卫兵 2李春启 2段世慈 2解强2
作者信息
- 1. 中国矿业大学(北京)化学与环境工程学院,北京 100083
- 2. 大唐国际化工技术研究院有限公司,北京 100070
- 折叠
摘要
Abstract
The paper proposed to adopt coal-water slurry(CWS)gasification technology to solve the powder lignite- and wastewater-based constraints in the coal chemical industry. From the fixed-bed gasification unit of some coal-to-synthetic natural gas(SNG)plant, 5 sets lignite and 8 groups wastewater(W1—W8)were sampled and analyzed. Then each lignite was made directly or pretreated via hydrothermal process(HTP)into CWS in the presence of wastewater or using deionized water as a control group(W0). The results showed that the wastewater mostly contained high amount of organics and salts, especially for W8 with its solid content reaching 35.1%. For CWS prepared directly, the concentration ranged from 46% to 53% with W1—W7,equivalent to that of W0,while the concentration was less than 45% with W8.However,after pretreatment via HTP,the concentration of CWS with W0 and W4 exceeded to 58% and 56%,respectively, with an overall increase of 5.5%—11.7%(absolute value) in contrast to that of CWS prepared directly,and thus meeting the need of CWS gasification. Moreover,the research method would favor coupling the utilization of lignite and wastewater to broaden powder lignite application and promote waste water recycling and reduction.关键词
褐煤/废水/水煤浆/固定床气化/水煤浆气化/水热处理Key words
lignite/wastewater/coal-water slurry/fixed-bed gasification/coal-water slurry gasification/hydrothermal process分类
化学化工引用本文复制引用
杨明顺,康善娇,刘卫兵,李春启,段世慈,解强..基于固定床气化废水的褐煤水热提浓制浆[J].化工进展,2018,37(4):1414-1420,7.
