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- Title
Research on Concentrated Preparation Technics of Coal-Water Slurry from Lignite.
- Authors
YANG Ming-shun; KANG Shan-jiao; LIU Xin; LIU Wei-bing; QI Yong-li; JIANG Peng; MEI Chang-song; LI Chun-qi
- Abstract
Aiming at the status of low concentration (less than 49.0%) of coal-water slurry from Inner Mongolia lignite which made it difficult for the gasifier to run normally. In this paper, primary process parameters of concentrated lignite preparation were obtained on the bases of investigations into the influences of temperature, species and amounts of additives, and coal size-distribution on concentration of lignite. Besides, Aspen Plus was applied to simulate the gasification of lignite with various concentrations. The results showed that in the presence of compound additive of 0.5% mixed with 0.4% viscosity additive, a lignite with concentration of 54.1%, which increased by 5.6% at 50 °C compared with existing lignite with optimized coal size-distribution. Moreover, the data from gasification simulation demonstrated that the syngas production and cold gas efficiency of the concentrated lignite were 78.07% and 70.25% respectively, which were remarkably superior to that of existing lignite.
- Publication
Coal Science & Technology (0253-2336), 2014, Vol 42, Issue 7, p116
- ISSN
0253-2336
- Publication type
Article
- DOI
10.13199/j.cnki.cst.2014.07.029