| 摘要 |
PURPOSE:To prepare coal/water slurry having high concn. of coal of a particle size suitable for fluid gasification and capable of being stably supplied without sedimentation, by adding and mixing water compounded with a thickening agent and a surfactant, with coal adjusted in particle size. CONSTITUTION:Coal 15 adjusted in particle size and consisting of 60-75wt% coarse coal of a particle size of about 0.25-1mm. and 40-25wt% fine coal of a particle size <= about 0.25mm., is formed by crushing and classifying coal 11 by using a rough crusher 101 and fine crusher 102. Water 20, a thickening agent 21 such as polyethylene oxide and a surfactant 22 such as sodium alkylbenzene- sulfonate are fed into a mixing tank 201 and mixed by agitation. The obtd. liquid medium 25 is fed along with said coal 15 adjusted in particle size to a mixing tank 202 and mixed/agitated to prepare coal/water slurry (marks 24 and 31 each represent a pump).
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