- Coal-water Slurry Producing Process System Therefor and Slurry Transfer Mechanism

摘要

In a coal-water slurry production system, the pulverized coal slurry is obtained by wet pulverization to a lower coalol particle size of 3 mm or less. The quality improvement process is performed on the pulverized coal slurry in a pressurized hydrothermal atmosphere of 300 ° C. or higher to produce a quality improved coal slurry. The improved coal slurry is dewatered to produce the improved coal cake and filtrate. The final coal-water slurry is produced from the quality upgraded coal cake. The filtrate is recycled to produce a pulverized coal slurry. Slurry conveying mechanisms are provided in the coal-water slurry production system to maintain stable conveying of the upgraded coal slurry from the high pressure slurry vessel to the low pressure slurry vessel.