Treatment method of coal gasification fine slag

• Main Authors: LI HUI, ZHU JIANQIANG, GUO PANCHUN, SU MEI, CAO XINFENG, FENG YONG, GUAN GANG, SHAN FURONG, SONG XIAOLING, CHEN HAIQUAN, JIANG ANDONG, PAN XIAOFENG
• Format: Patent
• Language: Chinese; English
• Published: 28.08.2020
• Subjects: PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; SEPARATION; TRANSPORTING

The invention relates to a treatment method of coal gasification fine slag. The treatment method comprises the following steps: 1, fine slag slurry is separated in a cyclone, fine particle slurry enters a first thickener from an overflow port of the cyclone, and medium-coarse particle slurry enters a first tower filter press from an underflow port of the cyclone; 2, filter pressing is performed onthe medium-coarse particle slurry entering the first tower filter press to obtain a filter cake and a filtrate, and the filter cake and the filtrate are recovered; 3, the fine particle slurry entering the first thickener is settled in the first thickener, and settled paste enters a second tower filter press from the first thickener; and 4, filter pressing is performed on the paste entering the second tower filter press to obtain a filter cake and a filtrate, and the filter cake and the filtrate are recovered. The formed filter cakes are low in water content, good in solid-liquid separation effect, high in waste liqui