Method for regulating and controlling coal quality in coal gasification process

• Main Authors: DONG KEZENG, WANG JINGDAI, HE LELU, ZHOU YEFENG, YANG YONGRONG, HUANG ZHENGLIANG, ZHU ZICHUAN, JIANG BINBO, SUN JINGYUAN, GUO JIAN, WANG YULIANG, ZHANG QING, LIAO ZUWEI
• Format: Patent
• Language: Chinese; English
• Published: 08.05.2013
• Subjects: MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLIDMATERIALS OR FLUIDS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROMSOLID MATERIALS OR FLUIDS; PERFORMING OPERATIONS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS; SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATICTABLES OR JIGS; TRANSPORTING

The invention discloses a method for regulating and controlling coal quality in a coal gasification process. The method for regulating and controlling the coal quality in the coal gasification process comprises the following steps of: conveying raw material coal into a coal grinding device to be grinded to coal powder and drying the coal powder; conveying the coal powder into a friction charge static separation device; conveying fine coal obtained from a fine coal collecting groove into a gasification device for reaction; obtaining tailings from a tailing collecting groove; recycling and reutilizing the tailings or carrying out further sorting on the tailings through the friction charge static separation device; when the ash content of the coal powder is less than 8%, mixing fly ash from the gasification device and/or ash residues with the raw material coal; conveying a mixture into the coal grinding device to be grinded to the coal powder and drying the coal powder; and conveying the coal powder into the fri