Wood chip processing method and wood chip processing system

• Main Authors: HAO JIAFU, YANG WEI, ZHONG YICHANG
• Format: Patent
• Language: Chinese; English
• Published: 01.02.2022
• Subjects: CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW ORSIMILAR MATERIALS; CHEMISTRY; METALLURGY; NAILING OR STAPLING MACHINES IN GENERAL; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FORIMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILARMATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITHPERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; SEPARATION; TRANSPORTING; TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE; WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL

The invention discloses a wood chip processing method and a wood chip processing system. The wood chip processing method comprises the following steps: washing preheated wood chip raw materials with production water; dehydrating the washed wood chip raw materials, and separating to obtain a first filtrate; injecting a polyacrylamide flocculant into the first filtrate, and then carrying out inclined screening treatment; performing extrusion treatment on the dehydrated wood chip raw materials, separating to obtain second filtrate, and performing inclined screening treatment on the second filtrate; respectively injecting polydimethyldiallylammonium chloride and a polyacrylamide flocculant into the first filtrate and the second filtrate subjected to inclined screening treatment, and then carrying out precipitation treatment; and injecting precipitated water obtained by precipitating the first filtrate and the second filtrate into production water to wait for executing the step of washing the preheated wood chip r