Wood dissolving pulp dust removing agent and dust removing method

• Main Authors: YU DONGMEI, OUYANG ZHIZHOU, LI RONGGANG, WU CHAOJUN, WANG DAIQI, LI SHUPING
• Format: Patent
• Language: Chinese; English
• Published: 10.10.2017
• Subjects: APPARATUS THEREFOR; PAPER-MAKING; PRODUCTION OF CELLULOSE; PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCESFROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; TEXTILES

The invention relates to the technical field of wood dissolving pulp preparation, in particular to a wood dissolving pulp dust removing agent, which comprises a seeping agent, a mixed acid treatment agent and a chelating agent. The wood dissolving pulp dust removing method comprises the steps of seeping treatment, mixed acid treatment and chelating treatment, wherein the interface tension in seam and vein hole positions of the rinsed wood dissolving pulp fiber cell walls can be reduced through the seeping agent in the dust removing agent; the mixed acid treatment agent and the chelating agent are added for chelating transition metal ions and acidifying silicate ions to generate silicic acid precipitates; the silicate ions and the transition metal ions are subjected to reinforced separation; the acid consumption is low, so that the reduction of the polymerization degree of cellulose in the wood dissolving pulp is avoided; the removal rate of dust contents in the wood dissolving pulp is improved, and the reduct