Bamboo chemimechanical pulp bioenzyme pretreatment method

Abstract

The invention discloses a bamboo chemimechanical pulp bioenzyme pretreatment method. The bamboo chemimechanical pulp bioenzyme pretreatment method comprises the following steps: feeding bamboo pieces into a steaming cabin for normal-pressure pre-steaming after screening the bamboo pieces, and then carrying out first-stage screw extrusion; adding bioenzyme in an extruded material for pretreatment, then carrying out high-temperature deactivation, washing and dewatering, then carrying out first-stage and second-stage chemical pre-impregnating in sequence, then carrying out first-stage high-consistency normal-pressure pulp grinding by using a high-consistency disc refiner of which rho is 300, and completing bleaching reaction by enabling pulp to stay in a high-consistency reaction cabin for about 50 to 60 minutes; then carrying out follow-up pulp grinding by using a disc refiner, preparing pulp samples in different Canadian freeness degrees by controlling and inputting different pulp grinding energy consumptions, respectively recording the pulp grinding energy consumption needed for preparing each pulp sample, and using the different pulp samples for paper pulp performance testing after respectively carrying out latent elimination, acidification, washing, screening and dewatering concentration. According to the bamboo chemimechanical pulp bioenzyme pretreatment method disclosed by the invention, by carrying out pretreatment on bamboo bioenzyme, compared with a traditional PRC (Preconditioning Refiner Chemical)-APMP (Alkaline Peroxide Mechanical Pulping) technology, the difference in respects of pulp grinding energy consumption and pulp performance can be observed, and a reference technology is provided for preparing chemimechanical pulp by using bamboos as raw materials.

Description

technical field [0001] The invention relates to the papermaking industry, in particular to a biological enzyme pretreatment method for bamboo chemical mechanical pulp. Background technique [0002] The rapid development of the global paper industry has made China a major producer and consumer of paper products in the world, with production and consumption ranking second in the world. However, the shortage of papermaking raw materials and the environmental pollution of the papermaking industry have become the biggest problems restricting the development of my country's papermaking industry. In 2007, the National Development and Reform Commission clearly pointed out in the "Paper Industry Development Policy" that we should make full use of both domestic and foreign resources, increase the proportion of wood, expand the recycling of waste paper, rationally use non-wood pulp, and gradually form wood fiber and waste paper. Mainly, non-wood fiber supplemented papermaking raw mate...

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Problems solved by technology

However, there are few studies on the preparation of chemical mechanical pulp by biological enzyme pretreatment of bamboo raw materials.

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