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A kind of biological enzyme pretreatment method of bamboo chemical mechanical pulp

A technology of chemical machinery and biological enzymes, applied in the field of papermaking industry, to achieve the effect of reducing the tear index, reducing the power consumption of pulping, and improving the tensile index and burst index

Active Publication Date: 2018-05-29
INST OF CHEM IND OF FOREST PROD CHINESE ACAD OF FORESTRY
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  • Abstract
  • Description
  • Claims
  • Application Information

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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.

Method used

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  • A kind of biological enzyme pretreatment method of bamboo chemical mechanical pulp
  • A kind of biological enzyme pretreatment method of bamboo chemical mechanical pulp
  • A kind of biological enzyme pretreatment method of bamboo chemical mechanical pulp

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Embodiment Construction

[0020] The present invention will be described in detail below through specific examples.

[0021] Experimental procedure: After the bamboo slices are screened by TMI bamboo slices, the qualified bamboo slices are washed with hot water, and sent to the steaming chamber for pre-steaming at normal pressure. The pre-steaming temperature is 105°C, and the time is 15 minutes. Carry out the first stage of screw extrusion (compression ratio 4:1, the same below). After extrusion, the material is added with biological enzymes for pretreatment with biological enzymes. After completion, high-temperature inactivation, washing and dehydration are carried out, and the first stage of chemical pre-impregnation is carried out. After the first stage of impregnation is completed, the material is washed and dehydrated, and the second stage of chemical pre-impregnation is carried out. After the second stage of impregnation, use The high-consistency disc refiner performs the first stage of high-co...

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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...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D21C5/00D21B1/12
CPCD21B1/12D21C5/00D21C5/005
Inventor 李红斌房桂干邓拥军沈葵忠施英乔丁来保韩善明焦健梁芳敏林艳田庆文梁龙
Owner INST OF CHEM IND OF FOREST PROD CHINESE ACAD OF FORESTRY
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