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Paper pulp raw material cleaning treating method

A technology for cleaning and processing raw materials, applied in the field of papermaking, can solve the problems of increasing the amount of chemical raw materials for cooking and bleaching, increasing the cost of sewage treatment, and incomplete dust removal, so as to prevent colored elements from entering the pulping process and improve grass washing. Water efficiency, the effect of reducing water consumption for grass washing

Active Publication Date: 2008-03-05
FUJIAN QINGSHAN PAPER INDUSTRY CO LTD
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AI Technical Summary

Problems solved by technology

[0002] In papermaking production, the cleaning treatment of pulp raw materials, such as grass, wheat straw, wood chips, etc. (collectively referred to as raw materials, the same below), is essential. Most of the impurities are screened out, and then chemical cleaning is carried out with chemical cleaning agents. However, in practice, it is found that after this method, the dust removal is not complete. When some impurities enter the production process, the consumption of chemical raw materials for cooking and bleaching is increased. amount, increased cooking and bleaching time, also increased the difficulty of handling and increased production costs; Therefore, how to clean pulp raw materials has always been a major problem in paper production

Method used

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Embodiment Construction

[0005] The present invention will be described in detail below in conjunction with specific circumstances.

[0006] When concrete implementation, processing method of the present invention is implemented in the following form, at first raw material is evenly placed on the mesh belt as wheat straw, grass, thickness 1.5-2.5cm, three groups of milling rollers are housed successively on the mesh belt ( The mesh belt and rolling are driven by the motor), and the raw material is rolled three times. After the first rolling, it enters the eccentric wheel vibrating frame screen, so that the raw material is in a state of motion and vibration. At the same time, the crushed impurities are blown off by the strong wind, and then the raw material is Carry out the second rolling, enter the eccentric wheel vibrating frame screen for the second time, blow off the impurities on the raw material again under the state of motion and vibration, and then carry out the third rolling, and enter the clam...

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Abstract

The present invention relates to clean paper pulp material treating process, which includes rolling the biomass material on one netted belt, setting into sandwiched net and sucking impurity with strong blast, ultrasonic washing, spraying with hot water, and extruding in a screw extruder to 30 % dryness to obtain paper pulp material. The process has less damage to fiber, high paper pulp yield, low water consumption, capacity of preventing iron ion and non-ferrous metal ion from entering paper pulp and raised paper pulp whiteness.

Description

1. Technical field [0001] The invention relates to the field of papermaking, in particular to a method for cleaning pulp raw materials. 2. Background technology [0002] In papermaking production, the cleaning treatment of pulp raw materials, such as grass, wheat straw, wood chips, etc. (collectively referred to as raw materials, the same below), is essential. Most of the impurities are screened out, and then chemical cleaning is carried out with chemical cleaning agents. However, in practice, it is found that after this method, the dust removal is not complete. When some impurities enter the production process, the consumption of chemical raw materials for cooking and bleaching is increased. amount, increased cooking and bleaching time, also increased the difficulty of handling and increased production costs; Therefore, how to clean pulp raw materials has always been a major problem in paper production. 3. Contents of the invention [0003] In view of the above situatio...

Claims

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Application Information

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IPC IPC(8): D21B1/02
Inventor 刘洁
Owner FUJIAN QINGSHAN PAPER INDUSTRY CO LTD
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