Pulping system of papermaking production line

A production line and pulping technology, applied in papermaking, textile and papermaking, pulping of cellulose raw materials, etc., to achieve the effects of reducing transportation costs and production costs, reducing impurity backflow, and reducing slurry loss

Inactive Publication Date: 2018-10-16
SHANYING INT HLDG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Aiming at the problem that factors such as pulp cleanliness, pulp yield and pulp classification cannot be comprehensively controlled in the existing pulping process of papermaking, the present invention provides a pulping system of a papermaking p...

Method used

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  • Pulping system of papermaking production line
  • Pulping system of papermaking production line
  • Pulping system of papermaking production line

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0038] Such as figure 1 , figure 2 , image 3 As shown, this embodiment provides a papermaking production line pulping system, including a crushing part, a screening and purification part, and a pulping part; wherein, the crushing part includes a chain conveyor and a hydraulic pulper connected in sequence and a high-concentration desander; the screening and purification part includes a discharge tower, a pressure screen, a desander and a grading sieve connected in sequence, and a high-concentration desander in the crushing part is connected to the discharge tower; the dispersed The slurry part includes a multi-disk thickener, screw extruder, fast heater, heat disperser, pre-grinding tank, disc mill and slurry tower connected in sequence, and the grading screen in the screening and purification part is connected to the multi-disk thickener.

[0039] The system is divided into three parts to process and pulp the waste paper. The crushing part transports the waste paper to the...

Embodiment 2

[0045] This embodiment provides a papermaking production line pulping system, which is basically the same as Embodiment 1, except that in the screening and purification part, the structure of the screen drum body 1 of a pressure screen is as follows: Figure 4 As shown, the sieve drum body 1 is provided with a plurality of evenly spaced rectangular sieve slits 2 along the circumferential direction, and one or more spiral grooves 3 are set on the inner wall of the sieve drum body 1 from top to bottom along the circumferential direction, and the width of the sieve slits is 0.6mm; while the screen drum body 1 of the second-stage pressure screen, the third-stage pressure screen and the fourth-stage pressure screen all have circular screen holes, and the diameter of the screen hole on the screen drum body 1 of the second-stage pressure screen is 2.6mm The diameter of the sieve hole on the screen drum body 1 of the three-stage pressure screen is 2.5mm, and the diameter of the screen ...

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Abstract

The invention discloses a pulping system of a papermaking production line and belongs to the technical field of paper making. The pulping system comprises a crushing part, a screening and purifying part and a dispersing and pulping part, wherein the crushing part comprises a chain scraper conveyor, a hydropulper and a primary-section high-concentration desander which are sequentially connected; the screening and purifying part comprises an unloading tower, a pressurized screen, a desander and a sizing screen which are sequentially connected, and the primary-section high-concentration desanderof the crushing part is connected with the unloading tower; and the dispersing and pulping part comprises a multiple-disc concentrator, a screw extruder, a rapid heater, a thermal dispersion machine,a pre-grinding tank, a disc grinder and a pulping tower which are sequentially connected, and the sizing screen of the screening and purifying part is connected with the multiple-disc concentrator. According to the system disclosed by the invention, a pulping process is refined in three parts, paper pulp is also better purified and sized on the premise that the pulp yield of paper pulp is guaranteed so as to obtain high-quality paper pulp, and production requirements of different papers are met.

Description

technical field [0001] The invention belongs to the technical field of papermaking, and more specifically relates to a pulping system of a papermaking production line. Background technique [0002] The papermaking device is the combined equipment for papermaking, which is mainly composed of wire, pressing and drying. There are two types of wire mesh, cylinder wire and fourdrinier wire, the press section is composed of press rolls and papermaking felt, and the drying section is composed of one or several drying cylinders. Some fourdrinier machines are also equipped with mechanical calenders to improve the smoothness and tightness of the paper. There are many types of papermaking devices, such as single-dryer paper machines for single-sided glossy paper, fourdrinier multi-dryer paper machines for general paper, tissue paper machines for typing paper and cigarette paper, and cardboard machines for cardboard, etc. . [0003] The modern papermaking process is generally divided...

Claims

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Application Information

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IPC IPC(8): D21B1/34D21D5/06D21D1/30D21C3/00
CPCD21B1/345D21C3/00D21D1/30D21D5/06
Inventor 李聪定孙后年张先荣裴献喜吴永金方江生周世春
Owner SHANYING INT HLDG CO LTD
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