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Pulping device, pulping system, paper pulp production equipment constituted by pulping system, and application

A technology of pulping and equipment, applied in the fields of pulping method, pulping with inorganic alkali, raw material pretreatment, etc.

Inactive Publication Date: 2018-05-22
北京华浩荣创科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The pulp production equipment provided by the invention can use wheat straw, straw, reed or wood chips as raw materials to obtain pulp with high quality and stable product performance; the equipment uses a partially closed structure to replace steam heating in terms of softening raw materials, which significantly saves heating costs At the same time, it solves the possible black liquor problem in the pulping process, which not only greatly reduces the cost but also ensures environmentally friendly production; in view of the difficulty in treating wastewater with a large amount of water in the pulping process, the invention sets up a clean water and alkaline water return system, which not only ensures Balance the supply and demand of water in the production process, and ensure that there is no waste water discharge in the production process; while ensuring a high pulp yield, simplify the equipment treatment process and reduce the energy consumption of pulping

Method used

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  • Pulping device, pulping system, paper pulp production equipment constituted by pulping system, and application
  • Pulping device, pulping system, paper pulp production equipment constituted by pulping system, and application
  • Pulping device, pulping system, paper pulp production equipment constituted by pulping system, and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0081] Embodiment 1 A kind of pulping device

[0082] A pulping device is composed of a transmission device and a pulp refining equipment, and the transmission device and the pulp refining equipment are all in the same closed system.

Embodiment 2

[0083] Embodiment 2 A pulping device

[0084] Such as figure 1 A pulping plant shown is composed of three continuous operating units in the same closed system, each operating unit is composed of a transmission device and a refining equipment. That is to say, the pulping device is composed of a first pulping unit, a second pulping unit and a third pulping unit, wherein the first pulping unit is composed of a helical screw conveying device and a refiner, and the second pulping unit consists of two The three-stage inclined screw conveying device and the second-stage refiner are composed of the three-stage pulping unit. in a closed system.

Embodiment 3

[0085] Embodiment 3 A kind of pulping process

[0086] The pulping device described in Example 2 was used for pulping.

[0087] One-stage pulping: place the raw material after fiber brooming in a first-stage inclined screw conveying device, add additives to the raw material, and add a dryness regulator at the same time, so that the dryness of the raw material reaches 50-70%, and the temperature in the transmission stage is 50 -90°C, transport the slurry to the first-stage refiner; the first-stage refiner kneads the slurry, and the refining temperature is 70-110°C to obtain a first-stage pulping slurry with a beating degree of 35-45°SR. Fiber wet weight 3-11g;

[0088] The mass ratio of the added amount of the auxiliary agent to the added amount of the dryness regulator is 1:1.5-2;

[0089]Two-stage pulping: the first-stage pulping slurry enters the second-stage oblique screw conveying device, and the dryness regulator is added to make the raw material dryness reach 30-50%, a...

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Abstract

The invention provides a pulping device, a pulping system constituted by the pulping device, paper pulp production equipment constituted by the pulping system, a method for producing paper pulp through the paper pulp production equipment and application, and relates to the technical field of straw pulping. The paper pulp producing equipment comprises the pulping system, an alkaline water backflowsystem and a clean water pipeline system, and the alkaline water backflow system and the clean water pipeline system are connected with the pulping system separately through pipelines. By the adoptionof the pulping system with a partially-sealed structure to replace steam heating, and through the arrangement of a clean water backflow system and the alkaline water backflow system, the problem thatblack liquor exists in the pulping process is solved while the heating cost is obviously saved, the resource utilization rate is effectively increased, and it is guaranteed that no wastewater and scrap materials are generated in the production process.

Description

Technical field: [0001] The invention relates to the technical field of straw pulping, in particular to a pulping device, a pulping system composed of the pulping system, pulp production equipment composed of the pulping system, and a pulp production method and application thereof. technical background: [0002] The annual output of crop straw and waste wood in my country is as high as 100 million tons, but the comprehensive utilization rate is less than 40%. With the increase of national environmental protection and the adjustment of rural energy structure, the utilization rate of straw and waste wood has been reduced and a large number of paper mills and rice straw chemical pulping plants have been closed, and the reuse rate of straw and waste wood has been greatly reduced. Now rural areas mostly use incineration to deal with these waste straws, which cause serious pollution to the natural environment. [0003] Therefore, how to effectively utilize straw, waste wood and o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21B1/06D21B1/02D21C3/02D21D1/02
CPCD21B1/06D21B1/02D21C3/02D21D1/02
Inventor 谢彪
Owner 北京华浩荣创科技有限公司
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