Improved APMP pulping method

A technology of pulping and refining, which is applied in the field of paper pulping, can solve the problems of increasing waste water treatment expenses, wasting medicine and heat, wasting energy, etc., and achieves the effects of energy reduction, energy saving, and reduction of reprocessing costs

Inactive Publication Date: 2008-12-10
李昊
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Moreover, the energy required for extrusion and decompression is also very large, which wastes a lot of energy, and the waste water containing a large amount of residual medicine and heat produced in the subsequent process is discharged, wasting a large amount of medicine and heat. At the same time, the discharge of waste water needs to be carried out The reprocessing of wastewater increases the cost of wastewater treatment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] Embodiment 1: This embodiment is a single-stage pretreatment APMP pulping method, and the specific steps are:

[0014] The first step of wood chip washing;

[0015] The second chemical reaction step;

[0016] The third step is to resolve the steps;

[0017] The fourth step of refining;

[0018] The fifth step of elimination step;

[0019] The sixth step is to screen and wash steps.

[0020] The above steps are the main steps of this embodiment, and the specific content of these steps is well-known, and the specific content of the steps will not be described in detail here. There are also several well-known auxiliary steps interspersed in the above steps, and will not be repeated here. Of course, these solutions are also within the protection scope of the present invention. As ordinary engineers and technicians in this technical field, the split or combined description of the above steps does not change the essence of the present invention, and should also fall within the pr...

Embodiment 2

[0021] Embodiment 2: This embodiment is a two-stage pretreatment APMP pulping method, and the specific steps are:

[0022] The first step of wood chip washing;

[0023] The second step, the first chemical reaction step;

[0024] The third step is to resolve the steps;

[0025] The fourth step, the second stage of chemical reaction step;

[0026] The fifth step of refining;

[0027] The sixth step is to eliminate hidden steps;

[0028] The seventh step is to screen and wash steps.

[0029] Similarly, the above steps are the main steps of this embodiment, and the specific content of these steps is well-known, and the specific content of the steps will not be described in detail here. There are also several well-known auxiliary steps interspersed in the above steps, and will not be repeated here. Of course, these solutions are also within the protection scope of the present invention. As ordinary engineers and technicians in this technical field, the split or combined description of ...

Embodiment 3

[0030] Embodiment 3: This embodiment is a single-stage pretreatment P-RC APMP pulping method, and the specific steps are:

[0031] The first step of wood chip washing;

[0032] The second step, the first chemical reaction step;

[0033] The third step is to resolve the steps;

[0034] The fourth step of refining;

[0035] The fifth step, the second stage of chemical reaction step;

[0036] The sixth step is to eliminate hidden steps;

[0037] The seventh step is to screen and wash steps.

[0038] Similarly, the above steps are the main steps of this embodiment, and the specific content of these steps is well-known, and the specific content of the steps will not be described in detail here. There are also several well-known auxiliary steps interspersed in the above steps, and will not be repeated here. Of course, these solutions are also within the protection scope of the present invention. As ordinary engineers and technicians in this technical field, the split or combined descrip...

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PUM

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Abstract

The invention discloses an improved APMP pulping method. As a chemical reaction step is carried out before a defibering step and is a contact reaction between a wood chip and liquid medicine in a wood chip reaction bin, the wood chip first has chemical reaction with the liquid medicine in the reaction bin before defibering, thus after the wood chip has chemical reaction with the liquid medicine, the binding force among fibers is remarkably weakened and the fiber length in a defibering process can be effectively protected, which is favorable for raising the strength of paper pulp. Meanwhile, energy needed in the defibering process is also remarkably reduced, thereby saving a great amount of energy.

Description

Technical field [0001] The invention relates to a paper-making pulping method, in particular to an APMP pulping method using paper-making pulping. Background technique [0002] APMP (Alkaline Peroxide Mechanical Pulp) Chinese translation is alkaline hydrogen peroxide mechanical pulp. It is a new energy-saving and environmentally friendly pulping technology launched in the 1980s. It has high yield, high whiteness, high strength and low pollution. With outstanding advantages such as low water consumption, low energy consumption, and low material consumption, it is known as the latest pulping technology in the 21st century and has attracted the attention of the world's pulp and paper industry. [0003] At present, APMP pulping methods all go through a special mechanical treatment process before the wood chips are refined, so that the chips are longitudinally arranged into filaments or even fluffy, that is, the process of squeezing and deflating, and then entering after squeezing and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21C3/02D21C3/24D21C11/04
Inventor 李昊
Owner 李昊
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