APMP novel pulping method

Abstract

The invention discloses a novel method for APMP pulping. The first chemical reaction step is conducted before steps of wood chip washing and fluffing, and the chemical reaction step means the contact reaction in a wood chip reaction bin between wood chips and a medical solution in the reaction bin; the chemical reaction step is conducted prior to the wood chip washing step, so the residual reaction in the chemical reaction step can be directly used as a solution for wood chip washing, thereby greatly saving mass resources; the chemical reaction step which is conducted prior to the fluffing step makes the wood chips react chemically with the medical solution in the reaction bin before fluffing, thereby the binding force among fibers is decreased greatly after the reaction between the wood chips and the medical solution, and lengths of fibers are protected effectively in the fluffing process. The method is favorable for improving the intensity of paper pulp as well as obviously reducing the energy required in the fluffing process, leading to greatly saved energy.

Description

technical field

[0001] The invention relates to a papermaking pulping method, in particular to an APMP pulping method using papermaking pulping. Background technique

[0002] APMP (Alkaline Peroxide Mechanical Pulp) is translated into Chinese as alkaline hydrogen peroxide mechanical pulp. It is an energy-saving and environment-friendly pulping technology introduced 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, the methods of APMP pulping are all before the wood chips are refined, and after washing, they go through a special mechanical treatment process, so that the chips are arranged in a row into silk clusters or even fluff, that is, the process of extrusion and decompress...

Examples

Embodiment 1

[0013] Embodiment one: present embodiment is the method for single stage pretreatment APMP pulping, and its specific steps are:

[0014] The first step chemical reaction step;

[0015] The second step wood chip washing step;

[0016] The third step is the unwinding step;

[0017] The fourth step is the refining step;

[0018] The fifth step is the step of eliminating potential;

[0019] The sixth step is the screening washing step.

[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 these steps will not be described in detail here. There are also several known auxiliary steps interspersed in the above steps, which 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 the technical field, the split or combined description of the above steps does not change the essence of the pr...

Embodiment 2

[0021] Embodiment two: present embodiment is two sections pretreatment APMP pulping method, and its concrete steps are:

[0022] The first step is the first chemical reaction step;

[0023] The second step wood chip washing step;

[0024] The third step is the unwinding step;

[0025] The fourth step is the second chemical reaction step;

[0026] The fifth step is the refining step;

[0027] The sixth step is the step of eliminating potential;

[0028] The seventh step is the screening washing step.

[0029] Similarly, the above steps are the main steps of this embodiment, and the specific content of these steps is known, and the specific content of these steps will not be described in detail here. There are also several known auxiliary steps interspersed in the above steps, which 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 the technical field, the split or c...

Embodiment 3

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

[0031] The first step is the first chemical reaction step;

[0032] The second step wood chip washing step;

[0033] The third step is the unwinding step;

[0034] The fourth step is the refining step;

[0035] The fifth step is the second chemical reaction step;

[0036] The sixth step is the step of eliminating potential;

[0037] The seventh step is the screening washing step.

[0038] Similarly, the above steps are the main steps of this embodiment, and the specific content of these steps is known, and the specific content of these steps will not be described in detail here. There are also several known auxiliary steps interspersed in the above steps, which 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 the technical field, t...

technical field

[0001] The invention relates to a papermaking pulping method, in particular to an APMP pulping method using papermaking pulping. Background technique

[0002] APMP (Alkaline Peroxide Mechanical Pulp) is translated into Chinese as alkaline hydrogen peroxide mechanical pulp. It is an energy-saving and environment-friendly pulping technology introduced 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, the methods of APMP pulping are all before the wood chips are refined, and after washing, they go through a special mechanical treatment process, so that the chips are arranged in a row into silk clusters or even fluff, that is, the process of extrusion and decompress...

Examples

Embodiment 1

[0013] Embodiment one: present embodiment is the method for single stage pretreatment APMP pulping, and its specific steps are:

[0014] The first step chemical reaction step;

[0015] The second step wood chip washing step;

[0016] The third step is the unwinding step;

[0017] The fourth step is the refining step;

[0018] The fifth step is the step of eliminating potential;

[0019] The sixth step is the screening washing step.

[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 these steps will not be described in detail here. There are also several known auxiliary steps interspersed in the above steps, which 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 the technical field, the split or combined description of the above steps does not change the essence of the pr...

Embodiment 2

[0021] Embodiment two: present embodiment is two sections pretreatment APMP pulping method, and its concrete steps are:

[0022] The first step is the first chemical reaction step;

[0023] The second step wood chip washing step;

[0024] The third step is the unwinding step;

[0025] The fourth step is the second chemical reaction step;

[0026] The fifth step is the refining step;

[0027] The sixth step is the step of eliminating potential;

[0028] The seventh step is the screening washing step.

[0029] Similarly, the above steps are the main steps of this embodiment, and the specific content of these steps is known, and the specific content of these steps will not be described in detail here. There are also several known auxiliary steps interspersed in the above steps, which 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 the technical field, the split or c...

Embodiment 3

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

[0031] The first step is the first chemical reaction step;

[0032] The second step wood chip washing step;

[0033] The third step is the unwinding step;

[0034] The fourth step is the refining step;

[0035] The fifth step is the second chemical reaction step;

[0036] The sixth step is the step of eliminating potential;

[0037] The seventh step is the screening washing step.

[0038] Similarly, the above steps are the main steps of this embodiment, and the specific content of these steps is known, and the specific content of these steps will not be described in detail here. There are also several known auxiliary steps interspersed in the above steps, which 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 the technical field, t...