阅读说明：本技术 一种利用松树疫木制作纸浆的方法 (Method for making paper pulp by using pine tree epidemic wood ) 是由 孙学书 王永春 于 2021-02-22 设计创作，主要内容包括：本发明公开了一种利用松树疫木制作纸浆的方法,步骤如下:将松树疫木切割或者削成规则木片,以规则木片为物料原料；经高温高压蒸汽爆破,爆破温度为170-200℃,爆破压力为0.8-1.56Mpa,保压时间为8-12分钟；爆破后得到的物料进入纤维细化处理阶段,通过分丝研磨的专业设备,将植物长纤维分解成纸浆短纤维；再经过挤干或者烘干,将短纤维里的水分去除大部分得到纸浆。本发明利用高温高压爆破技术处理疫木,可以杀死疫木中的松材线虫卵,彻底杀灭虫卵,防治松材线虫病远距离传播,使得疫木可以全部回收处理,不排放任何废物；从而使得疫木回收处理后具备更高经济价值,既可以减少财政投入,又可以调动除治方积极性。(The invention discloses a method for making paper pulp by pine tree epidemic wood, which comprises the following steps of cutting or chipping the pine tree epidemic wood into regular wood chips, and taking the regular wood chips as material raw materials; performing high-temperature high-pressure steam explosion at the temperature of 170-200 ℃, the explosion pressure of 0.8-1.56MPa and the pressure maintaining time of 8-12 minutes; the material obtained after blasting enters a fiber refining treatment stage, and long plant fibers are decomposed into short pulp fibers through professional equipment for filament splitting and grinding; and squeezing or drying to remove most of water in the short fibers to obtain the paper pulp. The invention utilizes the high-temperature high-pressure blasting technology to treat the wood, thereby killing the pine wood nematode eggs in the wood, thoroughly killing the pine wood nematode eggs, preventing and controlling the long-distance spread of the pine wood nematode disease, leading the wood to be completely recycled and treated, and not discharging any waste; therefore, the method has higher economic value after the recovery treatment of the epidemic trees, can reduce the financial investment and can also mobilize the enthusiasm of a treatment party.)

1. A method for making paper pulp by pine tree epidemic wood is characterized by comprising the following steps: the method comprises the following steps:

cutting or chipping pine tree epidemic wood into regular wood chips, and taking the regular wood chips as a material raw material;

performing high-temperature high-pressure steam explosion at the temperature of 170-200 ℃, the explosion pressure of 0.8-1.56MPa, the pressure maintaining time of 8-12 minutes and the time for completing one beat of 13-17 minutes;

the material obtained after blasting enters a fiber refining treatment stage, and long plant fibers are decomposed into short pulp fibers through professional equipment for filament splitting and grinding;

and squeezing or drying to remove most of water in the short fibers to obtain the paper pulp.

2. The method of claim 1, wherein the method further comprises: in the step 2), the blasting temperature is 184 ℃, the blasting pressure is 1.1Mpa, the pressure maintaining time is 10 minutes, and the time for completing one beat is 15 minutes.

3. The method of claim 1, wherein the method further comprises: in the step 2), the blasting temperature is 170 ℃, the blasting pressure is 0.8Mpa, the pressure maintaining time is 10 minutes, and the time for completing one beat is 15 minutes.

4. The method of claim 1, wherein the method further comprises: in the step 2), the blasting temperature is 200 ℃, the blasting pressure is 1.56Mpa, the pressure maintaining time is 10 minutes, and the time for completing one beat is 15 minutes.

5. The method of claim 1, wherein the method further comprises: the high-temperature high-pressure steam blasting in the step 2) is to forcedly apply high pressure to the regular wood chips in a short time, release the high pressure in a very short time after the high-temperature steam rapidly permeates into the material raw materials in a high-temperature environment, and decompose the regular wood chips by utilizing the physical principle that the high-pressure steam rapidly expands to work.

6. The method of claim 5, wherein the method further comprises: and 2) blasting by adopting steam blasting reaction equipment, wherein the blasting speed of the steam blasting reaction equipment for instantaneously breaking the microstructure of the substance reaches 0.00875 second, and the instantaneous blasting power reaches 22 MW.

7. The method of claim 6, wherein the method further comprises: the time for completing one beat in the step 2) refers to the time required by the steam explosion reaction equipment to complete one work.

8. The method of claim 5, wherein the method further comprises: in the step 1), the pine tree epidemic wood is cut into regular wood chips with the thickness of 0.25-0.5cm and the length of 3-6 cm.

Technical Field

The invention belongs to the technical field of agricultural and forestry waste recycling, and particularly relates to a method for manufacturing paper pulp by using pine tree epidemic trees.

Background

Pine wood nematode disease is a key quarantine disease in China, so that a large number of pine trees die and pine forest resources are reduced. The pine epidemic wood spread infected with the pine wood nematode disease is an important way for causing the long-distance spread of the disease; in the comprehensive control scheme of the pine trees, the elimination of epidemic trees is an important means.

The existing method for removing the epidemic trees has three main problems: 1. the quantity of the infected trees is large, the total cost for removing the infected trees is high, and the availability is low; the main wood treatment directions are two at present: burning on the spot (no availability) on the mountain; the biomass particle fuel is prepared (the biomass particle fuel has utilizability, but the sale price of the biomass fuel is lower); 2. government financial pressure is high (for preventing pine wood nematodes, the pure financial investment is used for treating the infected trees, and the infected trees have little availability, belong to the pure investment behavior and cause pressure on local finance); 3. the elimination formula has low elimination cost for a single plant and low enthusiasm (the economic value is high and the available direction is not much after the epidemic trees are felled).

Meanwhile, along with the improvement of domestic corresponding environmental protection requirements in recent two years, foreign waste paper is forbidden to be imported, so that the domestic serious shortage of new paper pulp is caused, the domestic demand is huge, the existing paper pulp is seriously insufficient, and the price of the paper pulp is continuously increased due to market quotations at home and abroad.

Disclosure of Invention

In order to solve the defects and shortcomings in the prior art, the invention provides a method for treating the wood-blight by using a high-temperature high-pressure blasting technology, which can kill the pine wood nematode eggs in the wood-blight, thoroughly kill the pine wood nematode eggs, prevent and control the long-distance spread of the pine wood nematode disease, ensure that the wood-blight can be completely recycled and treated, and does not discharge any waste; therefore, the method has higher economic value after the recovery treatment of the epidemic trees, can reduce the financial investment, and can mobilize the initiative of a treating party to prepare the paper pulp by using the pine epidemic trees.

The technical scheme of the invention is as follows: a method for making paper pulp by pine tree epidemic wood comprises the following steps:

1) cutting or chipping pine tree epidemic wood into regular wood chips, and taking the regular wood chips as a material raw material;

2) performing high-temperature high-pressure steam explosion at the temperature of 170-200 ℃, the explosion pressure of 0.8-1.56MPa, the pressure maintaining time of 8-12 minutes and the time for completing one beat of 13-17 minutes;

3) the material obtained after blasting enters a fiber refining treatment stage, and long plant fibers are decomposed into short pulp fibers through professional equipment for filament splitting and grinding;

4) and squeezing or drying to remove most of water in the short fibers to obtain the paper pulp.

The invention utilizes the high-temperature high-pressure blasting technology to treat the wood, thereby killing the pine wood nematode eggs in the wood, thoroughly killing the pine wood nematode eggs, preventing and controlling the long-distance spread of the pine wood nematode disease, leading the wood to be completely recycled and treated, and not discharging any waste; therefore, the method has higher economic value after the recovery treatment of the epidemic trees, can reduce the financial investment and can also mobilize the enthusiasm of a treatment party.

Preferably, the blasting temperature in the step 2) is 184 ℃, the blasting pressure is 1.1Mpa, the pressure maintaining time is 10 minutes, and the time for completing one beat is 15 minutes.

Preferably, the blasting temperature in the step 2) is 170 ℃, the blasting pressure is 0.8Mpa, the pressure maintaining time is 10 minutes, and the time for completing one beat is 15 minutes.

Preferably, the blasting temperature in the step 2) is 200 ℃, the blasting pressure is 1.56Mpa, the pressure maintaining time is 10 minutes, and the time for completing one beat is 15 minutes.

Preferably, the high-temperature high-pressure steam blasting in the step 2) is to forcibly apply high pressure to the regular wood chips in a short time, release the high pressure in a very short time after the high-temperature steam rapidly permeates into the material raw material in a high-temperature environment, and decompose the regular wood chips by utilizing the physical principle that the high-pressure steam rapidly expands to work.

Preferably, in the step 2), a steam explosion reaction device is adopted for explosion, the explosion speed of the instant breaking substance microstructure of the steam explosion reaction device reaches 0.00875 second, and the instant explosion power reaches 22 MW.

Preferably, the time for completing one beat in the step 2) refers to the time required for completing one work of the steam explosion reaction equipment.

Preferably, in the step 1), the pine tree is cut into regular wood chips with the thickness of 0.25-0.5cm and the length of 3-6 cm.

The invention utilizes the high-temperature high-pressure blasting technology to treat the wood, thereby killing the pine wood nematode eggs in the wood, thoroughly killing the pine wood nematode eggs, preventing and controlling the long-distance spread of the pine wood nematode disease, leading the wood to be completely recycled and treated, and not discharging any waste; therefore, the method has higher economic value after the recovery treatment of the epidemic trees, can reduce the financial investment and can also mobilize the enthusiasm of a treatment party.

Drawings

FIG. 1 is a schematic flow chart of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the following drawings and examples, but the scope of the present invention is not limited thereto.

As shown in fig. 1, a method for making pulp by using pine tree epidemic wood comprises the following steps:

1) cutting or chipping pine tree epidemic wood into regular wood chips, and taking the regular wood chips as a material raw material;

2) performing high-temperature high-pressure steam explosion;

3) the material obtained after blasting enters a fiber refining treatment stage, and long plant fibers are decomposed into short pulp fibers through professional equipment for filament splitting and grinding;

4) and squeezing or drying to remove most of water in the short fibers to obtain the paper pulp.

The high-temperature high-pressure steam blasting in the step 2) is to forcedly apply high pressure to the regular wood chips in a short time, release the high pressure in a very short time after the high-temperature steam rapidly permeates into the material raw materials in a high-temperature environment, and decompose the regular wood chips by utilizing the physical principle that the high-pressure steam rapidly expands to work externally.

And 2) blasting by adopting steam blasting reaction equipment, wherein the blasting speed of the steam blasting reaction equipment for instantaneously breaking the microstructure of the substance reaches 0.00875 second, and the instantaneous blasting power reaches 22 MW.

The time for completing one beat in the step 2) refers to the time required for completing one work of the steam explosion reaction equipment.

In the step 1), the pine tree epidemic wood is cut into regular wood chips with the thickness of 0.25-0.5cm and the length of 3-6 cm.

Example 1

In the step 2), the blasting temperature is 184 ℃, the blasting pressure is 1.1Mpa, the pressure maintaining time is 10 minutes, and the time for completing one beat is 15 minutes.

Example 2

In the step 2), the blasting temperature is 170 ℃, the blasting pressure is 0.8Mpa, the pressure maintaining time is 10 minutes, and the time for completing one beat is 15 minutes.

Example 3

In the step 2), the blasting temperature is 200 ℃, the blasting pressure is 1.56Mpa, the pressure maintaining time is 10 minutes, and the time for completing one beat is 15 minutes.

The paper pulp prepared by the invention is made into paper and is subjected to ring crush test, and the test data is as follows:

unit = Newton

F01=93.53

F02=81.09

F03=74.08

F04=83.15

F05=79.03

F06=88.07

Maximum =93.533 Newton

Minimum =74.082 Newton

Mean =83.160 Newton

Standard deviation =15.345

Ring crush strength =547.107N/m

Ring pressure index =5.468N.m/g

Gram weight =100g/m²。

The invention utilizes the high-temperature high-pressure blasting technology to treat the wood, thereby killing the pine wood nematode eggs in the wood, thoroughly killing the pine wood nematode eggs, preventing and controlling the long-distance spread of the pine wood nematode disease, leading the wood to be completely recycled and treated, and not discharging any waste; therefore, the method has higher economic value after the recovery treatment of the epidemic trees, can reduce the financial investment and can also mobilize the enthusiasm of a treatment party.