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Method for preparing paper pulp with raw biomass material and co-producing biochar

A biomass raw material and pulp technology, applied in pulp bleaching, fiber raw material processing, carbon preparation/purification, etc., can solve problems such as inapplicability, and achieve the effects of low kappa value, shortened cooking time, and simple process route

Active Publication Date: 2013-04-10
JINAN SHENGQUAN GROUP SHARE HLDG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, the process is not suitable for the preparation of pulp

Method used

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  • Method for preparing paper pulp with raw biomass material and co-producing biochar

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Embodiment 1

[0050] In this embodiment, the reeds are first crushed to a particle size of 2 cm to 10 cm. The present embodiment extracts the technology of pulp from described reed, comprises the steps:

[0051] (1) After the reeds were crushed and pretreated, the treated reeds were cooked with an organic acid solution with a total acid concentration of 65% formic acid and acetic acid. The mass ratio of acetic acid to formic acid in the organic acid solution in this embodiment was 19: 1, and before adding the reed raw material, add 2% hydrogen peroxide (H 2 o 2 ) as a catalyst, control the reaction temperature at 110°C, react for 70 minutes, the solid-liquid mass ratio is 1:6, and conduct the first solid-liquid separation of the obtained reaction liquid;

[0052] (2) Adding the solid obtained by the above separation to an organic acid solution with a total acid concentration of 60% formic acid and acetic acid for acid washing, wherein the above-mentioned total acid concentration is 60% in...

Embodiment 2

[0063] In this embodiment, firstly, the wheat straw is crushed to a particle size of 2 cm to 10 cm. The technology that present embodiment extracts pulp from described wheat straw, comprises the steps:

[0064] (1) After the wheat straw is pulverized and pretreated, the treated wheat straw is cooked using an organic acid solution with a total acid concentration of 70% formic acid and acetic acid. The mass of acetic acid and formic acid in the organic acid solution of this embodiment The ratio is 1:1, and before adding the wheat straw raw material, add 4% hydrogen peroxide (H 2 o 2 ) as a catalyst, control the reaction temperature at 125°C, react for 80 minutes, and have a solid-liquid mass ratio of 1:5, and conduct the first solid-liquid separation of the obtained reaction liquid;

[0065] (2) adding the solid obtained from the above separation to an organic acid solution with a total acid concentration of 70% formic acid and acetic acid for acid washing, wherein the organic...

Embodiment 3

[0076] In this embodiment, the rice straw is first crushed to a particle size of 2 cm to 10 cm. The present embodiment extracts the technology of pulp from described straw, comprises the steps:

[0077] (1) After the rice straw is pretreated, use an organic acid solution with a total acid concentration of 60% formic acid and acetic acid to cook the treated rice straw. The mass ratio of acetic acid to formic acid in the organic acid solution of this embodiment is 12: 1, and add before adding the straw raw material and account for 1% hydrogen peroxide (H 2 o 2 ) as a catalyst, control the reaction temperature at 105°C, react for 90 minutes, the solid-liquid mass ratio is 1:8, and conduct the first solid-liquid separation of the obtained reaction liquid;

[0078](2) The above-mentioned separated solids are added to an organic acid solution with a total acid concentration of 95% formic acid and acetic acid for acid washing, wherein the above-mentioned organic acid solution with ...

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Abstract

The invention relates to a preparation method of paper pulp, in particular to a method for preparing the paper pulp with a raw biomass material by utilizing organic acid. The method comprises the step of preparing the paper pulp by cooking the raw biomass material with formic acid and acetic acid mixed organic acid under the catalysis of hydrogen peroxide. According to the method for preparing the paper pulp, the productivity of the paper pulp is high; the cooking time is short; a bleaching technology is simple; and as hydrogen peroxide is added in a pulping process, lignin is removed to the greatest extent, a carbohydrate is prevented from being damaged, only simple chlorine-free bleaching is required in the subsequent bleaching technology, and the high-whiteness pulp can be obtained. The obtained paper pulp is good in drainability and property; the kappa number is low; biochar can be prepared with black liquor generated in a paper pulp production process; the effects of pollutants discharged in a papermaking process on an environment are reduced; and an economic benefit and an environmental benefit of an enterprise are improved.

Description

technical field [0001] The invention relates to a paper pulp preparation process, specifically a process for preparing paper pulp by cooking biomass raw materials with an organic acid composed of formic acid and acetic acid under the catalysis of hydrogen peroxide, and at the same time using papermaking black liquor to produce bio carbon method. Background technique [0002] With the deepening of human understanding of environmental pollution and resource crisis, the renewable and degradable properties of natural polymers have attracted increasing attention. The recycling of waste and the utilization of renewable resources are major issues in contemporary economic and social development, and are also new requirements for contemporary science and technology. [0003] Cellulosic biomass exists in the form of plants, and its main components are cellulose, hemicellulose and lignin, of which cellulose accounts for about 40%, hemicellulose accounts for about 25%, and lignin accou...

Claims

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Application Information

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IPC IPC(8): D21C3/20D21C9/16D21C9/00C01B31/02C01B32/05
Inventor 唐一林江成真刘洁高绍丰孙智华
Owner JINAN SHENGQUAN GROUP SHARE HLDG
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