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Method for preparing primary-color bio-mechanical pulp by treating wheat straw through hot steam and biological enzyme and fully utilizing byproducts

A technology of thermal steam and mechanical pulp, which is applied in the direction of using microorganism/enzyme cellulose treatment, water/steam pretreatment, pulp by-product recovery, etc. To save energy consumption for refining, solve the shortage of raw materials, and achieve economic and social benefits

Active Publication Date: 2021-05-28
QILU UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the problem of by-products produced in the pulping process has not been well resolved, which is not conducive to the comprehensive high-value utilization of agricultural straw

Method used

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  • Method for preparing primary-color bio-mechanical pulp by treating wheat straw through hot steam and biological enzyme and fully utilizing byproducts
  • Method for preparing primary-color bio-mechanical pulp by treating wheat straw through hot steam and biological enzyme and fully utilizing byproducts
  • Method for preparing primary-color bio-mechanical pulp by treating wheat straw through hot steam and biological enzyme and fully utilizing byproducts

Examples

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preparation example Construction

[0023] In a first typical embodiment of the present invention, a method for preparing biomechanical pulp and by-products fully utilized by hot steam treatment in conjunction with biological enzyme treatment is provided, and the method includes the following steps:

[0024] (1) Use the waste wheat straw after obtaining wheat grain as raw material, mix it with the wheat straw according to the liquid ratio of 1:3-1:6, add a small amount of KOH, so that the pH value of the water content of the wheat straw is 10-14, and then pass it into the hot water Water steam, the hot water steam treatment process lasts for 15-60 minutes, and the steam temperature is 100-120°C; collect lye wastewater, and collect rotten leaves and straw that cannot be used for processing;

[0025] (2) After the hot steam treatment is finished, the wheat straw is extruded and divided; the waste water in the extruded section is collected;

[0026] (3) Act on the divided wheat straw and the alkaline biological com...

Embodiment 1

[0046] Example 1: A preparation method for fully utilizing biomechanical pulp and by-products through hot steam treatment and biological enzyme treatment. This example prepares wheatgrass-colored biomechanical pulp and simultaneously prepares biomass compound fertilizer.

[0047] (1) Cut the air-dried wheat straw after physical selection and dedusting into 5cm-long spare raw materials, put it into the wheat straw processor or reaction kettle, mix the wheat straw according to the liquid ratio of 1:5 (g / mL), and add A small amount of alkali KOH, adjust the pH value of the water content of the wheat straw at 14; collect the rotten leaves and straw that cannot be used for processing;

[0048] (2) Feed hot water steam at a temperature of 110°C for 20 minutes to dissolve a small amount of hemicellulose, lignin, pectin and other substances in the wheat straw, soften the wheat straw with hot saturated water, and soften the water content of the wheat straw at the end of the treatment T...

Embodiment 2

[0056] Example 2: A preparation method for fully utilizing biomechanical pulp and by-products through hot steam treatment and biological enzyme treatment. This example prepares wheatgrass color biomechanical pulp and simultaneously prepares biomass compound fertilizer.

[0057] (1) Cut the air-dried wheat straw after physical selection and dedusting into 4cm-long spare raw materials, put it into the wheat straw processor or reaction kettle, mix the wheat straw according to the liquid ratio of 1:4 (g / mL), and add A small amount of alkali KOH is used to adjust the pH value of the wheat straw to 14; the rotten leaves and straws that cannot be processed and used are collected.

[0058] (2) Feed hot water steam at a temperature of 100°C for 30 minutes to dissolve a small amount of hemicellulose, lignin, pectin and other substances in the wheat straw, soften the wheat straw with hot saturated water, and soften the water content of the wheat straw at the end of the treatment At a pH ...

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Abstract

The invention relates to a method for preparing primary-color bio-mechanical pulp and byproducts by treating wheat straw through hot steam and a biological enzyme, and belongs to the technical field of papermaking technologies and comprehensive utilization of wastes. The invention provides a method for preparing the high-strength primary-color biological mechanical pulp by using the whole wheat straw as a raw material and treating the whole wheat straw by adopting hot water and alkaline biological enzyme, so that the requirements of producing primary-color cardboard paper and paper-based materials are met, byproducts are recycled to prepare a biomass compound fertilizer, solid wastes are turned into wealth, and high-valued full utilization of the wheat straw is realized. The preparation method is simple, green, clean and efficient, and has good practical application value and wide application prospect.

Description

technical field [0001] The invention belongs to the technical field of papermaking technology and waste comprehensive utilization, and specifically relates to a method for preparing primary color biomechanical pulp and by-products by treating wheat straw with hot steam and biological enzymes. Background technique [0002] The information disclosed in this background section is only intended to increase the understanding of the general background of the present invention, and is not necessarily taken as an acknowledgment or any form of suggestion that the information constitutes the prior art already known to those skilled in the art. [0003] In traditional pulping and papermaking, wheat straw, as a representative of grasses, is an important raw material for papermaking, but because wheat straw leaves and leaf sheaths are not easy to beat, so usually only wheat straw straw is kept in the material preparation process, while wheat straw leaves and wheat straw sheaths are not I...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21C5/00D21C11/10D21H11/12D21B1/02C05F11/00C05G5/20
CPCD21C5/005D21C11/10D21H11/12D21B1/021D21B1/02C05F11/00C05G5/20Y02P70/10C05F7/02D21D1/30D21C5/00D21C3/02D21C1/06C12P1/00C12P2201/00D21C1/02D21C11/0007D21D1/306
Inventor 田中建吉兴香王东兴韩文佳马浩邵学军
Owner QILU UNIV OF TECH
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