Biological ultrasonic pulping method for high-strength mechanical pulp

A technology of ultrasonic and mechanical pulping, applied in the field of paper pulping, to achieve novel and unique methods, good effect and the effect of improving pulp quality

Active Publication Date: 2017-02-15
四川熊猫新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the above situation, in order to overcome the defects of the prior art, the purpose of the present invention is to provide a pulping method of bioultrasonic high-strength

Method used

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  • Biological ultrasonic pulping method for high-strength mechanical pulp

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Depend on figure 1 Shown, the present invention in concrete implementation, comprises the following steps:

[0023] (1), preparation of compound bacteria liquid:

[0024] Compound white rot fungus, Rheinrichia tangshanensis, Acinetobacter ruckerii and Pseudomonas fluorescens in a mass ratio of 2~3︰1~3︰1~2︰1~2, add water to make bacteria The group density is 6×10 7 more than one / ml compound bacteria solution;

[0025] (2) Steaming raw materials: the raw materials are woody or herbaceous plants containing fibers, first cut the woody raw materials into wood chips with a length of 3-4cm, or cut the herbaceous plant raw materials into 4-5cm long, After washing with water for 2 to 3 times, it is sent to the steaming chamber, steamed with steam for 10 to 30 minutes to soften the raw materials, and then enters the helical spiral dehydrator for dehydration;

[0026] (3) One-stage extrusion defrosting: send the softened and dehydrated raw materials into a one-stage double-scr...

Embodiment 2

[0035] In the specific implementation of the present invention, the composite bacteria liquid is that white rot fungus, Rhinemeria tangshanensis, Acinetobacter ruckerii and Pseudomonas fluorescens are mixed in a mass ratio of 2.2~2.8︰1.5~2.5︰1.2 ~1.8︰1.2~1.5 compounded together, add water to make the colony density 6×10 7 more than one / ml compound bacteria solution;

[0036] The one-stage extruding solution is in mass percent: NaOH 1.2-1.8% and H 2 o 2 0.02~0.08% is made by adding water to 100%;

[0037] The mass ratio of the first-stage decomposed raw material to the composite bacterial solution is 1:7, the biodegradation temperature is kept at 36-38°C, and the time is 35-40 hours;

[0038] The two-stage extruding liquid is expressed in mass percent: NaOH 2.5-3.5%, H2 o 2 3.0~5.0%, Na 2 SiO 3 2~3.0% and DTPA 0.2~0.4% add water to 100%.

Embodiment 3

[0040] In the specific implementation of the present invention, the compound bacteria liquid is that white rot fungus, Rhinemeria tangshanensis, Acinetobacter ruckerii and Pseudomonas fluorescens are compounded in a mass ratio of 2.5: 2: 1.5: 1.5 together, add water to make a colony density of 6 x 10 7 more than one / ml compound bacteria solution;

[0041] The one-stage extruding and defibrating solution is in mass percent: NaOH 1.5% and H 2 o 2 Made by adding water to 0.06% to 100%;

[0042] The mass ratio of the raw material and the composite bacterial liquid after the first stage of decompression is 1:7, the biodegradation temperature is kept at 37°C, and the time is 36 to 38 hours;

[0043] Described two-stage extruding defibrate liquid is in mass percent: NaOH 3%, H 2 o 2 4%, Na 2 SiO 3 2.5% and DTPA0.3% are made by adding water to 100%.

[0044] The method of the invention adopts biological pulping, reduces environmental pollution from the source of pulping, an...

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Abstract

The invention relates to a biological ultrasonic pulping method for a high-strength mechanical pulp. The aims of improving the quality of a chemi-mechanical pulp, reducing the production cost and improving the production efficiency can be effectively achieved. The biological ultrasonic pulping method includes the steps that water is added into white rot fungi, rheinheimera tangshanensis, acinetobacter lwoffii and pseudomonas fluorescens to prepare composite bacterium liquid with the flora density larger than 6*10<7> per ml; a woody raw material is cut into wood chips with the length of 3 cm to 4 cm or a herbaceous plant raw material is cut to have the length of 4 cm to 5 cm, washing, steaming and dehydration are carried out, the obtained product is soaked in first-stage squeezing extrusion liquid for first-stage squeezing extrusion, and then the obtained product is placed into the composite bacterium liquid for biodegradation, bailed out, drained, sterilized with steam at the normal pressure, subjected to second-stage squeezing extrusion, ultrasonically reacted, washed, screened, filtered, squeezed and concentrated into a wet pulp. The method is novel, unique, scientific, easy to operate and good in effect, the quality of the chemi-mechanical pulp can be effectively improved, the production cost can be reduced, the production efficiency can be improved, and the biological ultrasonic pulping method saves energy and is environmentally friendly.

Description

technical field [0001] The invention relates to paper pulping, in particular to a pulping method of biological ultrasonic high-strength mechanical pulp. Background technique [0002] In papermaking, pulp is indispensable. The commonly used alkaline hydrogen peroxide mechanical pulp is a kind of chemical pulp made from hardwood as the main pulping raw material by extrusion, impregnation and pulping processes. mechanical pulp. Its pulping process is developed on the basis of the pulping process of bleached chemical thermomechanical pulp. It combines the advantages of the pulping process and production equipment of chemical thermomechanical pulp and bleached chemical thermomechanical pulp. The pulping process of "combining pulping and bleaching at the same time into one" has become the biggest feature of the alkaline hydrogen peroxide mechanical pulping process. It has the advantages of less investment in equipment, small floor space, compact process flow, low production ener...

Claims

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Application Information

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IPC IPC(8): D21B1/30D21C1/02D21C1/06D21C5/00
CPCD21B1/303D21C1/02D21C1/06D21C5/005
Inventor 刘洁贺文明
Owner 四川熊猫新材料科技有限公司
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