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Preparation method of modified wood fiber bundle through microbial enzyme degradation

A technology of lignocellulosic and microbial enzymes, applied in the direction of using microbial/enzyme cellulose treatment, fiber raw material treatment, pretreatment with alkaline compounds, etc., can solve the problems of environmental degradation, shortened service life of lubricating oil, unfavorable environment Protection and other issues to achieve the effect of increasing flow, reducing exhaust emissions, and improving engine power

Active Publication Date: 2021-06-08
安徽新立滤清器有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved in the present invention: with reference to the Chinese Patent Publication No. CN105986510A, a high temperature resistant hydraulic oil filter element filter paper is proposed. By adding ceramic fiber cotton and melamine cyanurate, the strength and high temperature resistance of the filter paper can be improved, but organic Polymer materials can block micropores and are not environmentally friendly and degradable, which is not conducive to environmental protection. In addition, when the engine is working, a large amount of air will enter, and some of the water will stay inside the engine and combine with the lubricating oil to make it oxidize and shorten. During the service life of the lubricating oil, moisture will also combine with the internal surface of the engine to oxidize its surface. At the same time, the acid value of the lubricating oil gradually increases during use, which will cause acid corrosion to the engine and damage the oil itself. Therefore, the development of A filter material with high purification precision for tiny particles, large flow rate, water absorption and corrosion resistance is a problem that the industry needs to solve

Method used

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  • Preparation method of modified wood fiber bundle through microbial enzyme degradation
  • Preparation method of modified wood fiber bundle through microbial enzyme degradation
  • Preparation method of modified wood fiber bundle through microbial enzyme degradation

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Experimental program
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Effect test

Embodiment 1

[0020] A method for preparing modified wood fiber bundles by microbial enzyme degradation, comprising the following steps:

[0021] Step A1, choose ylang ylang wood, oleander wood, long fruit kapok wood, peel off the epidermis, remove insect eyes and black scars on the trunk, use a crusher to crush the plant raw materials into granules with a diameter of 8mm, and use them in the natural environment. Dry under conditions to obtain wood particles, in which the material requirements of the plant raw materials: the compressive strength along the grain is 23MPa, the bending strength is 45MPa, the tensile bending elasticity is 7000MPa, the ray structure: single tube hole and short radial multiple tube hole, Uniform distribution, vessel molecular length and short wood fiber 4 / mm 2 , average wall thickness;

[0022] Step A2, add 9.8mL deionized water into the reaction kettle as the bottom liquid, raise the temperature to 50°C, add 2.4g polyvinylpyrrolidone and 13.5mL1mol / L nickel nit...

Embodiment 2

[0025] A method for preparing modified wood fiber bundles by microbial enzyme degradation, comprising the following steps:

[0026] In step A1, choose long fruit kapok wood, light Evodia rutaecarpa wood, and Rutaceae wood, peel off the epidermis, remove insect eyes and black scars on the trunk, and use a crusher to crush the plant raw materials into granular shapes with a diameter of 9.5 mm. Drying in the sun to obtain wood particles, the material requirements of the plant raw materials: the compressive strength along the grain is 25MPa, the flexural strength is 50MPa, the tensile bending elasticity is 7380MPa, the ray structure: single tube hole and short radial multiple tube hole, distribution Uniform, vessel molecular length and short wood fiber 5 / mm 2 , average wall thickness;

[0027] Step A2, add 10.3mL of deionized water into the reactor as the bottom solution, raise the temperature to 53°C, add 2.8g of polyvinylpyrrolidone and 13.8mL of calcium chloride solution, stir...

Embodiment 3

[0030] A method for preparing modified wood fiber bundles by microbial enzyme degradation, comprising the following steps:

[0031] In step A1, choose light Evodia rutaecarpa wood, Rutaceae wood, and the three remaining undergrowths, peel off the epidermis, remove insect eyes and black scars on the trunk, use a crusher to crush the plant raw materials into granular shapes with a diameter of 9.5mm, and store them in the natural environment. Dry under the same conditions to obtain wood particles, in which the compressive strength along the grain is 28MPa, the bending strength is 52MPa, and the tensile bending elasticity is 7550MPa. Wood fiber 6 pieces / mm 2 , average wall thickness;

[0032]Step A2, add 12.4mL of deionized water into the reactor as the bottom liquid, raise the temperature to 60°C, add 3.2g of polyvinylpyrrolidone and 14.8mL of calcium chloride solution, stir well, and slowly drop into it 1.8mol / L hydrogen Sodium oxide solution until pH = 9.5, continue to stir f...

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Abstract

The invention discloses a preparation method of a modified wood fiber bundle through microbial enzyme degradation, and the method comprises the following steps: 1, stripping the skin of a plant raw material, removing black scars, and performing granulating by a crusher to obtain wood particles; 2, preparing nanocrystals through high-temperature calcination; 3, enabling the wood particles to be subjected to enzymolysis and nanocrystalline loading, and obtaining wood fiber bundles. According to the invention, biological enzyme is used for degrading plant fibers to generate micromolecular porous wood fiber bundles, and the micromolecular porous wood fiber bundles are used as a filter element material, so that the purification performance of wood fibers on polar substances such as colloid and polycyclic aromatic hydrocarbon is improved, the high-temperature lubricating performance is improved, carbon deposition and oil sludge of an engine are removed, the power of the engine is improved, exhaust emission is reduced, and oil consumption is reduced; meanwhile, the coarse pore channels of the wood fiber bundles facilitate loading of nanocrystals, the nanocrystals serve as an alkaline water absorbing material, acidic substances in lubricating oil can be neutralized, acid corrosion to an engine is reduced, water vapor in engine equipment is reduced, and oxidation to the lubricating oil and the engine is avoided.

Description

technical field [0001] The invention belongs to the technical field of filter core material preparation, and relates to a method for preparing wood fiber bundles modified by microbial enzyme degradation. Background technique [0002] The role of the traditional lubricating oil filter element is to filter out sundries, colloids and water in the lubricating oil, and deliver clean oil to each lubricating part, in order to reduce the frictional resistance between the relative moving parts in the engine and reduce the The wear of the lubricating oil is continuously transported to the friction surface of each moving part to form a lubricating oil film. The lubricating oil itself contains a certain amount of colloid, impurities, water and additives. The entry of impurities in the air and the generation of oxides in the lubricating oil will gradually increase the impurities in the lubricating oil. If the lubricating oil directly enters the lubricating oil circuit without being filt...

Claims

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Application Information

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IPC IPC(8): D21B1/06D21C1/06D21C5/00
CPCD21B1/06D21C1/06D21C5/005
Inventor 吴立新魏巧华吕益铭
Owner 安徽新立滤清器有限公司
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