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Ultrasonic-assisted bio-enzyme ligin removing method and device thereof

An ultrasonic, biological enzyme technology, applied in the direction of using microorganism/enzyme cellulose treatment, natural cellulose pulp/paper, non-woody plant/crop pulp, etc., can solve the problem of direct biological treatment time, cellulose and hemifiber In order to improve the speed, increase the penetration speed and reduce the production cost

Active Publication Date: 2016-11-09
福建祥业实业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The Chinese invention patent with the application number 200810020226.2 discloses a combined lignocellulose pretreatment method and its system, but this method is still a combination of chemical pretreatment methods, which require the use of acid and alkali in the pretreatment process, and there is a large environment Pollution problem increases the difficulty of follow-up treatment
The currently commonly used biological pretreatment method has the advantages of mild action conditions, strong specificity, environmental protection and low cost, but there are also problems such as long treatment time of direct biological method, serious loss of cellulose and hemicellulose, and low enzyme activity. And other issues

Method used

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  • Ultrasonic-assisted bio-enzyme ligin removing method and device thereof
  • Ultrasonic-assisted bio-enzyme ligin removing method and device thereof
  • Ultrasonic-assisted bio-enzyme ligin removing method and device thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] An ultrasonic-assisted bio-enzyme de-lignification method, the fiber raw material used is bamboo willow, the delignification device ultrasonic pulper used, and the bio-enzyme delignification auxiliary agent used are composed of the following components in parts by weight :

[0035] Titanium dioxide: 10%,

[0036] Laccase: 40%,

[0037] Xylanase: 10%,

[0038] Hemicellulase: 5%,

[0039] Thiourea Dioxide: 20%,

[0040] Vanillin: 1%,

[0041] Eugenol: 0.5%,

[0042] Tween 80: 10%,

[0043] The balance is excipient light calcium carbonate; wherein said laccase activity unit is 60,000 u / g,

[0044] Xylanase 100,000 u / g, hemicellulase 100,000 u / g.

[0045] The specific operation steps are:

[0046] (1) 2 tons of bamboo willows with a water content of 15wt% are conveyed by belt into a slicer, crushing and dust collector for material cutting, impurity removal, and dust removal, soaked in water for 2 hours, and ground into filaments with a heat grinder;

[0047] (2) In ...

Embodiment 2

[0052] An ultrasonic-assisted bio-enzyme de-lignification method, the fiber raw material used is reed, the delignification device ultrasonic pulper used, and the bio-enzyme delignification auxiliary agent used are composed of the following components in parts by weight:

[0053] Titanium dioxide: 15%,

[0054] Laccase: 30%,

[0055] Xylanase: 15%,

[0056] Hemicellulase: 10%,

[0057] Thiourea Dioxide: 10%,

[0058] Vanillin: 3%,

[0059] Eugenol: 1%,

[0060] Tween 80: 1%,

[0061] The balance is magnesium sulfate as an excipient; wherein the activity of laccase is 60,000 u / g, xylanase is 100,000 u / g, and hemicellulase is 100,000 u / g.

[0062] The specific operation steps are:

[0063] (1) 2 tons of reeds with a water content of 15wt% are transported by belt into a grass cutting, pulverizing and dedusting machine for material cutting, impurity removal and dust removal, soaked in water for 3 hours, and ground into filaments with a heat grinder;

[0064] (2) In the ultr...

Embodiment 3

[0069] An ultrasonic-assisted bio-enzyme de-lignification method, the fiber raw material used is bamboo, the delignification device ultrasonic pulper used, and the bio-enzyme delignification auxiliary agent used are composed of the following components in parts by weight:

[0070] Titanium dioxide: 12%,

[0071] Laccase: 35%,

[0072] Xylanase: 12%,

[0073] Hemicellulase: 8%,

[0074] Thiourea Dioxide: 15%,

[0075] Vanillin: 2%,

[0076] Eugenol: 0.8%,

[0077] Tween 80: 6%,

[0078] The balance is the excipient copper sulfate; wherein the laccase activity is 60,000 u / g

[0079] Xylanase 100,000 u / g, hemicellulase 100,000 u / g.

[0080] The specific operation steps are:

[0081] (1) 2 tons of bamboos with a water content of 15wt% are conveyed by belt into a grass-cutting, pulverizing and dust-removing machine for material cutting, impurity removal, and dust removal, soaked in water for 2.5 hours, and ground into filaments with a heat grinder;

[0082] (2) In the ultr...

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Abstract

The invention relates to the technical field of biodegradation, in particular to an ultrasonic-assisted bio-enzyme ligin removing method and a device thereof. The method comprises the steps that wood fiber raw materials such as reed or bamboo willows are purified, then soaked with water and ground into filamentous fibers; water and a bio-enzyme ligin removing auxiliary are mixed evenly, and the filamentous fibers are added; air is introduced, the temperature is raised, an ultrasonic generator is started, and a constant-temperature and constant-pressure reaction is carried out; hydrogen peroxide is added into the materials for a reaction, and the reaction is terminated when the whiteness of pulp is higher than or equal to 75% ISO. The device used in the method comprises a bucket, a feeding port, a safety valve, a motor, a coupler, an air inlet, a water inlet, a pulp outlet and a supporting part. A mechanical rubbing and stirring device is arranged in the bucket, and the ultrasonic generator and an ultrasonic transducer are further arranged outside the bucket and are connected through a connecting device. According to the ligin removing method and the device, the treatment cycle is short, and the treatment capability and efficiency are high.

Description

technical field [0001] The invention relates to the technical field of biodegradation, in particular to an ultrasonic-assisted bio-enzyme de-lignification method and a device thereof. Background technique [0002] Lignocellulosic biomass exists in large quantities in nature, and is the most abundant and cheapest renewable resource that meets the requirements of sustainable development on the earth. However, the efficient and economical conversion of lignocellulosic raw materials has always been a difficult problem that scholars at home and abroad are committed to solving. This is mainly due to the extremely complex structure of lignocellulosic raw materials such as straw and bamboo willow. Lignin and hemicellulose form a firm binding layer and wrap around the outside of the cellulose. The degradation of any component is bound to be affected by other components. restrict. Among them, hemicellulose is relatively easy to hydrolyze and can be degraded into fermentable sugar su...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21C5/00D21B1/30D21H11/12D21H11/00
CPCD21B1/303D21C5/005D21H11/00D21H11/12
Inventor 李树泉
Owner 福建祥业实业有限公司
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