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Method for separating whole components of straw and preparing degradable appliance

A technology of full components and straw, which is applied in the field of straw resource utilization, can solve the problems of full utilization of effective components of straw, underutilization of straw components, and unutilized straw, and achieves easy operation, strong practicability, and economical efficiency. Practical effect

Active Publication Date: 2020-02-07
山东金正新科农业发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Chinese patent application CN105856380A uses straw and fruit shell fiber to make degradable tableware and containers, and directly uses crushed straw without component separation. The cellulose, hemicellulose, and lignin components in the straw have not been utilized, and the production Bone glue, carrageenan and other additives are added to the utensils. This method is only extensive utilization of straw, and does not really make full use of the various components of straw.
Chinese patent application CN1541720A uses cereals, potatoes, and straw powders to make degradable medical injection devices. The straw components are not separated, and grains, potatoes, and other grains are used. The cost of raw materials is relatively high, and the later catalytic polymerization treatment is also relatively expensive High, straw components are not fully utilized, wasting straw resources
[0004] Although the above-mentioned existing technologies all use straw to prepare degradable appliances, there are certain deficiencies in either the cost is high, or the effective components of the straw are not fully utilized.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] (1) Send 1 ton of straw raw material to the grass washing equipment through the belt conveyor, and the washed material enters the cooking pot. At the same time, add 0.01% acetic acid of straw raw material weight and feed fresh steam, heat up to 50°C and keep it for 30 minutes for cooking .

[0026] (2) After the cooking is completed, all the materials are sprayed into the spray pot by the pot pump to cool down and store. The material in the spray pot is washed countercurrently by a screw squeezer, and the secondary components in the solid slag are separated as much as possible for the preparation of degradable appliances.

[0027] (3) The solid slag enters the hydrolysis kettle, adding 0.1% (0.1% of the straw raw material mass) sulfuric acid to hydrolyze the biological straw to prepare xylose, and the xylose hydrolyzate is purified, concentrated and crystallized to prepare refined xylose. The separated solid residue is used for the separation of lignin and cellulose. ...

Embodiment 2

[0037] (1) Send 1 ton of straw raw materials to the grass-washing equipment through a belt conveyor, and the washed materials enter the cooking pot, and at the same time add 0.02% formic acid by weight of the straw raw materials. And feed fresh steam, heat up to 100°C and keep warm for 120min for cooking.

[0038] (2) After the cooking is completed, all the materials are sprayed into the spray pot by the pot pump to cool down and store. The material in the spray pot is washed countercurrently by a screw squeezer, and the secondary components in the solid slag are separated as much as possible for the preparation of degradable appliances.

[0039] (3) The solid slag enters the hydrolysis kettle, adding a certain amount of 0.5% sulfuric acid to hydrolyze the biological straw to prepare xylose, and the xylose hydrolyzate is purified, concentrated and crystallized to prepare refined xylose. The separated solid residue is used for the separation of lignin and cellulose.

[0040] ...

Embodiment 3

[0049] (1) Send 1 ton of straw raw materials to the weeding equipment through the belt conveyor, and the washed materials enter the cooking pot, and add 1% acetic acid at the same time. And feed fresh steam, heat up to 110°C and keep it warm for 90 minutes for cooking.

[0050] (2) After the cooking is completed, all the materials are sprayed into the spray pot by the pot pump to cool down and store. The material in the spray pot is washed countercurrently by a screw squeezer, and the secondary components in the solid slag are separated as much as possible for the preparation of degradable appliances.

[0051] (3) The solid slag enters the hydrolysis kettle, adding a certain amount of 0.1% sulfuric acid to hydrolyze the biological straw to prepare xylose, and the xylose hydrolyzate is purified, concentrated and crystallized to prepare refined xylose. The separated solid residue is used for the separation of lignin and cellulose.

[0052] (4) The solid slag obtained in step (...

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PUM

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Abstract

The invention discloses a method for all-component separation of straw and preparation of a degradable appliance. The method comprises the following steps: cooking straw for hydrolyzation, and then carrying out preparation by using the obtained solid residue to obtain xylose, lignin and cellulose; concentrating a washing liquid for preparing a degradable appliance; carrying out filter pressing andseparation on the concentrated washing liquid, then adding a mildew inhibitor and an antioxidant, carrying out stirring, injecting the stirred mixture into a mold, sending the support mold into an infrared-ray dryer for drying, carrying out ironing; and carrying out infiltration or spray coating, so as to obtain the degradable appliance. The degradable device prepared by the method provided by the invention is green, natural and environmentally friendly, has no additive with toxic or side effects, belongs to food grade products, can be degraded rapidly after being abandoned, and can be completely degraded after 5-7 days.

Description

technical field [0001] The invention belongs to the field of straw resource utilization, and relates to a method for separating all components of straw and using remaining waste residues to prepare degradable appliances. Background technique [0002] Crop straw is a resource that has not been fully developed. The annual output of crop straw in my country reaches 800 million tons, which is a valuable resource for farmers' life and agricultural development. The main components of crop straw are cellulose, hemicellulose, lignin and remaining components (fat, protein, pectin and inorganic salts, etc.). In the existing straw utilization methods, cellulose, hemicellulose, and lignin components are all used, and there is no report on the separation and utilization of the remaining components. The remaining components include organic matter such as protein, starch, fat, pectin, pigment, and various inorganic salts, which can be used as organic fertilizer, feed, and fungus culture m...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08H7/00D21C5/00C13K13/00C08J7/04C08L97/02
CPCC08H6/00C08J7/0427C08J2397/02C13K13/002D21C5/00
Inventor 郑庆义兹留柱郝明奎韩宝征杨磊么传杰
Owner 山东金正新科农业发展有限公司