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Straw board for vegetation slope protection and production method thereof

A production method and technology for straw boards, which are applied in the field of straw boards, can solve the problems of long construction period, high cost, waste of biomass resources, etc., and achieve the effects of good environmental protection and good ecological benefits.

Inactive Publication Date: 2021-04-06
北京航天恒丰科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are disadvantages of high cost and long construction period
[0004] The annual output of herbaceous crop straws in the world is about 3.9 billion tons, of which about 500 million tons are grain-type crop straws such as wheat straw and corn stalks. These straws are usually stacked or burned by farmers, which not only wastes biomass resources, but also cause air pollution

Method used

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  • Straw board for vegetation slope protection and production method thereof
  • Straw board for vegetation slope protection and production method thereof
  • Straw board for vegetation slope protection and production method thereof

Examples

Experimental program
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Effect test

preparation example Construction

[0036] In a specific preparation example, the crushed straw is soaked for 24-72 hours and grinded, and then enters the drying process; by soaking the crushed straw in clear water, the cellulose in the straw fiber can be mixed with water The molecules are fully infiltrated, and depending on the air and the microorganisms carried by the straw itself, the natural fiber dissociation treatment can be performed on the straw at room temperature and in a humid environment, thereby removing a small amount of hemicellulose that affects the mechanical strength of the biomass sheet. , and will dissolve a small amount of lignin, which will greatly reduce the strength and life of the board, and can also soften the intercellular layer of the straw cells. The soaked straw fragments are mechanically grinded by friction and tearing through the mechanical rotation friction of the grinder, so that the soft fibers can be better separated and the active hydroxyl groups at the end of the cellulose ar...

preparation example 1

[0044] 1) Crushing the corn stalks, wherein the corn stalks are the current year's stalks. The crushed straw is screened, and the straw fragments between 6-25 mesh screens are selected; the alkalized straw pulp is transported by a screw conveyor to an air-flow agitation dryer for drying. The straw fragments were dried in an airflow agitation dryer to make the water content reach 16%; and then the dried straw fragments were subjected to ultrasonic treatment, the ultrasonic power was 100kW, the ultrasonic frequency was 30kHz, and the ultrasonic time was 30min.

[0045] 2) The dried straws were assembled, steamed and hot-pressed, wherein the pressure was 2 MPa, the hot-pressing temperature was 180° C., and the hot-pressing time was 280 seconds to form a 9 cm straw board.

[0046] The performance test of the straw board 1 shows that the density of the straw board is 0.6g / cm 3 , Shore hardness is 61A; water content is 10.4%.

[0047] The straw board 1 is perforated according to t...

preparation example 2

[0049] 1) Crush the sorghum stalks, sieve the crushed stalks, and select straw fragments between 6-25 mesh screens; the crushed straws must be soaked for 72 hours and grinded; after the grinded The straw pulp is transported to the airflow agitation dryer by the screw conveyor for drying. Dry the straw fragments in an airflow agitation dryer to make the moisture content reach 16%.

[0050] 2) The dried straws are assembled, steamed and hot-pressed, wherein the pressure is 2 MPa, the hot-pressing temperature is 160° C., and the hot-pressing time is 360 seconds to form a 5 cm straw board.

[0051] The performance test of the second straw board shows that the density of the straw board is 0.78g / cm 3 , Shore hardness is 52A; moisture content is 15.5%.

[0052] The second straw board is punched according to the standard that the diameter of the through hole is 30 cm and the hole spacing is 20 cm to form the second straw board with through holes.

[0053] A groove is arranged betw...

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Abstract

The invention provides a straw board for vegetation slope protection and a production method thereof, and relates to the technical field of ecological restoration. The method comprises the following steps of selecting a screen with 6-25 meshes as a standard, screening crushed straw fragments, soaking the straw fragments, and drying to control the water content of the straw fragments to be 10 to 18 percent; assembling the dried straws, and carrying out steam spraying and hot pressing at the hot-pressing temperature of 160 to 220 DEG C for 220 to 360 seconds so as to form a straw board; and punching the straw board to form the straw board with through holes. The straw board for the vegetation slope protection and the production method thereof provided by the invention have the characteristics of environmental protection, simplicity in construction and good ecological effect of slope protection.

Description

technical field [0001] The invention relates to the technical field of ecological restoration, in particular to a straw board used for vegetation slope protection and a production method thereof. Background technique [0002] China's ecological environment is increasingly fragile. According to statistics, due to wind and sand activities, secondary salinization, and pasture overload and overgrazing, the soil quality of pastures is loose and landslides occur frequently, which not only increases the sediment concentration of rivers, And because livestock manure directly enters the river, it not only affects the environmental development of the pasture, but also threatens the ecological balance of the water environment around the pasture. [0003] Vegetation slope protection is the preferred ecological slope protection technology. The current vegetation slope protection technologies include artificial grass, ecological bag slope protection and grid slope protection, etc.; when a...

Claims

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Application Information

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IPC IPC(8): B27N3/02B27N3/10B27N1/00B27M3/00E02D17/20
CPCB27M3/00B27N1/00B27N3/02B27N3/10E02D17/20
Inventor 刘海明李硕姜秀娟吕中文程淑琴杜蓉蓉
Owner 北京航天恒丰科技股份有限公司
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