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Method for resource utilization of abandoned crop straws

A technology for recycling crop stalks, which is applied in the field of agricultural waste resource utilization, can solve problems such as damage to the farmland soil environment, waste of biological resources, and atmospheric environmental pollution, and achieve the effects of improving insect-proof performance, prolonging service life, and improving plasticity.

Active Publication Date: 2017-10-17
潞城市创蓝生物科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem mainly solved by the present invention is: aiming at the problem that the traditional straw is mostly burned or directly returned to the field, which not only causes waste of biological resources, damages the soil environment of the farmland, but also causes huge pollution and harm to the atmospheric environment, and provides a Method for resource utilization of waste crop straw

Method used

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  • Method for resource utilization of abandoned crop straws

Examples

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Effect test

example 1

[0025]Weigh 3 kg of sweet potato vines, wash them twice with clean water, spread the washed sweet potato vines evenly in the sun and expose them to the sun until the moisture content of the discarded crop stalks is 15%, collect the exposed sweet potato vines, and cut them into lengths of 3cm short stalks, and put the obtained short stalks into 8L of 3% sodium hydroxide solution with a mass fraction of 3%, at a speed of 300r / min, stir and mix for 2h, and filter to obtain an alkali leaching filter residue; pour the obtained alkali leaching filter residue into a container In the reactor with 6L of water, seal the reactor again, and turn on the heater of the reactor at a speed of 300r / min until the pressure inside the reactor reaches 1.6MPa. Valve, so that the material in the reaction kettle is injected into the receiving kettle; the bottom of the receiving kettle and the reaction kettle are connected by a pipeline except the valve; the material in the receiving kettle is naturally...

example 2

[0027] Weigh 4kg of corn stalks, wash them repeatedly with clean water for 3 times, spread the washed corn stalks evenly in the sun and expose them to the sun until the moisture content of the corn stalks is 18%, collect the exposed corn stalks, and cut them into 4cm lengths with a guillotine Short stalks, and put the obtained short stalks into 9L of 4% sodium hydroxide solution by mass fraction, stir and mix for 3 hours under the condition of rotating speed of 400r / min, filter to obtain alkali leaching filter residue; pour the obtained alkali leaching filter residue into a container 7L of water in the reactor, then seal the reactor, and turn on the reactor heater at a speed of 400r / min until the pressure in the reactor reaches 1.8MPa, and after the pressure-holding reaction for 45s, open the discharge valve at the bottom of the reactor , so that the material in the reactor is sprayed into the receiving tank; the receiving tank and the bottom of the reactor are connected throug...

example 3

[0029] Weigh 5kg of wheat straw, wash it repeatedly with water for 4 times, spread the washed wheat straw evenly in the sun and expose it to the sun until the moisture content of the wheat straw is 20%, collect the exposed wheat straw, and cut it into a length of 5cm with a guillotine short stalks, and put the obtained short stalks into 10L of 5% sodium hydroxide solution by mass fraction, stir and mix for 4 hours under the condition of rotating speed of 500r / min, and filter to obtain the alkali leaching filter residue; pour the obtained alkali leaching filter residue into a container 8L of water in the reactor, then seal the reactor, and turn on the heater of the reactor at a speed of 500r / min until the pressure inside the reactor reaches 2.0MPa. , so that the material in the reactor is sprayed into the receiving tank; the receiving tank and the bottom of the reactor are connected through a pipeline except the valve; the material in the receiving tank is naturally cooled to ro...

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Abstract

The invention discloses a method for resource utilization of abandoned crop straws and belongs to the technical field of agricultural abandoned resource utilization. First, abandoned crop straws are washed and exposed to the sun and then cut into short straws and immersed and activated by a sodium hydroxide solution, so post-gluing performance can be improved; the straws are processed by high-pressure and then instantly decompressed, so straw fiber structures can be exploded and degraded to a certain degree; then through centrifugal separation, filter liquid and slag are respectively collected; part of filter slag is processed by cellulase and zinc sulfate and enzymolysis filter cakes can be achieved; part of filter slag is carbonized in the atmosphere of argon and carbonized filter cakes can be achieved; the filter liquid, the enzymolysis filter cakes, the carbonized filter cakes and a sodium silicate solution are mixed and hot-pressed to form plates and then the plates are baked by lignum cinnamomi camphorae chips; lignum cinnamomi camphorae volatile components can be absorbed by the carbonized filter cakes; plate material insect preventing performance can be improved; and the plate can work as composite plate material during indoor decoration.

Description

technical field [0001] The invention discloses a method for resource utilization of waste crop stalks, which belongs to the technical field of utilization of agricultural waste resources. Background technique [0002] In recent decades, with the rapid advancement of agricultural modernization and the improvement of farmers' living standards, large-scale open-air burning of waste crop straw by farmers in vast rural areas has become a significant social problem. Crop straw is an important resource for agricultural production and one of the main raw materials for biomass energy. Straw burning not only wastes precious resources, but also causes serious environmental pollution. Therefore, it has become an important task to find effective resource utilization ways for a large amount of discarded crop straws. [0003] In the 1980s, farmers began to burn straw on a large scale in order to rush to sow seeds, which became a topic of widespread concern to the government and society. ...

Claims

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Application Information

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IPC IPC(8): D21B1/02D21B1/06D21C5/00D21J1/00
CPCD21B1/021D21B1/061D21C5/00D21C5/005D21J1/00
Inventor 李小兰许丽君
Owner 潞城市创蓝生物科技有限公司
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