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Soil improvement material suitable for oxidative soil

A soil improvement and oxidative technology, applied in the direction of soil conditioning materials, preparation and application of organic compounds, etc., can solve the problems of reduced effect, large waste water pollution, limited market demand, etc., achieve strong acidity, good slow release, Effect of improving cation exchange capacity

Inactive Publication Date: 2010-12-29
NANCHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Research on the utilization of biochar is still relatively limited
In 2007, Gao Longlan et al. used alkali treatment microwave activation method to activate microwave cracked bamboo charcoal, and obtained activated carbon with strong adsorption capacity, but the treatment process produced large waste water pollution.
In 2009, Han Dongping successfully developed the sulfonated biocoke solid acid catalyst, but its market demand is very limited
However, the effect of the part that is burned red at high temperature decreases instead.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Step 1. The bagasse is crushed to a particle size of less than 5 cm; the clay clay particles of the red soil are passed through a sieve of more than 40 meshes for later use.

[0020] Step 2. Dissolve 5 parts of phosphoric acid and 0.5 part of sulfuric acid in 200 parts of water to obtain an acidic mixed solution. Spray the acidic mixed solution evenly into 100 parts of the bagasse raw material processed in step 1. After mixing and stirring evenly, pour it into the wet bagasse Sprinkle 100 parts of the red soil clay particles processed in step 1 into the raw material, and stir evenly to obtain the pretreated bagasse raw material.

[0021] Step 3. Take the bagasse raw material pretreated in step 2, and crack it in a screw-propelled continuous biomass microwave cracking device. Continuously push the screw pusher to the reaction site, set the energy-saving state of the microwave cracking temperature and power at 450°C±10°C, the total reaction time of bagasse passing through...

Embodiment 2

[0024] Step 1. The rice straw is crushed to a particle size of less than 5 cm; the montmorillonite is passed through a sieve of more than 40 mesh for later use.

[0025] Step 2. Dissolve 7 parts of phosphoric acid and 0.2 part of sulfuric acid in 200 parts of water to obtain an acidic mixed solution. Spray the acidic mixed solution evenly into 100 parts of the straw raw material treated in step 1. Sprinkle 150 parts of montmorillonite treated in step 1 into the raw material, and stir evenly to obtain the pretreated straw raw material.

[0026] Step 3. Take the straw raw material after the pretreatment in step 2, and crack it in a screw-propelled continuous biomass microwave cracking device. Continuously push the screw pusher to the reaction site, set the energy-saving state of the microwave cracking temperature and power at 480°C±10°C, the total reaction time of the straw passing through the reaction site is 35min, and the liquid cracking products and non-condensable gases are...

Embodiment 3

[0029] Step 1. Bamboo waste is crushed to a particle size of less than 5 cm; the kaolin is passed through a sieve of more than 40 mesh for later use. Step 2. get 10 parts of phosphoric acid, 0.5 part of sulfuric acid and dissolve in 200 parts of water to obtain an acidic mixed solution, and the acidic mixed solution is evenly sprayed into 100 parts of bamboo waste raw materials processed through step 1, after mixing and stirring, pour the acidic mixed solution into the wet Sprinkle 200 parts of kaolin treated in step 1 into the bamboo waste raw material, and stir evenly to obtain the pretreated bamboo waste raw material.

[0030] Step 3. Take the pretreated bamboo waste raw material in step 2, and crack it in a screw-propelled continuous biomass microwave cracking device. The screw pusher is used to push continuously to the reaction site, set the energy-saving state of microwave cracking temperature and power at 500°C±10°C, the total reaction time of bamboo waste passing throu...

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Abstract

The invention relates to a soil improvement material suitable for oxidative soil. A method comprises the following steps of: 1, sieving clay minerals through a screen of over 40 meshes for later use; 2, uniformly stirring biomass, the clay minerals and a catalyst to obtain a preprocessed biomass raw material; 3, collecting solid residue biological cokes as the raw material for preparing a soil structure conditioner from a discharge port on the tail part of a cracking unit; and 4, using the neutralized biological cokes as the structure conditioner of multiple kinds of oxidative soil. The invention has the advantages that: 1, the return utilization of the biological cokes which are modified reasonably is a main feasible approach of solving the problem that the biomass is excessively developed and utilized to possibly cause nutrient loss of the soil and cause balance destruction of soil organic matters; 2, the soil improvement material is particularly effective for structure improvement of the oxidative soil with obvious desilicication and aluminum enrichment trend, such as yellow soil, red soil, laterite and the like; and 3, due to the application of clay in biomass cracking, a tar substance, particularly condensed nuclear hydrocarbon is avoided.

Description

technical field [0001] The invention relates to a soil improvement material, in particular to a soil improvement material suitable for oxidative soil. Background technique [0002] Agroforestry biomass with lignocellulose as the main component is the most abundant renewable resource on land. Biomass is not only a treasure trove of valuable natural polymer materials, but also contains rich chemical energy and complete plant nutrients - known and unknown. Fossil resources are becoming increasingly depleted, and a new chemical industrial system represented by biomass refining is being formed. However, it is dangerous to completely ignore the role of biomass in the ecosystem cycle. Only by rationally developing and fully utilizing biomass Only then can we ensure the sustainable development goals of mankind. [0003] Among the existing biomass refining methods, biomass microwave-assisted directional catalytic cracking technology is the most viable. The microwave cracking react...

Claims

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Application Information

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IPC IPC(8): C09K17/40C07C53/08C07C51/00C07D307/50C09K101/00
Inventor 刘玉环阮榕生曾稳稳王允圃
Owner NANCHANG UNIV
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