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Organic-inorganic complex generated by catalytic cracking of clay minerals and application of the organic-inorganic complex

A clay mineral, catalytic cracking technology, applied in the field of soil remediation, can solve problems such as no major research progress, achieve the effect of improving hydrothermal carbonization efficiency, improving preservation ability, and shortening reaction time

Inactive Publication Date: 2020-01-21
国家林业和草原局竹子研究开发中心
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There has been no major research progress in the method of adsorbing polluted soil through complexes in soil

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Example 1: first mix biomass, clay mineral material and water, wherein the weight ratio of biomass dry weight, clay mineral material and water is 1:0.2:10; Heating and carbonization in a closed reaction kettle; after the reaction is terminated, cool the product, separate the product in the reaction kettle from solid to liquid, and dry the solid phase product to obtain a brown or black organic-inorganic complex with a water content of 15%. The temperature of the water in the reaction kettle is 200°C, the reaction time is 80min, and the stirring speed is 150r·min -1 . The biomass is a biomass material with a particle size of less than 2 mm and a cellulose content greater than 10 percent; the clay mineral material is a 2:1 clay mineral montmorillonite with a particle size of less than 0.3 mm.

[0015] The solid organic-inorganic complex obtained above is used as a soil degradation restoration material, and can be applied to the restoration of acidified, barren, salinized,...

Embodiment 2

[0016] Example 2: first mix biomass, clay mineral material and water, wherein the weight ratio of biomass dry weight, clay mineral material and water is 1:0.3:14; Heating and carbonization in a closed reaction kettle; after the reaction is terminated, cool the product, separate the product in the reaction kettle from solid to liquid, and dry the solid phase product to obtain a brown or black organic-inorganic complex with a water content of 15%. The temperature of the water in the reactor is 250°C, the reaction time is 100min, and the stirring speed is 200r·min -1 . The biomass is a biomass material with a particle size of less than 2mm and a cellulose content greater than 10%; the clay mineral material is a 2:1 type clay mineral illite with a particle size of less than 0.3mm.

[0017] The solid organic-inorganic complex obtained above is used as a soil degradation restoration material, and can be applied to the restoration of acidified, barren, salinized, and heavy metal-pol...

Embodiment 3

[0018] Example 3: first mix biomass, clay mineral material and water, wherein the weight ratio of biomass dry weight, clay mineral material and water is 1:0.5:15; Heating and carbonization in a closed reaction kettle; after the reaction is terminated, cool the product, separate the product in the reaction kettle from solid to liquid, and dry the solid phase product to obtain a brown or black organic-inorganic complex with a water content of 15%. The temperature of the water in the reaction kettle is 300°C, the reaction time is 100min, and the stirring speed is 300r·min -1 . The biomass is a biomass material with a particle size of less than 2mm and a cellulose content greater than 10%; the clay mineral material is a 2:1 clay mineral montmorillonite and illite with a particle size of less than 0.3mm mixed in a ratio of 1:1 get the combination.

[0019] The solid organic-inorganic complex obtained above is used as a soil degradation restoration material, and can be applied to ...

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Abstract

The invention relates to an organic-inorganic complex generated by catalytic cracking of clay minerals and application of the organic-inorganic complex. The brown or black organic-inorganic complex with the water content of less than 20% is prepared by mixing biomass, a clay mineral material and water in a weight ratio of 1:(0.1-0.5):(5-15) based on dry basis weight of the biomass; putting the mixed material into a closed reaction kettle with a stirring function for heating and carbonizing; and after the reaction is finished, cooling the product, carrying out solid-liquid separation on the product in the reaction kettle, and drying the solid-phase product. The biomass material is any biomass material with the particle size smaller than 2 mm and the cellulose content larger than 10%; the clay mineral material is 2:1 type clay mineral montmorillonite or illite with the particle size smaller than 0.3 mm or a combination of montmorillonite and illite with the particle size smaller than 0.3mm in any proportion. The organic-inorganic complex can be applied to remediation of various kinds of crushed or polluted soil.

Description

technical field [0001] The invention relates to the technical field of soil remediation, in particular to an organic-inorganic composite produced by catalytic cracking of clay minerals and an application thereof. Background technique [0002] Soil degradation, soil erosion, barrenness, and desertification have become one of the key issues for the sustainable development of agriculture in my country. The "Blue Book on Land Consolidation" released by the Ministry of Land and Resources of China on June 24, 2014 pointed out that the area of ​​cultivated land in China is about 50 million mu under moderate and severe pollution, and the soil pollution is serious in many areas, especially around major cities, major traffic lines and rivers. The heavy metals and organic pollutants in the cultivated land along the coast have seriously exceeded the standard, causing a series of problems such as food safety. According to estimates, the amount of food polluted by heavy metals is as high...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B09C1/08B01J21/16C09K17/40
CPCB01J21/16B09C1/08C09K17/40
Inventor 钟哲科杨生茂张小平卞方圆刘玉学
Owner 国家林业和草原局竹子研究开发中心
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