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System and process of ceramsite production and co-processing of dangerous waste

A technology for hazardous waste and co-processing, applied in the improvement of process efficiency, waste heat treatment, combustion methods, etc., can solve the problems of secondary pollution, limited use scope and production capacity, insufficient treatment capacity of special pollutants, etc., and achieve environmental benefits. and significant economic benefits

Pending Publication Date: 2018-01-30
山东清博生态材料综合利用有限公司
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, similar to the above-mentioned technologies, there are generally disadvantages such as limited types of hazardous waste disposal, single product, difficulty in maximizing the utilization of intermediate pollutants and waste heat resources, easy to produce secondary pollution, and insufficient treatment capacity for special pollutants such as high-salt hazardous waste. Thus limiting its scope of use and production capacity

Method used

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  • System and process of ceramsite production and co-processing of dangerous waste

Examples

Experimental program
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Effect test

Embodiment 1

[0059] A. Ceramsite production process:

[0060] 1) Raw material pretreatment and mixing: fly ash: 70 parts, sewage plant biochemical sludge: 10 parts, physical and chemical sludge: 2 parts, oil-contaminated soil: 10 parts, slag: 5 parts, waste aluminum silicate insulation material : 3 parts; the fly ash and solid waste or hazardous waste are pre-dried to a moisture content of 1.8% by using the waste heat of the flue gas produced in the incineration section of the ceramsite kiln or the waste salt comprehensive utilization process, and are ground into a particle size of 200-mesh powder, placed in a mixer, and mixed evenly;

[0061] 2) Molding: Send the above-mentioned homogeneously mixed materials into the ball forming machine through the belt, spray high-salt waste liquid dilution evenly into the ball forming machine with a water sprayer, and control the speed of the ball forming disc at 35r / min, so that the green body The particle size reaches 10±2mm; making the green body f...

Embodiment 2

[0075] A. Ceramsite production process:

[0076] 1) Mixing material: take the fly ash produced by the hazardous waste disposal center and the ceramsite kiln and waste salt incineration section of the present invention as the main material, add river bottom mud, organic pesticide polluted soil, heavy metal polluted soil, slag, and FCC waste catalyst , pre-dry the residual heat of the flue gas generated in the incineration section of the waste salt comprehensive utilization process to a moisture content of 1.6%, grind it into powder with a particle size of 190 mesh with a fast pulverizer, place it in a mixer according to the proportion, and mix it evenly; The proportion of each component is: fly ash: 55 parts, river sediment: 20 parts, organic pesticide polluted soil: 10 parts, heavy metal polluted soil: 5 parts, slag: 5 parts, FCC waste catalyst: 5 parts;

[0077] 2) Forming: Send the above-mentioned uniformly mixed materials into the ball forming machine through the belt, spra...

Embodiment 3

[0089] A. Ceramsite production process:

[0090] 1) Mixing material: take the fly ash produced by the thermal power plant, hazardous waste disposal center and the ceramsite kiln and waste salt incineration section of the present invention as the main material, add domestic sludge, heavy metal polluted soil, rock wool, and use the ceramsite kiln to produce The residual heat of the flue gas is pre-dried to a moisture content of 1.5%, and it is ground into a powder with a particle size of 250 mesh by a fast pulverizer, which is placed in a mixer according to the proportion and mixed evenly; the proportion of each component is: fly ash : 90 parts, domestic sludge: 5 parts, heavy metal polluted soil: 5 parts, rock wool: 5 parts;

[0091] 2) Forming: Send the above-mentioned uniformly mixed materials into the ball forming machine through the belt, spray water and a certain proportion of petrochemical waste lye into the ball forming machine evenly with a water sprayer, and the total ...

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Abstract

The invention belongs to the technical field of dangerous waste processing and comprehensive utilization, and provides a method for ceramsite production and co-processing of dangerous waste. The method mainly includes a ceramsite production process and a waste salt comprehensive utilization process; the ceramsite production process includes material blending, molding, pre-burning, roasting and other process steps; the waste salt comprehensive utilization process includes incineration, salt separation, waste heat utilization, tail gas purification and other process steps. By adopting the process, co-processing of the dangerous waste and various solid waste including high-salinity dangerous waste, high-heat dangerous waste, sludge, contaminated soil, slags and the like can be achieved; maximum utilization and harmless processing of the intermediate pollutants, including smoke, flying dust, slags, mother liquid and the like, which are generated in the production process, waste heat resources and all the dangerous waste raw materials can be achieved in the system, the ceramsite high in strength, sodium chloride products high in purity and sodium sulfate products high in purity are finally obtained, and the tail gas satisfies the emission standards. The process is compact and reasonable and easy to popularize and implement and has great economic benefits, environmental benefits andsocial benefits.

Description

technical field [0001] The invention belongs to the technical field of hazardous waste disposal and comprehensive utilization, and provides a system and process for co-processing hazardous waste produced by ceramsite. Background technique [0002] Hazardous waste refers to waste that is included in the national list of hazardous waste or identified according to the national hazardous waste identification standards and identification methods, and has hazardous properties such as corrosiveness, toxicity, flammability, reactivity or infectivity. With the acceleration of my country's industrialization process, the amount of hazardous waste discharged during industrial production is increasing. According to statistics, the actual output of hazardous waste in my country has reached 6,000-10,000 tons per year. If hazardous waste cannot be properly disposed of, it will seriously damage the ecological environment. , endangering human health. [0003] At present, the main treatment me...

Claims

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Application Information

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IPC IPC(8): F23G5/16F23G7/04F23G5/46F27D17/00
CPCY02P10/25
Inventor 马韵升史庆苓胡树峰赵伟李飞白坤邢友亮高锦鹏
Owner 山东清博生态材料综合利用有限公司
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