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A method for synchronous recycling of hazardous waste with high calorific value and municipal solid waste

A technology for hazardous waste and solid waste, applied in applications, gas fuel, household appliances, etc., can solve the problems of cumbersome steps, poor utilization of resources, and failure to fully utilize hazardous waste, etc., and achieves simple preparation methods and is conducive to maintaining and optimize, reduce the effect of the possibility

Active Publication Date: 2017-08-25
山东兴硕环保科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method not only has cumbersome steps, but also fails to make full use of the heat of hazardous waste, and the resource utilization is not good.

Method used

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  • A method for synchronous recycling of hazardous waste with high calorific value and municipal solid waste
  • A method for synchronous recycling of hazardous waste with high calorific value and municipal solid waste
  • A method for synchronous recycling of hazardous waste with high calorific value and municipal solid waste

Examples

Experimental program
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Effect test

Embodiment 1

[0049] A method for synchronous recycling of hazardous waste with high calorific value and municipal solid waste, comprising the following steps:

[0050] (1) Mix dewatered sludge (moisture content 80%), construction slag, and power plant fuel residue in a mass ratio of 5:5:4, and stale for 30 days to obtain stacked materials with a total moisture content of 28wt%;

[0051] (2) Mix hazardous wastes and homogenize and pulverize them. After pulverization, the particle diameter is controlled to between 5-8mm, and pyrolyzed at 1550°C for 2 hours without oxygen to obtain pyrolysis gas and pyrolysis slag; pyrolysis gas is obtained at 6000 Plasma gasification at ℃ temperature for 5s to obtain artificial combustible gas;

[0052] The total solid carbon content TC after the hazardous waste is mixed: the total moisture content is 0.7:1, the mass ratio; the calorific value of the hazardous waste is 16.8MJ / Kg;

[0053] (3) Mix the pyrolysis slag obtained in step (2) with the composting m...

Embodiment 2

[0059] A method for synchronous recycling of hazardous waste with high calorific value and municipal solid waste, comprising the following steps:

[0060] (1) Mix dewatered sludge (moisture content 70%), construction slag, and power plant fuel residue in a mass ratio of 3:3:2, and stale for 20 days to obtain stacked materials with a total moisture content of 26wt%;

[0061] (2) Mix hazardous wastes and homogenize and pulverize them. After pulverization, the particle diameter is controlled to be between 5-8mm, and pyrolyzed at 1600°C for 1 hour without oxygen to obtain pyrolysis gas and pyrolysis slag; Plasma gasification at ℃ for 10s to obtain artificial combustible gas;

[0062] The total solid carbon content TC after the hazardous waste is mixed: the total moisture content is 0.8:1, the mass ratio; the calorific value of the hazardous waste is 16.2MJ / Kg;

[0063] (3) Mix the pyrolysis slag obtained in step (2) with the composting material obtained in step (1) in a volume ra...

Embodiment 3

[0066] A method for synchronous recycling of hazardous waste with high calorific value and municipal solid waste, comprising the following steps:

[0067] (1) Mix dewatered sludge (water content 60%), construction slag, and power plant fuel residue in a mass ratio of 4:3:1, and stale for 25 days to obtain stacked materials with a total water content of 30wt%;

[0068] (2) Mix hazardous waste and homogenize and pulverize it. After pulverization, the particle diameter is controlled to be between 5-8mm, and it is anaerobically pyrolyzed at 1580°C for 1.5h to obtain pyrolysis gas and pyrolysis slag; Plasma gasification at 5000°C for 10s to obtain artificial combustible gas;

[0069] The total solid carbon content TC after the hazardous waste is mixed: the total moisture content is 0.85:1, mass ratio; the calorific value of the hazardous waste is 15.2MJ / Kg;

[0070] (3) Mix the pyrolysis slag obtained in step (2) with the composting material obtained in step (1) in a volume ratio ...

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Abstract

A method for synchronous recycling of hazardous waste with high calorific value and municipal solid waste according to the present invention comprises the following steps: (1) dewatering sludge, construction dregs, and power plant fuel residues according to (3-5): (2-4 ): (1~3) mixed in mass ratio, stale for 20~30 days to obtain composted materials; (2) after mixing hazardous waste and homogenizing and pulverizing, anaerobic pyrolysis at a temperature above 1500°C for 1~2h, Pyrolysis gas and pyrolysis slag are obtained; pyrolysis gas is plasma gasified at a temperature above 5000°C for 5‑10s to obtain artificial combustible gas; ‑80) The volume ratio is mixed evenly, and granulated to obtain raw material balls; (4) The raw material balls are sintered and formed, and cooled to obtain the finished product of ceramsite. The invention reduces the exploitation of primary energy and resources, reduces the damage to the natural environment, is beneficial to the maintenance and optimization of the original ecological system, and improves the industrial income.

Description

technical field [0001] The invention relates to a method for synchronous resource utilization of high calorific value hazardous waste and municipal solid waste, belonging to the technical field of energy conservation and environmental protection. Background technique [0002] In the process of urban modernization, there are garbage siege, smog-type air pollution, secondary pollution of groundwater, surface water quality decline, heavy metals in the soil exceeding the standard, less organic in agricultural production, nowhere to landfill construction waste, and high cost of hazardous waste treatment. Common problems; Among them, municipal solid waste (mainly sludge, construction dregs, etc.) and hazardous waste have become important factors that plague urban environmental problems. At present, landfill is the main treatment method for urban sludge. This method not only wastes land resources, occupies urban development space, but also has the possibility of secondary pollution...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10L3/00C04B38/00
Inventor 齐元峰戴碧波孟萌崔金川戴勇鹏
Owner 山东兴硕环保科技有限公司
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