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Method for co-processing household garbage by cement kiln

A domestic garbage and co-processing technology, applied in the field of environmental protection, can solve problems such as high moisture content, poor combustion effect, secondary pollution, etc., and achieve the effects of uniform quality, stable calorific value, and stable composition

Active Publication Date: 2020-09-22
浙江红狮环保股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The above inventions and prior art incineration of garbage are simply sorted and then put into the incinerator. However, due to the unstable composition of the garbage, high moisture content, and large differences in combustion characteristics, the combustion effect is poor and the oxygen supply is insufficient. The quality of tail gas emission is poor, and the slag is incompletely burned, causing secondary pollution problems

Method used

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  • Method for co-processing household garbage by cement kiln
  • Method for co-processing household garbage by cement kiln
  • Method for co-processing household garbage by cement kiln

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] A method for co-processing domestic waste in cement kilns, the main scheme of which is:

[0034] First of all, the domestic waste is leached to separate the liquid seepage; then the waste enters the sorting system to sort the domestic waste to be processed, and sort out the non-combustible hard materials such as metals and stones in the waste ;Then the sorted garbage enters the crushing system for crushing, and the crushing degree of the garbage is required to be 10mm; the crushed garbage pieces enter the drying system, and the moisture content of the garbage pieces is dried to 10%; The broken pieces of garbage enter the mixing bin, add 2% of forming aids and 13% of auxiliary fuel, mix well and then enter the granulation equipment for extrusion granulation. The garbage granules are not 10mm in size Regular particles; the finished garbage particles enter the drying system again, and the moisture content of the garbage particles is dried to 1%; finally, the obtained garba...

Embodiment 2

[0046] A method for co-processing domestic waste in cement kilns, the main scheme of which is:

[0047] First of all, the domestic waste is leached to separate the liquid seepage; then the waste enters the sorting system to sort the domestic waste to be processed, and sort out the non-combustible hard materials such as metals and stones in the waste ;Then the sorted garbage enters the crushing system for crushing, and the crushing degree of the garbage is required to be 30mm; the crushed garbage pieces enter the drying system, and the moisture content of the garbage pieces is dried to 15%; The broken pieces of garbage enter the mixing bin, add 6% of forming aids and 18% of auxiliary fuel, mix well and then enter the granulation equipment for extrusion granulation. The garbage granules are not 30mm in size regular particles; the completed garbage particles enter the drying system again, and the moisture content of the garbage particles is dried to 3%; finally, the obtained garb...

Embodiment 3

[0059] A method for co-processing domestic waste in cement kilns, the main scheme of which is:

[0060] First of all, the domestic waste is leached to separate the liquid seepage; then the waste enters the sorting system to sort the domestic waste to be processed, and sort out the non-combustible hard materials such as metals and stones in the waste ;Then the sorted garbage enters the crushing system for crushing, and the crushing degree of the garbage is required to be 50mm; the crushed garbage pieces enter the drying system, and the moisture content of the garbage pieces is dried to 25%; The broken pieces of garbage enter the mixing bin, add 8% of forming aids and 25% of auxiliary fuel, mix well and then enter the granulation equipment for extrusion granulation. regular particles; the completed garbage particles enter the drying system again, and the moisture content of the garbage particles is dried to 5%; finally, the obtained garbage particles are put into the pyrolysis f...

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Abstract

The invention relates to the field of environmental protection, and particularly relates to a method for co-processing household garbage by a cement kiln. The method comprises the processing steps ofleaching treatment, sorting, crushing, drying, extrusion granulation and incineration. According to the method, a forming aid obtained by modifying cheap waste plastics is added, so that the householdgarbage is changed into granular cement kiln fuel which is stable in heat value, uniform in quality, stable in component and easy to combust; the characteristics of high temperature, large waste heat, residue utilization and the like of the cement kiln are combined, the waste heat of the cement kiln is fully utilized to dry the garbage, the incinerated ash is used as a cement production raw material, and the household garbage is changed into wealth; and a two-stage incineration technology is adopted, firstly, the garbage granules are subjected to high-temperature thermal decomposition in a low-oxygen environment, and then decomposed solid and gas are guided into a combustion chamber to be fully combusted. According to the method, the problems that the household garbage combustion effect is poor, the tail gas emission quality is poor, the slag combustion is incomplete and the like are solved, and the problem of secondary pollution is avoided.

Description

technical field [0001] The invention relates to the field of environmental protection, in particular to a method for co-processing household garbage in cement kilns. Background technique [0002] With the continuous improvement of people's living standards and urbanization levels, people produce more and more domestic garbage, and the types of waste contained in garbage are increasing. The treatment of urban garbage has attracted more and more attention from the world environmental protection organization. . [0003] CN109539264A discloses a garbage incineration equipment and a garbage incineration method, which relate to the field of garbage treatment, and solve the problem that the spray gun of the existing garbage incineration equipment is easy to affect the leachate atomization effect when the pressure is unstable, and the return of the leachate is harmful to other users. The problem caused by the impact, the key point of the technical plan is that the incineration equi...

Claims

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Application Information

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IPC IPC(8): F23G5/02F23G5/027F23G5/033F23G5/04F23G5/16F23G5/46F23G5/50F27B7/00F27D17/00C08F251/00C08F222/02
CPCF23G5/02F23G5/027F23G5/033F23G5/04F23G5/16F23G5/46F23G5/50F27B7/00F27D17/004C08F251/00C08F222/02
Inventor 赖卫鹤黄敏锐李春萍江立平唐柯李贤忠郭嘉诚吴晨钰
Owner 浙江红狮环保股份有限公司
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