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A method for co-processing domestic waste in cement kilns

A domestic garbage and co-processing technology, which is applied in the direction of combustion methods, waste heat treatment, furnaces, etc., can solve the problems of poor combustion effect, high moisture content, and poor exhaust emission quality, and achieve stable calorific value, stable composition, and uniform quality. Effect

Active Publication Date: 2022-04-19
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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  • A method for co-processing domestic waste in cement kilns
  • A method for co-processing domestic waste in cement kilns
  • A method for co-processing domestic waste in cement kilns

Examples

Experimental program
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Effect test

Embodiment 1

[0033] A method for the collaborative disposal of domestic garbage by cement kilns, the main scheme of which is:

[0034] First of all, the domestic garbage is leached and the liquid seepage is initially separated; then the garbage enters the sorting system, sorts the domestic garbage to be treated, and sorts out the non-combustible hard materials such as metals and stones in the garbage; then the sorted garbage enters the crushing system to crush, requiring the crushing block degree of the garbage to be 10mm; the crushed garbage block enters the drying system, and the moisture content of the garbage breakage is dried to 10%; the garbage broken block after drying enters the mixing tank and adds 2% The molding aid and 13% of the auxiliary fuel, after fully mixing evenly into the granulation equipment for extrusion granulation, the garbage particles are particle size of 10mm irregular particles; after completion of the garbage particles again into the drying system, the moisture con...

Embodiment 2

[0046] A method for the collaborative disposal of domestic garbage by cement kilns, the main scheme of which is:

[0047] First of all, the domestic garbage is leached, and the liquid seepage is initially separated; then the garbage enters the sorting system, sorts the domestic garbage to be treated, and sorts out the non-combustible hard materials such as metals and stones in the garbage; then the sorted garbage enters the crushing system to crush, requiring the crushing block degree of the garbage to be 30mm; the broken garbage block enters the drying system, and the moisture content of the garbage breaking block is dried to 15%; the garbage broken block after drying enters the mixing tank and adds 6% The molding aid and 18% of the auxiliary fuel, after fully mixing evenly into the granulation equipment for extrusion granulation, the garbage particles are particle size of 30mm irregular particles; after the completion of the garbage particles again into the drying system, the mo...

Embodiment 3

[0059] A method for the collaborative disposal of domestic garbage by cement kilns, the main scheme of which is:

[0060] First of all, the domestic garbage is leached, and the liquid seepage is initially separated; then the garbage enters the sorting system, sorts the domestic garbage to be treated, and sorts out the non-combustible hard materials such as metals and stones in the garbage; then the sorted garbage enters the crushing system to crush, requiring the crushing block degree of the garbage to be 50mm; the broken garbage block enters the drying system, and the moisture content of the garbage breakage is dried to 25%; the garbage broken block after drying enters the mixing tank and adds 8% to the mixing tank. The molding aid and 25% of the auxiliary fuel, after fully mixing evenly into the granulation equipment for extrusion granulation, the garbage particles are particle size of 50mm irregular particles; after completion of the garbage particles again into the drying syst...

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Abstract

The invention relates to the field of environmental protection, and specifically relates to a method for co-processing household garbage in a cement kiln; the processing steps are: leach treatment, sorting, crushing, drying, extrusion granulation and incineration; the invention adds a cheap The molding aid obtained by modifying waste plastics can turn domestic waste into granular cement kiln fuel with stable calorific value, uniform quality, stable composition, and easy combustion. Utilize the residual heat of cement kiln to dry garbage, use the incinerated ash as raw material for cement production, and turn domestic garbage into treasure; through the two-stage incineration technology, the present invention first thermally decomposes the garbage pellets at high temperature in a low-oxygen environment, and then converts them The decomposed solids and gases are introduced into the combustion chamber for full combustion; the invention solves the problems of poor combustion effect of domestic garbage, poor quality of tail gas emission, incomplete combustion of slag, etc., without causing secondary pollution.

Description

Technical field [0001] The present invention relates to the field of environmental protection, in particular a method of collaborative disposal of domestic garbage by a cement kiln. Background [0002] With the continuous improvement of people's living standards and urbanization level, people produce more and more domestic garbage, more and more types of waste contained in garbage, and the treatment of urban garbage is more and more valued by the World Environmental Protection Organization. [0003] CN109539264A discloses a kind of waste incineration equipment and waste incineration method, involving the field of garbage treatment, to solve the existing garbage incineration equipment spray gun in the pressure is unstable easy to affect the leachate atomization effect and the leachate return to other users of the gas caused by the problem, the technical solution is the incineration equipment including incinerator, standing rack, set under the standing rack of the collection box, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
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