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Domestic garbage burning processing method

A technology for domestic waste incineration and domestic waste, which is applied in combustion methods, combustion product treatment, incinerators and other directions, can solve the problem of high cost of flue gas purification and treatment, and achieve the effect of reducing the production of dioxins and reducing costs.

Active Publication Date: 2010-06-16
湖南哈工机器人研究院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a method for domestic waste incineration in order to solve the problem that the current cost of flue gas purification and treatment after incineration is too high

Method used

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Examples

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Effect test

specific Embodiment approach 1

[0008] Specific embodiment 1: In this embodiment, domestic garbage is incinerated according to the following steps: 1. Put domestic garbage into an incinerator for incineration; 2. Deacidify and remove dust from the incineration tail gas; 3. Send the flue gas after dust removal into a vertical kiln 2. Secondary incineration: The air introduced into the secondary incineration shaft kiln must be pre-heated, and the excess air amount is 140% to 200%; 4. After the secondary incineration flue gas is processed, it can be discharged into the atmosphere; among them, step three The temperature in the shaft kiln is from 1100 to 1700°C, the air temperature after preheating is not less than 150°C, and the residence time of the flue gas after dust removal in the shaft kiln is at least 2s.

[0009] Existing waste incineration processes use flue gas quenching to remove dioxins, but this flue gas quenching step cannot remove heavy metals in the flue gas, and requires additional heavy metal treatm...

specific Embodiment approach 2

[0012] Specific embodiment two: this embodiment is different from specific embodiment one in that in step two, electrostatic dust removal or bag dust removal is used. The other steps and parameters are the same as the first embodiment.

specific Embodiment approach 3

[0013] Specific embodiment three: the difference between this embodiment and the specific embodiment one is: in step three, the excess amount of air introduced into the vertical kiln is 160% to 180%. The other steps and parameters are the same as the first embodiment.

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Abstract

The invention discloses a method for incineration treatment of domestic waste, relating to a method for processing waste, which solves the problem of high purification treatment cost for smoke gas which is generated after incineration in the prior art. The method for incineration treatment of domestic waste comprises the following steps of: 1. incinerating; 2. deacidifying and dust-removing exhaust fume of the incinerating; 3. feeding smoke gas which undergoes the dust removal into a vertical kiln for secondary incineration; 4. post processing the smoke gas after the secondary incineration, and discharging into air. The method for incineration treatment of domestic waste also comprises the step of burning sufficiently unburnt organic pollution pollutant in the vertical kiln at a temperature of between 1400 and 1700 DEG C and further purifying the pollutant in the smoke gas by using humid green pellets in the middle section and the upper section of the cement vertical kiln. The domesticwaste is processed by the method, the index of exhausted gas is better than Standard for Pollution Control on the Municipal Solid Waste Incineration in China (GB18485-2001), at the same time, the purification treatment cost for the smoke gas is reduced greatly.

Description

Technical field [0001] The invention relates to a method of garbage disposal. Background technique [0002] The treatment of domestic garbage currently mainly includes three treatment methods: landfill, high-temperature composting and incineration. Landfill is the filling of garbage into the ground, which requires a large amount of land, can be used for a short time, and easily pollutes underground water sources. High-temperature garbage composting uses microorganisms to ferment and degrade organic matter, but only some garbage can be treated with this method. Therefore, garbage must be sorted before composting, which increases the difficulty of garbage disposal. Although garbage incineration can overcome the shortcomings of the above methods, and can greatly reduce the amount of garbage, and at the same time recover the heat generated by incineration for use, the disadvantage of the garbage incineration method is that the cost of purification of flue gas generated after inciner...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F23G5/16F23J3/00F23J15/02
Inventor 刘惠玲马军李旭红石杏茹
Owner 湖南哈工机器人研究院有限公司
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