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Domestic garbage burning processing method

A technology for domestic waste incineration and domestic waste, applied in combustion methods, combustion product treatment, incinerators and other directions, can solve the problem of high cost of flue gas purification and treatment, reduce the cost of flue gas purification and treatment, and reduce the production of dioxins Effect

Active Publication Date: 2008-10-15
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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specific Embodiment approach 1

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

[0009] The existing waste incineration process has a step of quenching the flue gas to remove dioxins, but this step of quenching the flue gas cannot remove the heavy metals in the flue gas, and i...

specific Embodiment approach 2

[0012] Embodiment 2: The difference between this embodiment and Embodiment 1 is that in Step 2, electrostatic dust removal or bag dust removal is used. Other steps and parameters are the same as those in Embodiment 1.

specific Embodiment approach 3

[0013] Specific embodiment 3: The difference between this embodiment and specific embodiment 1 is: the excess amount of air passed into the shaft kiln in step 3 is 160% to 180%. Other steps and parameters are the same as those in Embodiment 1.

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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 domestic waste 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 for treating garbage. Background technique [0002] There are currently three main ways to deal with domestic waste: landfill, high-temperature composting, and incineration. Landfill is to fill the garbage into the ground, which requires a large amount of land, can be used for a short time, and easily pollutes groundwater sources. Garbage high-temperature composting uses microorganisms to ferment and degrade organic matter, but only part of the garbage can be treated in this way, so the garbage must be sorted before composting, which increases the difficulty of garbage treatment. Although waste incineration can overcome the shortcomings of the above methods, and can greatly reduce the amount of waste, and at the same time recover the heat generated by incineration for use, the disadvantage of waste incineration is that the cost of cleaning the flue gas generated after incineration is too high. Contents of the invent...

Claims

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Application Information

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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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