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A comprehensive in-furnace denitrification method for waste incineration with high efficiency and low cost

A waste incineration, low-cost technology, applied in combustion methods, incinerators, combustion types, etc., can solve the problems of high cost, high catalytic denitration efficiency, low removal efficiency, etc., and achieve low cost, good effect, and improved mixing degree. Effect

Active Publication Date: 2021-05-28
王惠生
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] Aiming at the disadvantages of high catalytic denitrification efficiency, high cost and low removal efficiency in the prior art, the present invention provides a high-efficiency and low-cost integrated furnace denitrification method for waste incineration to solve the above technical problems

Method used

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  • A comprehensive in-furnace denitrification method for waste incineration with high efficiency and low cost
  • A comprehensive in-furnace denitrification method for waste incineration with high efficiency and low cost
  • A comprehensive in-furnace denitrification method for waste incineration with high efficiency and low cost

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Embodiment 1

[0028] Example 1 A high-efficiency and low-cost integrated furnace denitrification method for waste incineration

[0029] combine figure 1 It can be seen that the high-efficiency and low-cost integrated furnace denitrification method for waste incineration of the present invention, the specific steps are as follows: perform a low-nitrogen combustion step in the secondary combustion chamber, and simultaneously perform denitrification treatment in combination with urea atomization, and the treated flue gas is discharged from the secondary combustion chamber. Room for subsequent processing;

[0030] Specifically, the flue gas enters the secondary combustion chamber from the flue gas inlet 1, and the low-nitrogen combustion is mainly in the casing of the secondary combustion chamber. The flue gas inlet and outlet of the combustion chamber are set tangentially, and the temperature of the second combustion chamber is controlled at 850-950°C.

[0031] The low-nitrogen combustion in...

Embodiment 2 2

[0033] Embodiment 2 Second combustion chamber structure

[0034] The air supply port 3 is arranged on the second combustion chamber, and the air supply port 3 is located at 1 / 4, 2 / 4, and 3 / 4 of the height direction of the second combustion chamber from bottom to top; the entrance of the air supply port 3 is connected with the smoke in the second combustion chamber. The air running direction is opposite; the air volume regulating valve is set on the air supply port.

[0035] The secondary combustion chamber is a cylindrical structure with a height-to-diameter ratio of 4:1.

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Abstract

The invention relates to the technical field of waste incineration treatment, in particular to a comprehensive in-furnace denitrification method for waste incineration with high efficiency and low cost. The method of the present invention carries out the low-nitrogen combustion step in the secondary combustion chamber, and at the same time combines urea atomization to perform denitrification treatment, and the treated flue gas is discharged from the secondary combustion chamber for subsequent treatment; through the low-nitrogen combustion process, urea atomization denitrification, and high-efficiency denitrification The comprehensive denitrification method in the second combustion chamber has low cost and good effect.

Description

technical field [0001] The invention relates to the technical field of waste incineration treatment, in particular to a comprehensive in-furnace denitrification method for waste incineration with high efficiency and low cost. Background technique [0002] Waste incineration is the process of reducing the volume of waste through oxidation at high temperature through appropriate thermal decomposition, combustion, melting and other reactions, and turning it into residue or molten solid matter. [0003] Waste incineration facilities must be equipped with flue gas treatment facilities to prevent heavy metals and organic pollutants from being discharged into the environmental medium again. Recycling the heat generated by garbage incineration can achieve the purpose of recycling waste. [0004] Conventional flue gas denitrification, catalytic denitrification (SCR) has high efficiency and high cost; non-catalytic denitrification (SNCR) has low removal efficiency and is difficult to...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F23G5/16F23G5/44F23G5/50
CPCF23G5/16F23G5/44F23G5/50
Inventor 王惠生
Owner 王惠生
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