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A sintering flue gas circulation online purification synchronous waste heat recovery system based on vertical sintering

A waste heat recovery system and a technology for sintering flue gas, applied in the fields of smelting equipment and energy conservation and environmental protection, can solve the problems of inability to efficiently recover waste heat and waste energy of flue gas, air leakage, serious problems, etc.

Active Publication Date: 2021-09-14
湖北展鹏电子材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0019] However, due to the constraints of the existing belt draft sintering process characteristics in the iron and steel industry, the circulation of sintering flue gas cannot efficiently recover the waste heat and energy in the flue gas, and the problem of air leakage in the sintering machine still cannot be solved. Even with the implementation of flue gas circulation , the air leakage phenomenon is more serious

Method used

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  • A sintering flue gas circulation online purification synchronous waste heat recovery system based on vertical sintering
  • A sintering flue gas circulation online purification synchronous waste heat recovery system based on vertical sintering
  • A sintering flue gas circulation online purification synchronous waste heat recovery system based on vertical sintering

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Embodiment 1

[0065] Example 1: Sintering flue gas circulation online purification and synchronous waste heat recovery system based on vertical sintering

[0066] Such as figure 1 , figure 2 , image 3 As shown, the vertical sintering machine of the present invention includes 4 sintering chambers 2, 3 air inlet chambers 1, and 2 air outlet chambers 3. The sintering chamber 2 stands side by side between the air inlet chamber 1 and the air outlet chamber 3. The air inlet chamber 1 and the air outlet chamber 3 are separated by a grate bar 11 which is permeable to smoke;

[0067] The top of the gas outlet chamber 3 is closed and a discharge guide plate 6 is provided at the bottom. The gas outlet chamber 3 is composed of an ignition flue I, a low temperature flue II, a high SO 2 Flue III, low NO x Flue IV, high-temperature flue V, cooling flue VI are composed of six exhaust areas, ignition flue I, low-temperature flue II, low NO x The bottoms of the flue IV, the high-temperature flue V, an...

Embodiment 2

[0094] Example 2: Sintering flue gas circulation recovery waste heat and online desulfurization and denitrification system based on vertical sintering

[0095] Such as Figure 4 , the vertical sintering machine includes 16 sintering chambers 2, 9 inlet chambers 1, and 8 outlet chambers 3. The sintering chamber 2 stands side by side between the inlet chamber 1 and the outlet chamber 3. The air outlet chamber 3 is separated by a grate bar 11 that can permeate the smoke; similar to that of embodiment 1 figure 1 The structure shown, such as Figure 8 In this embodiment, the air inlet chamber 1, the air outlet chamber 3, and the sintering chamber 2 are divided into multiple identical areas from top to bottom:

[0096] The intake chamber 1 includes the following intake areas: ignition channel A, low temperature channel B, SO 2 Concentration increasing channel C, NO x Concentration reduction channel D, high temperature channel E, and cooling channel F; each air intake area in the...

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Abstract

The invention discloses a sintering flue gas circulation online purification and synchronous waste heat recovery system based on vertical sintering, which includes a sintering chamber, an air inlet chamber, and an air outlet chamber. It is divided into ignition area, low-temperature flue gas area, sintering flue gas area, cooling area and unloading area under the gas outlet chamber; the dust-laden gas generated in the unloading area enters the sintering chamber from the cooling channel under the action of suction to cool the sinter And filtered, then lead out from the cooling flue and sent to the ignition channel and low temperature channel after dedusting, and pass through the sintering channel, sintering chamber and sintering flue again under the suction of the corresponding exhaust fan in the ignition area and low temperature flue gas area, Participate in combustion-supporting sintering in the sintering material layer. At the same time, this device also enriches the flue gas sent into the low-temperature flue to SO 2 Finally, wet desulfurization in the low-temperature flue, and the desulfurized flue gas is sent to the high-temperature flue for online denitrification. This device solves the problem of air leakage in the existing sintering device, saves energy and reduces consumption, and reduces pollutant emissions.

Description

technical field [0001] The invention belongs to the field of smelting equipment and energy saving and environmental protection in the metallurgical industry, and specifically relates to a vertical sintering-based sintering flue gas circulation on-line purification and synchronous waste heat recovery system, which can realize efficient recycling and utilization of flue gas waste heat and waste energy in the sintering process, and completely solve the problem The air leakage problem in the traditional belt draft sintering can significantly reduce the energy consumption of the sintering process and reduce pollutant emissions. Background technique [0002] In order to control the generation of flue gas pollutants in the sintering process and reduce the emission of flue gas pollutants in sintering, researchers at home and abroad have conducted a lot of research on the whole process of source control, process management and end treatment. Due to the constraints of the existing sin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F27D17/00
CPCF27D17/004F27D17/008
Inventor 王世杰金豪吴高明吴枭雄程新
Owner 湖北展鹏电子材料有限公司
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