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Coke oven flue gas denitration and desulfurization waste heat utilization integrated device

A technology for coke oven flue gas and denitration, which is applied in gas treatment, indirect heat exchangers, lighting and heating equipment, etc., can solve problems such as energy waste, increase the cost of flue gas purification and treatment, and reduce the activity of SCR denitration catalysts. The effect of realizing heat recovery and improving heat recovery efficiency

Inactive Publication Date: 2020-08-18
JIANGSU FENGYE TECH ENVIRONMENTAL PROTECTION GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] However, for the flue gas, after desulfurization treatment, the flue gas contains a lot of heat, and the SCR denitrification catalyst used for denitrification has certain requirements on the temperature of the flue gas. In the existing technology, the cooling method is used to process high-temperature flue gas, which not only causes energy waste, but also increases the cost of flue gas purification treatment

Method used

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  • Coke oven flue gas denitration and desulfurization waste heat utilization integrated device
  • Coke oven flue gas denitration and desulfurization waste heat utilization integrated device
  • Coke oven flue gas denitration and desulfurization waste heat utilization integrated device

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Experimental program
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Effect test

Embodiment 1

[0049] like Figure 1-8 As shown, a coke oven flue gas denitrification and desulfurization waste heat utilization integrated device includes a desulfurization tower 1, a waste heat recovery component 2 connected to the desulfurization tower 1, a primary SCR denitrification component 3 connected to the waste heat recovery component 2, and a primary SCR The secondary SCR denitrification component 4 of the denitrification component 3 , the primary dehumidifier 5 connected to the secondary SCR denitrification component 4 , and the secondary dehumidifier 6 connected to the primary dehumidifier 5 . Both the above components are connected in turn.

[0050] After the coke oven flue gas is desulfurized by the desulfurization tower 1, the heat is recovered by the waste heat recovery component 2, the temperature of the high-temperature flue gas is reduced, and then the denitration treatment is realized by the secondary SCR denitrification component 4 of the first-level SCR denitrificatio...

Embodiment 2

[0061] like Figure 1-8 As shown, in this embodiment, on the basis of the structure of Example 1, in order to achieve denitrification, the above-mentioned flue gas is denitrated through the first-level SCR denitrification component and the second-level SCR denitrification component 4, specifically, the first-level SCR denitrification component 3 and the second-level SCR The denitrification components 4 have the same structure; the primary SCR denitrification component 3 and the secondary SCR denitrification component 4 are connected through a denitrification pipeline. Specifically, the first-level SCR denitrification component 3 and the second-level SCR denitrification component 4 both include a denitrification box 34, and a cavity is arranged inside the denitrification box 34, and several SCR denitration catalyst plates 32 distributed up and down.

[0062] The flue gas enters the cavity of the nitrification box and flows through the catalytic channel in the SCR denitration c...

Embodiment 3

[0072] like Figure 1-8 As shown, in this embodiment, on the basis of the structure of Embodiment 2, in order to realize the drying of flue gas, the secondary SCR denitrification component 4 and the primary dehumidifier 5 are connected through the first dehumidification pipeline. At the same time, in order to further improve the dehumidification effect, The primary dehumidifier 5 communicates with the secondary dehumidifier 6 through a second dehumidification pipeline. The flue gas passes through the primary dehumidifier 5 and the secondary dehumidifier 6 for secondary dehumidification. Wherein, the primary dehumidifier 5 and the secondary dehumidifier 6 are conventional flue gas dehumidifiers disclosed in the prior art.

[0073] The flue gas after dehumidification can effectively avoid the formation of "smoke and rain" because the flue gas is relatively dry.

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Abstract

The invention discloses a coke oven flue gas denitration, desulfurization and waste heat utilization integrated device. The device comprises a desulfurization tower, a waste heat recovery assembly, aprimary SCR denitration assembly, a secondary SCR denitration assembly, a primary dehumidifier and a secondary dehumidifier, which are sequentially communicated, wherein the waste heat recovery assembly comprises a waste heat recovery box body, a cold water cavity is formed in the waste heat recovery box body, and a heat recovery component is fixedly connected into the cold water cavity. Flue gasheat is recovered through the heat recovery component. By the adoption of the device components, recycling of energy is effectively improved, and denitration, desulfurization and purification treatment of flue gas is effectively achieved.

Description

technical field [0001] The invention relates to the field of coke oven flue gas denitrification and desulfurization devices, in particular to an integrated device for utilization of coke oven flue gas denitrification and desulfurization waste heat. Background technique [0002] With the development of industrialized production, the exploitation and utilization of energy is an important prerequisite for industrialized production. At present, my country's coke production capacity exceeds a large one. Based on the extensive mining and application of coal, my country has become the world's coke producer and consumer. [0003] However, in the process of energy utilization, such as coal combustion, a large amount of flue gas will be produced, and the flue gas contains a large amount of sulfur dioxide and nitrogen oxide gases. The above-mentioned sulfur dioxide and nitrogen oxide gases are one of the main factors for the formation of acid rain. It is also the main factor causing a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/90B01D53/26B01D53/56F28D21/00
CPCB01D53/26B01D53/8631B01D53/885B01D53/90B01D2258/0283F28D21/001
Inventor 朱军武蒋峰华攀龙
Owner JIANGSU FENGYE TECH ENVIRONMENTAL PROTECTION GRP CO LTD
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