Dry desulfurization, denitrification and purification integrated device for kiln flue gas

A dry desulfurization and flue gas technology, used in gas treatment, furnaces, furnace components, etc., can solve problems such as inability to reduce industrial production costs, failure of thermal energy, and inability to recycle

Inactive Publication Date: 2020-08-25
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

[0005] However, in the prior art and the improvement of the technical solutions disclosed in the above-mentioned patents, there is a technical defect that the thermal energy in the flue gas is not recycled, resulting in a large amount of thermal energy in the high-temperature flue gas that cannot be recycled, which not only causes energy waste, but also cannot reduce cost of industrial production

Method used

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  • Dry desulfurization, denitrification and purification integrated device for kiln flue gas
  • Dry desulfurization, denitrification and purification integrated device for kiln flue gas
  • Dry desulfurization, denitrification and purification integrated device for kiln flue gas

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Effect test

Embodiment 1

[0049] Such as Figure 1-8 As shown, an integrated device for dry desulfurization, denitrification and purification of flue gas from a kiln includes a desulfurization tower 1 connected with a flue gas heat energy recovery component 2 . The flue gas heat energy recovery component 2 is connected with several dehumidifiers 3 ; the dehumidifier 3 is connected with several SCR denitrification catalytic components 4 , and the SCR denitrification catalytic component 4 is connected with a chimney 5 . Specifically, after the flue gas is desulfurized by the desulfurization tower 1, the heat energy in the flue gas is recovered by the flue gas heat energy recovery component 2, and the flue gas is dried by the dehumidifier 3 to avoid a large amount of "smoke and rain" in the process of discharging the flue gas .

[0050] The specific structure of the flue gas heat energy recovery component 2 is as follows:

[0051] The flue gas heat energy recovery assembly 2 includes a heat energy recover...

Embodiment 2

[0060] Such as Figure 1-8 As shown, in this embodiment, on the basis of the structure of Embodiment 1, the flue gas heat energy recovery assembly 2 is connected with two dehumidifiers 3; the dehumidifiers 3 are connected in series; the dehumidifier 3 is connected with two dehumidifiers connected in series SCR denitrification catalytic component4.

[0061] It is realized that the flue gas after thermal energy recovery is subjected to secondary dehumidification through the dehumidifier 3 , and secondary denitrification treatment through the SCR denitrification catalytic component 4 .

[0062] Among them, the SCR denitration catalytic assembly 4 is a conventional SCR denitration catalytic device disclosed in the prior art, and its main structure includes an SCR denitration catalyst and a housing equipped with an SCR denitration catalyst. Catalytic denitrification to reduce nitrogen oxides in flue gas.

Embodiment 3

[0064] Such as Figure 1-8 As shown, in this embodiment, on the basis of the structure of Embodiment 2, the dehumidifier 3 is designed as the following structure to perform dehumidification.

[0065] The dehumidifier 3 includes a dehumidification shell, and the dehumidification shell has a dehumidification liquid. Specifically, the dehumidification liquid is dehumidified by using, for example, saturated calcium chloride or saturated calcium carbonate solution.

[0066] The dehumidification casing is sealed, and the dehumidification casing is provided with a smoke loosening cage part 31, and the smoke scattering cage part 31 is used to diffuse the flue gas, and the drying effect of the flue gas is improved by diffusing the flue gas.

[0067] The smoke diffuser cage part 31 includes a spiral smoke diffuser pipe 311, and several smoke diffuser spheres 312 are communicated with the spiral smoke diffuser tube 311. Several through holes. Several through holes are opened on the spi...

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Abstract

The invention discloses a dry desulfurization, denitrification and purification integrated device for kiln flue gas. The device comprises a desulfurization tower communicating with a flue gas heat energy recovery assembly, wherein the flue gas heat energy recovery assembly communicates with a plurality of dehumidifiers; the dehumidifiers communicate with a plurality of SCR denitration catalytic assemblies, and the SCR denitration catalytic assemblies communicate with a chimney; the flue gas heat energy recovery assembly comprises a heat energy recovery box body, and a heat energy recovery partis arranged in the heat energy recovery box body; the heat energy recovery part is used for recovering heat energy of high-temperature flue gas, and heat energy recovery is achieved through heat exchange. By adopting the device, high-temperature flue gas exchanges heat with cold water through the heat energy recovery part, and the cold water is discharged from a high-temperature water outlet pipeafter being heated, so heat energy is recycled.

Description

technical field [0001] The invention relates to the field of kiln flue gas purification treatment devices, in particular to an integrated device for dry desulfurization, denitrification and purification of kiln flue gas. Background technique [0002] With the development of industrialized production in our country, 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. In the process of energy utilization, such as coal combustion in kilns, a large amount of flue gas will be produced. 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 that form acid rain. It is also the main factor causing air pollution. [0003] Based on the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/90B01D53/56B01D53/26F27D17/00F28D7/16F28F1/42
CPCB01D53/26B01D53/8631B01D53/90B01D2251/95B01D2258/0283F27D17/004F27D17/008F28D7/16F28F1/424Y02P10/25
Inventor 张程蒋峰朱军武华攀龙
Owner JIANGSU FENGYE TECH ENVIRONMENTAL PROTECTION GRP CO LTD
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