Cement kiln flue gas SDS dry desulfurization and low-dust SCR denitration purification device and process

A dry desulfurization and purification device technology, which is applied in separation methods, chemical instruments and methods, and separation of dispersed particles, to achieve the effects of reducing operation and maintenance costs, maximizing activity and service life, and smoothing the inner diameter

Pending Publication Date: 2019-05-10
ANHUI WEIDA ENVIRONMENTAL PROTECTION TECH
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Problems solved by technology

[0004] In order to solve the shortcomings of the existing cement kiln flue gas treatment methods, the present invention discloses a cement kiln flue gas SDS dry desulfurization and low-dust SCR denitrification purification device and process

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  • Cement kiln flue gas SDS dry desulfurization and low-dust SCR denitration purification device and process

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Embodiment Construction

[0023] In order to illustrate the specific implementation steps of the present invention more vividly, the following further description will be made in conjunction with the accompanying drawings.

[0024] Referring to the accompanying drawings, a cement kiln flue gas SDS dry desulfurization and low-dust SCR denitrification purification device includes a desulfurizer mill 3, a desulfurizer powder bin 4, a Roots blower 5, a desulfurizer dosing device 6, and a GGH changer. Heater 9, low-dust SCR denitrification reactor 10, the GGH heat exchanger 9 is a rotary heat exchanger, and the heat exchange elements of the rotary heat exchanger have high heat transfer performance, corrosion resistance, and are not easy to block ash . A desulfurizing agent dosing device 6 is installed between the outlet of the waste heat boiler 2 at the end of the cement kiln and the high-temperature fan 7. The desulfurizing agent dosing device 6 is connected to the desulfurizing agent grinding and conveyin...

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Abstract

The invention relates to a cement kiln flue gas SDS dry desulfurization and low-dust SCR denitration purification device, which comprises a desulfurizing agent grinding and conveying system, wherein the desulfurizing agent grinding and conveying system comprises a desulfurizing agent pulverizer, a desulfurizing agent powder bin and a Roots blower which are sequentially arranged; a waste heat boiler is arranged at the kiln tail of a cement kiln; a desulfurizing agent feeding device is arranged between an outlet of the waste heat boiler and a high-temperature blower; the desulfurizing agent feeding device is connected with the desulfurizing agent pulverizer of the desulfurizing agent grinding and conveying system; the output end of the high-temperature blower is communicated with a raw material mill; the raw material mill is communicated with a dust remover; a flue gas outlet of the dust remover is communicated with a GGH heat exchanger; and a raw flue gas outlet of the GGH heat exchanger to an outlet of the low-dust SCR denitration reactor sequentially comprises an oil-gas heat exchanger, an ammonia spraying grid, a static mixer, a medium-low temperature SCR catalyst layer, a catalyst reservation layer and a flue gas flow equalizer from bottom to top.

Description

technical field [0001] The invention belongs to the field of collaborative and efficient control of multi-pollutants in cement kiln flue gas, and specifically relates to a cement kiln flue gas SDS dry desulfurization and low-dust SCR denitrification purification device and process. Background technique [0002] In recent years, with the sustained and rapid development of my country's industrialization, particulate matter, SO 2 The problem of ozone and fine particle pollution caused by pollutants such as nitrogen oxides and nitrogen oxides has become increasingly prominent, seriously threatening the physical and mental health of the people; pollution control is urgent. At present, the in-depth treatment of cement kiln flue gas has been officially mentioned on the daily agenda. Since July 1, 2015, existing enterprises have begun to strictly implement GB4915-2013 "Emission Standards for Air Pollutants in the Cement Industry", requiring existing and newly built cement Enterpri...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/75B01D53/83B01D53/86B01D53/50B01D53/56B01D53/90
Inventor 吴昊黄乃金解彬
Owner ANHUI WEIDA ENVIRONMENTAL PROTECTION TECH
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