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Novel dry-process cement kiln tail flue gas desulfurization system and desulfurization process thereof

A dry-process cement and desulfurization system technology, applied in separation methods, chemical instruments and methods, waste heat treatment, etc., can solve the problems of non-detection and high emission concentration, and achieve the effects of convenient operation, high desulfurization efficiency and short construction period

Inactive Publication Date: 2015-05-06
ANHUI CONCH DESIGN & RES INST OF BUILDING MATERIALS CO LTD
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  • Abstract
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  • Application Information

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Problems solved by technology

[0004] More than 1,500 new dry process cement production lines across the country are subject to geographical restrictions. Due to the difference in sulfur content in raw materials and fuels, SO 2 The emission concentration is also different. The sulfur content in raw materials and fuels of most production lines is low or does not contain sulfur, and SO in flue gas 2 The emission concentration is lower than 200mg / Nm 3 (10%O 2 ), which is not even detected on SO 2 However, some production lines have high sulfur content in raw materials and fuels, especially in limestone, which leads to SO 2 High emission concentration, some even as high as 1000mg / Nm 3 (10%O 2 )above

Method used

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  • Novel dry-process cement kiln tail flue gas desulfurization system and desulfurization process thereof
  • Novel dry-process cement kiln tail flue gas desulfurization system and desulfurization process thereof
  • Novel dry-process cement kiln tail flue gas desulfurization system and desulfurization process thereof

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Embodiment Construction

[0035] The specific implementation of the present invention will be described in further detail below by describing the embodiments with reference to the accompanying drawings, so as to help those skilled in the art have a more complete, accurate and in-depth understanding of the inventive concepts and technical solutions of the present invention.

[0036] like figure 2 The structure of the present invention expressed is a novel dry-process cement kiln tail gas desulfurization system. The dry-process cement kiln includes a decomposition furnace 6 , a humidifying tower 7 and a raw material mill 8 .

[0037] The new dry-process cement kiln is a rotary kiln 9. The novel dry-process cement kiln system of the present invention also includes a PH boiler 14, a high-temperature fan 18, a buffer bin 19, a confluence box 20, and an electric dust collector 21.

[0038] The invention belongs to cement clinker production line to reduce SO 2 Emission desulfurization technology. This tec...

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Abstract

The invention discloses a novel dry-process cement kiln tail flue gas desulfurization system. A material taking device (1) is connected with an outlet of a decomposing furnace (6); the material taking device (1) is connected with a storage device (3); the storage device (3) is connected with a pulping device (2); and the pulping device (2) is respectively connected with a humidifier tower (7) and a raw mill (8) by virtue of a conveying device (4) and an injection device (5). The invention also discloses a desulfurization process for the system. With the adoption of the technical scheme, the desulfurization efficiency is high, and the desulfurization efficiency is more than 50 percent; the operation is convenient, and the degree of automation is high; the construction period is short, and normal production of the production line is not influenced by most of constructions of the desulfurization system; and moreover, an extra desulfurizing agent does not need to be purchased, and the investment cost and the operating cost are low.

Description

technical field [0001] The invention belongs to the technical field of cement production equipment, and relates to environmental protection technology in cement production. More specifically, the invention relates to a novel dry-process cement kiln tail flue gas desulfurization system. In addition, the invention also relates to the desulfurization process of the system. Background technique [0002] Currently, my country's SO 2 The emissions are more than 20 million t / year, of which the cement industry accounts for 3% to 4%. As we all know, SO 2 It is the main cause of acid rain, and it is also the main component of PM2.5. PM2.5 can form smog and cause respiratory diseases; acid rain seriously pollutes the environment, which can cause yellowing, falling off and even death of trees, reduced crop production, and corrosion of building materials. , the ecological balance of aquatic organisms, etc. The acid rain area has expanded from the southwest region in the 1970s to the v...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/80B01D53/50F27D17/00
Inventor 任勇李乐意汪克春盛赵宝轩红钟李群峰章嗣福刘永涛李志强谢飞傅祖扬吴桂林
Owner ANHUI CONCH DESIGN & RES INST OF BUILDING MATERIALS CO LTD
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