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Cement kiln tail waste gas colored smoke plume treatment system and method

A technology for cement kiln and kiln tail, which is applied in the field of non-ferrous plume treatment system of kiln tail waste gas of cement kiln, can solve the problems of limited heating range, low temperature, insufficient dry flue gas emission, etc., to solve environmental protection problems and facilitate maintenance. , the effect of completely eliminating visual pollution

Pending Publication Date: 2020-12-08
浙江菲达环保科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this technology has two main deficiencies: the emission of dry flue gas from the cement kiln head is less than 1 / 3 of the exhaust gas emission from the cement kiln tail, and the former often performs waste heat recovery operations, resulting in low temperatures, and the heating range of this patented technology is limited; The patented technology is equivalent to directly discharging the cement kiln tail gas after wet desulfurization, and has no effect of deep pollutant treatment

Method used

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  • Cement kiln tail waste gas colored smoke plume treatment system and method
  • Cement kiln tail waste gas colored smoke plume treatment system and method
  • Cement kiln tail waste gas colored smoke plume treatment system and method

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Experimental program
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Effect test

Embodiment 1

[0038] refer tofigure 1 , a cement kiln kiln exhaust gas colored plume treatment system, comprising a first exhaust fan 101, a second exhaust fan 102, a desulfurization tower 2, a condensation system, a swirl mixer 5 and a waste heat boiler 6, the first exhaust fan 101. The desulfurization tower 2, the condensing system and the swirl mixer 5 are sequentially connected through the kiln tail exhaust gas pipeline A, and the waste heat boiler 6, the second exhaust fan 102 and the swirl mixer 5 are sequentially connected through the kiln head flue gas pipeline B, The cement kiln exhaust gas before desulfurization enters the first exhaust fan 101, the desulfurization tower 2, the condensing system and the swirl mixer 5 through the kiln exhaust pipeline A in sequence, and the dry flue gas from the cement kiln head enters the waste heat through the kiln flue gas pipeline B in sequence The boiler 6, the second exhaust fan 102 and the swirl mixer 5, the outlet of the swirl mixer 5 is con...

Embodiment 2

[0057] refer to figure 1 , this embodiment is a modification based on Embodiment 1, specifically: the heat exchange tubes of the flue condenser 3 in Embodiment 1 are made of fluoroplastics, the diameter of the tube is 10-14 mm, and the wall thickness is 1 mm. U-shaped arrangement; the flue condenser 3 in this embodiment can be replaced by a titanium tube with a diameter of not less than 25mm and a wall thickness of 1-1.5mm. The heat exchange tubes are arranged in an S-shaped arrangement, and metal finned tubes can also be used Instead, the pipe diameter is not less than 38mm, the wall thickness is 3-5mm, and the heat exchange tubes are arranged in an S shape.

[0058] The specific work flow of this embodiment is consistent with that of Embodiment 1.

Embodiment 3

[0060] refer to figure 2 , this embodiment is a change based on embodiment 1, specifically: the flue condenser 3 in embodiment 1 is a partitioned wall heat exchanger, and this embodiment is replaced by a spray tower 11, and embodiment 1 is cancelled. The flue demister 4 in the present embodiment has its own demister on the top floor of the spray tower 11.

[0061] Specifically, the condensing system includes a cooling water pump 8 and a spray tower 11. The top of the desulfurization tower 2 is connected to the bottom of the spray tower 11 through the kiln tail waste gas pipeline A, and the top of the spray tower 11 is connected to the bottom of the spray tower 11 through the kiln tail. The exhaust gas pipeline A is connected to the swirl mixer 5; the spray layer of the spray tower 11 is provided with a cold medium inlet, connected to the water inlet side of the cooling water pipeline D, and a cooling water pump 8 is set, and the spray tower 11 The bottom of the cooling mediu...

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Abstract

The invention provides a cement kiln tail waste gas colored smoke plume treatment system and method. The system comprises a first exhaust fan, a second exhaust fan, a desulfurization tower, a condensation system, a cyclone mixer and a waste heat boiler. Cement kiln tail waste gas before desulfurization sequentially enters a first exhaust fan, a desulfurization tower, a condensation system and a cyclone mixer through a kiln tail waste gas pipeline A, and cement kiln head dry flue gas sequentially enters a waste heat boiler, a second exhaust fan and the cyclone mixer through a kiln head flue gaspipeline B; an outlet of the cyclone mixer is connected with a chimney through a mixed gas pipeline C; a first flow temperature sensing device is further arranged at an inlet of the rotational flow mixer of the kiln tail waste gas pipeline A, a second flow temperature sensing device is further arranged at an outlet of the rotational flow mixer of the mixed gas pipeline C, and the relative humidity of mixed exhaust smoke is automatically controlled to be lower than the set humidity. According to the invention, deep condensation treatment of pollutants is realized, thorough elimination of visual pollution is also realized, the system is economic, reliable, intelligent and efficient, and the environmental protection problem is solved.

Description

【Technical field】 [0001] The invention relates to the technical field of purification of colored plume in the building material industry, in particular to a system and method for treating colored plume of cement kiln exhaust gas. 【Background technique】 [0002] In the building materials industry, the low-temperature hot exhaust gas discharged by the desulfurization process at the end of the cement kiln often contains strong white smoke, causing serious thermal and visual pollution, affecting the corporate image and even destroying the urban landscape. In our country, this phenomenon is more serious as we go to the north and the colder the region. At the same time, in the exhausted flue gas, in addition to recoverable gaseous water, there is also a large amount of fine dust, SO 2 , SO 3 , NOx, etc., the environmental protection problem is serious. [0003] In recent years, the government and society have become more and more stringent on energy conservation, emission reduc...

Claims

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Application Information

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IPC IPC(8): B01D53/00B01D53/50B01D53/80F28B3/04F28B9/08
CPCB01D53/002B01D53/502B01D53/504B01D53/80B01D2258/0233B01D2258/0283F28B3/04F28B9/08
Inventor 王淦孟银灿陈招妹崔盈刘含笑沈敏超李春杜依倩冯国华何宁
Owner 浙江菲达环保科技股份有限公司
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