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Chimney for eliminating wet method desulfurization white smoke

A wet desulfurization and chimney technology, applied in the field of flue gas whitening chimneys, can solve the problems of large project investment and sharp increase of total flue gas volume, and achieve the effect of small renovation works

Pending Publication Date: 2017-06-20
LUOYANG RUICHANG PETROCHEM EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the mixing of some hot air in this method, the total amount of flue gas discharged through the chimney increases sharply, and the chimney often needs to be redesigned and thickened. For some renovation projects, the engineering investment is large

Method used

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  • Chimney for eliminating wet method desulfurization white smoke
  • Chimney for eliminating wet method desulfurization white smoke
  • Chimney for eliminating wet method desulfurization white smoke

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Such as image 3 and Figure 4 As shown, a chimney for eliminating wet desulfurization white smoke is provided with a chimney jacket 12 on the top of the chimney body 8, and the annular interlayer of the chimney jacket 12 is a hot air outlet channel, and the top of the annular interlayer is open for hot air. The air outlet is closed at the bottom and communicates with the hot air main pipe 10 through the hot air branch pipe 11 , and the hot air branch pipe 11 is evenly arranged around the chimney body 8 .

[0034] In the wet desulfurization process, the flue gas generated by the combustion of the boiler or other heating device 1 passes through the denitrification tower 2 to remove nitrogen oxides, then passes through the air preheater 3 for cooling and cooling, and then removes dust in the electrostatic precipitator 4, cooling and dust removal The final flue gas is desulfurized in the wet desulfurization tower 5, and the temperature of the wet flue gas after desulfuriz...

Embodiment 2

[0036] Such as Figure 5 and Figure 6 As shown, a chimney for eliminating white smoke from wet desulfurization, hot air branch pipes 11 are evenly arranged around the top of the chimney as hot air outlet channels, the bottom of the hot air branch pipes 11 communicates with the hot air main pipe 10, and the hot air passes through the hot air The branch pipe 11 is directly discharged into the atmosphere, and is contacted and mixed with the wet flue gas discharged from the chimney body, and wrapped on the surface of the wet flue gas to achieve the purpose of eliminating white smoke and chimney rain.

[0037] The hot air entering the hot air main pipeline 10 in this embodiment can be produced by other processes different from those in Embodiment 1, such as cold air and high-temperature flue gas heat exchange before desulfurization, and the cold air is directly generated by electric heating , or hot air generated by other methods such as cold air and steam heat exchange;

[0038...

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Abstract

The invention provides a chimney for eliminating wet method desulfurization white smoke. The chimney comprises a chimney body; a wet flue gas discharging opening surrounding the top of the chimney body is provided with a hot air outlet channel for exhausting air upwards so that the hot air exhausted out of the hot air outlet channel can wrap the outer layer of wet flue gas air flow exhausted out of the wet flue gas discharging opening, the lower portion of the hot air outlet channel communicates with a hot air main pipeline, and the hot air main pipeline is connected with a heat source. Compared with a traditional method, the chimney has the advantages of being low in energy consumption, small in reengineering work amount investment, simple and easy to operate and reliable in effect on the aspect of eliminating emitted white smoke and stack rain of wet method desulfurization flue gas.

Description

technical field [0001] The invention relates to a flue gas whitening device after wet desulfurization, in particular to a flue gas whitening chimney for wet desulfurization. Background technique [0002] Wet desulfurization process is usually used in the post-combustion heating process of electric power, petrochemical, waste incineration and other industries, that is, the flue gas from boilers, heating furnaces, incinerators, etc. must be desulfurized before it can enter the chimney and be discharged to In the atmospheric environment. The flue gas after wet desulfurization, on the one hand, the temperature dropped sharply, from about 110°C before desulfurization to about 50°C after desulfurization, on the other hand, the water content of flue gas after desulfurization also increased sharply, basically reaching saturation and containing Lots of small droplets. Such wet flue gas is directly discharged into the atmosphere through a traditional chimney, and when it meets the a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23J11/00F23J15/02F23J15/08B01D53/78B01D53/48
CPCB01D53/48B01D53/78F23J11/00F23J15/02F23J15/08F23J2213/10F23J2215/10B01D2258/0283
Inventor 邵松万大阳吕凤王弯弯邵国辉
Owner LUOYANG RUICHANG PETROCHEM EQUIP
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