CN1034156C - Flue discharging, desulphurizing and dust precipitating method for boiler - Google Patents

Flue discharging, desulphurizing and dust precipitating method for boiler Download PDF

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Publication number
CN1034156C
CN1034156C CN93103299A CN93103299A CN1034156C CN 1034156 C CN1034156 C CN 1034156C CN 93103299 A CN93103299 A CN 93103299A CN 93103299 A CN93103299 A CN 93103299A CN 1034156 C CN1034156 C CN 1034156C
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China
Prior art keywords
boiler
desulphurizing
sewer
dust
flue
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Expired - Fee Related
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CN93103299A
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Chinese (zh)
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CN1081119A (en
Inventor
章燕谋
陈立勋
杨天亮
王石生
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Xian Jiaotong University
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Xian Jiaotong University
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Priority to CN93103299A priority Critical patent/CN1034156C/en
Publication of CN1081119A publication Critical patent/CN1081119A/en
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Publication of CN1034156C publication Critical patent/CN1034156C/en
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Abstract

The present invention discloses a smoke elimination desulphurization dust removal method for a boiler. Waste sewage of a boiler in the operation process is guided to a cooler by the method, the sewage is conveyed to a desulphurization dust remover when the sewage is cooled to below 100 DEG C, and thus, fog-shaped water drops are mixed with smoke gas. The present invention uses the waste sewage of the boiler in operation to carry out dust removal and desulphurization in the desulphurization dust remover, and has the characteristics of low operation cost and no need of extra energy consumption.

Description

Flue discharging, desulphurizing and dust precipitating method for boiler
The invention belongs to combustion apparatus, combustion method technical field, further belong to a kind of flue discharging, desulphurizing and dust precipitating method for boiler of the removing or the processing of combustion products or combustion residue.
Contain harmful substances such as grit and sulfur oxide in the boiler combustion product, be discharged into contaminated environment in the atmosphere, harmful to people, crops and building etc., therefore must manage to be removed, existing method is that boiler exhaust gas is carried out dedusting and desulfurization respectively, the normal dust collection method that adopts has (dry type or the wet dust removal) of machinery and electric, the method that desulfurization is then mostly adopted neutralization, absorbed, for example with lime or lime stone washing, alkali lye absorption etc., but these sulfur methods are the cost costliness often, the operating cost height, equipment volume is huge, but also can not dedusting.Write " industrial waste gas pollutes control and utilizes ", Chemical Industry Press, 1989 as Tong Zhiquan, Chen Huanqin.Devulcanizer and deduster are adopted in the desulfurization and the dedusting of boiler exhaust gas at present respectively, and each device all has only a function, and deduster can not desulfurization, and devulcanizer can not dedusting, thereby device is complicated, and must add alkaline matter, operating cost height in the devulcanizer.
The object of the present invention is to provide a kind of flue discharging, desulphurizing and dust precipitating method for boiler that utilizes sewer desulfurization in dedusting discarded in the boiler operatiopn.
The present invention imports cooler with boiler discarded sewer in running, treats that sewer is cooled to below 100 ℃, sends in the desulfurizing dust-collector again, mixes with flue gas with vaporific water droplet.
The invention will be further described below in conjunction with accompanying drawing.
Fig. 1 is a schematic diagram of the present invention.
Boiler 1 discarded sewer in running is imported cooler 2 by pipe, rely on cooling medium (water or gas) that sewer is cooled to below 100 ℃, the sewer temperature of cooling depends mainly on the temperature of boiler exhaust gas, when exhaust gas temperature is higher, the cooled temperature of sewer should be lower, cooled sewer is sent in the desulfurizing dust-collector 3, the pressure of dependence sewer self is vaporific water droplet and fully mixes with flue gas, owing to contain certain alkaline matter in the boiler blowdown water, in desulfurizing dust-collector with flue gas in sulfur oxide neutralize, absorption reaction, thereby the sulfur oxide in the removal flue gas.Meanwhile, vaporific water droplet has polymerization to the fine soot particle in the flue gas, makes it to be condensed into the ash of larger particles, is convenient to separated removing in desulfurizing dust-collector, thereby has improved efficiency of dust collection.
Great advantage of the present invention is to utilize sewer discarded in boiler operatiopn in desulfurization Obtain high efficiency flue gas ash removal and desulfurized effect in the deduster, with general smoke duster Compare, consumed energy is identical, but can improve efficiency of dust collection, and simultaneously desulfurization, and The entrained heat of sewer passes to cooling water in cooler after, send into boiler, make This part heat obtains reclaiming, and it is low to have operating cost, need not consume the spy of additional energy The point.

Claims (3)

1, flue discharging, desulphurizing and dust precipitating method for boiler is characterized in that: boiler discarded sewer in running is imported cooler, treat that sewer is cooled to below 100 ℃, send in the desulfurizing dust-collector again, mix with flue gas with vaporific water droplet.
2, flue discharging, desulphurizing and dust precipitating method for boiler as claimed in claim 1 is characterized in that: the temperature that described sewer is cooled in cooler reduces along with the rising of exhaust gas temperature.
3, flue discharging, desulphurizing and dust precipitating method for boiler according to claim 1, it is characterized in that: the vaporific water droplet in the described desulfurizing dust-collector is the pressure that utilizes sewer.
CN93103299A 1993-03-20 1993-03-20 Flue discharging, desulphurizing and dust precipitating method for boiler Expired - Fee Related CN1034156C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN93103299A CN1034156C (en) 1993-03-20 1993-03-20 Flue discharging, desulphurizing and dust precipitating method for boiler

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN93103299A CN1034156C (en) 1993-03-20 1993-03-20 Flue discharging, desulphurizing and dust precipitating method for boiler

Publications (2)

Publication Number Publication Date
CN1081119A CN1081119A (en) 1994-01-26
CN1034156C true CN1034156C (en) 1997-03-05

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN93103299A Expired - Fee Related CN1034156C (en) 1993-03-20 1993-03-20 Flue discharging, desulphurizing and dust precipitating method for boiler

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Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102781553A (en) 2009-12-02 2012-11-14 苏布拉马尼亚姆·库马尔 A process and system for quenching heat, scrubbing, cleaning and neutralizing acidic media present in the flue gas from the firing of fossil fuel
CN104258665A (en) * 2014-10-22 2015-01-07 贵州林亚达林化科技有限责任公司 Water curtain dust removal system

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4000993A (en) * 1975-11-10 1977-01-04 Micron Engineering Inc. Process for scrubbing gas streams
CN1044598A (en) * 1989-11-29 1990-08-15 李耀庭 Boiler flue-gas treater and processing method thereof

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4000993A (en) * 1975-11-10 1977-01-04 Micron Engineering Inc. Process for scrubbing gas streams
CN1044598A (en) * 1989-11-29 1990-08-15 李耀庭 Boiler flue-gas treater and processing method thereof

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CN1081119A (en) 1994-01-26

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