CN105841178A - White mist removing heat exchanger used for desulfurization system - Google Patents

White mist removing heat exchanger used for desulfurization system Download PDF

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Publication number
CN105841178A
CN105841178A CN201610295238.0A CN201610295238A CN105841178A CN 105841178 A CN105841178 A CN 105841178A CN 201610295238 A CN201610295238 A CN 201610295238A CN 105841178 A CN105841178 A CN 105841178A
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China
Prior art keywords
heat exchanger
pipeline
cooling
tube
air inlet
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Application number
CN201610295238.0A
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Chinese (zh)
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CN105841178B (en
Inventor
李延平
刘兴
束海涛
王少云
汤峰
汤一峰
徐文龙
黄海波
朱瑞贺
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Nanjing Xuzheng Engineering Technology Co., Ltd.
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Shandong Dai Rong Energy-Conserving And Environment-Protective Science And Technology Ltd
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Priority to CN201610295238.0A priority Critical patent/CN105841178B/en
Publication of CN105841178A publication Critical patent/CN105841178A/en
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Publication of CN105841178B publication Critical patent/CN105841178B/en
Expired - Fee Related legal-status Critical Current
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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23JREMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J15/00Arrangements of devices for treating smoke or fumes
    • F23J15/02Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23JREMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J15/00Arrangements of devices for treating smoke or fumes
    • F23J15/08Arrangements of devices for treating smoke or fumes of heaters

Abstract

The invention discloses a white mist removing heat exchanger used for a desulfurization system. By means of the white mist removing heat exchanger used for the desulfurization system, the white mist problem is completely solved. The white mist removing heat exchanger comprises a primary cooling pipeline, a secondary cooling pipeline and a heating pipeline which are connected in sequence. The secondary cooling pipeline is provided with cooling fins. A drainage device is further arranged at the joint of the secondary cooling pipeline and the heating pipeline. The white mist removing heat exchanger further comprises a flue type heat exchanger body and a composite phase change heat exchanger body. An air inlet of an outer pipe of the flue type heat exchanger body is connected with the heating pipeline, and an air outlet of the outer pipe of the flue type heat exchanger body communicates with an air inlet of a condensation section of the composite phase change heat exchanger body through a pipeline. An air inlet of an inner pipe of the flue type heat exchanger body communicates with an air outlet of an evaporation section of the composite phase change heat exchanger body through a pipeline.

Description

A kind of for desulphurization system except white haze heat exchanger
Technical field
The present invention relates to flue gas heat-exchange unit field, particularly relate to a kind of for desulphurization system except white haze heat exchanger.
Background technology
Along with becoming increasingly conspicuous of global environmental problems, " 12 " planning proposes, and China SO2 to be realized discharges minimizing 8%, for the requirement of country, the active response country of enterprise of high energy consumption and maximum discharge calls, upper desulfurizer carries out desulfurization, and owing to can spray into substantial amounts of water in desulfurization process, therefore flue-gas temperature is low, increase plus water content, making flue gas can not obtain effective lifting, the neat stress part in discharge process with saturation water has been condensed into drop, is formed about white haze phenomenon at chimney.
Use the mode that GGH is set to discharge after utilizing the heat of former flue gas that neat stress is heated up for a lot of enterprise of these phenomenons;But owing to cold side and the hot side of GGH are only separated by orifice plate, being connected by between tube bank and orifice plate is tightly connected (back seals or the sealing means of other forms), owing to the tube expansion of both sides is different, cause the phenomenon of the cold and hot side string wind of GGH, add the load of blower fan, in view of dewpoint corrosion problem, GGH uses anti-corrosion material, but the fluctuation for flue-gas temperature, and aqueous high factor in flue gas, the operational temperature curve causing heat exchanger tube often changes, and the moisture in flue gas does not separates out, heat exchanger tube is often corroded, therefore fault rate is the highest, cannot fundamentally solve white haze problem.
Summary of the invention
The invention provides a kind of for desulphurization system except white haze heat exchanger, the method using segment design, utilize unitized exchanger that neat stress is first lowered the temperature, heat up again after separating out moisture, thoroughly solve white haze problem.
For reaching above-mentioned purpose, the scheme that the present invention takes is: a kind of for desulphurization system except white haze heat exchanger, including the one-level cooling pipeline being sequentially connected with, two grades of cooling pipelines and intensification pipeline, one-level cooling pipeline is connected with desulfurizing tower outlet, does not set Insulation, in order to cooling, it is provided with fin on described two grades of cooling pipelines, make flue gas quickly cool down, two grades of cooling pipelines are additionally provided with drainage arrangement with intensification pipeline junction, the moisture that flue gas cooling separates out is discharged;Also include chimney flue type heat exchanger and complex phase-change heat exchanger, the air inlet of described chimney flue type heat exchanger outer tube is connected with intensification pipeline, the air inlet of the gas outlet of outer tube and complex phase-change heat exchanger condensation segment passes through pipeline communication by pipeline communication, the air inlet of described chimney flue type inner tube of heat exchanger and the gas outlet of complex phase-change heat exchanger evaporator section.
As optimization, connected by pipeline between condensation segment and the evaporator section of described complex phase-change heat exchanger and have drum, drum to be provided with regulator, in order to control steam pressure in the pipe of evaporator section, the tube wall temperature of evaporator section is controlled on dew point corrosion temperature.
As optimization, described chimney flue type inner tube of heat exchanger is provided with fin, for augmentation of heat transfer.
The invention has the beneficial effects as follows: the cooling of former flue gas and the intensification of neat stress realize according to dew point corrosion temperature substep, use different version according to temperature characterisitic, the most reasonable;Using chimney flue type heat exchanger, take full advantage of the trend of flue, more smooth and easy in flow process, the process of Anticorrosion is the easiest;Neat stress is first lowered the temperature and is heated up afterwards, separate out the most of mechanical water in flue gas in this way, solve white haze phenomenon thoroughly, the intensification section of neat stress and the temperature descending section of former flue gas use composite phase-change system, controlled tubulation wall temperature, anticorrosion and accumulatingdust, the cooling of neat stress high temperature section simultaneously and the intensification of low-temperature zone have employed independent equipment, it is to avoid the problem sealing the cold and hot side string wind that the restriction of structure is brought in GGH.
Accompanying drawing explanation
Fig. 1 is present configuration schematic flow sheet.
Detailed description of the invention
Below in conjunction with the accompanying drawings, technical scheme is clearly and completely described.
A kind of for desulphurization system except white haze heat exchanger, including one-level cooling 1, the two grades of cooling pipelines 3 of pipeline being sequentially connected with and intensification pipeline 4, being provided with fin 2 on two grades of cooling pipelines 3, on two grades of cooling pipelines, the junction with intensification pipeline 4 is additionally provided with drainage arrangement 11;Also include chimney flue type heat exchanger and complex phase-change heat exchanger, the air inlet of chimney flue type heat exchanger outer tube 5 is connected with intensification pipeline 4, the air inlet of the gas outlet of outer tube 5 and complex phase-change heat exchanger condensation segment 6 passes through pipeline communication, the air inlet of chimney flue type inner tube of heat exchanger 10 passes through pipeline communication with the gas outlet of complex phase-change heat exchanger evaporator section 8, and inner tube 10 is provided with the fin 9 for augmentation of heat transfer.
Connected by pipeline between condensation segment 6 and the evaporator section 8 of complex phase-change heat exchanger and have drum 7, drum 7 is provided with regulator, so that controlling steam pressure in the pipe of evaporator section 8, the tube wall temperature of evaporator section 8 is controlled on dew point corrosion temperature, it is to avoid dew point corrosion phenomenon occurs.
This new type heat exchanger divides former flue gas cool-down and neat stress intensification designing two portions, configures all in accordance with its dew point corrosion temperature heat exchanging equipment.The cooling of former flue gas is divided into high-temperature part cooling and low temperature partial warm down, wherein high-temperature part cooling is carried out in complex phase-change heat exchanger evaporator section 8, this stage temperature drop 20 DEG C ~ 25 DEG C, low temperature partial warm down is carried out by the inner tube 10 that former flue gas is passed through chimney flue type heat exchanger, this stage temperature is by 5 DEG C ~ 8 DEG C, and the former flue gas after two benches is lowered the temperature enters follow-up system.
Before neat stress heats up, first cooling processes, neat stress flows out from desulfurizing tower, first pass through and lower the temperature in one-level cooling pipeline, two grades of cooling pipelines, temperature drop 3 DEG C ~ 5 DEG C, the mechanical water that cooling separates out is discharged by drainage arrangement 11, neat stress after cooling enters the outer tube 5 of chimney flue type heat exchanger through intensification pipeline 4, the temperature utilizing former flue gas once heats up, temperature rise about 5 DEG C, and the condensation segment subsequently into complex phase-change heat exchanger carries out secondary temperature elevation, flue-gas temperature rises to about 80 DEG C, by fume emission.
The above is only the preferred embodiment of the present invention; protection scope of the present invention is not limited merely to above-described embodiment; all technical schemes belonged under thinking of the present invention belong to protection scope of the present invention; should be understood that; for those skilled in the art; some improvements and modifications without departing from the principles of the present invention, also should be regarded as protection scope of the present invention.

Claims (3)

1. one kind for desulphurization system except white haze heat exchanger, it is characterized in that: include the one-level cooling pipeline being sequentially connected with, two grades of cooling pipelines and intensification pipeline, it is provided with fin on described two grades of cooling pipelines, two grades of cooling pipelines are additionally provided with drainage arrangement with intensification pipeline junction;Also include chimney flue type heat exchanger and complex phase-change heat exchanger, the air inlet of described chimney flue type heat exchanger outer tube is connected with intensification pipeline, the air inlet of the gas outlet of outer tube and complex phase-change heat exchanger condensation segment passes through pipeline communication by pipeline communication, the air inlet of described chimney flue type inner tube of heat exchanger and the gas outlet of complex phase-change heat exchanger evaporator section.
A kind of for desulphurization system except white haze heat exchanger, it is characterised in that: between condensation segment and the evaporator section of described complex phase-change heat exchanger by pipeline connect have drum, described drum to be provided with regulator.
A kind of for desulphurization system except white haze heat exchanger, it is characterised in that: be provided with fin in described chimney flue type inner tube of heat exchanger.
CN201610295238.0A 2016-05-06 2016-05-06 It is a kind of to remove white haze heat exchanger for desulphurization system Expired - Fee Related CN105841178B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201610295238.0A CN105841178B (en) 2016-05-06 2016-05-06 It is a kind of to remove white haze heat exchanger for desulphurization system

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Application Number Priority Date Filing Date Title
CN201610295238.0A CN105841178B (en) 2016-05-06 2016-05-06 It is a kind of to remove white haze heat exchanger for desulphurization system

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CN105841178A true CN105841178A (en) 2016-08-10
CN105841178B CN105841178B (en) 2018-10-19

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5445673A (en) * 1977-09-19 1979-04-11 Kobe Steel Ltd Waste gas treatment method
CN102058994A (en) * 2010-12-08 2011-05-18 东南大学 Device and method for condensing, drying and heating flue gas
CN102500199A (en) * 2011-11-10 2012-06-20 南京圣诺热管有限公司 Flue gas dehydrating and reheating method and device
CN104235864A (en) * 2013-06-13 2014-12-24 烟台龙源电力技术股份有限公司 Flue gas moisture recovery system and method
CN204694131U (en) * 2015-05-05 2015-10-07 北京海淀中京工程设计软件技术有限公司 A kind of complex phase-change heat exchanger
CN205007792U (en) * 2015-08-25 2016-02-03 贺方昀 Wet flue gas desulfurization flue gas processing mechanism
CN205560809U (en) * 2016-05-06 2016-09-07 山东岱荣节能环保科技有限公司 A remove white fog heat exchanger for desulfurization system

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5445673A (en) * 1977-09-19 1979-04-11 Kobe Steel Ltd Waste gas treatment method
CN102058994A (en) * 2010-12-08 2011-05-18 东南大学 Device and method for condensing, drying and heating flue gas
CN102500199A (en) * 2011-11-10 2012-06-20 南京圣诺热管有限公司 Flue gas dehydrating and reheating method and device
CN104235864A (en) * 2013-06-13 2014-12-24 烟台龙源电力技术股份有限公司 Flue gas moisture recovery system and method
CN204694131U (en) * 2015-05-05 2015-10-07 北京海淀中京工程设计软件技术有限公司 A kind of complex phase-change heat exchanger
CN205007792U (en) * 2015-08-25 2016-02-03 贺方昀 Wet flue gas desulfurization flue gas processing mechanism
CN205560809U (en) * 2016-05-06 2016-09-07 山东岱荣节能环保科技有限公司 A remove white fog heat exchanger for desulfurization system

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Effective date of registration: 20190411

Address after: 210031 Room 201, 14 Building, Headquarters Business Plaza, No. 5 Puzhu North Road, Jiangbei New District, Nanjing City, Jiangsu Province

Patentee after: Nanjing Xuzheng Engineering Technology Co., Ltd.

Address before: 271100 No. 58 Shuangyuan Street, Lixin Town Industrial Park, Laiwu City, Shandong Province

Patentee before: Shandong Dai Rong energy-conserving and environment-protective Science and Technology Ltd.

Effective date of registration: 20190411

Address after: 210031 Room 201, 14 Building, Headquarters Business Plaza, No. 5 Puzhu North Road, Jiangbei New District, Nanjing City, Jiangsu Province

Patentee after: Nanjing Xuzheng Engineering Technology Co., Ltd.

Address before: 271100 No. 58 Shuangyuan Street, Lixin Town Industrial Park, Laiwu City, Shandong Province

Patentee before: Shandong Dai Rong energy-conserving and environment-protective Science and Technology Ltd.

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