CN107192002A - A kind of wall-hung boiler - Google Patents

A kind of wall-hung boiler Download PDF

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Publication number
CN107192002A
CN107192002A CN201710474739.XA CN201710474739A CN107192002A CN 107192002 A CN107192002 A CN 107192002A CN 201710474739 A CN201710474739 A CN 201710474739A CN 107192002 A CN107192002 A CN 107192002A
Authority
CN
China
Prior art keywords
wall
hung boiler
reactor
tourie
catalyst
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201710474739.XA
Other languages
Chinese (zh)
Inventor
郭瑞堂
刘健
孙晓
刘帅伟
孙鹏
刘树明
李明圆
王舒娴
潘卫国
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shanghai University of Electric Power
University of Shanghai for Science and Technology
Original Assignee
Shanghai University of Electric Power
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shanghai University of Electric Power filed Critical Shanghai University of Electric Power
Priority to CN201710474739.XA priority Critical patent/CN107192002A/en
Publication of CN107192002A publication Critical patent/CN107192002A/en
Pending legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D15/00—Other domestic- or space-heating systems
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/75—Multi-step processes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/86—Catalytic processes
    • B01D53/8621—Removing nitrogen compounds
    • B01D53/8625—Nitrogen oxides
    • B01D53/8631—Processes characterised by a specific device
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/86—Catalytic processes
    • B01D53/88—Handling or mounting catalysts
    • B01D53/885—Devices in general for catalytic purification of waste gases
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J15/00—Arrangements of devices for treating smoke or fumes
    • F23J15/02—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J15/00—Arrangements of devices for treating smoke or fumes
    • F23J15/02—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material
    • F23J15/04—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material using washing fluids
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2251/00—Reactants
    • B01D2251/10—Oxidants
    • B01D2251/102—Oxygen
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2251/00—Reactants
    • B01D2251/30—Alkali metal compounds
    • B01D2251/304—Alkali metal compounds of sodium
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2251/00—Reactants
    • B01D2251/60—Inorganic bases or salts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2258/00—Sources of waste gases
    • B01D2258/02—Other waste gases
    • B01D2258/0283—Flue gases
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2259/00—Type of treatment
    • B01D2259/12—Methods and means for introducing reactants
    • B01D2259/122—Gaseous reactants
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2259/00—Type of treatment
    • B01D2259/12—Methods and means for introducing reactants
    • B01D2259/124—Liquid reactants
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J2215/00—Preventing emissions
    • F23J2215/10—Nitrogen; Compounds thereof
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J2219/00—Treatment devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J2219/00—Treatment devices
    • F23J2219/40—Sorption with wet devices, e.g. scrubbers
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters

Abstract

The present invention relates to a kind of wall-hung boiler, the smoke outlet of the wall-hung boiler is provided with catalyst oxidation reactor, the rear end of the catalyst oxidation reactor is connected by smoke exhaust pipe places absorbing liquid, the outlet of the tourie and atmosphere in the entrance of tourie, the tourie.Compared with prior art, wall-hung boiler of the invention is aoxidized by the way of catalysis oxidation with the condition of flue gas itself in catalyst surface, generation easily absorbed NO2, is added absorbent solution in afterbody, is reached the purpose of emission reduction；And the replacing of catalyst more facilitates.

Description

A kind of wall-hung boiler
Technical field
The present invention relates to heating technology field, and in particular to a kind of wall-hung boiler.
Background technology
At present the winter of China, Qinling Mountains North of Huai River is mainly based on central heating, and no concentrate supplies on the south the Huaihe River of the Qinling Mountains It is warm, but temperature in the winter time is low unlike Qinling Mountains North of Huai River, so expediting the emergence of out combustion gas heating for residential area wall-hung boiler market.2010 Since the sales volume of wall-hung boiler go up year after year, market maintenance 9,000,000.Wall-hung boiler uses natural gas as combustion medium, burning After transfer heat to the air heat-exchange in grounding heat coil tube and wall hanging radiation piece, room, reach the purpose for making to heat up within doors, but NO can be produced during usex, current manufacturer, which generally takes, to be adjusted the ratio of combustion medium and air to reduce NOx, but in flue gas In still there is 50ppm NOx, it is increasingly huge in wall-hung boiler market in the case of, this part of NOxResidence of the meeting to residential quarter The people cause having a strong impact on for body and mind, and the harm caused should not be underestimated.
Patent CN201242258Y discloses a kind of full premixed catalytic combustion wall-hanging furnace, including gas control valve, controller, Main heat exchanger assembly, burner, appendix, controlling transmission line, blender, blower fan, fume extractor, combustion chamber, water pipe, tax control Hair, heating water inlet, heating water out, air inlet, shell, and the burner is the flat pottery that surface scribbles rare earth catalyst Plate burner.I.e. the patent is to set catalyst, the NO that reduction burning is produced in burner internalx.But, through practice, row Certain NO can be carried in the waste gas put unavoidablyx, and a period of time rear catalyst needs replacing, and dismounting is more bothered.
The content of the invention
It is an object of the present invention to overcome the above-mentioned drawbacks of the prior art and provide one kind changes convenient, discharge The wall-hung boiler that flue gas is more cleaned.
The purpose of the present invention can be achieved through the following technical solutions：A kind of wall-hung boiler, the exhanst gas outlet of the wall-hung boiler Place is provided with catalyst oxidation reactor, and the rear end of the catalyst oxidation reactor connects the entrance of tourie by smoke exhaust pipe, described Absorbing liquid, the outlet of the tourie and atmosphere are placed in tourie.
Described catalyst oxidation reactor includes the cellular reactor of cylinder and is arranged on outside cellular reactor The stainless steel casing in portion, middle part and the stainless steel casing of the cellular reactor are welded, the two ends of the cellular reactor Annular slot is formed between stainless steel casing.
Described cellular inside reactor is provided with multiple passages in cellular distribution, and the interior wall loading of each passage is urged Agent.The passage of cellular distribution is prepared to flue gas, and flue gas is when by runner, and inherent gas can enter in catalyst surface Row reaction.
The aperture of the passage is 0.8~1mm, and the aperture can both ensure have sufficiently large surface area to carry out catalyst Load, can be such that flue gas smoothly discharges, pressure drop is not too large again.
It is preferred that, the catalyst is Mn/Ti, and the catalyst can be by the NO for generation of burningxGenerated with oxygen reaction rapidly NO2, and reaction conversion ratio farthest takes out the NO in flue gas close to 100%x。
Described exhanst gas outlet and one end of smoke exhaust pipe are provided with the projection matched respectively with annular slot, during installation, only Need the projection on exhanst gas outlet and smoke exhaust pipe being inserted into annular slot, cellular reactor can just be installed, and When catalyst failure, change also very convenient.
Described absorbing liquid is Na2SO3On the one hand solution, the solution can quickly absorb NO2, on the other hand can adsorb not The carbon particle reacted completely, makes to be emitted into the gas in air and more cleans, and the solution is cheap, changes convenient.
The area of described tourie outlet is more than or equal to the cross-sectional area of the smoke exhaust pipe, and one end of smoke exhaust pipe is inserted in suction Receive in liquid, the gas come out from smoke exhaust pipe is purified in being introduced into absorbing liquid, then export and discharge from tourie, set tourie to go out The area of mouth is more than or equal to the cross-sectional area of the smoke exhaust pipe, can guarantee that tail gas is smoothly discharged, prevents that air pressure is excessive in tourie Cause absorbing liquid suck-back.
Compared with prior art, beneficial effects of the present invention are embodied in following several respects：
(1) wall-hung boiler of the invention is aoxidized by the way of catalysis oxidation with the condition of flue gas itself in catalyst surface, Generation easily absorbed NO2, adds absorbent solution in afterbody, reaches the purpose of emission reduction；
(2) replacing of catalyst more facilitates.
Brief description of the drawings
Fig. 1 is structural representation of the invention；
Fig. 2 is the structural representation of cellular reactor.
Wherein, 1 is wall hanging furnace body, and 2 be catalyst oxidation reactor, and 21 be cellular reactor, and 211 be passage, and 22 are Stainless steel casing, 23 be annular groove, and 3 be tourie, and 4 be smoke exhaust pipe.
Embodiment
Embodiments of the invention are elaborated below, the present embodiment is carried out lower premised on technical solution of the present invention Implement, give detailed embodiment and specific operating process, but protection scope of the present invention is not limited to following implementations Example.
Embodiment 1
A kind of wall-hung boiler, its structure are as shown in figure 1, the smoke outlet of wall hanging furnace body 1 is provided with catalyst oxidation reactor 2, the rear end of catalyst oxidation reactor 2 is connected in the entrance of tourie 4, tourie 4 by smoke exhaust pipe 3 and places absorbing liquid, is absorbed The outlet of tank 4 and atmosphere.
The structure of catalyst oxidation reactor 2 is as shown in Fig. 2 cellular reactor 21 including cylinder and be arranged on honeybee Stainless steel casing 22 outside nest shape reactor 21, middle part and the stainless steel casing 22 of cellular reactor 21 are welded, cellular Annular slot 23 is formed between the two ends of reactor 21 and stainless steel casing 22.The cellular inside of reactor 21 is provided with multiple in honeybee The passage 211 of nest shape distribution, the inwall supported catalyst of each passage 211.The passage 211 of cellular distribution is prepared to flue gas , flue gas is when by runner, and inherent gas can be reacted in catalyst surface.The aperture of passage 211 is 0.9mm, the hole Footpath can both ensure the load for having sufficiently large surface area to carry out catalyst, flue gas can be made smoothly to discharge again, pressure drop is not too large. Catalyst is Mn/Ti, and the catalyst can be by the NO for generation of burningxRapidly NO is generated with oxygen reaction2, and reaction conversion ratio is close 100%, farthest take out the NO in flue gasx。
One end of exhanst gas outlet and smoke exhaust pipe 3 is provided with the projection matched respectively with annular slot 23, during installation, it is only necessary to Projection on exhanst gas outlet and smoke exhaust pipe 3 is inserted into annular slot 23, cellular reactor 21 can just be installed, and When catalyst failure, change also very convenient.Absorbing liquid is Na2SO3On the one hand solution, the solution can quickly absorb NO2, it is another Aspect can adsorb the carbon particle do not reacted completely, make to be emitted into the gas in air and more clean, and the solution price is just Preferably, change convenient.The area that tourie 4 is exported is more than or equal to the cross-sectional area of smoke exhaust pipe 3, and one end of smoke exhaust pipe 3 is inserted in absorption In liquid, the gas come out from smoke exhaust pipe 3 is purified in being introduced into absorbing liquid, is then exported and is discharged from tourie 4, sets tourie 4 The area of outlet is more than or equal to the cross-sectional area of smoke exhaust pipe 3, can guarantee that tail gas is smoothly discharged, prevents that air pressure is excessive in tourie 4 Cause absorbing liquid suck-back.

Claims (8)

1. a kind of wall-hung boiler, it is characterised in that the smoke outlet of the wall-hung boiler is provided with catalyst oxidation reactor, the catalysis oxygen The rear end for changing reactor connects placement absorbing liquid in the entrance of tourie, the tourie by smoke exhaust pipe, the tourie Outlet and atmosphere.
2. a kind of wall-hung boiler according to claim 1, it is characterised in that described catalyst oxidation reactor includes cylinder Cellular reactor and the stainless steel casing that is arranged on outside cellular reactor, the middle part of the cellular reactor with Stainless steel casing is welded, and annular slot is formed between the two ends of the cellular reactor and stainless steel casing.
3. a kind of wall-hung boiler according to claim 2, it is characterised in that described cellular inside reactor is provided with multiple In the passage of cellular distribution, the inwall supported catalyst of each passage.
4. a kind of wall-hung boiler according to claim 3, it is characterised in that the aperture of the passage is 0.8~1mm.
5. a kind of wall-hung boiler according to claim 3, it is characterised in that the catalyst is Mn/Ti.
6. a kind of wall-hung boiler according to claim 2, it is characterised in that described exhanst gas outlet and one end of smoke exhaust pipe are set There is the projection matched respectively with annular slot.
7. a kind of wall-hung boiler according to claim 1, it is characterised in that described absorbing liquid is Na2SO3Solution.
8. a kind of wall-hung boiler according to claim 1, it is characterised in that the area of described tourie outlet is more than or equal to The cross-sectional area of the smoke exhaust pipe.
CN201710474739.XA 2017-06-21 2017-06-21 A kind of wall-hung boiler Pending CN107192002A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710474739.XA CN107192002A (en) 2017-06-21 2017-06-21 A kind of wall-hung boiler

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710474739.XA CN107192002A (en) 2017-06-21 2017-06-21 A kind of wall-hung boiler

Publications (1)

Publication Number Publication Date
CN107192002A true CN107192002A (en) 2017-09-22

Family

ID=59879380

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201710474739.XA Pending CN107192002A (en) 2017-06-21 2017-06-21 A kind of wall-hung boiler

Country Status (1)

Country Link
CN (1) CN107192002A (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101352645A (en) * 2008-08-29 2009-01-28 浙江大学 Flue gas catalytic oxidation denitration technique and catalyst thereof
CN104154548A (en) * 2014-07-31 2014-11-19 佘洪舟 Technique for recycling heat energy of tail gas of gas-fired boiler and purifying nitric oxide
CN206959130U (en) * 2017-06-21 2018-02-02 上海电力学院 A kind of wall-hung boiler

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101352645A (en) * 2008-08-29 2009-01-28 浙江大学 Flue gas catalytic oxidation denitration technique and catalyst thereof
CN104154548A (en) * 2014-07-31 2014-11-19 佘洪舟 Technique for recycling heat energy of tail gas of gas-fired boiler and purifying nitric oxide
CN206959130U (en) * 2017-06-21 2018-02-02 上海电力学院 A kind of wall-hung boiler

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