CN109323279A - Burner is directly heated in a kind of denitrating flue gas pipeline - Google Patents

Burner is directly heated in a kind of denitrating flue gas pipeline Download PDF

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Publication number
CN109323279A
CN109323279A CN201811172504.6A CN201811172504A CN109323279A CN 109323279 A CN109323279 A CN 109323279A CN 201811172504 A CN201811172504 A CN 201811172504A CN 109323279 A CN109323279 A CN 109323279A
Authority
CN
China
Prior art keywords
guide pipe
air
air guide
flue
gas
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
CN201811172504.6A
Other languages
Chinese (zh)
Inventor
莫运东
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.)
YUEYANG YUANDONG ENERGY-SAVING EQUIPMENT Co Ltd
Original Assignee
YUEYANG YUANDONG ENERGY-SAVING EQUIPMENT Co Ltd
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 YUEYANG YUANDONG ENERGY-SAVING EQUIPMENT Co Ltd filed Critical YUEYANG YUANDONG ENERGY-SAVING EQUIPMENT Co Ltd
Priority to CN201811172504.6A priority Critical patent/CN109323279A/en
Publication of CN109323279A publication Critical patent/CN109323279A/en
Pending legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation 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
    • B01D53/34Chemical or biological purification of waste gases
    • B01D53/46Removing components of defined structure
    • B01D53/54Nitrogen compounds
    • B01D53/56Nitrogen oxides
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23DBURNERS
    • F23D14/00Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/02Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23DBURNERS
    • F23D14/00Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/46Details, e.g. noise reduction means
    • F23D14/70Baffles or like flow-disturbing devices
    • 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
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2258/00Sources of waste gases
    • B01D2258/06Polluted air

Abstract

The invention discloses directly heat burner in a kind of denitrating flue gas pipeline, the air guide pipe in flue is protruded into including one end, the one end of air guide pipe outside flue is equipped with the air intlet vertical with air guide pipe direction, one end that air guide pipe is located in flue is connected with mixing chamber, air secondary spiral board is equipped between air guide pipe and mixing chamber, the inside of air guide pipe is equipped with spiral board of air, the direction where inside center line along air guide pipe is equipped with combustion gas guide pipe, one end of combustion gas guide pipe is equipped with fuel inlet, the other end of combustion gas guide pipe is connected with combustion gas in turn and shunts gas bag and exhaust gas nozzle, mixing chamber is connect with burning torch and flame detector respectively by two casings, two casings and air guide pipe pass through flange and are fixedly connected with flue outer wall.Beneficial effects of the present invention: the burner has many advantages, such as that compact-sized, easy to operate and high temperature resistant, corrosion-resistant, heat resistanceheat resistant shock resistance is good and is not afraid of flue negative pressure.

Description

Burner is directly heated in a kind of denitrating flue gas pipeline
Technical field
The present invention relates to fume treatment technical field, relate in particular to directly heat combustion in a kind of denitrating flue gas pipeline Burner.
Background technique
Environmental protection is the problem of heat power engineering field is most paid attention to, and the emission problem of nitrogen oxides is even more what national environmental protection worked Emphasis.Reduce primary work of the discharge of nitrogen oxides and greenhouse gases as all trades and professions.Industrial and mining enterprises need denitration process Flue-gas temperature it is lower, (general 280 ~ 380 DEG C) are not reached requirement, so needing to heat flue gas.Existing heating side Formula mainly uses hot-blast stove to heat up flue gas, and this mode needs the high warm flue gas for generating hot-blast stove to pass through pipeline Into low-temperature flue gas to be heated, not only investment is big, and long construction period, thermal loss is big, and has very high requirement to place, limit The use of denitration technology is made.And existing burner cannot be directly installed on because of negative pressure height, temperature height in flue at present Flue gas is heated on flue, heating process is cumbersome, be easy to cause leakage pollution environment.
Summary of the invention
For the problems in the relevant technologies, the present invention proposes to directly heat burner in a kind of denitrating flue gas pipeline, directly Connect and be mounted in flue, can negative-pressure firing and high temperature resistant, can not only greatly improve economic benefit, ring can also be reduced Border pollution, generates significant social benefit.
In order to achieve the above technical purposes, the technical scheme is that it is such:
Burner is directly heated in a kind of denitrating flue gas pipeline, protrudes into the air guide pipe in flue, the sky including one end The one end of gas guide pipe outside flue is equipped with the air intlet vertical with air guide pipe direction, air guide pipe position It is connected in one end in flue with mixing chamber, air secondary spiral board is equipped between the air guide pipe and mixing chamber, it is described The inside of air guide pipe is equipped with spiral board of air, is equipped with along the direction where the inside center line of the air guide pipe One end of combustion gas guide pipe, the combustion gas guide pipe is equipped with fuel inlet, and the other end of the combustion gas guide pipe is connected in turn Combustion gas shunts gas bag and exhaust gas nozzle, and the jet end of the air secondary spiral board and the exhaust gas nozzle is located at same level position It sets, the mixing chamber is connect with burning torch and flame detector respectively by two casings, two described sleeve pipes and air guide pipe It is fixedly connected by flange with flue outer wall.
Further, the outlet of the mixing chamber is provided with stable flame cover.
Further, multiple apertures are offered on the stable flame cover.
Further, the flange of the flue outer wall is equipped with flame-observing hole.
Further, the air guide pipe is equipped with one section of 90 degree of elbow, and 90 degree of elbows are located at air and once revolve Between flowing plate, air secondary spiral board.
Further, the exhaust gas nozzle, air secondary spiral board, mixing chamber are using 310S stainless steel material.
Beneficial effects of the present invention: this burner is directly arranged in inside denitrating flue gas pipeline, is not needed in addition to do and be burnt Room or heating furnace directly burn in low temperature flue flue gas a fluid stream, improve low-temperature flue gas temperature to be heated to SCR denitration reaction temperature Section is spent, enters back into nitrogen oxides in SCR reactor recovered flue gas, energy conservation and environmental protection, while saving equipment cost.
Detailed description of the invention
It in order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, below will be to institute in embodiment Attached drawing to be used is needed to be briefly described, it should be apparent that, the accompanying drawings in the following description is only some implementations of the invention Example, for those of ordinary skill in the art, without creative efforts, can also obtain according to these attached drawings Obtain other attached drawings.
Fig. 1 is the structural representation for directly heating burner in a kind of denitrating flue gas pipeline according to embodiments of the present invention Figure;
Fig. 2 is to directly heat burner in a kind of denitrating flue gas pipeline according to embodiments of the present invention to install in flue Cross-sectional view;
Fig. 3 is the A direction view of Fig. 2.
In figure:
1, combustion gas guide pipe;2, air guide pipe;3, combustion gas shunts gas bag;4, exhaust gas nozzle;5, spiral board of air;6, empty Gas swirl flow plate;7, mixing chamber;8, stable flame cover;9, burning torch;10, flame detector;11, flame-observing hole;12, flange;13, it covers Pipe;14, flue;15, air intlet;16, fuel inlet.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on Embodiment in the present invention, those of ordinary skill in the art's every other embodiment obtained belong to what the present invention protected Range.
As shown in Figure 1-3, directly heating burner in a kind of denitrating flue gas pipeline, protruded into flue 14 including one end Air guide pipe 2, the one end of the air guide pipe 2 outside flue 14 are equipped with the sky vertical with 2 direction of air guide pipe Gas import 15, one end that the air guide pipe 2 is located in flue 14 are connected with mixing chamber 7, the air guide pipe 2 with mix Air secondary spiral board 6 is equipped between room 7, the inside of the air guide pipe 2 is equipped with spiral board 5 of air, along the sky Direction where the inside center line of gas guide pipe 2 is equipped with combustion gas guide pipe 1, and one end of the combustion gas guide pipe 1 is equipped with fuel Import 16, the other end of the combustion gas guide pipe 1 are connected with combustion gas in turn and shunt gas bag 3 and exhaust gas nozzle 4, the air secondary The jet end of spiral board 6 and the exhaust gas nozzle 4 is located at the same horizontal position, and the mixing chamber 7 is distinguished by two casings 13 Connect with burning torch 9 and flame detector 10, installation flame detector 10 can in real time by infrared on-line checking flame situation, two Described sleeve pipe 13 and air guide pipe 2 are fixedly connected by flange 12 with 14 outer wall of flue, the fixed entire burner of support.
In the present embodiment, the outlet of the mixing chamber 7 is provided with stable flame cover 8, offers on the stable flame cover 8 multiple small Hole, burner burn in flue, improve flue-gas temperature, and by the heat transfer of combustion product to low-temperature flue gas, low-temperature flue gas Has the function of cooling protection to mixing chamber 7, stable flame cover 8.
In the present embodiment, the flange 12 of 14 outer wall of flue is equipped with flame-observing hole 11, can directly pass through peephole reality When dynamic knowledge burner combustion case.
In the present embodiment, the air guide pipe 2 is equipped with one section of 90 degree of elbow, and 90 degree of elbows are located at air one Between secondary spiral board 5, air secondary spiral board 6.
In the present embodiment, the exhaust gas nozzle 4, air secondary spiral board 6, mixing chamber 7 are using resistant to high temperature 310S stainless steel material.
In the present embodiment, the combustion gas guide pipe 1 and combustion gas in air guide pipe 2 and air pass through automatic ratio tune Amount of restriction installs temperature point feedback control in low temperature flue, it is ensured that flue-gas temperature is stablized, and overtemperature is prevented.
Above-mentioned technical proposal is further understood for convenience, now its specifically used principle is described in detail:
Fuel enters combustion gas by combustion gas guide pipe 1 and shunts gas bag 3, and air passes through air guide pipe 2, air spiral board 5 It with air secondary spiral board 6, is mixed in mixing chamber 7, gaseous mixture meets 9 open fire after-combustion of burning torch, and combustion product is in stable flame cover 8 It is gradually mixed with by the low-temperature flue gas of aperture, and improves the low-temperature flue gas temperature persistently to circulate.
The above is merely preferred embodiments of the present invention, be not intended to limit the invention, it is all in spirit of the invention and Within principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.

Claims (6)

1. directly heating burner in a kind of denitrating flue gas pipeline, which is characterized in that protruded into flue (14) including one end Air guide pipe (2), the air guide pipe (2) are equipped with and air guide pipe (2) direction in the one end of flue (14) outside Vertical air intlet (15), the air guide pipe (2) is located at one end in flue (14) and is connected with mixing chamber (7), described Air secondary spiral board (6) are equipped between air guide pipe (2) and mixing chamber (7), the inside of the air guide pipe (2) is equipped with Spiral board (5) of air is equipped with combustion gas guide pipe (1) along the direction where the inside center line of the air guide pipe (2), One end of the combustion gas guide pipe (1) is equipped with fuel inlet (16), and the other end of the combustion gas guide pipe (1) is connected with combustion in turn Gas shunts gas bag (3) and exhaust gas nozzle (4), the air secondary spiral board (6) and the jet end of the exhaust gas nozzle (4) are located at The same horizontal position, the mixing chamber (7) are connected with burning torch (9) and flame detector (10) respectively by two casings (13) It connects, two described sleeve pipes (13) and air guide pipe (2) are fixedly connected by flange (12) with flue (14) outer wall.
2. directly heating burner in a kind of denitrating flue gas pipeline according to claim 1, which is characterized in that described mixed The outlet for closing room (7) is provided with stable flame cover (8).
3. directly heating burner in a kind of denitrating flue gas pipeline according to claim 2, which is characterized in that described steady Flame cover offers multiple apertures on (8).
4. directly heating burner in a kind of denitrating flue gas pipeline according to claim 1, which is characterized in that the cigarette The flange (12) of road (14) outer wall is equipped with flame-observing hole (11).
5. directly heating burner in a kind of denitrating flue gas pipeline according to claim 1, which is characterized in that the sky Gas guide pipe (2) is equipped with one section of 90 degree of elbow, and 90 degree of elbows are located at air spiral board (5), an air secondary eddy flow Between plate (6).
6. directly heating burner in a kind of denitrating flue gas pipeline according to claim 1, which is characterized in that the combustion Gas blowout pipe (4), air secondary spiral board (6), mixing chamber (7) are using 310S stainless steel material.
CN201811172504.6A 2018-10-09 2018-10-09 Burner is directly heated in a kind of denitrating flue gas pipeline Pending CN109323279A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201811172504.6A CN109323279A (en) 2018-10-09 2018-10-09 Burner is directly heated in a kind of denitrating flue gas pipeline

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201811172504.6A CN109323279A (en) 2018-10-09 2018-10-09 Burner is directly heated in a kind of denitrating flue gas pipeline

Publications (1)

Publication Number Publication Date
CN109323279A true CN109323279A (en) 2019-02-12

Family

ID=65261637

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201811172504.6A Pending CN109323279A (en) 2018-10-09 2018-10-09 Burner is directly heated in a kind of denitrating flue gas pipeline

Country Status (1)

Country Link
CN (1) CN109323279A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109899784A (en) * 2019-03-06 2019-06-18 北京神科博斯热能工程技术有限公司 A kind of coke oven gas burner

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109899784A (en) * 2019-03-06 2019-06-18 北京神科博斯热能工程技术有限公司 A kind of coke oven gas burner

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