CN110513701A - A kind of novel spraying device and SNCR denitration system for waste incinerator - Google Patents

A kind of novel spraying device and SNCR denitration system for waste incinerator Download PDF

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Publication number
CN110513701A
CN110513701A CN201910762149.6A CN201910762149A CN110513701A CN 110513701 A CN110513701 A CN 110513701A CN 201910762149 A CN201910762149 A CN 201910762149A CN 110513701 A CN110513701 A CN 110513701A
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China
Prior art keywords
connecting tube
nozzle
gun
incinerator
barral
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Application number
CN201910762149.6A
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Chinese (zh)
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CN110513701B (en
Inventor
周生光
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Shanghai Nanyi Environmental Science & Technology Co Ltd
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Shanghai Nanyi Environmental Science & Technology Co Ltd
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    • 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
    • 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
    • B01D53/74General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/77Liquid phase processes
    • B01D53/78Liquid phase processes with gas-liquid contact
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23GCREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G5/00Incineration of waste; Incinerator constructions; Details, accessories or control therefor
    • F23G5/44Details; Accessories
    • 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
    • F23J15/04Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material using washing fluids
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23JREMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J2215/00Preventing emissions
    • F23J2215/10Nitrogen; Compounds thereof

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Chemical & Material Sciences (AREA)
  • Biomedical Technology (AREA)
  • Analytical Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chimneys And Flues (AREA)
  • Treating Waste Gases (AREA)
  • Incineration Of Waste (AREA)

Abstract

The invention discloses a kind of novel spraying devices and SNCR denitration system for waste incinerator, belong to garbage incinerating system field, including pedestal, the first barral of a gun, first jet and nozzle angle regulating mechanism;The first connecting tube is rotatably connected on pedestal, first jet is mounted in the first connecting tube, and the first connecting tube is horizontally disposed, fluid channel is equipped in pedestal, the both ends of fluid channel are connected to the end of the first barral of a gun, the first connecting tube respectively;Nozzle angle regulating mechanism is rotated for being drivingly connected pipe relative to pedestal;Second nozzle is fixed in first jet, the second connecting tube is fixed in first connecting tube, the second barral of a gun is fixed in first barral of a gun, switching part is fixed in fluid channel, second nozzle is connect with the second connecting tube, second connecting tube and switching part are rotatablely connected, and switching part is connect with the second barral of a gun.The configuration of the present invention is simple, design rationally, can adjust the spray angle of nozzle according to the smoke-gas area change in location of optimal reaction temperature.

Description

A kind of novel spraying device and SNCR denitration system for waste incinerator
Technical field
The present invention relates to garbage incinerating system field, in particular to a kind of novel spraying device for waste incinerator and SNCR denitration system.
Background technique
SNCR system is a kind of " selective non-catalytic reduction denitrogenation " process system, can effectively reduce garbage incinerating power plant The nitrous oxides concentration that waste incineration generates.By spraying to smoke-gas area of the in-furnace temperature between 850 DEG C to 1050 DEG C is burned Urea liquid or ammonium hydroxide are penetrated, urea liquid or ammonium hydroxide and reaction of nitrogen oxides generate the innocuous substances such as N2, H2O at high temperature, To reduce the discharge amount of nitrogen oxides.
DeNOx method is known as the SNCR of reducing agent using ammonia, using urea for reducing agent is NOxOUT method;Ammonium hydroxide side The process of case are as follows: ammonium hydroxide discharging pump-ammonium hydroxide storage tank-ammonium hydroxide supply unit-mixed allocation unit-spray gun-incinerator, meanwhile, Soft water is transported to mixed allocation unit and mixed with ammonium hydroxide by soft water supply unit, and compressed air is connect with spray gun, will be mixed Weak ammonia is taken out of by air-flow;The process of urea scheme are as follows: urea liquid storage tank-urea liquid supply unit-mixing point With unit-spray gun-incinerator, mixed likewise, soft water is transported to mixed allocation unit by soft water supply unit with urea liquid, Compressed air is connect with spray gun, and mixed urea liquid is taken out of by air-flow.
In denitration process, to burn in-furnace temperature between 850 DEG C to 1050 DEG C smoke-gas area injection urea liquid or Person's ammonium hydroxide can obtain better denitration effect.It is general to select 900~950 DEG C of temperature region as denitration reaction efficiency Optimal temperature window.
But in actual production, it is (warm i.e. in incinerator in variation for burning in-furnace temperature in the process of running Degree is distributed in short transverse and is not fixed), therefore, in order to enable urea liquid or ammonium hydroxide always in optimal reaction temperature window Injection, in the prior art, by the way of multilayer spray, in the short transverse of incinerator, (temperature is between 850 DEG C to 1050 DEG C Smoke-gas area fluctuation range in) setting multilayer (at least two layers) spray gun, thus according in the incinerator of spray gun present position Whether temperature devotes oneself to work to control the spray gun of respective layer closer to optimal reaction temperature window, makes urea liquid or ammonium hydroxide The smoke-gas area closer to optimal reaction temperature window can be ejected into.
But the spray gun that above scheme is arranged there is needs is excessive, manufacturing cost is high, and can not be according to incinerator cigarette Gas Temperature Distribution accurately adjusts the shortcomings that spray gun investment position;Simultaneously as needing to carry out spray gun cooling drop under hot environment Temperature, excessive spray gun setting, needs the investment of more cooling airs or coolant liquid, this causes the increase of use cost.
Meanwhile the reducing agent used can not be mixed in advance for two kinds, when needing to spray into incinerator together When, the prior art is usually that two sets of nozzles and corresponding material conveying mechanism is arranged, this is also unfavorable for the control of cost.
Summary of the invention
For spray gun arrangement quantity is more in SNCR denitration system of the existing technology and can not be according to incinerator cigarette Gas Temperature Distribution accurately adjust spray gun investment position and two kinds of material spray sites must scattering device the problem of, mesh of the invention Be a kind of novel spraying device for waste incinerator is provided.
To achieve the above object, the technical solution of the present invention is as follows:
A kind of novel spraying device for waste incinerator is worn including the pedestal that is mounted on incinerator inner wall, end Cross the first barral of a gun of incinerator inner wall and the first jet in incinerator and nozzle angle regulating mechanism;On the pedestal It is rotatably connected to the first connecting tube, the first jet is mounted in first connecting tube, the first jet and described the The connection of one connecting tube, first connecting tube is horizontally disposed, and fluid channel, the both ends of the fluid channel are equipped in the pedestal It is connected to respectively with the end of first barral of a gun, first connecting tube;The nozzle angle regulating mechanism is described for driving Connecting tube is rotated relative to the pedestal;Second nozzle is fixed in the first jet, fixation is set in first connecting tube There is the second connecting tube, the second barral of a gun is fixed in first barral of a gun, switching part is fixed in the fluid channel, it is described Second nozzle is connect with one end of second connecting tube, and the second nozzle is connected to second connecting tube, and described second One end of the other end of connecting tube and the switching part is rotatablely connected, and the other end of the switching part and second barral of a gun connect It connects.
Preferably, the nozzle angle regulating mechanism includes the slave mantle tooth being fixedly mounted in first connecting tube Wheel, the drive shaft being rotatablely connected with the pedestal and the drive bevel gear being fixedly mounted in the drive shaft, the active Bevel gear is meshed with the driven wheel of differential, and the other end of the drive shaft passes through the outer wall of the incinerator.
Another preferred, the nozzle angle regulating mechanism includes the tooth being fixedly mounted in first connecting tube The rack gear take turns, being slidably connected on the pedestal and the push rod being fixedly connected with the rack gear, the gear and the rack gear It is meshed, the other end of the push rod passes through the outer wall of the incinerator.
Preferably, the first jet is Venturi nozzle.
Preferably, the second nozzle is straight hole nozzle or taper hole nozzle.
Preferably, the second nozzle is second fluid nozzle.
The invention also discloses a kind of SNCR denitration systems, fill including the above-mentioned novel spray for waste incinerator It sets.
Preferably, the novel spraying device for waste incinerator has several, and described several are burnt for rubbish The novel spraying device for burning furnace is distributed on the sustained height position of incinerator inner wall.
By adopting the above technical scheme, setting due to pedestal, the first connecting tube, first jet and nozzle angle regulating mechanism It sets, so that by the movement of nozzle angle regulating mechanism to drive the rotation of the first connecting tube, and then make to be mounted on the first connection The pitch angle of first jet on pipe is adjusted, thus make in incinerator that flue-gas temperature is when changing, first jet The solution containing reducing agent sprayed can still fall within the smoke-gas area of optimal reaction temperature window, be arranged from without being layered Nozzle also reduces the dosage of cooling air-flow or water flow while reducing first jet setting quantity;It is identical, due to stream The setting of switching part in body channel, so that the angle of second nozzle can be also adjusted in synchronism when first jet angular adjustment, from And while realizing the synchronous transport of two kinds of materials, two kinds of objects can be realized according to the variation of flue-gas temperature in incinerator Expect the variation of spray angle.
Detailed description of the invention
Fig. 1 is a kind of schematic top plan view of the novel spraying device for waste incinerator in the embodiment of the present invention one;
Fig. 2 is a kind of left view schematic diagram of the novel spraying device for waste incinerator in the embodiment of the present invention one;
Fig. 3 is a kind of schematic side view of the novel spraying device for waste incinerator in the embodiment of the present invention two.
In figure: 1- pedestal, 2- barral of a gun, 3- nozzle, 4- connecting tube, 5- driven wheel of differential, 6- drive shaft, 7- active conical tooth Wheel, 8- gear, 9- rack gear, 10- push rod, 11- fluid channel, 12- ontology, 13- connector, 14- bolt, 15- handle, 16- are burnt Burn furnace, 17- connector, 18- switching part, the second barral of a gun of 21-, 31- second nozzle, the second connecting tube of 41-.
Specific embodiment
Specific embodiments of the present invention will be further explained with reference to the accompanying drawing.It should be noted that for The explanation of these embodiments is used to help understand the present invention, but and does not constitute a limitation of the invention.In addition, disclosed below The each embodiment of the present invention involved in technical characteristic can be combined with each other as long as they do not conflict with each other.
Embodiment one
As shown in Figures 1 and 2, a kind of novel spraying device for waste incinerator, including be mounted in incinerator 16 Pedestal 1, end on wall pass through the first barral of a gun 2 of 16 inner wall of incinerator and the first jet 3 in incinerator 16 and spray Mouth angle adjusting mechanism;
Pedestal 1 is usually connected on the inner wall of incinerator 16 by bolt 14, and the first connecting tube is rotatably connected on pedestal 1 4, first jet 3 is mounted in the first connecting tube 4, the jet stream emission direction through slot of first jet 3 perpendicular to the first connecting tube 4, First jet 3 is connected to the first connecting tube 4, and the first connecting tube 4 is horizontally disposed, and fluid channel 11, fluid channel are equipped in pedestal 1 11 both ends are connected to the end of the first barral of a gun 2, the first connecting tube 4 respectively;Nozzle angle regulating mechanism is for being drivingly connected pipe 4 It is rotated relative to pedestal 1.
In the present embodiment, it is fixed with second nozzle 31 in first jet 3, is fixed with second in the first connecting tube 4 Connecting tube 41 is fixed with the second barral of a gun 21 in first barral of a gun 2, is fixed with switching part 18, second nozzle in fluid channel 11 31 connect with one end of the second connecting tube 41, the connection of second nozzle 31 and the second connecting tube 41, the second connecting tube 41 it is another End and one end of switching part 18 are rotatablely connected, and the other end of switching part 18 is connect with the second barral of a gun 21.
In general, the first barral of a gun 2 is coaxially arranged with the second barral of a gun 21, first jet 3 is coaxially arranged with second nozzle 31, First connecting tube 4 is coaxially arranged with the second connecting tube 41;Between first gun body 2 and the second gun body 21, first jet 3 and second It is fixedly connected by connector 17 between nozzle 31 and between switching part 18 and fluid channel 11, connector 17 is preferably bar Shape is latticed, thus enable material normal through.
In actual use, since the first gun body 2, the second gun body 21 are usually all to pass perpendicularly through incinerator, and connect with first Adapter tube 4, the second connecting tube 41 are vertical, therefore switching part 18 should be arranged to carrying out material into 90 ° of directions foldings of flow direction progress Curved shape, such as 90 ° of bend pipes.
In general, the first connecting tube 4 is rotatably connected on fluid channel 11, sealing ring is set between the two and is sealed, sealing The material of circle is preferably metal or plastic products resistant to high temperature.Correspondingly, also being set between the second connecting tube 41 and switching part 18 Sealing ring sealing is set, the material of the sealing ring is preferably also metal or plastic products resistant to high temperature.
In the present embodiment, nozzle angle regulating mechanism include the driven wheel of differential 5 being fixedly mounted in the first connecting tube 4, The drive shaft 6 being rotatablely connected with pedestal 1 and the drive bevel gear 7 that is fixedly mounted in drive shaft 6, drive bevel gear 7 with from Dynamic bevel gear 5 is meshed, and the other end of drive shaft 6 passes through the outer wall of incinerator for external staff's operation.In general, drive shaft 6 The other end for burning furnace outer wall is provided with handle 15 or is connected with motor (not shown).
In the present embodiment, axis hole compatible with drive shaft 6 is provided on pedestal 1, which is stepped hole for preventing Drive shaft 6 moves axially;In the present embodiment, pedestal 1 includes an ontology 12, and above-mentioned fluid channel 11 is arranged in ontology 12 Interior, which is equipped with connector 13, is used to connect bolt 14 on connector 13, while drive shaft 6 is also rotatably connected on the company On junctor 13;In order to keep stable, ontology 12 is provided with the connector 13 of at least two faces.
In the present embodiment, first jet 3 is Venturi nozzle, for spraying powder material;Second nozzle 31 is straight hole Nozzle or taper hole nozzle, for spraying liquid material;In general, either powder material or liquid material, be by means of Compressed air sprinkling, therefore first jet 3 and second nozzle 31 are two-fluid spray nozzle.
In use, the ammonium hydroxide or urea liquid after dilution pass sequentially through the second barral of a gun 2, switching part together with compressed air 18, the second connecting tube 41, second nozzle 31 spray into incinerator;Powder material is connected by the first barral of a gun 2, pedestal 1, first Pipe 4, first jet 3 spray into incinerator, when flue-gas temperature changes in incinerator, operator in operation handle or Motor drives the rotation of drive shaft 6 (or rotating by temperature change chain control drive shaft 6), and drive bevel gear 7 drives from mantle Gear 5 rotates, and driven wheel of differential 5 drives the rotation of the first connecting tube 4, and the pitch angle of such first jet 3 changes, and makes the One nozzle 3 is directed toward the smoke-gas area of optimal reaction temperature window always;Correspondingly, drive of the second nozzle 31 in first jet 3 Lower passive rotation, because the second connecting tube 41 and switching part 18 are rotation connections, the rotation of second nozzle 31 is not by shadow It rings.
Embodiment two
It is from the difference of embodiment one: nozzle angle regulating mechanism is different with embodiment one, in the present embodiment, such as schemes Shown in 3, nozzle angle regulating mechanism includes the gear 8 (roller gear) being fixedly mounted in the first connecting tube 4, is slidably connected at Rack gear 9 on pedestal 1 and the push rod 10 being fixedly connected with rack gear 9, gear 8 are meshed with rack gear 9, and the other end of push rod 10 is worn Cross the outer wall of incinerator.In general, one end that push rod 10 passes through burning furnace outer wall is connected with handle or straight line driving mechanism, straight line Driving mechanism is electronic screw rod, hydraulic cylinder or cylinder.
In the present embodiment, sliding rail or sliding slot are set on ontology 12, sliding block, above-mentioned company are installed on rack gear 9 Junctor 13 is equipped with perforation compatible with push rod 10.
The invention also discloses a kind of SNCR denitration systems, and as the prior art, SNCR denitration system generally includes to store The holding vessel of urea liquid or ammonium hydroxide, powder material storage tank, the pump of transferring raw material or blower, for diluting raw material Water tank, for preparing or the container of hybrid reaction material (mixer or blender), the sky for generating compressed air Press or air accumulator and corresponding pipeline and valve etc. also typically include control said pump, the control system of valve, In This, the present invention repeat no more SNCR denitration process flow and detailed relevant device.
A kind of SNCR denitration system of the present invention further includes the above-mentioned novel spraying device for waste incinerator, and first Barral of a gun 2 connects compressed air and powdered reagents material, and the second barral of a gun 21 connects compressed air and liquid material, empty by compression The flowing of gas drive corresponding material spray (as needed selection spray liquid, it is powdered or simultaneously using both);Wherein, Novel spraying device in SNCR denitration system of the invention for waste incinerator has several (such as 3,4,5 etc. ), several are distributed in the sustained height position of incinerator inner wall for the novel spraying device of waste incinerator, Such as cylindrical incinerator, several novel spraying devices for being used for waste incinerator are evenly spaced in same circumference On;So set, make incinerator the smoke-gas area of optimal reaction temperature window can obtain everywhere first jet 3 and/ Or the spray of second nozzle 31.
In conjunction with attached drawing, the embodiments of the present invention are described in detail above, but the present invention is not limited to described implementations Mode.For a person skilled in the art, in the case where not departing from the principle of the invention and spirit, to these embodiments A variety of change, modification, replacement and modification are carried out, are still fallen in protection scope of the present invention.

Claims (8)

1. a kind of novel spraying device for waste incinerator, it is characterised in that: including the seat being mounted on incinerator inner wall The first barral of a gun and first jet and nozzle angle regulating mechanism in incinerator that body, end pass through incinerator inner wall; The first connecting tube is rotatably connected on the pedestal, the first jet is mounted in first connecting tube, first spray Mouth is connected to first connecting tube, and first connecting tube is horizontally disposed, and fluid channel, the fluid are equipped in the pedestal The both ends in channel are connected to the end of first barral of a gun, first connecting tube respectively;The nozzle angle regulating mechanism is used It is rotated in the driving connecting tube relative to the pedestal;Second nozzle, first connection are fixed in the first jet It is fixed with the second connecting tube in pipe, the second barral of a gun is fixed in first barral of a gun, is fixed in the fluid channel Switching part, the second nozzle are connect with one end of second connecting tube, and the second nozzle and second connecting tube connect Logical, the other end of second connecting tube and one end of the switching part are rotatablely connected, the other end of the switching part with it is described The connection of second barral of a gun.
2. the novel spraying device according to claim 1 for waste incinerator, it is characterised in that: the nozzle angle Regulating mechanism includes the driven wheel of differential being fixedly mounted in first connecting tube, the drive shaft with pedestal rotation connection And it is fixedly mounted on the drive bevel gear in the drive shaft, the drive bevel gear is meshed with the driven wheel of differential, The other end of the drive shaft passes through the outer wall of the incinerator.
3. the novel spraying device according to claim 1 for waste incinerator, it is characterised in that: the nozzle angle Regulating mechanism include the gear being fixedly mounted in first connecting tube, the rack gear being slidably connected on the pedestal and with The push rod that the rack gear is fixedly connected, the gear are meshed with the rack gear, and the other end of the push rod passes through the burning The outer wall of furnace.
4. the novel spraying device according to claim 1 for waste incinerator, it is characterised in that: the first jet For Venturi nozzle.
5. the novel spraying device according to claim 4 for waste incinerator, it is characterised in that: the second nozzle For straight hole nozzle or taper hole nozzle.
6. the novel spraying device according to claim 5 for waste incinerator, it is characterised in that: the second nozzle For second fluid nozzle.
7. a kind of SNCR denitration system, it is characterised in that: be used for waste incinerator including as claimed in any one of claims 1 to 6 Novel spraying device.
8. SNCR denitration system according to claim 7, it is characterised in that: the novel spray for waste incinerator Device has several, several described novel spraying devices for being used for waste incinerator are distributed in the same of incinerator inner wall On height and position.
CN201910762149.6A 2019-08-19 2019-08-19 A novel spray set and SNCR deNOx systems for waste incinerator Active CN110513701B (en)

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CN110038421A (en) * 2019-05-21 2019-07-23 辽宁远景产学研环保技术有限公司 A kind of Dual-Phrase Distribution of Gas olid can thermometric pressurization solid particle spray gun

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