CN106423679A - Grid injection system for flue gas denitrification - Google Patents
Grid injection system for flue gas denitrification Download PDFInfo
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- CN106423679A CN106423679A CN201611078869.3A CN201611078869A CN106423679A CN 106423679 A CN106423679 A CN 106423679A CN 201611078869 A CN201611078869 A CN 201611078869A CN 106423679 A CN106423679 A CN 106423679A
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- Prior art keywords
- spray gun
- jacket pipe
- flue gas
- lance
- spraying system
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Classifications
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- 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
- B01D53/46—Removing components of defined structure
- B01D53/54—Nitrogen compounds
- B01D53/56—Nitrogen oxides
-
- 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
- B01D53/77—Liquid phase processes
- B01D53/79—Injecting reactants
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
- B05B1/005—Nozzles or other outlets specially adapted for discharging one or more gases
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
- B05B15/60—Arrangements for mounting, supporting or holding spraying apparatus
- B05B15/62—Arrangements for supporting spraying apparatus, e.g. suction cups
- B05B15/628—Arrangements for supporting spraying apparatus, e.g. suction cups of variable length
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
- B05B7/02—Spray pistols; Apparatus for discharge
- B05B7/04—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge
- B05B7/0416—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge with arrangements for mixing one gas and one liquid
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/20—Reductants
- B01D2251/206—Ammonium compounds
- B01D2251/2062—Ammonia
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/20—Reductants
- B01D2251/206—Ammonium compounds
- B01D2251/2067—Urea
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Treating Waste Gases (AREA)
Abstract
The invention discloses a grid injection system for flue gas denitrification. The grid injection system for flue gas denitrification comprises jacketed pipes (2) and spray guns (3), wherein the jacketed pipes (2) are mounted on a furnace wall (1) of a boiler; each spray gun (3) penetrates into each jacketed pipe (2) and stretches into a hearth (4) of the boiler; each spray gun (3) comprises a spray gun head (31) and a spray gun pipe (32); a compressed air inlet (33) and a reducing agent inlet (34) are formed in each spray gun head (31); a plurality of jacketed pipes (2) are mounted at different height positions of the furnace wall (1); the spray gun (3) is mounted in each jacketed pipe (2); each spray gun pipe (32) stretches into the hearth (4) of the boiler; and a plurality of nozzles (35) are arranged on the spray gun pipes (32) along the radial direction and the axial direction of the spray gun pipes (32). The grid injection system has the advantages of wide injection coverage area and high denitrification efficiency.
Description
Technical field
The present invention relates to gas denitrifying technology field, and in particular to a kind of grid spraying system for denitrating flue gas.
Background technology
SNCR (SNCR) denitrating technique is universally acknowledged high-temperature flue gas denitration mature technology, in recent years from
External introducing is domestic, in boiler of power plant, has been widely used in the high temperature smoke denitrating engineering such as cement plant.Its key problem in technology be in pot
The ad-hoc location installing spray gun of stove (kiln) furnace wall, denitrification reducing agent is sprayed into burner hearth and nitrogen oxides in effluent (NO and NO2)
SNCR reaction is carried out, by NO and NO2Change into N2And H2O.The determiner one of the reaction is temperature, only
The reaction in 850 DEG C of -1200 DEG C of temperature ranges can just be carried out；Two is mixed effect, and mixed effect is better, and denitration efficiency is got over
High.
In prior art, typically all using wall spray gun, the pre-buried steel thimble of perforate on furnace wall, sprays the spray of reducing agent
Rifle inserts burner hearth by sleeve pipe.This device has good mixing and atomizing effect on the less burner hearth of size or kiln, takes off
Nitre efficiency high.But as jet length is restricted, there is deficiency on large-sized burner hearth, the such as 300MW of power plant and with
Upper Denitration in Boiler, its size of burner hearth is all more than ten meters to tens meters, and wall spray gun is difficult to ensure that the mixing effect in burner hearth centre
Really, partial fume is caused not reach reducing agent, denitration efficiency does not reach requirement.Country carries out ultralow row in power industry now
Put, the equal difficulty of the boiler of alone SCR denitration system reached minimum discharge standard originally, must install SNCR denitration system additional.And electric power row
Industry boiler furnace size is all larger, is badly in need of a kind of jet atomization system that can cover whole furnace profile.
Content of the invention
The technical problem to be solved is to overcome the shortcomings of to mention and defect in background above technology, provide one
Plant the grid spraying system for denitrating flue gas that area coverage is wide, denitration efficiency is high.
For solving above-mentioned technical problem, technical scheme proposed by the present invention is：
A kind of grid spraying system for denitrating flue gas, including the jacket pipe that is installed on the furnace wall of boiler and wears
In the jacket pipe and stretch into the boiler burner hearth in spray gun, the spray gun includes lance head and lance tube, the spray
Pipette tips are provided with compressed air inlet and reducing agent import, and the jacket pipe is multiple, and multiple jacket pipes are installed in described
At the differing heights of furnace wall, the spray gun in each jacket pipe, is mounted on, the lance tube is stretched in the burner hearth of boiler, spray gun
On pipe, the radial and axial of lance tube is provided with multiple nozzles.
As the improvement further to technique scheme：
Preferably, the spray gun can be connected with a driving institute in the chuck inner telescoping tube and rotation on the lance head
State the spray gun telescoping mechanism that spray gun is stretched into along the jacket pipe or retracted.
It is furthermore preferred that the spray gun telescoping mechanism is included by motor-driven spray gun expansion rail, the spray gun expansion rail
Draw-in groove is offered on road, is provided with match with the draw-in groove the lance head is stretched with the spray gun on the lance head
The connecting seat that track is attached.
Preferably, the spray orifice of the nozzle is in cylinder, or is 30 ° -60 ° of taper in cone angle, and cone mouth is towards peripheral hardware
Put.
Preferably, the tube wall of the jacket pipe is that hollow structure, jacket pipe stretches into one end of burner hearth and offers and the folder
The tube wall inner space of sleeve pipe for purge hole that the lance tube is purged, the jacket pipe stretches out one end of burner hearth
The purge gass import being provided with the tube wall inner space of the jacket pipe.
It is furthermore preferred that the jacket pipe stretches into one end of burner hearth offers multiple purge holes, multiple purge holes
It is uniformly arranged along the jacket pipe ring.
It is furthermore preferred that the purge hole is arranged in 40 ° of -50 ° of angles towards in the burner hearth with the axis of the jacket pipe.
It is furthermore preferred that the tube wall of the lance tube is hollow structure, the lance tube stretches out the one of the furnace wall of the boiler
End is provided with cooling water inlet and coolant outlet with the tube wall inner space of the lance tube.
Compared with prior art, it is an advantage of the current invention that：
(1) at the differing heights of furnace wall, multiple jacket pipes are installed, spray gun is installed in each jacket pipe, and in lance tube
On along lance tube the multiple nozzles of radial and axial setting, the latticed spraying system of networking composition.The grid spraying system spray
Wide coverage is penetrated, all standing of whole furnace profile is can achieve, the mixability of reducing agent and flue gas is effectively improved, improve de-
Nitre efficiency.
(2) the grid spraying system of the present invention can determine composition net according to the projected area of the size of burner hearth and single-nozzle
The spray gun quantity of lattice spraying system and nozzle quantity and the spacing of arrangement and single spray gun, can be according to the reality of the different type of furnaces
Situation is adjusted, using flexible.
(3) in the grid spraying system of the present invention, spray gun can be in chuck inner telescoping tube and rotation, can be according to different boilers
The length of the lance tube of burner hearth is stretched in practical situation adjustment, while convenient take out spray gun is overhauled, and adjustable nozzles
Spray orifice direction, and then the injection direction of reducing agent is adjusted, further increase the motility for using.
Description of the drawings
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
Accompanying drawing to be used needed for technology description is had to be briefly described, it should be apparent that, drawings in the following description are the present invention
Some embodiments, for those of ordinary skill in the art, on the premise of not paying creative work, can also basis
These accompanying drawings obtain other accompanying drawings.
Fig. 1 is the structural representation of the grid spraying system of denitrating flue gas of the present invention.
Fig. 2 is the structural representation of single spray gun in the grid spraying system of denitrating flue gas of the present invention.
Fig. 3 for denitrating flue gas of the present invention grid spraying system in spray orifice be nozzle during cylinder structural representation.
Fig. 4 for spray orifice in the grid spraying system of denitrating flue gas of the present invention be taper and cone angle be structural representation when 30 °
Figure.
Fig. 5 for spray orifice in the grid spraying system of denitrating flue gas of the present invention be taper and cone angle be structural representation when 45 °
Figure.
Fig. 6 for spray orifice in the grid spraying system of denitrating flue gas of the present invention be taper and cone angle be structural representation when 60 °
Figure.
Fig. 7 is the structural representation of purge hole on jacket pipe in the grid spraying system of denitrating flue gas of the present invention.
Marginal data：
1st, furnace wall；2nd, jacket pipe；3rd, spray gun；4th, burner hearth；5th, spray gun expansion rail；21st, purge hole；22nd, purge gass import；
31st, lance head；32nd, lance tube；33rd, compressed air inlet；34th, reducing agent import；35th, nozzle；36th, connecting seat；37th, cooling water
Import；38th, coolant outlet.
Specific embodiment
For the ease of understanding the present invention, below in conjunction with Figure of description and preferred embodiment, the present invention is made more complete
Face, meticulously describe, but protection scope of the present invention is not limited to embodiment in detail below.
It should be strongly noted that when a certain element, to be described as " be fixed on, be fixed in, be connected to or be communicated in " another
When on element, it can be directly fixing, affixed, connection or connection on another element, or by connecting in the middle of other
Fitting is indirectly fixing, affixed, connection or connection are on another element.
Unless otherwise defined, the implication that all technical terms used hereinafter are generally understood that with those skilled in the art
Identical.Technical term used herein is intended merely to describe the purpose of specific embodiment, is not intended to limit the present invention
Protection domain.
Embodiment
A kind of grid spraying system for denitrating flue gas of present invention, the grid spraying system is mainly used in large-scale electricity
On the boiler that stands, mainly solve when large-sized station boiler is using SNCR denitration technology, as the furnace cavity size of boiler is big
And the denitrification reducing agent for causing and flue gas undercompounding, and then cause the low problem of SNCR denitration efficiency.The grid injection system
The structure of system is as depicted in figs. 1 and 2.From Fig. 1 and Fig. 2, which mainly includes the jacket pipe 2 being installed on the furnace wall 1 of boiler
With spray gun 3.Spray gun 3 is located in jacket pipe 2.Spray gun 3 includes lance head 31 and lance tube 32, and the lance tube 32 stretches into boiler
In burner hearth 4.Lance head 31 is provided with compressed air inlet 33 and reducing agent import 34.Include multiple folders in the grid spraying system
Sleeve pipe 2, the plurality of jacket pipe 2 is mounted on spray gun 3, lance tube in each jacket pipe 2 at the differing heights of furnace wall 1
On 32, the radial and axial of lance tube 32 is provided with multiple nozzles 35.From compressed air inlet 33 and the difference of reducing agent import 34
Compressed air and reducing agent (as ammonia, ammonia and urea liquid) is passed through into lance tube 32, carries out twin injection.Also
Former agent is sprayed from multiple nozzles 35, by the differing heights of furnace wall 1 arrange multiple spray guns 3 and spray gun 3 on radially
There are multiple nozzles 35 with axially arranged, latticed reductant injection system is built into, realize each position to boiler furnace 4
Injection reducing agent is carried out, the coverage of reducing agent injection, and then the mixed effect of raising reducing agent and flue gas is improved, improve de-
Nitre efficiency.Using the twin mode of compressed air assisted atomization, the flow of selected gas-liquid two-phase fluid, pressure, accordingly
The size of control injection drop and injection rate can make reducing agent injection reach the different parts of burner hearth 4, to adapt to different load
In the case of be sufficiently mixed with whole flue gases.The quantity of spray gun 3 and arrangement, Yi Jidan according to needed for the size of burner hearth 4 determines
35 quantity and spacing of nozzle of root spray gun 3, to improve the scope of application of the grid spraying system, using more flexible.
Spray gun 3 in the grid spraying system not only can adopt the mounting means that fixes with jacket pipe 2, it would however also be possible to employ
The movable mountings of scalable and rotation.When using movable mountings, spray gun 3 can stretch in jacket pipe 2 and rotate,
A spray gun telescoping mechanism for driving the spray gun 3 to stretch into along jacket pipe 2 or retract is connected with lance head 31.Spray gun 3 is arranged
For stretching in jacket pipe 2 and rotate, when spray gun 3 breaks down, spray gun 3 is driven to retract by spray gun telescoping mechanism, i.e.,
Spray gun 3 can be taken out and be overhauled.Can also be according to actual needs to stretching into the spray gun in boiler furnace 4 by spray gun telescoping mechanism
The length of pipe 32 is adjusted.The lance head 31 can be arbitrarily rotated in the range of 360 ° in jacket pipe 2 to be installed, to adjust nozzle
35 spray orifice direction, and then the injection direction of reducing agent is adjusted, using more flexible.
The spray gun telescoping mechanism is included by motor-driven spray gun expansion rail 5.Card is offered on the spray gun expansion rail 5
Groove, be provided with lance head 31 match with the draw-in groove for the company that is attached lance head 31 and spray gun expansion rail 5
Joint chair 36.The lance head 31 of spray gun 3 is fixedly connected in the draw-in groove on spray gun expansion rail 5 by connecting seat 36, Ran Houtong
Cross Motor drive spray gun expansion rail 5, you can realize stretching into or retracting for lance head 31.
As shown in Figures 3 to 6, in the present embodiment, the shape of the spray orifice of nozzle 35 can be selected according to practical situation.Spray
The shape in hole is preferably adopted in cylinder, or is 30 ° -60 ° of taper in cone angle, and cone mouth is arranged outwardly, can reach difference
Coverage and spray base.As shown in Fig. 2 the tube wall of jacket pipe 2 is hollow structure, jacket pipe 2 and stretching into one end of burner hearth 4 and opening up
The purge hole 21 purged by lance tube 32 having with the tube wall inner space of jacket pipe 2.Jacket pipe 2 stretches out the one of burner hearth 4
End is provided with the purge gass import 22 with the tube wall inner space of jacket pipe 2.The jacket pipe 2 not only can be played fixing and be protected
The effect of spray gun, and, gases at high pressure are introduced from purge hole 21 and spray gun 3 is purged, it is ensured that spray gun 3 is retracted smooth.Should
Purging gases at high pressure can adopt superheated steam or compressed air.During use, also will can spray when needed or at regular intervals
Rifle 3 is retracted to exit and is once periodically purged, to prevent from collecting grey coking on lance tube 32.In addition, can also adopt to lance tube 32
Surface treatment, prevents 32 coking of lance tube and excessive wear.
As shown in Figure 2 and Figure 7, preferably, the one end for stretching into burner hearth 4 in jacket pipe 2 opens up multiple purge holes 21, and
And, multiple purge holes 21 are uniformly arranged along 2 ring of jacket pipe, to improve purging effect further.Furthermore it is preferred that by purge hole
21 arrange (in Fig. 7 α) in 40 ° of -50 ° of angles towards burner hearth 4 is interior with the axis of jacket pipe 2, more preferably 45 °.Further carry
High purging effect, the collection ash coking on less lance tube 32.
In the present embodiment, the tube wall of lance tube 32 is hollow structure, and lance tube 32 stretches out one end of the furnace wall 1 of boiler and arranges
Cooling water inlet 37 and the coolant outlet 38 having with the tube wall inner space of lance tube 32.Cooling is passed through from cooling water inlet 37
Water can be cooled down to lance tube 32.The lance tube 32 adopts chuck water cooling mode, can avoid lance tube 32 by boiler
High temperature in burner hearth 4 burns out.Nozzle 35 adopts detachable mounting means (as threaded), conveniently carries out after nozzle 35 weares and teares
Change.
When spray gun 3 is using the mounting means with 2 telescopic action of jacket pipe, the operation principle of the grid spraying system is such as
Under：
(1) quantity of atomizer 35 and the quantity of position and spray gun 3 is determined according to the size of boiler scale and burner hearth 4
And position, compressed air, reducing agent, cooling water and purging gas is supplied by pipeline and control valve to all spray guns 3.
(2) cooling water inlet 37 and 38 valve of coolant outlet of spray gun 3 when putting into operation, is first opened, is then started spray gun and stretch
Contracting mechanism, spray gun 3 is stretched in burner hearth 4.After being all on board, compressed air inlet 33 and reducing agent import is sequentially opened
34 valves, reducing agent is uniform under compressed air assisted atomization to be sprayed in burner hearth 4, realizes denitration function.
(3) according to boiler load and in-furnace temperature distribution situation, the spray gun 3 of the alternative differing heights that come into operation.Also visual
Needing spray gun 3 is rotated, reducing agent atomized spray stream is allowed towards two sides of left and right or above-below direction, or use different openings instead
The nozzle 35 of angle, to reach optimal atomization and mixed effect, realizes highest denitration efficiency.
(4), when disabling, reducing agent control valve is first closed, then compressed air valve is closed, while purge hole 21 is opened, exit spray
Rifle 3.Cooling water inlet 37 and 38 valve of coolant outlet are closed after falling back on position, exit spray gun 3 in short-term or temporarily and can be not related to cooling
Water.
When spray gun 3 is using the mounting means that fixes with jacket pipe 2, the operation principle of the grid spraying system is as follows：
(1) quantity of atomizer 35 and the quantity of position and spray gun 3 is determined according to the size of boiler scale and burner hearth 4
And position, the two ends of spray gun 3 are both secured on the furnace wall 1 of boiler.By pipeline and control valve to the supply compression of all spray guns 3
Air, reducing agent, cooling water.
(2) cooling water inlet 37, the coolant outlet 38, compressed air inlet of all spray guns 3 are first opened before boiler startup
33 and 34 valve of reducing agent import.
(3) when putting into operation, 34 valve of reducing agent import is directly opened, reducing agent is uniformly sprayed under compressed air assisted atomization
In burner hearth 4, denitration function is realized.
(4) according to boiler load and in-furnace temperature distribution situation, the spray gun 3 of the alternative differing heights that come into operation.Also visual
Need to change the installation direction of nozzle 35, or use the nozzle 35 of different openings angle instead, to reach optimal atomization and mixing effect
Really, highest denitration efficiency is realized.
(5), when disabling, first reducing agent control valve is closed, after blowing out, turns off compressed air inlet 33, cooling water inlet 37
With 38 valve of coolant outlet, in short-term or interim deactivation and during not blowing out, it is impossible to close compressed air and cooling water.
The preferred embodiments of the present invention are the foregoing is only, the present invention is not limited to, for the skill of this area
For art personnel, the present invention can have various modifications and variations.All within the spirit and principles in the present invention, made any repair
Change, equivalent, improvement etc., should be included within the scope of the present invention.
Claims (8)
1. a kind of grid spraying system for denitrating flue gas, including the jacket pipe (2) that is installed on the furnace wall (1) of boiler and
The spray gun (3) for being arranged in the jacket pipe (2) and stretching in the burner hearth (4) of the boiler, described spray gun (3) include lance head
(31) and lance tube (32), lance head (31) are provided with compressed air inlet (33) and reducing agent import (34), its feature
It is：Described jacket pipe (2) are multiple, and multiple described jacket pipe (2) are arranged at the differing heights of furnace wall (1), each
The spray gun (3) is mounted in jacket pipe (2), lance tube (32) are stretched in the burner hearth (4) of boiler, on lance tube (32)
Radial and axial along lance tube (32) is provided with multiple nozzles (35).
2. the grid spraying system for denitrating flue gas according to claim 1, it is characterised in that：Spray gun (3) energy
Stretching in the jacket pipe (2) and rotate, the driving spray gun (3) is connected with lance head (31) along the chuck
The spray gun telescoping mechanism that pipe (2) is stretched into or retracted.
3. the grid spraying system for denitrating flue gas according to claim 2, it is characterised in that：The spray gun telescopic machine
Structure includes, by motor-driven spray gun expansion rail (5), to offer draw-in groove, the lance head on spray gun expansion rail (5)
(31) match with the draw-in groove the lance head (31) and spray gun expansion rail (5) are attached is provided with
Connecting seat (36).
4. the grid spraying system for denitrating flue gas according to claim 1, it is characterised in that：Nozzle (35)
Spray orifice is in cylinder, or is 30 ° -60 ° of taper in cone angle, and cone mouth is arranged outwardly.
5. the grid spraying system for denitrating flue gas according to claim 1, it is characterised in that：Jacket pipe (2)
Tube wall be hollow structure, jacket pipe (2) stretches into one end of burner hearth (4) and offers with the tube wall inner chamber of the jacket pipe (2) even
The logical purge hole (21) for being purged to the lance tube (32), jacket pipe (2) are stretched out one end of burner hearth (4) and are set
The purge gass import (22) being equipped with the tube wall inner space of the jacket pipe (2).
6. the grid spraying system for denitrating flue gas according to claim 5, it is characterised in that：Jacket pipe (2)
The one end for stretching into burner hearth (4) offers multiple the purge hole (21), and multiple purge hole (21) are along the jacket pipe (2) ring
To being uniformly arranged.
7. the grid spraying system for denitrating flue gas according to claim 6, it is characterised in that：Purge hole (21)
Arrange towards in the burner hearth (4) in 40 ° of -50 ° of angles with the axis of the jacket pipe (2).
8. the grid spraying system for denitrating flue gas according to any one of claim 1-7, it is characterised in that：Described
The tube wall of lance tube (32) be hollow structure, lance tube (32) stretch out one end of the furnace wall (1) of the boiler be provided with
The cooling water inlet (37) of the tube wall inner space of lance tube (32) and coolant outlet (38).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611078869.3A CN106423679A (en) | 2016-11-30 | 2016-11-30 | Grid injection system for flue gas denitrification |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611078869.3A CN106423679A (en) | 2016-11-30 | 2016-11-30 | Grid injection system for flue gas denitrification |
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| Publication Number | Publication Date |
|---|---|
| CN106423679A true CN106423679A (en) | 2017-02-22 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611078869.3A Pending CN106423679A (en) | 2016-11-30 | 2016-11-30 | Grid injection system for flue gas denitrification |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108386858A (en) * | 2018-03-03 | 2018-08-10 | 浙江安吉天子湖热电有限公司 | A kind of smoke processing system of denitration desulfurization and dedusting |
| CN108392960A (en) * | 2018-05-11 | 2018-08-14 | 光大环保技术研究院（南京）有限公司 | SNCR spray gun devices and garbage combustion device |
| CN108889106A (en) * | 2018-07-24 | 2018-11-27 | 玖龙纸业（太仓）有限公司 | A kind of boiler flue spray ammonia system |
| CN109224800A (en) * | 2018-09-30 | 2019-01-18 | 李晓龙 | A kind of method and apparatus of solid gas conversion denitration in the stove and its use equipment |
| CN111995887A (en) * | 2020-08-19 | 2020-11-27 | 山西盛达威科技有限公司 | Spraying adjustment method for carbon black structure |
| CN112206941A (en) * | 2020-10-26 | 2021-01-12 | 陕西秦渭绿邦环保科技有限公司 | Efficient mixing spray gun and application |
| CN113941234A (en) * | 2021-12-20 | 2022-01-18 | 湖南安普诺环保科技有限公司 | Sulfur trioxide desorption system in flue gas |
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