CN106237822A - A kind of front end atomization automatic telescopic spray gun of SNCR system - Google Patents
A kind of front end atomization automatic telescopic spray gun of SNCR system Download PDFInfo
- Publication number
- CN106237822A CN106237822A CN201610721715.5A CN201610721715A CN106237822A CN 106237822 A CN106237822 A CN 106237822A CN 201610721715 A CN201610721715 A CN 201610721715A CN 106237822 A CN106237822 A CN 106237822A
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- China
- Prior art keywords
- spray gun
- compressed air
- nozzle
- jet pipe
- automatic telescopic
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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
- B01D53/74—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
- 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
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
- B01D2258/0283—Flue gases
- B01D2258/0291—Flue gases from waste incineration plants
-
- 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
Abstract
The invention discloses the front end atomization automatic telescopic spray gun of a kind of SNCR system, including: jet pipe, nozzle, regulation screw mandrel, cylinder assembly, Pneumatic assembly, compressed air gas source assembly, pedestal, described cylinder assembly, Pneumatic assembly and compressed air gas source assembly connect, described cylinder assembly includes Rodless cylinder, by regulation screw mandrel, described jet pipe is fixed on the slide unit of Rodless cylinder, by controlling the motion of slide unit, it is achieved jet pipe puts into burner hearth or exits burner hearth.The front end atomization automatic telescopic spray gun of the SNCR system of the present invention has the beneficial effect that: 1, utilize compressed air to replace centrifugal blower as atomizing space source of the gas; the structure coordinating this spray gun improves urea liquid atomizing effect and the injection uniformity, jet length; effective guarantee and the denitration effect improving SNCR system; ensure the normal operation of garbage burning factory, decrease downtime rate.2, improve the service life of spray gun.3, the occurrence frequency of spray nozzle clogging is decreased.
Description
Technical field
The present invention is applicable to the fume treatment of waste incineration industry---SNCR method denitrating system, it is used for
Denitration medicament is atomized into regulation particle diameter and is sprayed into equably in flue cross section, the front end atomization of a kind of SNCR system
Automatic telescopic spray gun.
Background technology
Centralized burning method is increasingly becoming the major way of China's urban garbage disposal, in the flue gas of incinerator
The nitrogen oxides of certain content can be produced---NOx (NO, NO2, N2O, N2O3, N2O4, N2O5General designation Deng nitrogen oxides), along with
The enhancing of national environmental consciousness, along with " consumer waste incineration Environmental capacity standard " (GB18485-2014) was from January 1 in 2016
Day implements in full, and the NOx concentration limit value in flue gas of garbage furnace emission has been brought up to 250mg/m3Hereinafter, rubbish is burnt
Burning kiln gas treatment technology and propose new requirement, one of existing widely used fume treatment technology is for selective non-catalytic also
Former method denitration---SNCR(Selective Non-Catalytic Reduction, is abbreviated as SNCR).The key of SNCR system
Ingredient is i.e. denitration spray gun, and denitration spray gun is responsible for using compressed air by denitration medicament---urea liquid or ammonia spirit
Be atomized into the granule of 50-100 μm size, be sprayed onto the flue section of 800-1100 DEG C uniformly, carbamide after atomization or
Ammonia at high temperature decomposites ammonia free radical, and ammonia free radical and NOx carry out SNCR reaction, NOx conversion are become
Free of contamination N2And water, thus realize removing the cleaning denitration technology of NOx.
1) ammonia is as the dominant response of reducing agent:
4NO+4NH3+O2 → 4N2+6H2O
2) carbamide is as the dominant response of reducing agent:
4NO+2NH2CONH2+O2→4N2+2CO2+ 4H2O
Existing spray gun structure is broadly divided into two classes, and a class is that single-fluid spray gun is also double-deck spray gun, rear end atomizing lance, gun barrel
Structure is divided into bilayer, urea liquid through jet pipe internal layer, atomizing air through jet pipe outer layer, atomizing air and urea liquid at nozzle
Mixing, the atomizing of depending nozzle, it is achieved the atomized spray of urea liquid.Another kind of is that two-fluid spray gun also makes single tube spray
Rifle, front end atomizing lance, nozzle structure is simple, and urea liquid and atomizing air enter jet pipe via a single fluid nozzle respectively
In, urea liquid starts to be atomized into microgranular in jet pipe, and after being atomized further via the two-fluid spray nozzle of lance end, spray
Inject in flue.
Dividing by spray gun mounting means and mainly have two classes, a class is fixed spray gun, and spray gun is directly fixed by mounting flange
On furnace wall, when keeping in repair or disable, take out spray gun by manual mounting flange of removing.One class is automatic telescopic spray gun, spray gun
The Telescopic of cylinder can be relied on when disabling automatically jet pipe to be exited burner hearth.
The spray gun used in prior art is mainly the fixed spray gun of single fluid, uses centrifugal blower supply atomizing air.
In actual use, the subject matter of appearance has: 1) atomization air pressure is low, and solution blows close together, and solution is more difficult
It is covered with whole flue cross section.2) urea liquid plays atomization and the distribution of spray angle, nozzle mainly by single fluid nozzle structure
Structure is complicated, and the impurity being easily subject in flue gas is piled up and blocked.3) solution atomization weak effect, causes urea molecule to cut at flue
EDS maps deviation is bigger.4) lance tube and nozzle are chronically exposed to high temperature and have in corrosive flue gas environment to easily cause and be subject to
Thermal deformation, service life is short.
Summary of the invention
In order to solve above-mentioned technical problem present in prior art, the invention provides the front end mist of a kind of SNCR system
Change automatic telescopic spray gun, including: jet pipe, nozzle, regulation screw mandrel, cylinder assembly, Pneumatic assembly, compressed air gas source assembly,
Pedestal, described cylinder assembly, Pneumatic assembly and the connection of compressed air gas source assembly, described cylinder assembly includes Rodless cylinder, logical
Overregulate screw mandrel to be fixed on the slide unit of Rodless cylinder by described jet pipe, by controlling the motion of slide unit, it is achieved jet pipe puts into stove
Thorax or exit burner hearth.
Further, going back spray gun and install sleeve pipe, spray gun is installed in sleeve pipe pre-embedding enters furnace wall and is fixed jet pipe.
Further, also include that carborundum protects sleeve pipe, carborundum protection sleeve pipe to use the carborundum of high temperature-resistant acid-resistant alkali
Material is made, and is enclosed within outside jet pipe and nozzle.
Further, described nozzle uses 55 ° of fan-shaped two-fluid spray nozzle structures.
Further, sleeve pipe installed by described spray gun and pedestal junction is provided with black box, and black box uses polytetrafluoro
The ethylene collar and asbestos cord combinative structure.
Further, also include that front end atomization combination nozzle, urea liquid and compressed air are through front end atomization combination nozzle
Cross section of fluid channel after entrance jet pipe, compressed air and urea liquid entrance front end atomization combination nozzle amasss and diminishes, higher to obtain
The solution of flow velocity and air.
Further, described Pneumatic assembly includes source of the gas three linked piece and two-position five-way double electric control electromagnetic valve, is used for controlling nothing
The stroke of bar cylinder, and keep the position of Rodless cylinder.
Further, described compressed air gas source assembly includes that pressure regulation filter, pressure regulation filter are used for regulating atomization pressure
Impurity in contracting air pressure filtering compressed air.
Further, jet pipe is installed telescopic joint with spray gun by the flange hole on described pedestal.
Present invention also offers the method for work of the front end atomization automatic telescopic spray gun of a kind of SNCR system, including as follows
Step:
Compressed air from air compression station is divided into three tunnels after entering spray gun, and the first via is passed through spray gun and installs reserved the connecing of sleeve pipe
Mouthful, it is used for cooling down gun barrel；Pneumatic assembly is accessed on second road, is used for driving cylinder；Compressed air gas source assembly is accessed on 3rd road, uses
In atomization urea liquid；
Urea liquid accesses spray gun urea liquid interface after pressure and Flow-rate adjustment；
When SNCR system needs this spray site spray gun to carry out urea liquid injection, by control system to one action of electromagnetic valve
Signal makes Rodless cylinder advance, and drives jet pipe to put in the operating position in burner hearth, after action puts in place, and the sense that Rodless cylinder is arranged
Inductive switch can feed back to the signal that this spray gun of control system puts in place, and then urea liquid control valve is opened, urea liquid and pressure
Contracting air simultaneously enters spray gun, finally sprays into burner hearth from nozzle with sector after front end atomization combination nozzle mixed aerosol；
First close urea liquid during shutdown and control valve, retain compressed air require, be beneficial to cooling protection jet pipe and nozzle；Control
System processed makes Rodless cylinder retreat to one actuating signal of electromagnetic valve, drives jet pipe to back to the position of readiness in furnace wall.
The front end atomization automatic telescopic spray gun of the SNCR system of the present invention has the beneficial effect that: 1, utilize compressed air generation
For centrifugal blower as atomizing space source of the gas, coordinate the structure of this spray gun improve urea liquid atomizing effect and injection the uniformity,
Jet length, effective guarantee and the denitration effect improving SNCR system, ensured the normal operation of garbage burning factory, decreased
Downtime rate.2, improve the service life of spray gun.3, the occurrence frequency of spray nozzle clogging is decreased.
Accompanying drawing explanation
Fig. 1 is the front end atomization automatic telescopic spray gun structure schematic diagram of the SNCR system of the present invention；
Fig. 2 is front end atomization combination nozzle arrangements schematic diagram；
Fig. 3 is this spray gun electrical schematic diagram.
Detailed description of the invention
The invention will be further described below in conjunction with the accompanying drawings.
As it is shown in figure 1, the front end atomization automatic telescopic spray gun of the SNCR system of the present invention, including: sleeve pipe installed by spray gun
1, carborundum protection sleeve pipe 2, jet pipe 3, nozzle 4, black box 5, front end atomization combination nozzle 6, regulate screw mandrel 7, cylinder assembly
8, Pneumatic assembly 9, compressed air gas source assembly 10, pedestal 11.
Spray gun is installed sleeve pipe 1 and is selected 304 stainless steel tubes, boiler design side press cigarette temperature and select correct position when build furnace wall
It is embedded in furnace wall, is used for fixing jet pipe 3.
Carborundum protection sleeve pipe 2 uses the carbofrax material of high temperature-resistant acid-resistant alkali, sinters design knot into by custom mold
Structure size, is enclosed within outside jet pipe 3 and nozzle 4, with play protection jet pipe and the effect of nozzle, prolonging nozzle 3 and jet pipe 4 use the longevity
Life.
Jet pipe 3 uses the 310S seamless steel pipe of heat-resistant, wear-resistant, in order to carry gas-liquid mixed medicament.
Nozzle 4 uses 55 ° of fan-shaped two-fluid spray nozzles, and fluid projected area is easier to cover section of burner hearth, medicament and flue gas
Mixing is evenly.
Black box 5 uses the politef collar+asbestos cord combinative structure, i.e. ensure that jet pipe 3 is in telescopic process
Lubricate smooth and easy, in turn ensure that smoke impervious is tight and do not leak.
As in figure 2 it is shown, urea liquid is carried out initial atomization by compressed air at front end atomization combination nozzle 6, nozzle is tied
Structure designs flow area, compressed air and urea liquid according to liquid inventory and gas flow and enters front end atomization combination nozzle 6
After cross section of fluid channel long-pending diminish, to obtain solution and the air of high flow velocities, make urea liquid obtain at this bigger flow velocity and
Preferably atomizing effect.
Jet pipe 3 is fixed on the slide unit of Rodless cylinder by regulation screw mandrel 7, and nozzle 4 end face that can be used for adjustable jet tube 3 is stretched
The length of flake hearth-tapping.
Cylinder assembly 8 includes the Rodless cylinder of band Magnetitum, inductive switch, buffer, flow speed control valve etc., and jet pipe 3 is fixed on nothing
On the slide unit of bar cylinder, by controlling the motion of slide unit, it is achieved spray gun puts into burner hearth or exits burner hearth.The advantage of Rodless cylinder exists
In compact conformation, nearly half that the common cylinder length of same stroke ratio is short, decrease the length of jet pipe 3.
Pneumatic assembly 9 includes source of the gas three linked piece and two-position five-way double electric control electromagnetic valve, for controlling the stroke of Rodless cylinder,
And keep the position of Rodless cylinder.
Compressed air gas source assembly 10 includes hand-operated valve, pressure regulation filter, check valve, pressure switch etc., pressure regulation filter
For regulating the impurity in atomization compressed air pressure filtering compressed air, plug nozzle, check valve is prevented to be used for preventing molten
Liquid blows back into pneumatic line, and pressure switch is used for detecting compressed air pressure, it is ensured that spray gun has atomization pressure the most always
Contracting air.
Pedestal 11 is 304 corrosion resistant plate welding structural elements, is used for fixing cylinder assembly 8 element such as grade, and passes through flange hole
Jet pipe 3 is installed with spray gun installation sleeve pipe 1 and is connected.
As it is shown on figure 3, the front end atomization automatic telescopic spray gun operation principle of the SNCR system of the present invention is as follows: from sky
The compressed air at pressure station is divided into three tunnels after entering spray gun, and the first via is passed through spray gun and installs the reserved interface of sleeve pipe 1, is used for cooling down
Gun barrel；Pneumatic assembly 9 is accessed on second road, is used for driving cylinder；Compressed air gas source assembly 10 is accessed on 3rd road, is used for being atomized urine
Cellulose solution.Urea liquid accesses spray gun urea liquid interface after pressure and Flow-rate adjustment.When SNCR system needs this spray site
When spray gun carries out urea liquid injection, make cylinder advance by control system to one actuating signal of electromagnetic valve, drive spray gun to stretch
Entering well-defined working position in burner hearth, after action puts in place, the inductive switch that Rodless cylinder is arranged can feed back to control system one
Spray gun puts in place signal, and then urea liquid controls valve and opens, and urea liquid and compressed air simultaneously enter spray gun, through front end mist
Finally burner hearth is sprayed into from nozzle 4 with sector after changing combination nozzle 6 mixed aerosol.First close urea liquid during shutdown and control valve,
Retain compressed air require, be beneficial to cooling protection gun barrel and nozzle.Control system makes cylinder to one actuating signal of electromagnetic valve
Retreat, drive spray gun to back to regulation position of readiness in furnace wall.
The feature of the front end atomization automatic telescopic spray gun of the SNCR system of the present invention:
1) the unique nozzle arrangements of Position Design of jet pipe 3 is entered at compressed air and urea liquid so that runner herein
Sectional area diminishes, and compressed air flow velocity increases and mixes with urea liquid simultaneously, it is possible to reach more preferable atomizing effect and
Jet length farther out.
2) in order to improve the service life of spray gun, first design and selected Rodless cylinder so that spray gun gun barrel and nozzle
Can retract in furnace wall at low temperature need not and use when, decrease gun barrel and the nozzle open-assembly time in flue gas；Secondly
We have customized the protection sleeve pipe of carbofrax material according to the profile of spray gun, in order to reduce flue gas and spray tip under duty
Directly contact, greatly improve the service life of spray gun, decrease spray gun and nozzle variant or the probability of malfunction of blocking.
3) two-fluid spray nozzle hole is big, simple in construction, it is not easy to blocked by the impurity in flue gas.Spray is moved on to after atomizer
Pipe front end, it is to avoid atomizer blocks the probability of atomizer because of temperature distortion or flue gas impurity.
4) unique front end atomizing nozzle structure, serves certain saving atomization compressed air consumption, saves energy consumption
The effect of amount.
Claims (10)
1. a front end atomization automatic telescopic spray gun for SNCR system, including: jet pipe (3), nozzle (4), regulation screw mandrel (7),
Cylinder assembly (8), Pneumatic assembly (9), compressed air gas source assembly (10), pedestal (11), described cylinder assembly (8), pneumatic group
Part (9) and compressed air gas source assembly (10) connect, it is characterised in that: described cylinder assembly (8) includes Rodless cylinder, by adjusting
Described jet pipe (3) is fixed on the slide unit of Rodless cylinder by joint screw mandrel (7), by controlling the motion of slide unit, it is achieved jet pipe (3) is thrown
Enter burner hearth or exit burner hearth.
2. the front end atomization automatic telescopic spray gun of SNCR system as claimed in claim 1, it is characterised in that: go back spray gun and install
Sleeve pipe (1), spray gun is installed in sleeve pipe (1) is embedded into furnace wall and is fixed jet pipe (3).
3. the front end atomization automatic telescopic spray gun of SNCR system as claimed in claim 1 or 2, it is characterised in that: also include
Carborundum protection sleeve pipe (2), carborundum protection sleeve pipe (2) uses the carbofrax material of high temperature-resistant acid-resistant alkali to make, is enclosed within jet pipe
(3) and nozzle (4) outside.
4. the front end atomization automatic telescopic spray gun of SNCR system as claimed in claim 1, it is characterised in that: described nozzle
(4) 55 ° of fan-shaped two-fluid spray nozzle structures are used.
5. the front end atomization automatic telescopic spray gun of SNCR system as claimed in claim 2, it is characterised in that: described spray gun is pacified
Tubing (1) and pedestal (11) junction are provided with black box (5), and black box (5) uses the politef collar and asbestos
Rope combinative structure.
6. the front end atomization automatic telescopic spray gun of SNCR system as claimed in claim 1, it is characterised in that: also include front end
Atomization combination nozzle (6), urea liquid and compressed air enter jet pipe (3) through front end atomization combination nozzle (6), compressed air and
Cross section of fluid channel after urea liquid entrance front end atomization combination nozzle (6) is long-pending to diminish, to obtain solution and the air of high flow velocities.
7. the front end atomization automatic telescopic spray gun of SNCR system as claimed in claim 1, it is characterised in that: described pneumatic group
Part (9) includes source of the gas three linked piece and two-position five-way double electric control electromagnetic valve, for controlling the stroke of Rodless cylinder, and keeps without bar
The position of cylinder.
8. the front end atomization automatic telescopic spray gun of SNCR system as claimed in claim 6, it is characterised in that: described compression sky
Gas source of the gas assembly (10) includes that pressure regulation filter, pressure regulation filter are used for regulating atomization compressed air pressure filtering compressed air
In impurity.
9. the front end atomization automatic telescopic spray gun of SNCR system as claimed in claim 1, it is characterised in that: described pedestal
(11) jet pipe (3) is installed sleeve pipe (1) with spray gun and is connected by the flange hole on.
10. it is atomized a method of work for automatic telescopic spray gun such as the front end of the SNCR system of one of claim 1-9, including
Following steps:
Compressed air from air compression station is divided into three tunnels after entering spray gun, and the first via is passed through spray gun and installs what sleeve pipe (1) was reserved
Interface, is used for cooling down gun barrel；Pneumatic assembly (9) is accessed on second road, is used for driving cylinder；Compressed air gas source group is accessed on 3rd road
Part (10), is used for being atomized urea liquid；
Urea liquid accesses spray gun urea liquid interface after pressure and Flow-rate adjustment；
When SNCR system needs this spray site spray gun to carry out urea liquid injection, by control system to one action of electromagnetic valve
Signal makes Rodless cylinder advance, and drives jet pipe to put in the operating position in burner hearth, after action puts in place, and the sense that Rodless cylinder is arranged
Inductive switch can feed back to the signal that this spray gun of control system puts in place, and then urea liquid control valve is opened, urea liquid and pressure
Contracting air simultaneously enters spray gun, finally sprays into stove from nozzle (4) with sector after front end atomization combination nozzle (6) mixed aerosol
Thorax；
First close urea liquid during shutdown and control valve, retain compressed air require, be beneficial to cooling protection jet pipe and nozzle；Control
System processed makes Rodless cylinder retreat to one actuating signal of electromagnetic valve, drives jet pipe to back to the position of readiness in furnace wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610721715.5A CN106237822A (en) | 2016-08-25 | 2016-08-25 | A kind of front end atomization automatic telescopic spray gun of SNCR system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610721715.5A CN106237822A (en) | 2016-08-25 | 2016-08-25 | A kind of front end atomization automatic telescopic spray gun of SNCR system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106237822A true CN106237822A (en) | 2016-12-21 |
Family
ID=57595440
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610721715.5A Pending CN106237822A (en) | 2016-08-25 | 2016-08-25 | A kind of front end atomization automatic telescopic spray gun of SNCR system |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107008136A (en) * | 2017-05-24 | 2017-08-04 | 中国华电科工集团有限公司 | A kind of SNCR denitrification spray gun energy saver |
| 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 |
| CN108939903A (en) * | 2018-06-26 | 2018-12-07 | 中国成达工程有限公司 | A kind of online elimination device and method for the crystallization of SCR urea method denitration nozzle |
| WO2019210500A1 (en) * | 2018-05-04 | 2019-11-07 | 江苏申江环境科技有限公司 | Novel sncr spray gun fixing device |
| CN111122166A (en) * | 2019-12-17 | 2020-05-08 | 上海航天化工应用研究所 | Suffocation and cooling device for solid rocket engine |
| CN111495649A (en) * | 2020-04-08 | 2020-08-07 | 中国神华煤制油化工有限公司 | Liquid atomizing spray gun, waste lye incineration system and gun pulling method of liquid atomizing spray gun |
| CN113019109A (en) * | 2021-04-14 | 2021-06-25 | 吉林省铸洁环保有限责任公司 | Selective non-catalytic reduction desulfurization method |
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| CN103691607A (en) * | 2013-12-26 | 2014-04-02 | 江苏科行环境工程技术有限公司 | Stretching device special for SNCR denitrification spray gun |
| CN203525560U (en) * | 2013-11-08 | 2014-04-09 | 青岛华拓科技股份有限公司 | Full-automatic non-rod pneumatic spray gun device |
| CN205995264U (en) * | 2016-08-25 | 2017-03-08 | 伟明环保设备有限公司 | A kind of front end atomization automatic telescopic spray gun of SNCR system |
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| CN203525560U (en) * | 2013-11-08 | 2014-04-09 | 青岛华拓科技股份有限公司 | Full-automatic non-rod pneumatic spray gun device |
| CN103691607A (en) * | 2013-12-26 | 2014-04-02 | 江苏科行环境工程技术有限公司 | Stretching device special for SNCR denitrification spray gun |
| CN205995264U (en) * | 2016-08-25 | 2017-03-08 | 伟明环保设备有限公司 | A kind of front end atomization automatic telescopic spray gun of SNCR system |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107008136A (en) * | 2017-05-24 | 2017-08-04 | 中国华电科工集团有限公司 | A kind of SNCR denitrification spray gun energy saver |
| WO2019210500A1 (en) * | 2018-05-04 | 2019-11-07 | 江苏申江环境科技有限公司 | Novel sncr spray gun fixing device |
| 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 |
| CN108939903A (en) * | 2018-06-26 | 2018-12-07 | 中国成达工程有限公司 | A kind of online elimination device and method for the crystallization of SCR urea method denitration nozzle |
| CN111122166A (en) * | 2019-12-17 | 2020-05-08 | 上海航天化工应用研究所 | Suffocation and cooling device for solid rocket engine |
| CN111122166B (en) * | 2019-12-17 | 2022-06-03 | 上海航天化工应用研究所 | Suffocation and cooling device for solid rocket engine |
| CN111495649A (en) * | 2020-04-08 | 2020-08-07 | 中国神华煤制油化工有限公司 | Liquid atomizing spray gun, waste lye incineration system and gun pulling method of liquid atomizing spray gun |
| CN111495649B (en) * | 2020-04-08 | 2021-06-04 | 中国神华煤制油化工有限公司 | Liquid atomizing spray gun, waste lye incineration system and gun pulling method of liquid atomizing spray gun |
| CN113019109A (en) * | 2021-04-14 | 2021-06-25 | 吉林省铸洁环保有限责任公司 | Selective non-catalytic reduction desulfurization method |
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Application publication date: 20161221 |
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