LU505237B1 - Variably-adjusted denitration and atomization spray gun - Google Patents
Variably-adjusted denitration and atomization spray gun Download PDFInfo
- Publication number
- LU505237B1 LU505237B1 LU505237A LU505237A LU505237B1 LU 505237 B1 LU505237 B1 LU 505237B1 LU 505237 A LU505237 A LU 505237A LU 505237 A LU505237 A LU 505237A LU 505237 B1 LU505237 B1 LU 505237B1
- Authority
- LU
- Luxembourg
- Prior art keywords
- inlet pipe
- wall
- liquid inlet
- liquid
- denitration
- Prior art date
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- 238000000889 atomisation Methods 0.000 title claims abstract description 33
- 239000007921 spray Substances 0.000 title claims abstract description 21
- 239000007788 liquid Substances 0.000 claims abstract description 93
- 230000003044 adaptive effect Effects 0.000 claims abstract description 5
- 239000007789 gas Substances 0.000 claims description 30
- 238000007789 sealing Methods 0.000 claims description 13
- 239000000112 cooling gas Substances 0.000 claims description 9
- 238000009434 installation Methods 0.000 claims description 5
- 238000001816 cooling Methods 0.000 claims description 3
- 230000007423 decrease Effects 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 2
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 21
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 20
- 239000000243 solution Substances 0.000 description 19
- 229910021529 ammonia Inorganic materials 0.000 description 10
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 7
- 239000004202 carbamide Substances 0.000 description 7
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 5
- 239000003546 flue gas Substances 0.000 description 5
- 239000000203 mixture Substances 0.000 description 3
- BIGPRXCJEDHCLP-UHFFFAOYSA-N ammonium bisulfate Chemical compound [NH4+].OS([O-])(=O)=O BIGPRXCJEDHCLP-UHFFFAOYSA-N 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
Classifications
-
- 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
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/40—Nitrogen compounds
- B01D2257/404—Nitrogen oxides other than dinitrogen oxide
-
- 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
Landscapes
- 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 variably-adjusted denitration and atomization spray gun, including a bracing pipe fixed on a sidewall of a flue, a liquid inlet pipe and an adjusting rod disposed in the bracing pipe, and a driving unit for driving the adjusting rod to reciprocate in an axial direction, wherein a first gap is formed between an inner wall of the liquid inlet pipe and an outer wall of the adjusting rod; an inner wall of a liquid outlet end of the liquid inlet pipe is provided with a conical inner wall; and a section on the adjusting rod corresponding to the conical inner wall is defined as a conical section adaptive with the conical inner wall; a liquid outlet end of the liquid inlet pipe is provided with a nozzle that can be communicated with the first gap; and the nozzle extends into the flue.
Description
C52P19LU-LTLUP230704 1 11.09.2023
VARIABLY-ADJUSTED DENITRATION AND ATOMIZATION LU505237
SPRAY GUN
[0001] The present invention relates to the field of boiler flue denitrification treatment technologies, and more particularly, to a variably-adjusted denitration and atomization spray gun.
[0002] The operation effect of a flue gas denitration system not only depends on the performances of a catalyst, but also is closely related to a flow field level in a denitration reactor and a mixing uniformity of NH; and nitrogen oxides in a flue gas. In order to improve the denitration efficiency, the higher the requirements of the system for the mixing uniformity of
NH; and nitrogen oxides in the flue gas, the larger the corresponding increase in the risk of ammonium bisulfate blockage in an air preheater, that is, the more serious the blockage of the air preheater. The addition amount of NH; needs to be adjusted according to the content of nitrogen oxides in the flue gas, which can meet the denitration treatment while preventing accumulation and blockage in a flue.
[0003] In view of the above deficiencies of the prior art, the technical problem to be soived by the present invention is to provide a variably-adjusted denitration and atomization spray gun that is convenient for both atomization of an ammonia-containing liquid and adjustment of the displacement of the ammonia-containing liquid.
[0004] In order to solve the above technical problem, a technical solution adopted by the present invention is to provide a variably-adjusted denitration and atomization spray gun. The variably-adjusted denitration and atomization spray gun includes: a bracing pipe fixed on a sidewall of a flue, a liquid inlet pipe and an adjusting rod sequentially disposed in the bracing pipe from the outside to the inside, and a driving unit for driving the adjusting rod to reciprocate in an axial direction, wherein a first gap for a denitration solution to flow is formed between an inner wall of the liquid inlet pipe and an outer wall of the adjusting rod; an inner wall of a liquid outlet end of the liquid inlet pipe has a diameter which increases or decreases gradually in a direction away from a liquid inlet end to form a conical inner wall; a section on the adjusting rod corresponding to the conical inner wall is defined as a conical section adaptive with the conical inner wall; a size of a section of the first gap, which corresponds to the conical section and the conical inner wall, can be changed with the reciprocating movement of the adjusting
C52P19LU-LTLUP230704 2 11.09.2023 rod; the liquid outlet end of the liquid inlet pipe is provided with a nozzle that can beLU505237 communicated with the first gap; and the nozzle extends into the flue.
[0005] Due to the adoption of the above structure, the gas inlet pipe is provided to inject compressed air, and the liquid inlet pipe is provided to inject the denitration solution, preferably a urea solution. The urea solution is mixed with the compressed air, and the mixed air-liquid is sprayed into the flue under high pressure in order to fully mix and react with nitrogen oxides in the flue gas, thereby achieving the purpose of denitration. Since the content of nitrogen oxides in the flue is not stable, the adjusting rod is movably disposed to adjust a discharge amount of the liquid inlet pipe, and a formation amount of ammonium bisulfate is reduced under the premise of meeting the denitration reaction, which can not only prevent the flue from blocking, but also save the cost. Therefore, the variably-adjusted denitration and atomization spray gun is simple and compact in structure, and convenient to operate.
[0006] The present invention has the following beneficial effects: the adjusting rod is provided to adjust an injection amount of an ammonia-containing solution, while the gas inlet pipe is provided to inject a gas which is mixed with the ammonia-containing solution to obtain a mixture, and the mixture is atomized and sprayed, which can not only ensure a full mixing and reaction with the gas in the flue for denitrification, but also reduce the generation of blockages, and reduce the production cost. Therefore, the variably-adjusted denitration and atomization spray gun 15 convenient to operate.
[0007] FIG. 1 is a schematic diagram of an installation structure of the present invention;
[0008] FIG. 2 is an enlarged view at À in FIG. 1;
[0009] FIG. 3 is a sectional view at B-B in FIG 1; and
[0010] FIG. 4 is a schematic diagram of a three-dimensional structure of the present invention.
[0011] As shown in FIGs, 1, 2, 3 and À, the present invention provides a variably-adiusted denitration and atomization spray gun. The variably-adjusted denitration and atomization spray gun includes a bracing pipe 1 fixed on a sidewall of a flue 6, a liquid inlet pipe 3 and an adjusting rod 31 sequentially disposed in the bracing pipe 1 from the outside to the inside, and a driving unit for driving the adjusting rod 31 to reciprocate in an axial direction, wherein a first gap 302 for a denitration solution to flow is formed between an inner wall of the liquid inlet pipe 3 and an outer wall of the adjusting rod 31; an inner wall of a liquid outlet end of the liquid inlet pipe 3 has a diameter which increases or decreases gradually in a direction away from a liquid inlet end to form a conical inner wall 301; a section on the adjusting rod 31 corresponding to the
C52P19LU-LTLUP230704 3 11.09.2023 conical inner wall 301 is defined as a conical section 311 adaptive with the conical inner wall U505237 301; a size of a section of the first gap 302, which corresponds to the conical section 311 and the conical inner wall 301, can be changed with the reciprocating movement of the adjusting rod 31; the liquid outlet end of the liquid inlet pipe 3 is provided with a nozzle that can be communicated with the first gap 302; and the nozzle extends into the flue 6. When in use, the movable adjusting rod 31 is used to drive the conical section 311 to move, and the width, Le, the size, of the gap between the conical section 311 and the conical inner wall 301 is adjusted, in order to adjust the liquid intake according to the atomization requirements.
[0012] Specifically, the variably-adjusted denitration and atomization spray gun further includes a gas inlet pipe 2 disposed between the bracing pipe 1 and the liquid inlet pipe 3, and a cooling gas pipe 10 disposed between the bracing pipe 1 and the gas inlet pipe 2, wherein a second gap 202 for a gas to circulate is formed between an inner wall of the gas inlet pipe 2 and an outer wall of the liquid inlet pipe 3. A spherical hood body 21 is provided to cover the gas inlet pipe 2, the liquid inlet pipe 3 and an output end of the adjusting rod 31. The hood body 21 is provided with a gas-liquid mixing cavity 211 that is airtightly communicated with the first gap 302 and the second gap 202. The nozzle is defined as an atomization nozzle 212 disposed on the hood body 21. An input end of the atomization nozzle 212 is communicated with the gas-liquid mixing cavity 211, and an output end of the atomization nozzle 212 extends into the flue 6. À liquid storage hood 32 is disposed at the liquid outlet end of the liquid inlet pipe 3. A liquid outlet hole 321 is formed in the liguid storage hood 32. One end of the liquid outlet hole 321 1s communicated with the first gap 302, and the other end of the liquid outlet hole 321 is communicated with the gas-liquid mixing cavity 211.
[0013] À third gap 101 for a cooling gas to circulate is formed between an inner wall of the cooling gas pipe 10 and an outer wall of the gas inlet pipe 2, an input end of the third gap 101 is communicated with a cooling gas source, and an output end of the third gap 101 is communicated with the flue 6.
[0014] A first guide groove 20 is formed in the inner wall of the gas inlet pipe 2, a first guide block 30 is disposed at a position, corresponding to the first guide groove 20, on the outer wall of the liquid inlet pipe 3, and the first guide block 30 extends into the first guide groove 20 to facilitate the installation and positioning of the liquid inlet pipe 3. A second guide groove 34 is formed in the inner wall of the liquid inlet pipe 3, a second guide block 35 is disposed at a position, corresponding to the second guide groove 34, on the outer wall of the adjusting rod 31, and the second guide block 35 extends into the second guide groove 34 to facilitate the installation and positioning of the adjusting rod 31.
C52P19LU-LTLUP230704 4 11.09.2023
[0015] A sealing disc 23 is provided at the gas inlet end of the gas inlet pipe 2, the liquid inlet U505237 end of the liquid inlet pipe 3 penetrates out of the sealing disc 23, and the outside of the penetrating end of the liquid inlet pipe 3 18 sleeved with a connecting disc 24. A sealing ring 33 is embedded in the inner pipe wall of the liquid inlet end of the liquid inlet pipe 3, and a side of the adjusting rod 31, which corresponds to the liquid inlet end of the liquid inlet pipe 3, passes through the sealing ring 33 and extends out of the liquid inlet pipe 3. An extending end of the adjusting rod 31 is sleeved with a fixed sleeve 36, the outside of the fixed sleeve 36 is sleeved with a corrugated expansion tube 37, one end of the cormugated expansion tube 37 is connected to the fixed sleeve 36, and the other end of the corrugated expansion tube 37 is connected to the connecting disc 24.
[0016] The driving unit includes a bracket 4 disposed on the gas inlet pipe 2. A left bracing plate 41 and a right bracing plate 42 are provided vertically on the bracket 4. A screw rod 40 is disposed between the two bracing plates. À drive motor 43 is disposed on the right bracing plate 42. One end of the screw rod 40 is connected to an output end of the drive motor 43. À connecting block 5 is screwed onto the screw rod 40. A connecting plate 51 is disposed at a non-screwed end of the connecting block S. One end of the connecting plate 51 1s connected to the extending end of the adjusting rod 31.
[0017] The principle of use of the present invention is as follows.
[0018] As shown in FIGs. 1 to À, during normal use, a compressed gas is injected into the gas inlet pipe 2, and the compressed gas is injected into the gas-liquid mixing chamber 211 along the second gap 202 between the inner wall of the gas inlet pipe 2 and the outer wall of the liquid inlet pipe 3. A urea solution (Le, an ammonia-containing solution) is injected into the liquid inlet pipe 3, and the urea solution flows into the liquid storage hood 32 along the first gap 302 between the inner wall of the liquid inlet pipe 3 and the cuter wall of the adjusting rod 31, and sprayed into the gas-liquid mixing cavity 211 through the liquid outlet hole 321 shaped as a stepped hole having a small exterior and a large interior. Therefore, the compressed air and the urea solution are mixed in the gas-liquid mixing chamber 211, and finally under the action of pressure, sprayed into the flue 6 through the atomization nozzle 212. Due to the atomization effect, gas-liquid particles can fully react with the nitrogen oxides in the flue 6, thereby improving the denitration efficiency.
[0019] When the discharge amount of smoke in the flue is reduced, or the content of nitrogen oxides in the exhaust smoke is not high, the discharge amount of the urea solution needs to be reduced simultaneously. At this time, the drive motor 43 is started to drive the screw rod 40 to rotate. The connecting block 5 which is screwed to the screw rod 40 moves horizontally to the
C52P19LU-LTLUP230704 5 11.09.2023 left with the rotation of a thread, the connecting plate 51 connected to the connecting block 5LU505237 also synchronously moves to the left, and the adjusting rod 31 connected to the connecting plate 51 also moves to the left. That is, the conical section 311 also moves to the left. Since the comical section 311 is adaptive with the conical inner wall 301, a gap, as a discharge port, between the first gap 302 and a conical surface of the conical section 311 gradually narrows while moving to the left. That is, without adjusting the pressure, the amount of liquid injection per unit time is reduced, thereby achieving the purpose of reducing the discharge of the urea solution. When the conical surface of the conical section 311 completely abuts against the conical inner wall 301, the first gap 302 is sealed by the conical surface of the conical section 311, that is, the position of a discharge port (a dotted position of the conical section 311 as shown in FIG. 2) of the liquid inlet pipe 3 is completely closed, and then the ammonia-containing solution is no longer injected. The drive motor 43 is started to rotate reversely according to the aforementioned relevant steps in need of use, so that the connecting block S drives the adjusting rod 31 to move to the right, and the size of the gap in the liquid discharge position is adjusted according to the specific requirements of use.
[0020] After use, the cooling air is injected from the cooling gas pipe 10, and the cooling air enters the flue 6 through the third gap 101 between the inner wall of the cooling gas pipe 10 and the outer wall of the gas inlet pipe 2, thereby reducing the temperature and playing a role in rapid dust reduction, so as to prevent the dust from accumulating on the atomization nozzle 212 and causing blockage.
[0021] & should be noted that although the sealing ring 33 is disposed in front of the liquid inlet pipe 3, the sealing ring will ultimately fail in a high temperature environment, so four sealing rings 33 are embedded in the present embodiment to extend the cycle of seal use. Meanwhile, the outside of the adjusting rod 31 is also sleeved with the corrugated expansion tube 37, in order to prevent the overflow of the ammonia-containing solution after the failure of all sealing rings 33. Since the ammonia-containing solution is highly volatile and corrosive, and has a certain danger while being directly discharged to the outside world, the ammonia-containing solution overflowing at this time all flows into the corrugated expansion tube 37 and accumulates, which can not only maintain the air quality of a production area, but also ensure the safety of the processing area. In the later stage, when it is confirmed that there is more overflow, the corrugated expansion tube 37 is removed, the ammonia-containing solution accumulated inside is collected, and finally the sealing ring 33 and the corrugated expansion tube 37 are removed and replaced.
Claims (10)
1. A variably-adjusted denitration and atomization spray gun, comprising a bracing pipe fixed on a sidewall of a flue, a liquid inlet pipe and an adjusting rod sequentially disposed in the bracing pipe from the outside to the inside, and a driving unit for driving the adjusting rod to reciprocate in an axial direction, wherein a first gap for a denitration solution to flow is formed between an inner wall of the liquid inlet pipe and an outer wall of the adjusting rod; an inner wall of a liquid outlet end of the liquid inlet pipe has a diameter which increases or decreases gradually in a direction away from a liquid inlet end to form a conical inner wall; a section on the adjusting rod corresponding to the conical inner wall is defined as a conical section adaptive with the conical inner wall; a size of a section of the first gap, which corresponds to the conical section and the conical inner wall, can be changed with a reciprocating movement of the adjusting rod; the liquid outlet end of the liquid inlet pipe is provided with a nozzle that can be communicated with the first gap; and the nozzle extends into the flue.
2. The variably-adjusted denitration and atomization spray gun according to claim 1, further comprising a gas inlet pipe disposed between the bracing pipe and the liquid inlet pipe, wherein a second gap for a gas to circulate is formed between an inner wall of the gas inlet pipe and an outer wall of the liquid inlet pipe; a hood body is provided to cover the gas inlet pipe, the liquid inlet pipe and an output end of the adjusting rod; the hood body is provided with a gas-liquid mixing cavity that is airtightly communicated with the first gap and the second gap; the nozzle is defined as an atomization nozzle disposed on the hood body; an input end of the atomization nozzle is communicated with the gas-liquid mixing cavity; and an output end of the atomization nozzle extends into the flue.
3. The variably-adjusted denitration and atomization spray gun according to claim 2, wherein a liquid storage hood is disposed in the liquid outlet end of the liquid inlet pipe, a liquid outlet hole is formed in the liquid storage hood, one end of the liquid outlet hole is communicated with the first gap, and the other end of the liquid outlet hole is communicated with the gas-liquid mixing cavity.
4. The variably-adjusted denitration and atomization spray gun according to claim 2, further comprising a cooling gas pipe disposed between the bracing pipe and the gas inlet pipe,
C52P19LU-LTLUP230704 7 11.09.2023 wherein a third gap for a cooling gas to circulate is formed between an inner wall of the cooling (505237 gas pipe and an outer wall of the gas inlet pipe, an input end of the third gap is communicated with a cooling gas source, and an output end of the third gap is communicated with the flue.
5. The variably-adjusted denitration and atomization spray gun according to claim 2, wherein a first guide groove is formed in the inner wall of the gas inlet pipe, a first guide block is disposed at a position, corresponding to the first guide groove, on the outer wall of the liquid inlet pipe, and the first guide block extends into the first guide groove to facilitate the installation and positioning of the liquid inlet pipe.
6. The variably-adjusted denitration and atomization spray gun according to claim 2, wherein a second guide groove is formed in the inner wall of the liquid inlet pipe, a second guide block is disposed at a position, corresponding to the second guide groove, on the outer wall of the adjusting rod, and the second guide block extends into the second guide groove to facilitate the installation and positioning of the adjusting rod.
7. The variably-adjusted denitration and atomization spray gun according to claim 6, wherein a sealing disc is provided at a gas inlet end of the gas inlet pipe, the liquid inlet end of the liquid inlet pipe penetrates out of the sealing disc, and the outside of the penetrating end of the liquid inlet pipe is sleeved with a connecting disc.
8. The variably-adjusted denitration and atomization spray gun according to claim 7, wherein a sealing ring is embedded in an inner pipe wall of the liquid inlet end of the liquid inlet pipe, and a side of the adjusting rod, which corresponds to the liquid inlet end of the liquid inlet pipe, passes through the sealing ring and extends out of the liquid inlet pipe.
9. The variably-adjusted denitration and atomization spray gun according to claim 7, wherein an extending end of the adjusting rod is sleeved with a fixed sleeve, the outside of the fixed sleeve is sleeved with a corrugated expansion tube, one end of the corrugated expansion tube is connected to the fixed sleeve, and the other end of the corrugated expansion tube is connected to the connecting disc.
10. The variably-adjusted denitration and atomization spray gun according to claim 2, wherein the driving unit comprises a bracket disposed on the gas inlet pipe; a left bracing plate
C52P19LU-LTLUP230704 8 11.09.2023 and a right bracing plate are provided vertically on the bracket; a screw rod is disposed between; 505237 the two bracing plates; a drive motor is disposed on the right bracing plate; one end of the screw rod is connected to an output end of the drive motor; a connecting block is screwed onto the screw rod; a connecting plate is disposed at a non-screwed end of the connecting block; and one end of the connecting plate is connected to an extending end of the adjusting rod.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310739074.6A CN116712849A (en) | 2023-06-21 | 2023-06-21 | Denitration and atomization spray gun for boiler flue |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| LU505237B1 true LU505237B1 (en) | 2024-04-09 |
Family
ID=87867640
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| LU505237A LU505237B1 (en) | 2023-06-21 | 2023-10-06 | Variably-adjusted denitration and atomization spray gun |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN116712849A (en) |
| LU (1) | LU505237B1 (en) |
-
2023
- 2023-06-21 CN CN202310739074.6A patent/CN116712849A/en active Pending
- 2023-10-06 LU LU505237A patent/LU505237B1/en active IP Right Grant
Also Published As
| Publication number | Publication date |
|---|---|
| CN116712849A (en) | 2023-09-08 |
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| FG | Patent granted |
Effective date: 20240409 |