CN213101578U - Novel charged atomization denitration spray gun - Google Patents
Novel charged atomization denitration spray gun Download PDFInfo
- Publication number
- CN213101578U CN213101578U CN202021513758.2U CN202021513758U CN213101578U CN 213101578 U CN213101578 U CN 213101578U CN 202021513758 U CN202021513758 U CN 202021513758U CN 213101578 U CN213101578 U CN 213101578U
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- air
- pipe
- hose
- denitration
- denitration agent
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- 239000007921 spray Substances 0.000 title claims abstract description 36
- 238000000889 atomisation Methods 0.000 title description 8
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 67
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 31
- 239000010935 stainless steel Substances 0.000 claims abstract description 31
- 230000001681 protective effect Effects 0.000 claims abstract description 21
- 238000001816 cooling Methods 0.000 claims abstract description 14
- 230000008901 benefit Effects 0.000 claims abstract description 6
- 240000002853 Nelumbo nucifera Species 0.000 claims abstract description 5
- 235000006508 Nelumbo nucifera Nutrition 0.000 claims abstract description 5
- 235000006510 Nelumbo pentapetala Nutrition 0.000 claims abstract description 5
- 210000001503 joint Anatomy 0.000 claims description 6
- 230000005611 electricity Effects 0.000 claims description 5
- 239000013589 supplement Substances 0.000 claims description 5
- 239000002245 particle Substances 0.000 claims description 4
- 238000006243 chemical reaction Methods 0.000 abstract description 10
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 abstract description 9
- 239000003546 flue gas Substances 0.000 abstract description 9
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 abstract description 8
- 239000004202 carbamide Substances 0.000 abstract description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 8
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 9
- 230000006698 induction Effects 0.000 description 9
- 238000005507 spraying Methods 0.000 description 9
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 4
- 239000003638 chemical reducing agent Substances 0.000 description 3
- 229910021529 ammonia Inorganic materials 0.000 description 2
- 230000005684 electric field Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000001502 supplementing effect Effects 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Abstract
The utility model provides a novel lotus electric atomizing denitration spray gun, including protective case, there is the air hose in the protective case, the air hose endotheca has the denitration agent pipeline, air hose rear end terminal surface shutoff has the benefit core, the denitration agent pipeline passes and mends the core and supply with stainless steel hose with the denitration agent and be connected, the air hose rear portion is connected with air supply stainless steel hose, the air hose front end has connect the reducing pipe, the front end of reducing pipe has connect the hybrid tube, the front end of hybrid tube is provided with the nozzle, denitration agent pipeline front end export is provided with atomizer, the vertical response electrode ring that is located atomizer the place ahead that is provided with in the reducing pipe. The cooling air holes on the air pipe provide cooling air for the protective sleeve. The utility model has the advantages that: the atomized denitration agent after charging has the same charge, has better dispersity when being sprayed into a hearth, is beneficial to full contact of the denitration agent and flue gas, and improves the reaction efficiency of the denitration agent. The charged atomizing spray gun can be directly added by adopting urea solution with the concentration of more than 30-50%, so that the consumption of demineralized water is saved.
Description
Technical Field
The utility model relates to a novel lotus electric atomizing denitration spray gun.
Background
At present, most SNCR denitration spray guns adopt a two-fluid atomization structure. The spray gun has the problem that the atomization effect is influenced under the condition that the air volume of compressed air is insufficient or the air pressure is unstable. Because the spray gun sprays into furnace and jet distance is shorter for the less spray gun that leads to of double-current spray gun atomizing air volume, traditional SNCR denitration spray gun can not cover the furnace cross-section completely when the furnace sectional area is great, causes denitration agent and flue gas to mix inadequately, influences the reaction efficiency of denitration agent, and then causes the lower and water-cooling wall of denitration efficiency and corrodes the scheduling problem. Some traditional SNCR denitration spray guns at present spray through low concentration (10%) urea solution, mix in order to reach the two-fluid atomization effect through the lower urea solution of concentration and compressed air, this kind of mode causes the urea solution who spouts into boiler furnace to contain a large amount of demineralized water volume, the demineralized water is too much can the interior dust caking of furnace, influence furnace temperature causes denitration efficiency to reduce, cause the increase of a large amount of water waste and coal consumption simultaneously, the working costs has been increased.
The existing SNCR denitration spray gun is lack of a novel spray gun which can still ensure good atomization effect, long spray distance, large coverage area and good dispersity (ensuring mixing effect) in a hearth under the condition of spraying urea liquid with high concentration and low flow.
Disclosure of Invention
For solving the technical insufficiency, the utility model provides a novel lotus electric atomizing denitration spray gun that the degree of dispersion is good in atomizing effect, jet distance is far away, coverage area is big and furnace
The utility model discloses a realize through following measure:
the utility model provides a novel lotus electric atomizing denitration spray gun, includes the air hose, the air hose endotheca has the denitrifier pipeline, and air hose rear end terminal surface shutoff has mended the core to mend and run through on the core and have the denitrifier that is linked together with the denitrifier pipeline to supply with stainless steel flexible pipe, air hose rear portion lower extreme is connected with the air supply stainless steel flexible pipe that is linked together with the air hose, and the air hose front end has connect the reducing pipe, the front end of reducing pipe has connect the hybrid tube, the front end of hybrid tube is provided with the nozzle, the diameter of hybrid tube is less than the diameter of air hose, and the reducing pipe is wide preceding narrow cone after for, denitrifier pipeline front end export is provided with atomizer, the vertical response electrode ring that is located atomizer the place ahead that is provided with in the reducing pipe, response electrode ring electricity is connected with high temperature resistant wire, high temperature resistant wire electricity is connected.
The flange is sleeved on the outer side of the front part of the air pipe, the flange is connected with a protective sleeve sleeved outside the air pipe, the reducing pipe, the mixing pipe and the nozzle, and the air pipe is provided with a cooling air hole communicated with the inside of the protective sleeve.
The center of the bushing is connected with an outer short pipe through a nut, the outer short pipe is connected with a denitration agent supply stainless steel hose, and a denitration agent ball valve is arranged on the denitration agent supply stainless steel hose.
The rear end of the air pipe is provided with a three-way pipe fitting, a first pipe orifice of the three-way pipe fitting is in butt joint with the air pipe, a second pipe orifice of the three-way pipe fitting is plugged and connected with a supplementing core, a third pipe orifice of the three-way pipe fitting is in butt joint with an air supply stainless steel hose, and the air supply stainless steel hose is provided with an air source ball valve.
The denitration agent is supplied to the stainless steel hose at a concentration of 30-50%, and the air is supplied to the stainless steel hose with compressed air at an air pressure of 30-100 kPa.
The high-temperature-resistant wire is a 4000-6000V voltage-resistant wire, and the atomizing nozzle is an atomizing nozzle with atomizing particle size of 20-40 μm and atomizing flow of 5-120L/h.
The utility model has the advantages that: the cooling air hole on the charged atomizing denitration spray gun air pipe supplies air to the protective sleeve, the protective sleeve is not required to be independently connected into the cooling air pipe, and the spray gun structure is simpler. The charged atomizing denitration spray gun has the advantages that the outlet air speed is high, the air quantity is large, the high-concentration urea solution with the concentration of more than 30-50% is added, the good spraying distance and the mixing effect with flue gas can be still guaranteed, a large amount of desalted water can be reduced, the water saving effect can be realized, meanwhile, the influence of the denitration agent on the flue gas temperature of a hearth due to the spraying of the denitration agent can be reduced by reducing the spraying of the desalted water, and the sprayed denitration agent can be guaranteed to be in a proper reaction. The atomized denitration agent after charging has the same charge, has better dispersity when being sprayed into a hearth, is beneficial to full contact of the denitration agent and flue gas, and improves the reaction efficiency of the denitration agent.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Wherein: the denitration agent pipeline comprises a denitration agent pipeline 1, an air pipe 2, a protective sleeve 3, an atomizing spray head 4, an induction electrode ring 5, an inner wire short pipe 6, a flange plate 7, a supplement core 8, an air supply stainless steel hose 9, a denitration agent supply stainless steel hose 10, a three-way pipe fitting 11, an outer wire short pipe 12, a nut 13, a reducing pipe 14, a mixing pipe 15, a nozzle 16, a cooling air hole 17, a direct-current high-voltage power supply 18, a high-temperature-resistant lead 19, an air source ball valve 20 and a denitration agent ball valve 21.
Detailed Description
The invention is described in further detail below with reference to the accompanying drawings:
as shown in fig. 1, a novel charged atomizing and denitration spray gun comprises an air pipe 2, a denitration agent pipeline 1 is sleeved in the air pipe 2, a supplement core 8 is plugged on the end face of the rear end of the air pipe 2, the denitration agent pipeline 1 passes through the supplement core 8 to be connected with a denitration agent supply stainless steel hose 10, the lower end of the rear portion of the air pipe 2 is connected with an air supply stainless steel hose 9 communicated with the air pipe 2, a reducer pipe 14 is connected to the front end of the air pipe 2, a mixing pipe 15 is connected to the front end of the reducer pipe 14, a nozzle 16 is arranged at the front end of the mixing pipe 15, the diameter of the mixing pipe 15 is smaller than that of the air pipe 2, the reducer pipe 14 is a cone with a wide rear part and a narrow front part, an outlet at the front end of the denitration agent pipeline 1 is connected with an atomizing nozzle 4 through an inner wire short pipe 6, an induction electrode ring 5 positioned in front of the atomizing nozzle 4 is vertically arranged in, the high-temperature resistant lead 19 is electrically connected with a direct-current high-voltage power supply 18.
The flange 7 is sleeved on the outer side of the front part of the air pipe 2, the protective sleeve 3 sleeved outside the air pipe 2, the reducing pipe 14, the mixing pipe 15 and the nozzle 16 is connected with the flange 7, and the air pipe 2 is provided with a cooling air hole 17 communicated with the interior of the protective sleeve 3. The center of the bushing 8 is connected with an outer short pipe 12 through a nut 13, the outer short pipe 12 is connected with a denitration agent supply stainless steel hose 10, and the denitration agent supply stainless steel hose 10 is provided with a denitration agent ball valve 21. The rear end of the air pipe 2 is provided with a three-way pipe fitting 11, a first pipe orifice of the three-way pipe fitting 11 is in butt joint with the air pipe 2, a second pipe orifice of the three-way pipe fitting 11 is plugged and connected with a supplementing core 8, a third pipe orifice of the three-way pipe fitting 11 is in butt joint with an air supply stainless steel hose 9, and the air supply stainless steel hose 9 is provided with an air source ball valve 20. The denitration agent supply stainless steel hose 10 supplies the denitration agent with the concentration of 30-50%, and the air supply stainless steel hose 9 supplies compressed air with the air pressure of 30-100 kPa. The high temperature resistant wire 19 is a 4000-6000V voltage resistant wire 19, and the atomizer 4 is an atomizer 4 with an atomizing particle size of 20-40 μm and an atomizing flow of 5-120L/h.
The induction electrode ring 5 is externally connected with a direct-current high-voltage power supply 18, and the denitration agent atomized by the atomizer 4 passes through the induction electrode ring 5, so that the atomized denitration agent is charged with a certain amount of electricity and the same polarity. The atomized denitrifier with the same charge is fully mixed with the compressed air and is sent into the hearth under the drive of the compressed air. The activity of the atomized denitration agent with a certain charge is enhanced; and the same charges have mutually exclusive electric field action, so that the distribution of the droplets of the denitrifying agent sprayed into the boiler is more uniform and dispersed. Further promoted the even mixing of charged atomizing denitration agent and flue gas for the denitration agent obtains abundant contact reaction with the NO in the flue gas, has improved denitration efficiency. The atomizing nozzle 4 can realize the atomizing particle size of 20-40 μm and the atomizing flow rate of 5-120L/h by the method of the atomizing nozzle 4. 4 built-in filter screens of atomizer can prevent 4 blockings up of atomizer, can pull out 1 changes of denitrifier pipeline or wash atomizer 4 through unscrewing and mend core 8.
Compressed air can enter the air pipe 2 through the air stainless steel hose 9, and the air is mixed with the charged atomized denitrifying agent in the mixing pipe 15 and sprayed into the hearth through the nozzle 16. The air pipe 2 behind the charged atomizing nozzle 4 is provided with the reducing pipe, the speed of the compressed air is increased after the reducing pipe, the static pressure in the pipeline is reduced, and the denitration agent after the charged atomizing is favorable for accelerating to enter the mixing pipe 15 to be completely mixed with the pressurized air, and is sprayed into a hearth after being uniformly distributed through the nozzle 16. Compared with the traditional SNCR double-flow denitration spray gun, the charged atomization denitration spray gun has the characteristics of small compressed air pressure and large air volume. The compressed air source air pressure connected with the air pipe 2 is adjustable within the range of 30-100kPa, the compressed air amount in the pipeline can be controlled by adjusting the opening degree of the air source ball valve 20, the air speed of the compressed air at the outlet of the nozzle 16 is further controlled by adjusting the air pressure and the air amount, the adjustment of the spraying distance of the denitration spray gun is realized, the denitration agent sprayed into the hearth under the condition of different boiler sizes can completely cover the furnace wall interface, and the denitration reaction efficiency is improved.
The cooling air holes 17 arranged on the air pipe 2 can realize the purpose of providing cooling air for the protective sleeve 3, and ensure that the protective sleeve 3, the mixing pipe 15, the nozzle 16 and the like are not burnt out by high temperature in the hearth. Compare traditional cooling air interface of reserving alone, this kind of mode can reduce denitration spray gun interface quantity. The denitration agent pipe can realize the purpose of optimally adjusting the distance between the atomizing nozzle 4 and the induction electrode ring 5 through the thread outer wire arranged on the pipeline. The mixing pipe 15 is in threaded connection with the nozzle 16, the nozzle 16 can be replaced according to different spraying requirements, and the spraying distance and the spraying area under different requirements are met.
Step 1: according to the space between the water walls in the hearth and the outer diameter of the protective sleeve 3, the protective sleeve 3 is fixed on the boiler wall; the air pipe 2 is connected with a mixing pipe 15, a nozzle 16, an induction electrode ring 5, a three-way pipe fitting 11 and a denitration agent supply stainless steel hose 10; the denitration agent pipeline 1 is connected with the atomizing nozzle 4, the supplement core 8, the adjusting nut 13 and the air supply stainless steel hose 9; the connected denitrifier pipeline 1 is inserted into the air pipe 2 and is fixed with the air pipe 2 through the bushing 8 and the adjusting nut 13, and the connected air pipe 2 is inserted into the protective sleeve 3 and is fixed with the protective sleeve 3 through the flange; finally, the air supply stainless steel hose 9 and the air source ball valve 20 are connected to a compressed air supply pipe, and the denitration agent supply stainless steel hose 10 and the denitration agent ball valve 21 are connected to a denitration agent supply pipe.
And 2, opening the air source ball valve 20 to send compressed air into the air pipe 2, sending the compressed air into the hearth through the mixing pipe 15 and the nozzle 16, enabling part of the compressed air to enter the protective sleeve 3 through the cooling air holes 17, cooling the protective sleeve 3, and reducing the risk that the protective sleeve 3, the mixing pipe 15 and the nozzle 16 are damaged by high temperature.
And 3, switching on a direct-current high-voltage power supply 18 to electrify the induction electrode ring 5, opening a denitration agent ball valve 21 to send the denitration agent into the denitration agent pipeline 1, forming an atomized denitration agent through the atomizing nozzle 4, mixing the atomized denitration agent with air in the air pipe 2, and then enabling the mixed denitration agent to penetrate through the induction electrode ring 5, so that the atomized denitration agent is provided with a certain amount of same electric charges and is evenly sent into a hearth through the mixing pipe 15 and the nozzle 16.
The main principle is as follows: the urea solution with the concentration of 30-50% does not need to be diluted, the urea solution is directly atomized and then mixed with compressed air to pass through the induction electrode ring 5, so that the atomized and mixed denitration agent has certain charges with the same polarity, and the atomized denitration agent after being mixed with the charges is sprayed into a hearth through the mixing pipe 15 and the nozzle 16. Compared with the traditional SNCR double-flow denitration spray gun, the charged atomization denitration spray gun has the characteristics of small compressed air pressure and large air volume. The compressed air source air pressure connected with the air pipe 2 is adjustable within the range of 30-100kPa, the compressed air amount in the pipeline can be controlled by adjusting the opening degree of the air source ball valve 20, the air speed of the compressed air at the outlet of the nozzle 16 is further controlled by adjusting the air pressure and the air amount, the adjustment of the spraying distance of the denitration spray gun is realized, the denitration agent sprayed into the hearth under the condition of different boiler sizes can completely cover the furnace wall interface, and the denitration reaction efficiency is improved. Because the denitration agent has high concentration and less liquid, the denitration agent has less heat absorption after being sprayed into the hearth, the temperature of a reaction area is influenced, the reaction is more sufficient, the denitration efficiency is high, and the ammonia escape is less. The activity of the atomized charged denitration agent is enhanced, and the same charges have mutually exclusive electric field force action, so that the distribution of the denitration agent fog drops sprayed into the boiler is more uniform and dispersed. The uniform mixing of the atomized denitration agent with charges and the flue gas is promoted, so that the denitration agent and NO in the flue gas are in full contact reaction, the denitration efficiency is further improved, the denitration agent is prevented from being excessively sprayed, the phenomenon of water-cooled wall corrosion is avoided, and the condition of ammonia escape is reduced.
The foregoing is only a preferred embodiment of this patent, and it should be noted that, for those skilled in the art, various modifications and substitutions can be made without departing from the technical principle of this patent, and these modifications and substitutions should also be regarded as the protection scope of this patent.
Claims (5)
1. The utility model provides a novel lotus electric atomizing denitration spray gun which characterized in that: including the air hose, the air hose endotheca has the denitrifier pipeline, and air hose rear end terminal surface shutoff has the benefit core to run through on the benefit core and have the denitrifier that is linked together with the denitrifier pipeline to supply with stainless steel hose, air hose rear portion lower extreme is connected with the air supply stainless steel hose that is linked together with the air hose, and the air hose front end has connect the reducing pipe, the front end of reducing pipe has connect the hybrid tube, the front end of hybrid tube is provided with the nozzle, the diameter of hybrid tube is less than the diameter of air hose, and the reducing pipe is narrow cone before wide back, denitrifier pipeline front end outlet is provided with atomizer, the vertical response electrode ring that is located atomizer the place ahead that is provided with in the reducing pipe, response electrode ring electricity is connected with high temperature resistant wire, high temperature resistant wire electricity is connected with direct current high voltage power supply.
2. The novel charged atomizing denitration spray gun as set forth in claim 1, characterized in that: the anterior outside cover of air hose has the ring flange, the ring flange is connected with the protective case of cover outside air hose, reducing pipe, hybrid tube and nozzle, it has the cooling wind hole that is linked together with protective case inside to open on the air hose.
3. The novel charged atomizing denitration spray gun as set forth in claim 1, characterized in that: the center of the bushing is connected with an outer short pipe through a nut, the outer short pipe is connected with a denitration agent supply stainless steel hose, and a denitration agent ball valve is arranged on the denitration agent supply stainless steel hose.
4. The novel charged atomizing denitration spray gun as set forth in claim 1, characterized in that: the air supply device is characterized in that a three-way pipe is arranged at the rear end of the air pipe, a first pipe orifice of the three-way pipe is in butt joint with the air pipe, a second pipe orifice of the three-way pipe is plugged and connected with a supplement core, a third pipe orifice of the three-way pipe is in butt joint with an air supply stainless steel hose, and the air supply stainless steel hose is provided with an air source ball valve.
5. The novel charged atomizing denitration spray gun as set forth in claim 1, characterized in that: the high-temperature-resistant wire is a 4000-6000V voltage-resistant wire, and the atomizing nozzle is an atomizing nozzle with atomizing particle size of 20-40 μm and atomizing flow of 5-120L/h.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021513758.2U CN213101578U (en) | 2020-07-28 | 2020-07-28 | Novel charged atomization denitration spray gun |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021513758.2U CN213101578U (en) | 2020-07-28 | 2020-07-28 | Novel charged atomization denitration spray gun |
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| Publication Number | Publication Date |
|---|---|
| CN213101578U true CN213101578U (en) | 2021-05-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021513758.2U Expired - Fee Related CN213101578U (en) | 2020-07-28 | 2020-07-28 | Novel charged atomization denitration spray gun |
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| CN (1) | CN213101578U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114985135A (en) * | 2022-04-29 | 2022-09-02 | 重庆三峰百果园环保发电有限公司 | Denitration spray gun |
-
2020
- 2020-07-28 CN CN202021513758.2U patent/CN213101578U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114985135A (en) * | 2022-04-29 | 2022-09-02 | 重庆三峰百果园环保发电有限公司 | Denitration spray gun |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210504 |