CN202683061U - Automatic SNCR (Selective Non Catalytic Reduction) denitration anti-blocking jet atomization spraying gun device for smoke dust environment - Google Patents
Automatic SNCR (Selective Non Catalytic Reduction) denitration anti-blocking jet atomization spraying gun device for smoke dust environment Download PDFInfo
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- CN202683061U CN202683061U CN 201220355664 CN201220355664U CN202683061U CN 202683061 U CN202683061 U CN 202683061U CN 201220355664 CN201220355664 CN 201220355664 CN 201220355664 U CN201220355664 U CN 201220355664U CN 202683061 U CN202683061 U CN 202683061U
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Abstract
The utility model discloses an automatic SNCR (Selective Non Catalytic Reduction) denitration anti-blocking jet atomization spraying gun device for a smoke dust environment. The automatic SNCR denitration anti-blocking jet atomization spraying gun device comprises a spraying gun shower header, a sleeve sleeved on the spraying gun shower header, and a reducing agent inlet pipe, wherein the spraying gun shower header is communicated with the reducing agent inlet pipe. The automatic SNCR denitration anti-blocking jet atomization spraying gun device is characterized in that an annular dustproof plate is arranged between the sleeve and the spraying gun shower header, and is positioned at the nozzle end of the spraying gun shower header. A plurality of air holes are arranged in the annular dustproof plate, and an air inlet pipe for introducing compressed air from an air source is arranged on the sleeve. The plurality of air holes are arranged in the annular dustproof plate in a circumferentially equalizing mode. The automatic SNCR denitration anti-blocking jet atomization spraying gun device for the smoke dust environment has a good anti-blocking effect and a simple structure, and is easy to implement.
Description
Technical field
The utility model belongs to flue gas nitrogen oxide and reduces discharging (denitration) technical field, relates to a kind of SNCR denitration automatic block-resistant jet atomization spray gun device for smoke and dust environment.
Background technology
SNCR (SNCR) denitrating technique is universally acknowledged high-temperature flue gas denitration mature technology, and is in recent years domestic from external introducing, at boiler of power plant, and extensive use in the contour temperature smoke denitrating engineering in cement plant.Its key problem in technology is the ad-hoc location installing spray gun in boiler (kiln) furnace wall, and denitrification reducing agent is sprayed into burner hearth and nitrogen oxides in effluent (NO and NO
2) carry out the SNCR reaction, with NO and NO
2Change into N
2And H
2O.The decisive factor of this reaction is temperature, and only this reaction just can be carried out in 850 ℃ of-1200 ℃ of temperature ranges.Being lower than this thermotonus can not carry out, and the reducing agent that sprays into when being higher than this temperature will be oxidized to NOx, not only can not fall nitrogen, also will increase its concentration.And the position that sprays into that will satisfy the said temperature requirement all is high dirt section at boiler (kiln), especially cement kiln, it meets spraying into a little at vertical decomposition furnace top and outlet section thereof of temperature requirement, material concentration is high, and cement material very easily lumps, harden after the moisture absorption, easily cause spray gun to stop up.
In the prior art, generally all be perforate pre-buried steel sleeve pipe on the furnace wall, the spray gun of injection reduction agent inserts burner hearth by sleeve pipe.After this device uses a period of time, dust stratification in sleeve pipe very easily, dust-contained airflow is brought material dust into sleeve pipe and deposition in the stove, and, the larger particles material easily enters sleeve pipe with air-flow, is stuck in the annulus between spray gun and sleeve pipe, has more accelerated the obstruction of sleeve pipe.Stop up and harden and constantly increase the weight of, will hinder also finally to cause spray nozzle clogging, reduce atomization quality, affect the mixed effect of reducing agent and flue gas, thereby reduce denitration efficiency.And after hardening in the sleeve pipe, spray gun is extracted difficulty out, and inspection and maintenance all is difficult to carry out, and affects long-period stable operation.
The utility model content
Technical problem to be solved in the utility model provides a kind of SNCR denitration automatic block-resistant jet atomization spray gun device for smoke and dust environment, the SNCR denitration automatic block-resistant jet atomization spray gun device blocking-proof result that should be used for smoke and dust environment is good, and simple in structure, easy to implement.
The technical solution of utility model is as follows:
A kind of SNCR denitration automatic block-resistant jet atomization spray gun device for smoke and dust environment comprises the spray gun jet pipe, is sleeved on sleeve pipe and reducing agent inlet tube on the spray gun jet pipe; The spray gun jet pipe communicates with the reducing agent inlet tube, it is characterized in that, is provided with annular dust excluding plate between sleeve pipe and spray gun jet pipe; Described annular dust excluding plate is positioned at the spout end of spray gun jet pipe.
The annular dust excluding plate is provided with a plurality of pores, and sleeve pipe is provided with for introduce compressed-air actuated air inlet pipe from source of the gas.
Described a plurality of pore is arranged on the annular dust excluding plate in circumferential five equilibrium mode.
Sleeve pipe is provided with for the air inlet pipe of introducing gas from source of the gas, leaves the slit between annular dust excluding plate and spray gun jet pipe.
Annular dust excluding plate the inner has conical concave surface.
The sleeve pipe inner end is concordant with the furnace wall, and the outer section of sleeve pipe is in outside the furnace wall, and the outer section of sleeve pipe is provided with the Pressure gauge for detection of the cover intraductal atmospheric pressure, and the air inlet pipe on the sleeve pipe and the gas circuit between the source of the gas are provided with barometric damper.
The outer end of sleeve pipe and spray gun jet pipe is provided with a lock-on connection.
Described SNCR denitration automatic block-resistant jet atomization spray gun device for smoke and dust environment comprises that also the spray gun gun barrel communicates with spray gun compressed air inlet pipe be used to introducing compressed-air actuated spray gun compressed air inlet pipe.
The inner end of sleeve pipe (the spout end of spray gun) is provided with increaser.
Beneficial effect:
SNCR denitration automatic block-resistant jet atomization spray gun device for smoke and dust environment of the present utility model, the utility model prevents that by following a plurality of measures dust from stopping up spray gun:
1, in the spray gun sleeve pipe, introduces compressed air, keep pressure-fired in the sleeve pipe, prevent that dust-contained airflow from entering in the sleeve pipe;
2, in the spray gun exit, add annular micropore dust excluding plate in the annulus between spray gun jet pipe and sleeve pipe, stop that further in-furnace dust dirt particle enters in the sleeve pipe;
3, leave less slit between annular micropore dust excluding plate and spray gun jet pipe, and offer onboard circular pore, distribute along even circumferential, compressed air blows out at a high speed through small gap and pore, and the grit that is deposited on the sleeve pipe front end is blown away, and prevents its deposition and hardens;
4, spray gun sleeve pipe front end is made increaser, prevents from that larger particles dirt slag from blocking to result in blockage.
Above each measure can be adopted separately, and when comprehensive the employing, effect is better;
In addition, also in the following aspects some parts are optimized design:
Spray gun is installed one with the sleeve pipe junction and is cooperated closely quick-assembling locking joint, and one fixes spray gun, and two play the effect of envelope gas, prevent that gas releases outside stove in the sleeve pipe;
4, annular micropore dust excluding plate the inner is conical concave surface, makes things convenient for spray gun to insert and extracts out;
The utlity model has following outstanding advantages:
(1) can accumulated ash into lump in the spray gun sleeve pipe, spray gun extract out and the insertion activity freely, be convenient to spray gun inspection, maintenance and replacing nozzle etc.;
(2) stop the spray nozzle clogging phenomenon, keep spray effect not reduce, keep denitration effect to stablize and long-term operation;
(3) investment is little, compressed air consumption is minimum, does not substantially increase operating cost;
(4) apparatus structure is simple, process easy for installation, without running gear, long service life.
On the whole, the utility model is that denitration proposes great optimal design for high-temperature flue gas, improves emphatically the spray gun device anti-blocking performance, and is safer on using, Maintenance and Repair are easy, security is higher, invest simultaneously little, operating cost is low, be suitable for promoting the use of.
Description of drawings
Fig. 1 is the general structure schematic diagram that is used for the SNCR denitration automatic block-resistant jet atomization spray gun device of smoke and dust environment;
Fig. 2 is that the A of Fig. 1 is to view.
Label declaration: 1: increaser; 2: annular dust excluding plate; 3: pore; 4: sleeve pipe; 5: the spray gun jet pipe; 6: Pressure gauge; 7: lock-on connection; 8: the reducing agent inlet tube; 9: spray gun compressed air inlet pipe; 10: sleeve pipe compressed air inlet pipe; 11: barometric damper.
The specific embodiment
Below with reference to the drawings and specific embodiments the utility model is described in further details:
Embodiment 1:
A kind of SNCR denitration automatic block-resistant jet atomization spray gun device for smoke and dust environment comprises the spray gun jet pipe, is sleeved on sleeve pipe and reducing agent inlet tube on the spray gun jet pipe; The spray gun jet pipe communicates with the reducing agent inlet tube, is provided with annular dust excluding plate between sleeve pipe and spray gun jet pipe; Described annular dust excluding plate is positioned at the spout end of spray gun jet pipe.
The annular dust excluding plate is provided with a plurality of pores, and sleeve pipe is provided with for introduce compressed-air actuated air inlet pipe from source of the gas.
Described a plurality of pore is arranged on the annular dust excluding plate in circumferential five equilibrium mode.Pore is circular port.
Sleeve pipe is provided with for the air inlet pipe of introducing gas from source of the gas, leaves the slit between annular dust excluding plate and spray gun jet pipe.
The employing in pore and slit so that compressed air blows out at a high speed through small gap and pore, blows away the grit that is deposited on the sleeve pipe front end, prevents its deposition and hardens;
Annular dust excluding plate the inner has conical concave surface, makes things convenient for spray gun to insert and extraction, easy access;
The sleeve pipe inner end is concordant with the furnace wall, and the outer section of sleeve pipe is in outside the furnace wall, and the outer section of sleeve pipe is provided with the Pressure gauge (claiming again vacuum meter) for detection of the cover intraductal atmospheric pressure, and the air inlet pipe on the sleeve pipe and the gas circuit between the source of the gas are provided with barometric damper.
The outer end of sleeve pipe and spray gun jet pipe is provided with a lock-on connection.
Described SNCR denitration automatic block-resistant jet atomization spray gun device for smoke and dust environment comprises that also the spray gun gun barrel communicates with spray gun compressed air inlet pipe be used to introducing compressed-air actuated spray gun compressed air inlet pipe.
The inner end of sleeve pipe (the spout end of spray gun) is provided with increaser, can prevent from that larger particles dirt slag from blocking to result in blockage, and also can optimize the spray gun atomizing effect, improves the jet atomization performance.
Spray gun and sleeve pipe junction are installed one and are cooperated quick-assembling locking joint closely (lock-on connection be configured to prior art), and one fixes spray gun, and two play the effect of envelope gas;
Said structure combines, and plays to prevent that in-furnace dust dirt from entering sleeve pipe and deposit, harden, and forms and stops up, and wards off and exempts from harden plug nozzle and affect atomizing effect of ash.
Adopt high density nozzle (nozzle is prior art) to carry out mechanical atomization, carrying out the degree of depth by compressed air sprays, the dustproof sleeve pipe of while gun design, insert in the high cloud of dust gas of furnace high-temperature by default hole, furnace wall, the design leachy annular dust excluding plate of tool and pressure gauge in the sleeve pipe, by access compressed air, keep pressure-fired in the sleeve pipe, stop high cloud of dust gas to enter sleeve pipe and cause spray gun and spray nozzle clogging.
The above has only described basic implementation process, is not the restriction to implementation process.The those skilled in the art also can make other multi-form variations on the basis of the above description; this explanation can't also need not the variation of all embodiments is all listed, and the apparent version of drawing thus all is in the protection domain of the present utility model.
Claims (10)
1. a SNCR denitration automatic block-resistant jet atomization spray gun device that is used for smoke and dust environment comprises the spray gun jet pipe, is sleeved on sleeve pipe and reducing agent inlet tube on the spray gun jet pipe; The spray gun jet pipe communicates with the reducing agent inlet tube, it is characterized in that, is provided with annular dust excluding plate between sleeve pipe and spray gun jet pipe; Described annular dust excluding plate is positioned at the spout end of spray gun jet pipe.
2. the SNCR denitration automatic block-resistant jet atomization spray gun device for smoke and dust environment according to claim 1 is characterized in that, annular dust excluding plate is provided with a plurality of pores, and sleeve pipe is provided with for introduce compressed-air actuated air inlet pipe from source of the gas.
3. the SNCR denitration automatic block-resistant jet atomization spray gun device for smoke and dust environment according to claim 2 is characterized in that, described a plurality of pores are arranged on the annular dust excluding plate in circumferential five equilibrium mode.
4. the SNCR denitration automatic block-resistant jet atomization spray gun device for smoke and dust environment according to claim 1 is characterized in that, sleeve pipe is provided with for the air inlet pipe of introducing gas from source of the gas, leaves the slit between annular dust excluding plate and spray gun jet pipe.
5. the SNCR denitration automatic block-resistant jet atomization spray gun device for smoke and dust environment according to claim 1 is characterized in that, annular dust excluding plate the inner has conical concave surface.
6. each described SNCR denitration automatic block-resistant jet atomization spray gun device for smoke and dust environment according to claim 2-4, it is characterized in that, the sleeve pipe inner end is concordant with the furnace wall, the outer section of sleeve pipe is in outside the furnace wall, the outer section of sleeve pipe is provided with the Pressure gauge for detection of the cover intraductal atmospheric pressure, and the air inlet pipe on the sleeve pipe and the gas circuit between the source of the gas are provided with barometric damper.
7. the SNCR denitration automatic block-resistant jet atomization spray gun device for smoke and dust environment according to claim 1 is characterized in that, the outer end of sleeve pipe and spray gun jet pipe is provided with a lock-on connection.
8. the SNCR denitration automatic block-resistant jet atomization spray gun device for smoke and dust environment according to claim 1 is characterized in that, comprises that also the spray gun gun barrel communicates with spray gun compressed air inlet pipe be used to introducing compressed-air actuated spray gun compressed air inlet pipe.
9. according to claim 1,2,3,4,5,7 or 8 described SNCR denitration automatic block-resistant jet atomization spray gun devices for smoke and dust environment, it is characterized in that, the inner end of sleeve pipe is provided with increaser.
10. the SNCR denitration automatic block-resistant jet atomization spray gun device for smoke and dust environment according to claim 6 is characterized in that, the inner end of sleeve pipe is provided with increaser.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220355664 CN202683061U (en) | 2012-07-20 | 2012-07-20 | Automatic SNCR (Selective Non Catalytic Reduction) denitration anti-blocking jet atomization spraying gun device for smoke dust environment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220355664 CN202683061U (en) | 2012-07-20 | 2012-07-20 | Automatic SNCR (Selective Non Catalytic Reduction) denitration anti-blocking jet atomization spraying gun device for smoke dust environment |
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| CN202683061U true CN202683061U (en) | 2013-01-23 |
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|---|---|---|---|
| CN 201220355664 Expired - Lifetime CN202683061U (en) | 2012-07-20 | 2012-07-20 | Automatic SNCR (Selective Non Catalytic Reduction) denitration anti-blocking jet atomization spraying gun device for smoke dust environment |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102728208A (en) * | 2012-07-20 | 2012-10-17 | 湖南安普诺环保科技有限公司 | SNCR (Selective Non Catalytic Reduction) denitration automatic anti-blocking spray atomization spray gun device for smoke environment |
| CN106000042A (en) * | 2016-06-03 | 2016-10-12 | 金华华东环保设备有限公司 | Spray gun |
| CN107126831A (en) * | 2017-06-20 | 2017-09-05 | 佛山市三水新明珠建陶工业有限公司 | A kind of injector for SNCR denitration system |
| CN111841974A (en) * | 2020-06-18 | 2020-10-30 | 光大环境科技（中国）有限公司 | Cylinder type spray gun |
-
2012
- 2012-07-20 CN CN 201220355664 patent/CN202683061U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102728208A (en) * | 2012-07-20 | 2012-10-17 | 湖南安普诺环保科技有限公司 | SNCR (Selective Non Catalytic Reduction) denitration automatic anti-blocking spray atomization spray gun device for smoke environment |
| CN106000042A (en) * | 2016-06-03 | 2016-10-12 | 金华华东环保设备有限公司 | Spray gun |
| CN106000042B (en) * | 2016-06-03 | 2018-07-13 | 金华华东环保设备有限公司 | A kind of spray gun |
| CN107126831A (en) * | 2017-06-20 | 2017-09-05 | 佛山市三水新明珠建陶工业有限公司 | A kind of injector for SNCR denitration system |
| CN107126831B (en) * | 2017-06-20 | 2023-04-21 | 佛山市三水新明珠建陶工业有限公司 | Injector for SNCR denitration system |
| CN111841974A (en) * | 2020-06-18 | 2020-10-30 | 光大环境科技（中国）有限公司 | Cylinder type spray gun |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130123 |
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| CX01 | Expiry of patent term |