CN209348406U - A kind of heating of kiln system and nitrous oxides concentration control device during only expecting - Google Patents
A kind of heating of kiln system and nitrous oxides concentration control device during only expecting Download PDFInfo
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- CN209348406U CN209348406U CN201721877020.2U CN201721877020U CN209348406U CN 209348406 U CN209348406 U CN 209348406U CN 201721877020 U CN201721877020 U CN 201721877020U CN 209348406 U CN209348406 U CN 209348406U
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- ammonium hydroxide
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Abstract
Nitrous oxides concentration control device during heating up the utility model discloses a kind of kiln system and only expecting, including spray gun, ammonium hydroxide pipeline, compressed air line and controller；Spray gun is mounted on kiln tail smoke-box outer wall, and operating temperature is at 800 DEG C or more；Nozzle is provided on spray gun, nozzle level protrudes into kiln tail smoke-box；Spray gun connects controller, and controller connects measuring instrument, flow control valve, force (forcing) pump；Measuring instrument is mounted on inside kiln tail smoke-box, and when measuring temperature, wind speed, nitrous oxides concentration reach setting value, by numeric feedback to controller, controller control flow control valve, force (forcing) pump are opened and start spray gun.The utility model is added on original cement kiln end smoke-box, and without changing cement production process, application is good, high degree of automation；Kiln tail smoke-box 2 hours and can reach 800 DEG C or more of temperature after only expecting before feeding intake simultaneously in 2 hours, and wind speed is relatively high, and a small amount of ammonium hydroxide is sprayed at this i.e. and can reach the effect of reduction nitrous oxides concentration.
Description
Technical field
The utility model belongs to cement industry manufacturing field, nitrogen oxides during being related to a kind of heating of kiln system and only expecting
Concentration control apparatus.
Background technique
Now the nitrous oxides concentration in the discharge of cement industry exhaust gas is required to be increasingly stringenter, and because industry is assisted
With, keep away peak production etc. kiln system driving and parking number caused to increase, have nitrogen oxidation during only expecting that flame-out, heating feeds intake every time
The control of object concentration is difficult, causes the situation that reduced value is exceeded.During heating up or only expecting, kiln flame generates a small amount of nitrogen oxidation
Object concentration is not enough to cause nitrous oxides concentration discharge exceeded, but because coal consumption is relatively on the low side during heating and only material, is
System draws wind and can not be matched with coal, causes chimney breast oxygen content to reach 16-19%, nitrogen oxides measured value is not high but through rolling over
Its concentration over-standard after calculation.Ammonia water spray gun installation site is in the middle part of rotary kiln at present, herein temperature after only expecting and before feeding intake not
The reaction temperature of nitrogen oxides and ammonium hydroxide can be reached, and system ventilation amount hastily sprays into ammonia much smaller than air quantity during normal production
Water cannot not only play denitration, also will cause security risk.For this purpose, only selecting suitable existing sufficient wind speed, and have
The ammonia water spray position that higher temperature can be such that ammonium hydroxide is reacted, could safely and effectively play denitration.
Utility model content
In order to overcome the above-mentioned deficiencies of the prior art, the utility model provide a kind of design rationally, structure it is simple, automatic
The kiln system heating and stop nitrous oxides concentration control device during material that change degree is high and denitration efficiency is high.
The technical solution adopted in the utility model is: a kind of kiln system heating and nitrous oxides concentration controls during only expecting
Device, including spray gun, ammonium hydroxide pipeline, compressed air line and controller, ammonium hydroxide pipeline one end sequential connection tank used for storing ammonia,
Ammonium hydroxide filter, liquid pressing pump, fluid path connect hose to spray gun；Compressed air line one end sequential connection compressed air
Pipe network, air filter, gas pressurized pump, air circuit connection hose to spray gun；
The spray gun is mounted on kiln tail smoke-box outer wall, and operating temperature is at 800 DEG C or more；Spray is provided on the spray gun
Mouth, nozzle level protrude into kiln tail smoke-box；The spray gun connects controller, and controller connects measuring instrument, flow control valve, pressurization
Pump；The measuring instrument is mounted on inside kiln tail smoke-box, when measuring temperature, wind speed, nitrous oxides concentration reach setting value, will be counted
Value feeds back to controller, and controller control flow control valve, force (forcing) pump are opened and start spray gun.
Further, the spray gun setting at least two, the ammonium hydroxide and compressed air of pressurization mix in spray gun, from nozzle
Middle ejection；The nozzle protrudes into the adjustable in length of kiln tail smoke-box.
Further, ammonia water pipe road setting shut-off valve, check-valves, liquid flow regulating valve, fluid flowmeter and
Pressure gauge one；The compressed air hose road setting gas flow regulating valve, gas flowmeter and pressure gauge two.
Further, consistency controller, dilution entrance and ammonia inlet, consistency controller are set on the tank used for storing ammonia
According to concentration measurement, dilution and ammonium hydroxide additive amount are automatically controlled, and then adjusts ammonia concn to setting value.
The beneficial effects of the utility model are: the device is added on original cement rotary kiln kiln tail smoke-box, it is not necessarily to change
Cement production process, application are good；Kiln tail smoke-box can reach 800 DEG C in 2 hours before feeding intake simultaneously, after only expecting in 2 hours
There is 800 DEG C or more of temperature completely, and wind speed is relatively high, spraying into a small amount of ammonium hydroxide i.e. in this position can reach reduction nitrogen oxygen
The effect of compound concentration；It is atomized using compressed air, atomizing effect is good, and denitration reaction is fast, and the escaping of ammonia is small；Utilize controller
The unlatching of spray gun is automatically controlled, to adapt to different operating conditions, high degree of automation and reduction denitrification apparatus operating cost.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model.
Fig. 2 is the schematic diagram that spray gun is placed in kiln tail smoke-box in the utility model.
In figure: 1, kiln tail smoke-box, 2, nozzle, 3, spray gun, 4, ammonium hydroxide pipeline, 5, compressed air line, 6, pressure gauge one, 7,
Fluid flowmeter, 8, liquid flow regulating valve, 9, check-valves, 10, liquid pressing pump, 11, ammonium hydroxide filter, 12, shut-off valve,
13, tank used for storing ammonia, 14, fluid path connection hose, 15, pressure gauge two, 16, gas flowmeter, 17, gas flow regulating valve, 18, gas
Body force (forcing) pump, 19, air filter, 20, air circuit connection hose, 21, measuring instrument, 22, controller.
Specific embodiment
It is further to the utility model with reference to the accompanying drawing in order to be more clearly understood that the technical solution of the utility model
Explanation.
A kind of heating of kiln system and only nitrous oxides concentration control device during material, including spray as depicted in figs. 1 and 2
Rifle 3, ammonium hydroxide pipeline 4, compressed air line 5 and controller 22,4 one end sequential connection tank used for storing ammonia 13 of ammonium hydroxide pipeline, ammonia
Water filter 11, liquid pressing pump 10, fluid path connect hose 14 to spray gun 3；Described compressed air line one end, which is linked in sequence, presses
Contracting air pipe network, air filter 19, gas pressurized pump 18, air circuit connection hose 20 to spray gun 3；The ammonium hydroxide pipeline 4 also on
Shut-off valve 12, check-valves 9, liquid flow regulating valve 8, fluid flowmeter 7 and pressure gauge 1 are set；The compressed air line
Upper setting gas flow regulating valve 17, gas flowmeter 16 and pressure gauge 2 15.
The spray gun 3 is mounted on 1 outer wall of kiln tail smoke-box, and operating temperature is at 800 DEG C or more；It is provided on the spray gun 3
Nozzle 2, nozzle 2 horizontally extend into kiln tail smoke-box 1；The setting of spray gun 3 at least two, the ammonium hydroxide and compressed air of pressurization are in spray gun
It mixes in 3, is sprayed from nozzle 2；The length that the nozzle 2 protrudes into kiln tail smoke-box 1 can be adjusted according to needs of production.
The spray gun 3 connects controller 22, and controller 22 connects measuring instrument 21, flow control valve, force (forcing) pump；The measurement
Instrument 21 is mounted on inside kiln tail smoke-box 1, and when measuring temperature, wind speed, nitrous oxides concentration reach setting value, numeric feedback is given
Controller 22, controller 22 controls flow control valve, force (forcing) pump is opened and starts spray gun 3.
Preferably, consistency controller, dilution entrance and ammonia inlet, consistency controller are set on the tank used for storing ammonia 13
According to concentration measurement, dilution and ammonium hydroxide additive amount are automatically controlled, and then adjusts ammonia concn to setting value.
Working principle: when work, temperature that measuring instrument 21 detects, wind speed, nitrous oxides concentration parameter feedback are arrived
Controller 22, controller 22 controls liquid flow regulating valve 8, gas flow regulating valve 17 adjusts ammonium hydroxide and compressed air ratio,
Guarantee the atomizing effect of spray gun 3, at the same control liquid pressing pump 10, gas pressurized pump 18 is opened, ammonia water and air is increased
Pressure, and start spray gun 3, the ammonium hydroxide and compressed air of pressurization mix in spray gun 3, spray from nozzle 2, nozzle 2 protrudes into kiln
The length of tail smoke-box 1 can be adjusted according to the pressure of practical ammonium hydroxide and compressed air, have reached optimal reduction nitrous oxides concentration
Effect.
The utility model is added on original cement rotary kiln kiln tail smoke-box, without changing cement production process, application
It is good；Kiln tail smoke-box can reach 800 DEG C in 2 hours before feeding intake simultaneously, also there is 800 DEG C or more of temperature after only expecting in 2 hours completely
Degree, and wind speed is relatively high, and spraying into a small amount of ammonium hydroxide i.e. in this position can reach the effect of reduction nitrous oxides concentration；Using
Compressed air is atomized, and atomizing effect is good, and denitration reaction is fast, and the escaping of ammonia is small；The unlatching of spray gun is automatically controlled using controller,
To adapt to different operating conditions, high degree of automation and reduction denitrification apparatus operating cost.
The above description is only a preferred embodiment of the present invention, therefore all according to described in the utility model patent application range
The equivalent change or modification done of structure, feature and principle, be included in the scope of the utility model patent application.
Claims (4)
1. a kind of heating of kiln system and nitrous oxides concentration control device during only expecting, including spray gun (3), ammonium hydroxide pipeline (4),
Compressed air line (5) and controller (22), it is characterised in that: ammonium hydroxide pipeline (4) one end sequential connection tank used for storing ammonia
(13), ammonium hydroxide filter (11), liquid pressing pump (10), fluid path connection hose (14) to spray gun (3)；The compressed air line
One end sequential connection compressed air pipe network, air filter (19), gas pressurized pump (18), air circuit connection hose (20) to spray gun
(3)；
The spray gun (3) is mounted on kiln tail smoke-box (1) outer wall, and operating temperature is at 800 DEG C or more；It is arranged on the spray gun (3)
Have nozzle (2), nozzle (2) horizontally extends into kiln tail smoke-box (1)；The spray gun (3) connects controller (22), controller (22) connection
Measuring instrument (21), flow control valve, force (forcing) pump；It is internal that the measuring instrument (21) is mounted on kiln tail smoke-box (1), when measuring temperature,
When wind speed, nitrous oxides concentration reach setting value, numeric feedback is given controller (22), controller (22) controls flow and adjusts
Valve, force (forcing) pump are opened and start spray gun (3).
2. nitrous oxides concentration control device during kiln system according to claim 1 heats up and only expects, feature exist
In: spray gun (3) setting at least two, ammonium hydroxide and the compressed air mixing in spray gun (3) of pressurization, from spray in nozzle (2)
Out；The nozzle (2) protrudes into the adjustable in length of kiln tail smoke-box (1).
3. nitrous oxides concentration control device during kiln system according to claim 1 heats up and only expects, feature exist
In: shut-off valve (12), check-valves (9), liquid flow regulating valve (8), fluid flowmeter (7) are set on the ammonium hydroxide pipeline (4)
With pressure gauge one (6)；Compressed air hose road setting gas flow regulating valve (17), gas flowmeter (16) and pressure gauge
Two (15).
4. nitrous oxides concentration control device during kiln system according to claim 1 heats up and only expects, feature exist
In: consistency controller, dilution entrance and ammonia inlet, consistency controller are set on the tank used for storing ammonia (13) and surveyed according to concentration
Magnitude automatically controls dilution and ammonium hydroxide additive amount, and then adjusts ammonia concn to setting value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721877020.2U CN209348406U (en) | 2017-12-28 | 2017-12-28 | A kind of heating of kiln system and nitrous oxides concentration control device during only expecting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721877020.2U CN209348406U (en) | 2017-12-28 | 2017-12-28 | A kind of heating of kiln system and nitrous oxides concentration control device during only expecting |
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| Publication Number | Publication Date |
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| CN209348406U true CN209348406U (en) | 2019-09-06 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110935308A (en) * | 2019-12-20 | 2020-03-31 | 江苏人杰筑路机械科技有限公司 | Roller of draining and stirring station and denitration method |
| CN113813770A (en) * | 2021-10-26 | 2021-12-21 | 深圳开云智能有限公司 | Fusion-based artificial intelligence nitrogen oxide emission prediction and ammonia injection control system |
| CN115237047A (en) * | 2022-07-25 | 2022-10-25 | 重庆钢铁股份有限公司 | Method for reducing nitrogen consumption of converter electrostatic dust collector |
| CN115475508A (en) * | 2022-09-28 | 2022-12-16 | 天津中材工程研究中心有限公司 | Method for judging insertion position of SNCR cyclone spray gun and automatic adjusting system |
-
2017
- 2017-12-28 CN CN201721877020.2U patent/CN209348406U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110935308A (en) * | 2019-12-20 | 2020-03-31 | 江苏人杰筑路机械科技有限公司 | Roller of draining and stirring station and denitration method |
| CN113813770A (en) * | 2021-10-26 | 2021-12-21 | 深圳开云智能有限公司 | Fusion-based artificial intelligence nitrogen oxide emission prediction and ammonia injection control system |
| CN115237047A (en) * | 2022-07-25 | 2022-10-25 | 重庆钢铁股份有限公司 | Method for reducing nitrogen consumption of converter electrostatic dust collector |
| CN115475508A (en) * | 2022-09-28 | 2022-12-16 | 天津中材工程研究中心有限公司 | Method for judging insertion position of SNCR cyclone spray gun and automatic adjusting system |
| CN115475508B (en) * | 2022-09-28 | 2024-04-30 | 天津中材工程研究中心有限公司 | Method for judging insertion position of SNCR cyclone spray gun and automatic adjustment system |
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