CN207680356U - A kind of boiler plant - Google Patents
A kind of boiler plant Download PDFInfo
- Publication number
- CN207680356U CN207680356U CN201720640913.9U CN201720640913U CN207680356U CN 207680356 U CN207680356 U CN 207680356U CN 201720640913 U CN201720640913 U CN 201720640913U CN 207680356 U CN207680356 U CN 207680356U
- Authority
- CN
- China
- Prior art keywords
- boiler
- temperature
- valve
- controller
- feed pipe
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Abstract
The utility model embodiment discloses a kind of boiler plant, which includes valve opening/closing device, valve on-off controller, feed pipe, nozzle and temperature monitoring device, wherein feed pipe is set to boiler inner wall, for conveying material；Nozzle is set on feed pipe, and for spraying material, valve opening/closing device is set between feed pipe and nozzle, is used for the sprinkling of control material；Valve on-off controller is connected with temperature monitoring device and valve opening/closing device respectively, temperature monitoring device is used to monitor the temperature in boiler, the unlatching for the temperature control valve door switch unit that valve on-off controller is monitored according to temperature monitoring device or closure, to the sprinkling of control material；For boiler plant provided by the utility model by accurate temperature monitoring, material is sprayed in the region that optimal reaction temperature is reached in temperature, can be so that reaction is more abundant, and denitration is more thorough, to more environmentally-friendly.
Description
Technical field
The utility model is related to station boiler denitrating technique fields, more particularly to a kind of boiler plant.
Background technology
Coal-fired power station boiler needs to carry out denitration process to exhaust gas before waste air.Existing SCR (Selective
Catalytic Reduction) denitration technology be SCR technology.The catalyst costs of SCR technology typically constitute
40% or so of SCR system initial outlay, operating cost is largely influenced by catalyst life, selective non-catalytic
Reduction method denitration technology comes into being.Selective non-catalytic reduction method（Selective Non-Catalytic Reduction,
SNCR) technology is a kind of method for not having to catalyst, NOx being restored within the scope of 850 DEG C 1100 DEG C, and reducing agent often uses ammonia or urine
Element is initially invented by the Exxon companies in the U.S. and successfully puts into commercial Application in Japan in 1974, by U.S. Fuel Tech
Company promotes, and the U.S. is the country that application example is most in the world at present.This method is that the reducing agent containing NHx bases is sprayed into stove
After bore temperature is 850 DEG C 1100 DEG C of region, rapid thermal decomposition at NH3 and other by-products, subsequent NH3 in flue gas
NOx carries out SNCR reactions and generates N2.
The reaction that SNCR restores NO is very sensitive for temperature condition, selection a little is sprayed on burner hearth, that is, so-called
The selection of temperature window is the key that SNCR reduction NO efficiencies.It is generally acknowledged that ideal temperature range is 850 DEG C 1100
DEG C, and it is different with the variation of type of reactor.When reaction temperature is less than temperature window, due to the limit of residence time
System, often makes chemical reaction be not enough, and to cause the reduction rate of NO relatively low, while the NH3 for having neither part nor lot in reaction increases
The escape that will also result in ammonia, encounter SO2 will produce NH4HSO4 and（NH4) 2SO4 easily causes air preheater blocking, and has
The danger of corrosion.And when reaction temperature is higher than temperature window, the oxidation reaction of NH3 starts to play a leading role, to NH3's
Effect is as oxidation and generates NO, rather than it is N2 to restore NO.How to choose suitable temperature condition while taking into account reduction reduction
The leakage of agent becomes the key of SNCR technologies successful application.
Utility model content
The utility model is mainly solving the technical problems that provide a kind of boiler plant, by accurate temperature monitoring, in temperature
Degree reaches the region sprinkling material of optimal reaction temperature, can be so that reaction is more abundant, and denitration is more thorough, to more environmentally-friendly.
In order to solve the above technical problems, the technical solution that the utility model uses is：
A kind of boiler plant, which is characterized in that the equipment includes valve opening/closing device, valve on-off controller, feeding
Pipe, nozzle and temperature monitoring device, wherein the feed pipe is set to boiler inner wall, for conveying material；The nozzle is set
It is placed on the feed pipe, for spraying material, the valve opening/closing device is set between the feed pipe and the nozzle,
Sprinkling for control material；The valve on-off controller is electrically connected with temperature monitoring device and valve opening/closing device respectively,
The temperature monitoring device is used to monitor the temperature in boiler, and the valve on-off controller is supervised according to the temperature monitoring device
The temperature of survey controls unlatching or the closure of the valve opening/closing device, to the sprinkling of control material.
Further, the temperature monitoring device is uniformly distributed on boiler, the temperature for monitoring each section of boiler.
Further, the valve opening/closing device includes receiving controller and valve, described in the reception controller reception
The control signal that valve on-off controller is sent controls the closure or openness of the valve according to the control signal.
Further, the boiler further includes peephole, and the peephole is for observing Product Status or equipment in boiler
Working order.
Further, the boiler further includes high temperature superheater, and the high temperature superheater is connected with the feed pipe, is used
In heated material.
Further, the nozzle is uniformly arranged on the feed pipe.
Further, the nozzle is provided with regulating device, and the regulating device is used to adjust jet expansion circulation area,
And then adjust the material quantity that nozzle sprays.
Boiler plant provided by the utility model include valve opening/closing device, valve on-off controller, feed pipe, nozzle with
And temperature monitoring device, wherein feed pipe is set to boiler inner wall, for conveying material；Nozzle is set on feed pipe, is used for
Material is sprayed, valve opening/closing device is set between feed pipe and nozzle, is used for the sprinkling of control material；Valve on-off controller
It is connected respectively with temperature monitoring device and valve opening/closing device, temperature monitoring device is used to monitor the temperature in boiler, valve
The unlatching for the temperature control valve door switch unit that switch controller is monitored according to temperature monitoring device or closure, to control object
The sprinkling of material；Boiler plant provided by the utility model reaches the area of optimal reaction temperature by accurate temperature monitoring, in temperature
Material is sprayed in domain, can be so that reaction is more abundant, and denitration is more thorough, to more environmentally-friendly.
Description of the drawings
Fig. 1 is the cross section structure schematic diagram of the utility model boiler plant；
Fig. 2 is the overall structure diagram of station boiler denitration device where the utility model boiler plant.
Specific implementation mode
Solid-state quadruple effect（QuadriDeNOx) denitrating technique is also a kind of denitration in the stove technique, and basic principle, which is similar to, to be passed
The SNCR modes of system.
Solid-state quadruple effect QuadriDeNOx denitrfying agents are a kind of active polymeric substances, are then delivered to by the mixture of airstream and strength
In boiler furnace, it is activated, gasifies at 600 DEG C or more, moment chemically reacts with NOx, is reduced into N2 and H2O.In this way,
The formation for having contained NOx from source, achievees the purpose that denitration.
Solid state reduction agent（QuadriDeNOx be a kind of functional high molecule material with efficient reduction activation it is) mainly to form
The solid state powder mixture of composition.The Main Components wherein contained have：Functional polymer reducing material（CnHmNs), emulsifier,
Dispersant, sustained release agent, activator and bleeding agent, and by compounds such as oxygen, magnesium, aluminium, silicon, sulphur, calcium, barium, manganese and rare earth elements
The catalyst and its auxiliary agent of composition.By rare earth element increase catalyst activity, catalyst by meso-hole structure compound load
Body strengthens hydrogenating reduction activity and completes to add hydrogen denitrification process, reduces the discharge of the pernicious gas NOx in the exhaust gas after coal burning
Amount.
The denitrating technique of solid-state quadruple effect is a kind of denitration in the stove technique, it uses powder gas phase automatic conveying system, in stove
Body smoke outlet and burner hearth high-temperature region select a few place's suitable position punchings to spray into macromolecule denitrfying agent, in suitable reactions temperature
NOx is reduced into N2 and H2O by area.
It is compared with traditional SNCR denitration technique, solid-state polymer denitrating technique is without spraying into process water, nothing into burner hearth
Gasification latent heat need to be consumed, therefore also improves the efficiency of combustion of boiler.
Denitrating system safety is good：It is compared with traditional SNCR denitration technique, macromolecule QuadriDeNOx denitrating techniques are not
NOx is restored using ammonium hydroxide or liquefied ammonia, therefore safe caused by ammonium hydroxide transport and storage without considering in technological design
Problem.Therefore safeties of the QuadriDeNOx on denitrating technique greatly improves.
Referring to Fig. 1, Fig. 1 is the vertical section structural schematic diagram of boiler plant in the utility model embodiment, specifically：
Boiler plant in the present embodiment includes valve opening/closing device, valve on-off controller（It is not shown in figure）, feeding
Pipe, nozzle and temperature monitoring device（It is not shown in figure）, wherein feed pipe helical form is used for around boiler inner wall is set to
Convey material；Multiple nozzles for spraying material can be uniformly arranged on feed pipe, and one is merely illustrated in figure, is not done herein
Limitation；Preferably, nozzle is provided with regulating device, which adjusts spray for adjusting jet expansion circulation area
The material quantity that mouth sprays.Valve opening/closing device is set between feed pipe and nozzle, is used for the sprinkling of control material；Valve is opened
It closes controller to be electrically connected with temperature monitoring device and valve opening/closing device respectively, wherein multiple temperature monitoring device may be disposed at
The different location of boiler internal, the temperature for monitoring different spaces region in boiler；Valve on-off controller is supervised according to temperature
Unlatching or the closure for surveying the temperature control valve door switch unit of device monitoring, to the sprinkling of control material, such as：Temperature is supervised
It surveys device and monitors pot in-furnace temperature in real time, when temperature is 850 DEG C ~ 1100 DEG C, high temperature signal is sent to by temperature monitoring device
Valve on-off controller, valve on-off controller control valve switching device are opened；When temperature is less than 850 DEG C or higher than 1100 DEG C
When, low-temperature signal is sent to valve on-off controller, valve on-off controller control valve switching device by temperature sensing-controlling device
It is closed.Further, valve opening/closing device includes receiving controller and valve, wherein receives controller and receives valve switch control
The control signal that device processed is sent, according to the closure or openness of the control signal control valve door.
Further, temperature monitoring device is uniformly distributed on boiler, the temperature for monitoring boiler different spaces region.
Further, the boiler plant in the present embodiment further includes peephole（Please refer to Fig. 2）, the peephole is for observing
Product Status or equipment operation in boiler, so as to preferably be monitored and controlled in real time.
Further, it also needs to heat by high temperature superheater before material enters boiler plant, so as to make material
Sprinkling evenly, denitration reaction is more thorough, and material is more saved.High temperature superheater is connected with feed pipe.
Referring to Fig. 2, Fig. 2 is the overall logic structure of station boiler denitration device where the utility model boiler plant
Schematic diagram, specifically：
Station boiler denitration device include central control module, electronic control dispenser, boiler plant, air pump, pressure gauge,
Gas material mixing jet system, boiler, exhaust apparatus, wherein exhaust apparatus includes air-introduced machine and chimney.Boiler plant respectively with electricity
The son control gentle material mixing jet system of dispenser is connected, and central control module is connected with electronic control dispenser, wherein
By control dispenser is controlled electronically to control the feed quantity of boiler plant in central control module, gas material mixing jet system with
Boiler is connected, for material to be delivered to boiler；Boiler is connected with exhaust apparatus, which will pass through de- in boiler
Exhaust gas discharge after nitre reaction.Central controller is also connected with air pump, and dispenser is controlled electronically by control in central controller
Come the quantity and speed of control material conveying with air pump；It wherein is provided with pressure gauge between the gentle material mixing jet system of air pump,
Real-time status for monitoring pressure value in materail tube.Further, it is provided with peephole on boiler, is produced for observing in boiler
Product state or equipment operation, the gas in boiler are discharged through air-introduced machine by chimney after denitrating technique restores.It is preferred that
, on-line monitoring equipment is provided between air-introduced machine and chimney, for monitoring each of the exhaust gas in boiler after denitration reaction
Item index simultaneously feeds back to central control module, and central control module controls air pump and electricity by the indices of the exhaust gas of reception
Son control dispenser carrys out the quantity and speed of control material conveying.
The boiler plant provided in the present embodiment reaches the region of optimal reaction temperature by accurate temperature monitoring, in temperature
Material is sprayed, can be so that reaction to be more abundant, denitration is more thorough, to more environmentally-friendly.In addition, material first leads to before entering feed pipe
High temperature superheater heating is crossed, denitration reaction can be made more thorough；Further, material is uniformly sprayed onto in boiler by nozzle,
Also can further make denitration reaction more thorough, also can more abundant spent material, save material.
The above description is only the embodiments of the present invention, and it does not limit the scope of the patent of the present invention, every
Equivalent structure or equivalent flow shift made based on the specification and figures of the utility model, is applied directly or indirectly in
Other related technical areas are equally included in the patent within the scope of the utility model.
Claims (4)
1. a kind of boiler plant, which is characterized in that the equipment include valve opening/closing device, valve on-off controller, feed pipe,
Nozzle and temperature monitoring device, wherein the feed pipe is set to boiler inner wall, for conveying material；The nozzle setting
In on the feed pipe, for spraying material, the valve opening/closing device is set between the feed pipe and the nozzle, is used
In the sprinkling of control material；The valve on-off controller is electrically connected with temperature monitoring device and valve opening/closing device respectively, institute
It states temperature monitoring device and is monitored according to the temperature monitoring device for monitoring the temperature in boiler, the valve on-off controller
Temperature control unlatching or the closure of the valve opening/closing device, to the sprinkling of control material, the temperature monitoring device
It is uniformly distributed on boiler, the temperature for monitoring boiler different spaces region, the nozzle is uniformly arranged on the feed pipe
On, the nozzle is provided with regulating device, and the regulating device adjusts nozzle spray for adjusting jet expansion circulation area
The material quantity gone out.
2. equipment according to claim 1, which is characterized in that the valve opening/closing device includes receiving controller and valve
Door, the controller that receives receive the control signal that the valve on-off controller is sent, institute are controlled according to the control signal
State the closure or openness of valve.
3. equipment according to claim 1, which is characterized in that the boiler further includes peephole, and the peephole is used for
Product Status or equipment operation in boiler are observed,
4. equipment according to claim 1, which is characterized in that the boiler further includes high temperature superheater, the high temperature mistake
Hot device is connected with the feed pipe, is used for heated material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720640913.9U CN207680356U (en) | 2017-06-05 | 2017-06-05 | A kind of boiler plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720640913.9U CN207680356U (en) | 2017-06-05 | 2017-06-05 | A kind of boiler plant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207680356U true CN207680356U (en) | 2018-08-03 |
Family
ID=62987613
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720640913.9U Expired - Fee Related CN207680356U (en) | 2017-06-05 | 2017-06-05 | A kind of boiler plant |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207680356U (en) |
-
2017
- 2017-06-05 CN CN201720640913.9U patent/CN207680356U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2006086251A2 (en) | Targeted duct injection for so3 control | |
| CN102626588A (en) | SNCR (Selective Non Catalytic Reduction) denitrification process and device for flue gas purification of circulating fluidized bed (CFB) | |
| US8470277B2 (en) | Selective catalytic NOx reduction process and control system | |
| CN111780124B (en) | High-halogen hazardous waste incineration system and method | |
| CN105169919A (en) | Flue gas denitration device for carbon pot calciner and denitration technology of flue gas denitration device | |
| CN103349898B (en) | A kind of SNCR denitration device and method of denitration | |
| CN207680356U (en) | A kind of boiler plant | |
| CA2871405C (en) | Ammonia gas generation from urea for low temperature process requirements | |
| JPH0857261A (en) | Denitrification apparatus using aqueous solution of reducing agent | |
| CN209828701U (en) | Preparation facilities of mixed denitrifier based on aqueous ammonia + hydrazine | |
| CN207605596U (en) | A kind of denitration reaction tankage | |
| CN203342651U (en) | Urea pyrolysis and SCR (selective catalytic reduction) flue gas denitrification device | |
| CN207605597U (en) | A kind of power station denitration reaction equipment | |
| CN107158925A (en) | A kind of SCR boilers air preheater anti-blocking method | |
| CN106823718A (en) | A kind of solid denitrfying agent and its preparation method and application | |
| CN103663494A (en) | Urea pyrolysis device and pretreatment device for flue gas denitrification as well as denitrification system | |
| CN205032077U (en) | Burning furnace flue gas denitration device is forged to plain pot -type of charcoal | |
| US10197272B2 (en) | Process and apparatus for reducing acid plume | |
| CN105797555A (en) | Method for selective denitration through non-catalytic reduction method in glass melting furnace heat storage chamber | |
| US20130333597A1 (en) | Methods and Systems for Flue Gas Denitrification | |
| CN103727803A (en) | Flue gas denitrification device | |
| CN101530733B (en) | Flue gas denitration device using urea solution method | |
| CN207605677U (en) | A kind of material mixing bunker equipment | |
| CN207605678U (en) | A kind of blending bunker equipment | |
| CN207401357U (en) | A kind of denitrification apparatus suitable for carbon industry |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180803 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |