CN206831547U - A kind of system that flue-gas temperature is adjusted using heat primary air waste heat - Google Patents
A kind of system that flue-gas temperature is adjusted using heat primary air waste heat Download PDFInfo
- Publication number
- CN206831547U CN206831547U CN201720728278.XU CN201720728278U CN206831547U CN 206831547 U CN206831547 U CN 206831547U CN 201720728278 U CN201720728278 U CN 201720728278U CN 206831547 U CN206831547 U CN 206831547U
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- China
- Prior art keywords
- primary air
- circulating water
- heat
- heat primary
- flue
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- 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
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- Chimneys And Flues (AREA)
Abstract
The utility model discloses a kind of system that flue-gas temperature is adjusted using heat primary air waste heat, cooler, heater, circulating water pipeline, heat primary air inlet duct, heat primary air outlet conduit, smoke inlet pipelines, exhanst gas outlet pipeline, water pump；The circulating water pipeline is closed cycle structure, and the cooler is connected on circulating water pipeline, and heat primary air inlet duct and heat primary air outlet conduit are connected on cooler；The heater is connected on circulating water pipeline, and smoke inlet pipelines connect heater with exhanst gas outlet pipeline；It is arranged on to provide circulating water power and adjust the water pump of circulating water flow on circulating water pipeline.The beneficial effects of the utility model：Coal pulverizer inlet heat primary air temperature is reduced, chimney breast flue-gas temperature is improved, can largely reduce cold primary air flow, strengthen air preheater heat exchange efficiency, while improve the exhaust temperature of flue gas, reduce flue gas condensing condensation, it can help to eliminate " emitting white cigarette " phenomenon, improve surrounding enviroment quality.
Description
Technical field
A kind of system for adjusting temperature is the utility model is related to, more particularly to one kind is adjusted using heat primary air waste heat
The system of flue-gas temperature.
Background technology
Coal pulverizer is by coal crusher and wears into the machinery of coal dust, and it is the important auxiliary equipment of coal-powder boiler.
Coal pulverizer in operation, to ensure ventilation and drying capacity, it is necessary to which coal pulverizer import heat primary air temperature is tieed up
Hold in allowed band, need to strictly control import wind-warm syndrome, therefore the heat primary air for being sent into coal pulverizer needs to add cold First air and mixed
Close cooling.The cold primary air flow added is more, and the heat exchange amount of air preheater is lower, exhaust gas temperature rise, boiler thermal output drop
It is low.
When the flue-gas temperature of chimney discharge is relatively low, " emitting white cigarette " phenomenon just occurs, in the back of the body that current environmental protection is increasingly strict
Under scape, flue-gas temperature at chimney is improved, it is also more and more urgent to solve " emitting white cigarette " phenomenon.
Utility model content
Technical problem to be solved in the utility model is the provision of one kind using heat primary air waste heat regulation coal pulverizer
Import wind-warm syndrome and the system for improving chimney entrance flue gas temperature.
The utility model is that solve above-mentioned technical problem by the following technical programs：The utility model include cooler,
Heater, circulating water pipeline, heat primary air inlet duct, heat primary air outlet conduit, smoke inlet pipelines, smoke outlet tube
Road, water pump；The circulating water pipeline is closed cycle structure, and the cooler is connected on circulating water pipeline, and heat primary air enters
Mouth pipeline and heat primary air outlet conduit are connected on cooler；The heater is connected on circulating water pipeline, smoke inlet
Pipeline connects heater with exhanst gas outlet pipeline；It is arranged on to provide circulating water power and adjust the water pump of circulating water flow
On circulating water pipeline.
Preferably, the cooler goes out provided with circulation water inlet, circulating water outlet and heat primary air entrance, heat primary air
Mouthful；The circulation water inlet, circulating water outlet access circulating water pipeline, heat primary air entrance, heat primary air outlet access heat one
Secondary wind inlet duct, heat primary air outlet conduit.
Preferably, the heater is provided with circulation water inlet, circulating water outlet and smoke inlet, exhanst gas outlet；It is described
Water inlet, circulating water outlet access circulating water pipeline are circulated, smoke inlet, exhanst gas outlet access smoke inlet pipelines, flue gas go out
Mouth pipeline.
Preferably, the circulating water pipeline also includes two stop valves, is separately positioned on the both ends of the water pump.
Preferably, the water pump is also provided with a bypass, is connected in parallel on described two stop valve both ends.
Preferably, the water pump is variable frequency pump.
Preferably, in addition to it is used for the pressure gauge for measuring circulating water pressure, is arranged on circulating water pipeline.
Preferably, in addition to it is used for the water supply tank for feeding recirculated water, is arranged on circulating water pipeline.
Preferably, a stop valve is also provided between the water supply tank and pressure gauge.
The utility model has advantages below compared with prior art：The utility model is that medium will be ground using closed cycle water
Coal machine entrance heat primary air partial heat is used for lifting chimney entrance flue gas temperature, reduces the same of coal pulverizer inlet heat primary air temperature
Shi Tigao chimney breast flue-gas temperatures, cold primary air flow can be largely reduced, improve air preheater heat exchange efficiency；It can improve simultaneously
The exhaust temperature of flue gas at chimney, flue gas condensing condensation is reduced, can help to eliminate " emitting white cigarette " phenomenon, improve power plant's peripheral ring
Border quality.
Brief description of the drawings
Fig. 1 is a kind of structural representation for the system that flue-gas temperature is adjusted using heat primary air waste heat of the utility model.
The heat of 33 water supply tank of cooler 1 heater, 2 circulating water pipeline, 3 water pump, 31 stop valve, 32 pressure gauge 34 is once
The exhanst gas outlet pipeline 7 of 4 heat primary air outlet conduit of wind inlet duct, 5 smoke inlet pipelines 6
Embodiment
Embodiment of the present utility model is elaborated below, the present embodiment using technical solutions of the utility model before
Put and implemented, give detailed embodiment and specific operating process, but the scope of protection of the utility model is unlimited
In following embodiments.
As shown in figure 1, the present embodiment include cooler 1, heater 2, circulating water pipeline 3, heat primary air inlet duct 4,
Heat primary air outlet conduit 5, smoke inlet pipelines 6, exhanst gas outlet pipeline 7, water pump 31；The circulating water pipeline 3 follows for enclosed
Ring structure, the cooler 1 are connected on circulating water pipeline 3, and heat primary air inlet duct 4 and heat primary air outlet conduit 5 connect
It is connected on cooler 1；The heater 2 is connected on circulating water pipeline 3, and smoke inlet pipelines 6 and exhanst gas outlet pipeline 7 connect
Heater 2；It is arranged on to provide circulating water power and adjust the water pump 31 of circulating water flow on circulating water pipeline.
The cooler 1 is provided with circulation water inlet, circulating water outlet and heat primary air entrance, heat primary air outlet；Institute
State circulation water inlet, circulating water outlet access circulating water pipeline 3, heat primary air entrance, heat primary air outlet access heat primary air
Inlet duct 4, heat primary air outlet conduit 5.
The heater 2 is provided with circulation water inlet, circulating water outlet and smoke inlet, exhanst gas outlet；The recirculated water
Entrance, circulating water outlet access circulating water pipeline 3, smoke inlet, exhanst gas outlet access smoke inlet pipelines 6, smoke outlet tube
Road 7.
The circulating water pipeline 3 also includes two stop valves 32, is separately positioned on the both ends of the water pump.The water pump is also
There is provided a bypass, is connected in parallel on described two both ends of stop valve 32.The water pump 31 is variable frequency pump.Also include being used to measure
The pressure gauge 33 of circulating water pressure, is arranged on circulating water pipeline 3.Also include being used for the water supply tank 34 for feeding recirculated water, set
On circulating water pipeline 3.A stop valve 32 is also provided between the water supply tank 34 and pressure gauge 33.
Utility model works process is as follows：
Heat primary air is drawn from the heat primary air pipeline of air preheater outlet, enters through heat primary air inlet duct 4 and cools down
Device 1, recirculated water also enter cooler 1 through circulating water pipeline 3, and heat primary air exchanges with circulating water heating, through overcooled heat once
Wind enters coal pulverizer through heat primary air outlet conduit 5, and recirculated water enters heater 2 after being heated, and flue gas is by smoke inlet pipelines 6
Into heater 2, the flue gas through circulating water heating enters chimney by exhanst gas outlet pipeline 7.Variable frequency pump 31 is used for realizing that water follows
Ring, and circulating water flow is adjusted, water supply tank 34 is used for feeding recirculated water.
Preferred embodiment of the present utility model is the foregoing is only, it is all at this not to limit the utility model
All any modification, equivalent and improvement made within the spirit and principle of utility model etc., should be included in the utility model
Protection domain within.
Claims (9)
1. a kind of system that flue-gas temperature is adjusted using heat primary air waste heat, it is characterised in that including cooler, heater, follow
Ring waterpipe, heat primary air inlet duct, heat primary air outlet conduit, smoke inlet pipelines, exhanst gas outlet pipeline, water pump；Institute
It is closed cycle structure to state circulating water pipeline, and the cooler is connected on circulating water pipeline, heat primary air inlet duct and heat
First air outlet conduit is connected on cooler；The heater is connected on circulating water pipeline, smoke inlet pipelines and flue gas
Outlet conduit connects heater；Circulating water pipeline is arranged on to provide circulating water power and adjust the water pump of circulating water flow
On.
A kind of 2. system that flue-gas temperature is adjusted using heat primary air waste heat according to claim 1, it is characterised in that institute
State cooler and be provided with circulation water inlet, circulating water outlet and heat primary air entrance, heat primary air outlet；The recirculated water enters
Mouth, circulating water outlet access circulating water pipeline, heat primary air entrance, heat primary air outlet access heat primary air inlet duct, heat
First air outlet conduit.
A kind of 3. system that flue-gas temperature is adjusted using heat primary air waste heat according to claim 1, it is characterised in that institute
State heater and be provided with circulation water inlet, circulating water outlet and smoke inlet, exhanst gas outlet；The circulation water inlet, recirculated water
Outlet access circulating water pipeline, smoke inlet, exhanst gas outlet access smoke inlet pipelines, exhanst gas outlet pipeline.
A kind of 4. system that flue-gas temperature is adjusted using heat primary air waste heat according to claim 1, it is characterised in that institute
Stating circulating water pipeline also includes two stop valves, is separately positioned on the both ends of the water pump.
A kind of 5. system that flue-gas temperature is adjusted using heat primary air waste heat according to claim 4, it is characterised in that institute
State water pump and be also provided with a bypass, be connected in parallel on described two stop valve both ends.
A kind of 6. system that flue-gas temperature is adjusted using heat primary air waste heat according to claim 1, it is characterised in that institute
It is variable frequency pump to state water pump.
7. a kind of system that flue-gas temperature is adjusted using heat primary air waste heat according to claim 1, it is characterised in that also
Including the pressure gauge for measuring circulating water pressure, it is arranged on circulating water pipeline.
8. a kind of system that flue-gas temperature is adjusted using heat primary air waste heat according to claim 7, it is characterised in that also
Including the water supply tank for feeding recirculated water, it is arranged on circulating water pipeline.
A kind of 9. system that flue-gas temperature is adjusted using heat primary air waste heat according to claim 8, it is characterised in that
A stop valve is also provided between the water supply tank and pressure gauge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720728278.XU CN206831547U (en) | 2017-06-21 | 2017-06-21 | A kind of system that flue-gas temperature is adjusted using heat primary air waste heat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720728278.XU CN206831547U (en) | 2017-06-21 | 2017-06-21 | A kind of system that flue-gas temperature is adjusted using heat primary air waste heat |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206831547U true CN206831547U (en) | 2018-01-02 |
Family
ID=60776666
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720728278.XU Expired - Fee Related CN206831547U (en) | 2017-06-21 | 2017-06-21 | A kind of system that flue-gas temperature is adjusted using heat primary air waste heat |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206831547U (en) |
-
2017
- 2017-06-21 CN CN201720728278.XU patent/CN206831547U/en not_active Expired - Fee Related
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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: 20180102 Termination date: 20180621 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |