CN205191921U - Device is retrieved and reduces discharging to waste heat of boiler flue gas doublestage - Google Patents
Device is retrieved and reduces discharging to waste heat of boiler flue gas doublestage Download PDFInfo
- Publication number
- CN205191921U CN205191921U CN201520821099.1U CN201520821099U CN205191921U CN 205191921 U CN205191921 U CN 205191921U CN 201520821099 U CN201520821099 U CN 201520821099U CN 205191921 U CN205191921 U CN 205191921U
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- China
- Prior art keywords
- boiler
- heat
- pipeline
- waste heat
- heat recovery
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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.)
- Withdrawn - After Issue
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
- Y02P80/15—On-site combined power, heat or cool generation or distribution, e.g. combined heat and power [CHP] supply
Abstract
The utility model relates to a device is retrieved and reduces discharging to waste heat of boiler flue gas doublestage, including boiler and the thermal combustor of supply boiler, the boiler passes through the main exhaust gas pipe way and communicates with waste heat recovery device, chimney in proper order, main exhaust gas pipe between waste heat recovery device and the chimney says that it all communicates with the mixing column to be equipped with branch's admission line, the exhaust duct of branch and branch's admission line, the exhaust duct of branch, the mixing column passes through pipeline and water tank intercommunication, still including respectively with the heat pump of mixing column, water tank intercommunication to and respectively with main inlet channel, the main outlet conduit of heat pump intercommunication, main inlet channel, main outlet conduit equally divide and to communicate with boiler, waste heat recovery device. Superior effect lie in: adopt waste heat recovery device and mixing column to carry out waste heat recovery, can reduce the temperature of boiler flue gas to 35, fully retrieve the waste heat in the flue gas, energy utilization rate highly and the consumption little, the running cost hangs down, the fractional energy saving reaches more than 8%.
Description
Technical field
The utility model relates to heating system technical field, is specifically related to a kind of residual heat from boiler fume twin-stage and reclaims and emission reduction device.
Background technology
In current heating industry, waste-heat recovery device is installed on flue by some producer, in waste-heat recovery device, tube bank is set, boiler feed water is made to enter boiler by the tube bank in waste-heat recovery device, when the flue gas of discharge is by after waste-heat recovery device, heat exchange can be carried out with ducted water, reduce the temperature of flue gas on the one hand, improve the temperature into water on the other hand.Boiler is by after installation waste-heat recovery device, smoke evacuation exit exhaust gas temperature can be reduced to about 80 degree, flue gas dew point temperature is 58 degree, therefore waste-heat recovery device only make use of the sensible heat in flue gas, and the gasification latent heat loss that the steam in flue gas carries is serious, energy utilization rate is on the low side, and energy consumption is high.
Publication number be CN104344730A patent discloses flue gas waste heat recovery system, this system comprises: first-class heat exchanger, secondary heat exchanger, water circulating pump, automatic bleeding device, described first-class heat exchanger is installed on exhanst gas outlet pipeline, the secondary heat exchanger be connected with first-class heat exchanger is installed on the inlet air side of drying air blast, and the water circulation system that I and II heat exchanger is formed has water circulating pump; The hot water pipeline of described first-class heat exchanger after heat exchange is provided with level pressure expansion tank, and automatic bleeding device is installed on level pressure expansion tank.Described level pressure expansion tank is connected with nitrogen pressurizing device, demineralized water water replanishing device, self-draining arrangement; Described water circulating pump pump adopts two feed pumps; This system also comprises: control device, and it is connected to water circulating pump, nitrogen pressurizing device, demineralized water water replanishing device, self-draining arrangement, automatic bleeding device; Signal output part is connected to the temperature sensor of control device, and its end of probe is installed on exhanst gas outlet pipeline; Signal output part is connected to the pressure-bearing liquid level gauge of control device, and it is installed on level pressure expansion tank; Signal output part is connected to the pressure sensor of control device, and it is installed on level pressure expansion tank.This flue gas waste heat recovery system complex structure, poor practicability.
Utility model content
In order to overcome defect of the prior art, the purpose of this utility model is that proposing a kind of residual heat from boiler fume twin-stage reclaims and emission reduction device.
The utility model is achieved through the following technical solutions:
A kind of residual heat from boiler fume twin-stage reclaims and emission reduction device, and comprise the combustor of boiler and supply boiler heat, it is characterized in that, boiler is communicated with waste-heat recovery device, chimney successively by main exhaust pipeline; Main exhaust pipeline between waste-heat recovery device with chimney is provided with branch's admission line, bypass vent pipeline and branch's admission line, bypass vent pipeline are all communicated with mixing column, described mixing column is communicated with water tank by pipeline, also comprise the heat pump be communicated with mixing column, water tank respectively, and the main water pipeline be communicated with heat pump respectively, primary flow pipe road, described main water pipeline, primary flow pipe road are communicated with boiler, waste-heat recovery device respectively.
Described technical scheme is preferably, and described bypass vent pipeline is provided with blower fan.Described blower fan is used for the flue gas in mixing column to enter in main exhaust pipeline, is conducive to forming subnormal ambient in mixing column, and then makes flue gas enter mixing column through branch's admission line to carry out heat exchange.
Described technical scheme is preferably, and the pipeline between heat pump and water tank is provided with circulating pump.Water pump in water tank to heat pump, is accelerated the circulation rate of liquid in water tank by described circulating pump.
Described technical scheme is preferably, and the main exhaust pipeline between described waste-heat recovery device and chimney is provided with SO 2 sensor, nitrogen oxide sensor, and described SO 2 sensor, nitrogen oxide sensor are all connected with controller.
Described technical scheme is preferably, and described controller is connected with warning device.
Described technical scheme is preferably, and described warning device adopts one or more in buzzer, loudspeaker, vibrator, siren, alarm lamp.
Compared with prior art, superior effect described in the utility model is: adopt waste-heat recovery device and mixing column to carry out waste heat recovery, the temperature of boiler smoke can be reduced to 35 °, waste heat in abundant recovered flue gas, energy utilization rate is high and consumption is little, operating cost is low, and fractional energy savings reaches more than 8%.
Accompanying drawing explanation
Fig. 1 is the structured flowchart of described a kind of residual heat from boiler fume twin-stage recovery and emission reduction device.
Description of reference numerals is as follows:
1-boiler, 11-main exhaust pipeline, 12-branch admission line, 13-bypass vent pipeline, 14-main water pipeline, 15-primary flow pipe road, 2-waste-heat recovery device, 3-chimney, 4-mixing column, 5-water tank, 6-heat pump, 7-blower fan, 8-circulating pump.
Detailed description of the invention
Below in conjunction with accompanying drawing and detailed description of the invention, the utility model is described in further detail.
As shown in Figure 1, a kind of residual heat from boiler fume twin-stage described in the utility model reclaims and emission reduction device, comprise the combustor (not shown) of boiler 1 and supply boiler 1 heat, boiler 1 is communicated with waste-heat recovery device 2, chimney 3 successively by main exhaust pipeline 11; Main exhaust pipeline 11 between waste-heat recovery device 2 with chimney 3 is provided with branch's admission line 12, bypass vent pipeline 13 and branch's admission line 12, bypass vent pipeline 13 are all communicated with mixing column 4, described mixing column 4 is communicated with water tank 5 by pipeline, also comprise the heat pump 6 be communicated with mixing column 4, water tank 5 respectively, and the main water pipeline 14, the primary flow pipe road 15 that are communicated with heat pump 6 respectively, described main water pipeline 14, primary flow pipe road 15 are communicated with boiler 1, waste-heat recovery device 2 respectively.In the above-described embodiments, described combustor is connected with air intake duct and natural gas air inlet pipe respectively.
In the above-described embodiments, described bypass vent pipeline 13 is provided with blower fan 7.Described blower fan 7, for being entered in main exhaust pipeline 11 by the flue gas in mixing column 4, is conducive to forming subnormal ambient in mixing column 4, and then makes flue gas enter mixing column 4 through branch's admission line 12 to carry out heat exchange.Pipeline between described heat pump 6 and water tank 5 is provided with circulating pump 8.Water pump in water tank 5 to heat pump 6, is accelerated the circulation rate of liquid in described water tank 5, is improve heat exchange efficiency by described circulating pump 8.
In the above-described embodiments, main exhaust pipeline 11 between described waste-heat recovery device 2 and chimney 3 is provided with SO 2 sensor, nitrogen oxide sensor (not shown), and described SO 2 sensor, nitrogen oxide sensor are all connected with controller (not shown).Described controller adopts ATmega64 processor.Described controller is connected with warning device (not shown); Further, described warning device adopts one or more in buzzer, loudspeaker, vibrator, siren, alarm lamp.Described SO 2 sensor, nitrogen oxide sensor, controller, warning device are existing equipment.In the present embodiment; described SO 2 sensor, nitrogen oxide sensor discharge the concentration of flue gas for detecting, when the content of sulfur dioxide in flue gas, nitrogen oxygen content exceed standard, described controller controls warning device and sends alarm command; for reminding operating personnel, utilize atmosphere protection.
When specifically using, the flue gas that described boiler 1 produces is at about 120 °, because described waste-heat recovery device 2 is communicated with main water pipeline 14, primary flow pipe road 15 respectively, flue gas transfers heat in the water in main water pipeline 14, primary flow pipe road 15 when waste-heat recovery device 2, and now the temperature of flue gas is reduced to 75 °; Then flue gas enters in mixing column 4 through branch's admission line 12, the heat of flue gas is passed to the recirculated water of mixing column 4 inside, and the temperature of flue gas is reduced to 35 °; Owing to being provided with blower fan 7 at bypass vent pipeline 13 place, described blower fan 7 for being entered in main exhaust pipeline 11 by the flue gas in mixing column 4, and then enters air through chimney 3.Water in main water pipeline 14 described in the utility model enters waste-heat recovery device 2, boiler 1, heat pump 3 respectively successively, absorbs that heat is laggard becomes owner of outlet conduit 15 step by step; Recirculated water in described mixing column 4 and flue gas carry out heat exchange, and then the heat in absorption flue gas, circulating water temperature after heat exchange raises, be specially and be increased to 30 ° by original 20 °, recirculated water after intensification enters in water tank 5, and entering in heat pump 6 through pipeline, the heat release in heat pump 6 of described recirculated water, is back to after the temperature of heat release Posterior circle water is reduced to 20 ° by 30 ° in mixing column 4 and forms circulating water loop; Described recirculated water, through the process of heat absorption, heat release repeatedly, achieves the heat transmission between mixing column 4 and heat pump 6.Heat in described heat pump 6 absorption cycle water, through consuming a small amount of electric energy, as the water in main water pipeline 14 is heated to 50 ° by 40 °, and the temperature of flue gas temperature after two-stage heat exchange is reduced to 35 ° in the present embodiment, a waste heat part in flue gas enters in primary flow pipe road 15 through waste-heat recovery device 2, another part enters in primary flow pipe road 15 through mixing column 4 and heat pump 6, achieve the waste heat making full use of flue gas, improve the energy utilization rate of heating system and reduce energy resource consumption, reducing operating cost.
The utility model is not limited to above-mentioned embodiment, and when not deviating from flesh and blood of the present utility model, any distortion that it may occur to persons skilled in the art that, improvement, replacement all fall into scope of the present utility model.
Claims (6)
1. residual heat from boiler fume twin-stage reclaims and an emission reduction device, and comprise the combustor of boiler and supply boiler heat, it is characterized in that, boiler is communicated with waste-heat recovery device, chimney successively by main exhaust pipeline; Main exhaust pipeline between waste-heat recovery device with chimney is provided with branch's admission line, bypass vent pipeline and branch's admission line, bypass vent pipeline are all communicated with mixing column, described mixing column is communicated with water tank by pipeline, also comprise the heat pump be communicated with mixing column, water tank respectively, and the main water pipeline be communicated with heat pump respectively, primary flow pipe road, described main water pipeline, primary flow pipe road are communicated with boiler, waste-heat recovery device respectively.
2. residual heat from boiler fume twin-stage according to claim 1 reclaims and emission reduction device, and it is characterized in that, described bypass vent pipeline is provided with blower fan.
3. residual heat from boiler fume twin-stage according to claim 1 reclaims and emission reduction device, and it is characterized in that, the pipeline between heat pump and water tank is provided with circulating pump.
4. residual heat from boiler fume twin-stage according to claim 1 reclaims and emission reduction device, it is characterized in that, main exhaust pipeline between described waste-heat recovery device and chimney is provided with SO 2 sensor, nitrogen oxide sensor, and described SO 2 sensor, nitrogen oxide sensor are all connected with controller.
5. residual heat from boiler fume twin-stage according to claim 4 reclaims and emission reduction device, and it is characterized in that, described controller is connected with warning device.
6. residual heat from boiler fume twin-stage according to claim 5 reclaims and emission reduction device, it is characterized in that, described warning device adopts one or more in buzzer, loudspeaker, vibrator, siren, alarm lamp.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520821099.1U CN205191921U (en) | 2015-10-22 | 2015-10-22 | Device is retrieved and reduces discharging to waste heat of boiler flue gas doublestage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520821099.1U CN205191921U (en) | 2015-10-22 | 2015-10-22 | Device is retrieved and reduces discharging to waste heat of boiler flue gas doublestage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205191921U true CN205191921U (en) | 2016-04-27 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520821099.1U Withdrawn - After Issue CN205191921U (en) | 2015-10-22 | 2015-10-22 | Device is retrieved and reduces discharging to waste heat of boiler flue gas doublestage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205191921U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105180446A (en) * | 2015-10-22 | 2015-12-23 | 北京志诚宏业智能控制技术有限公司 | Boiler exhaust gas waste heat two-stage recovery and emission reduction device |
| CN108826340A (en) * | 2018-07-23 | 2018-11-16 | 福建省三明长兴机械制造有限公司 | A kind of boiler afterheat reclaimer and its recovery method |
-
2015
- 2015-10-22 CN CN201520821099.1U patent/CN205191921U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105180446A (en) * | 2015-10-22 | 2015-12-23 | 北京志诚宏业智能控制技术有限公司 | Boiler exhaust gas waste heat two-stage recovery and emission reduction device |
| CN105180446B (en) * | 2015-10-22 | 2018-08-21 | 北京志诚宏业智能控制技术有限公司 | A kind of recycling of residual heat from boiler fume twin-stage and emission reduction device |
| CN108826340A (en) * | 2018-07-23 | 2018-11-16 | 福建省三明长兴机械制造有限公司 | A kind of boiler afterheat reclaimer and its recovery method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160427 Effective date of abandoning: 20180821 |