CN206073048U - Waste heat recovery device - Google Patents
Waste heat recovery device Download PDFInfo
- Publication number
- CN206073048U CN206073048U CN201621071866.2U CN201621071866U CN206073048U CN 206073048 U CN206073048 U CN 206073048U CN 201621071866 U CN201621071866 U CN 201621071866U CN 206073048 U CN206073048 U CN 206073048U
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- heat exchanger
- heat
- recovery device
- condensate
- water heater
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Abstract
This utility model belongs to heat recovery system, and in particular to fire coal, gas-fired station boiler air, cigarette system flue gas heat recycle device.Waste heat recovery device, including at least one heat exchanger, the heat exchanger are arranged on the pipeline of heat to be recycled, and the heat exchanger is by heat transfer to be recycled to condensate；Also include condensation water heater, the condensation water heater is arranged between pressure fan outlet conduits, the water inlet of the condensation water heater is connected on the condensate total pipeline after gland heater, the outlet of the condensation water heater is connected on the condensate total pipeline of low plus outlet, this utility model adopts automatic control mode, and do not affected by season and environment, under the existing operational factor of boiler, newly-increased waste-heat recovery device does not interfere with the normal operation of boiler combustion system, air and flue system, desulfurization, dust pelletizing system and boiler other related systems.
Description
Technical field
This utility model belongs to heat recovery system, and in particular to fire coal, gas-fired station boiler air, cigarette system flue gas heat
Recycle device.
Background technology
Existing exhaust gas temperature is the design specification design according to traditional control acid dew etching condition, calculates exhaust gas temperature
The surplus of equipment protection is left.At present, the exhaust gas temperature of gas fired-boiler is about more than 100 DEG C, in this partial fume not only
Taken away most of sensible heat, while its latent heat is not also fully utilized, this is because exhaust gas temperature is subject to user place hot
Using conventional heat exchange mode, the restriction of requirement, cannot realize that the whole of condensation heat of flue gas reclaim, therefore, how further to reduce
Exhaust gas temperature, realizes the cascade utilization of the energy, realizes effects of energy saving and emission reduction, significant.
Utility model content
In order to solve the above-mentioned problems in the prior art, this utility model is filled there is provided a kind of heat recovery
Put.The technical problems to be solved in the utility model is achieved through the following technical solutions：
Waste heat recovery device, including：
At least one heat exchanger, the heat exchanger are arranged on the pipeline of heat to be recycled, and the heat exchanger will be to be recycled
Heat transfer to condensate；
Also include condensation water heater, the condensation water heater is arranged between pressure fan outlet conduits, the condensation
The water inlet of water heater is connected on the condensate total pipeline after gland heater, and the outlet of the condensation water heater connects
It is connected on the condensate total pipeline of low plus outlet.
Preferably, the heat exchanger includes at least one chimney heat exchanger and at least one air channel heat exchanger, the flue
Heat exchanger is arranged on the horizontal flue after air preheater；The air channel heat exchanger is arranged at the outlet conduits of blower fan.
Preferably, the air channel heat exchanger is two, is separately positioned on pressure fan, primary air fan outlet conduits.
Preferably, the air channel heat exchanger is four, is two air channel heat exchangers, two secondary air duct heat exchange respectively
Device；Described two air channel heat exchangers and two secondary air duct heat exchangers are separately positioned on primary air fan and pressure fan outlet
On vertical air plenums.
Preferably, the chimney heat exchanger is four, is separately positioned on the horizontal flue before cleaner unit.
Preferably, the pipeline of the heat exchanger is provided with a steam flow regulating valve, and the steam flow regulating valve is located at Ventilator Room
On interior steam main.
Preferably, the pipeline of the condensation water heater is provided with steam flow regulating valve, and the steam flow regulating valve is used to adjust
The setting value of exhaust gas temperature and the deviation of actual value.
The beneficial effects of the utility model：
1. under the existing operational factor of boiler, newly-increased waste-heat recovery device do not interfere with boiler combustion system, air and flue system,
The normal operation of desulfurization, dust pelletizing system and boiler other related systems.
2. waste-heat recovery device adopts automatic control mode, it is ensured that cold and heat source load variations, coal type change and season are become
The adaptability of change；Can put into the change of exhaust gas temperature and sulfur content in coal amount or out of service；Can ensure that overall process pair
The heat absorbing heat exchanger of fume side realizes that intellectuality is reliably controlled, and cold end corrosion does not occur.
3. waste-heat recovery device work is not affected by season and environment, is adjusted by Automatic Optimal, can all the time with most
Excellent UTILIZATION OF VESIDUAL HEAT IN mode is heated to inlet air of boiler or condensate, is realized maximized cascaded utilization of energy, is made the circulation of generating
The thermal efficiency reaches maximum, realizes the maximization of energy-saving and emission-reduction benefit.
This utility model is described in further details below with reference to drawings and Examples.
Description of the drawings
Fig. 1 is cigarette vapour flow chart of the present utility model.
In accompanying drawing 1.～9. represent respectively：
1. to a right air channel；2. to the first from left time air channel；3. to right secondary air duct；4. to left secondary air duct；5. from condensation
Water；6. gas trap is returned from former steam air heater flowing water case；7. from former heating air box steam supply；8. export to low pressure condensation water；9. from condensate
Pump discharge
Specific embodiment
Technological means and effect that predetermined purpose is taken is reached for this utility model is expanded on further, below in conjunction with accompanying drawing
And embodiment is to specific embodiment of the present utility model, architectural feature and its effect, describe in detail as follows.
Embodiment 1：
Reference Fig. 1, waste heat recovery device, including two air channel heat exchangers, 1, two secondary air duct heat exchangers 1,
Four chimney heat exchangers, 1, condensation water heater 2；1 point of two air channel heat exchangers 1 and two secondary air duct heat exchangers
It is not arranged on the vertical air plenums of primary air fan and pressure fan outlet；Before four chimney heat exchangers 1 are separately positioned on cleaner unit
On horizontal flue, chimney heat exchanger 1, the effect of air channel heat exchanger 1 are to condensate by heat transfer to be recycled；Condensate adds
Hot device 2 is arranged between pressure fan outlet conduits, and the water inlet of condensation water heater 2 is connected to the condensation after gland heater 2
On supply mains road, the outlet of condensation water heater 2 is connected on the condensate total pipeline of low plus outlet.
It should be noted that：Chimney heat exchanger 1 can be 2,6,5,1, any values such as 8, as long as not shadow
The operation of the whole waste-heat recovery device of sound.In the same manner, air channel heat exchanger 1 is not affecting whole waste-heat recovery device normally to run
On the premise of can also be any value.It is of course also possible to chimney heat exchanger 1, air channel heat exchanger 1 are installed in the way of selecting one
On pipe network.
Embodiment 2：
Part unlike the embodiments above is heat exchanger 1, steam flow tune is mounted on the pipeline of condensation water heater 2
Section valve, the steam flow regulating valve of heat exchanger 1 are located on the steam main in Ventilator Room；The steam flow regulating valve position of condensation water heater 2
On the pipeline of condensation water heater 2.
1 outlet vapor main pipe of chimney heat exchanger is provided with steam flow regulating valve, when the phase transition parameter (pressure and temperature pair for measuring
Should) less than setting value when, barometric damper is turned down, otherwise opens big, so as to control the steady of 1 wall temperature of phase transition parameter and chimney heat exchanger
It is fixed.Steam main can be access to different low-temperature receiver heat exchangers 1 simultaneously, and system can be according to the setting of ambient temperature and exhaust gas temperature
Value, automatically adjusts the evaporation capacity for engine of different low-temperature receivers, so as to reach optimal utilization rate of waste heat.
Four 1 outlet vapor main pipes of chimney heat exchanger are provided with a steam flow regulating valve, and the steam being arranged in Ventilator Room is female
Guan Shang.Piping-main scheme simplifies system, also increases stablizing for system.2 are controlled respectively for water regulating valve to enter by 2 water-level gauges
The water level regulation of row chimney heat exchanger 1, two water-level gauges are indicated respectively under 4 upper units and 4 of 4 chimney heat exchangers 1
Portion's unit.8 heat exchange units of chimney heat exchanger 1 are all independently provided with isolating valve, in order in certain cell failure by it from being
System excision.8 separation valve doors point left and right sides that chimney heat exchanger 1 is imported and exported, centralized arrangement on blower fan roof, after being aggregated into main pipe
Entered above the air channel heat exchanger 1 of Ventilator Room by Ventilator Room jacking.
Embodiment 3：
Chimney heat exchanger 1 (sub-control phase-change heat-exchanger heat sink) is installed, in air-supply on the horizontal flue after air preheater
Machine and primary air fan outlet conduits position install air channel heat exchanger 1 (sub-control phase-change heat-exchanger heat-releasing device) additional, in zero meter of pressure fan
Condensation water heater 2 is set between outlet conduits.In 1 heat sink of sub-control phase-change heat-exchanger, minimum saturated-steam temperature is set as
115 DEG C, higher than 5 DEG C of flue gas acid dew point, exhaust gas temperature is reduced to into 130 DEG C from average 150 DEG C, reclaims heat and enter empty pre-
The primary and secondary air of device and the low condensate for adding of bypass 1 to 2, heat the heat of wind and water according to exhaust gas temperature and ambient temperature
Distribution is adjusted voluntarily.
1 point of flue heat source heat exchanger be 4 groups be arranged in cleaner unit before horizontal flues on, center of gravity is in Ventilator Room near removing
In the support beam of dirt device, if mounting platform, and carry out crossbeam reinforcing.Flue expansion joint position is constant, and heat exchanger 1 is using slip
Support.2 air channel low-temperature receiver heat exchangers 1 and 2 secondary air duct low-temperature receiver heat exchangers 1 are arranged in primary air fan and pressure fan
On the vertical air plenums of outlet.
In order to summer further reduces exhaust gas temperature, the steam that chimney heat exchanger 1 is produced by the system is used to heat steam turbine
Condensate, the steam consumption of condensation water heater 2 is the 60% of waste-heat recovery device peak load.2 entrance of condensation water heater
Condensate is connected on the condensation supply mains after gland heater 2, the condensate of the outlet of condensation water heater 2 be connected to No. 2 it is low
Plus on the condensation supply mains of outlet.Condensation water heater 2 is provided with steam flow regulating valve, its aperture according to the setting value of exhaust gas temperature with
The deviation control of actual value.
The equipment such as condensation water heater 2, vapour-liquid heat exchanger 1 and water tank are arranged between zero meter of air channel heat exchanger 1,2 water
Case is arranged in nearby 0.5 meter of air channel, and 2 water pumps are arranged in 0 meter near water tank of ground.
Above content is with reference to specific preferred implementation further detailed description of the utility model, it is impossible to
Identification is of the present utility model to be embodied as being confined to these explanations.For the ordinary skill of this utility model art
For personnel, without departing from the concept of the premise utility, some simple deduction or replace can also be made, should be all regarded
To belong to protection domain of the present utility model.
Claims (7)
1. waste heat recovery device, it is characterised in that include：
At least one heat exchanger, the heat exchanger are arranged on the pipeline of heat to be recycled, and the heat exchanger is by warm to be recycled
Amount passes to condensate；
Also include condensation water heater, the condensation water heater is arranged between pressure fan outlet conduits, and the condensate adds
The water inlet of hot device is connected on the condensate total pipeline after gland heater, and the outlet of the condensation water heater is connected to
On the condensate total pipeline of low plus outlet.
2. waste heat recovery device according to claim 1, it is characterised in that the heat exchanger includes at least one cigarette
Road heat exchanger and at least one air channel heat exchanger, the chimney heat exchanger are arranged on the horizontal flue after air preheater；The wind
Road heat exchanger is arranged at the outlet conduits of blower fan.
3. waste heat recovery device according to claim 2, it is characterised in that the air channel heat exchanger is two, point
It is not arranged on pressure fan, primary air fan outlet conduits.
4. waste heat recovery device according to claim 2, it is characterised in that the air channel heat exchanger is four, point
It is not two air channel heat exchangers, two secondary air duct heat exchangers；Described two air channel heat exchangers and two secondary wind
Road heat exchanger is separately positioned on the vertical air plenums of primary air fan and pressure fan outlet.
5. waste heat recovery device according to claim 2, it is characterised in that the chimney heat exchanger is four, point
It is not arranged on the horizontal flue before cleaner unit.
6. the waste heat recovery device according to any one of claim 1 to 5, it is characterised in that the pipe of the heat exchanger
Road is provided with a steam flow regulating valve, and the steam flow regulating valve is located on the steam main in Ventilator Room.
7. the waste heat recovery device according to any one of claim 1 to 5, it is characterised in that the condensate heating
The pipeline of device is provided with steam flow regulating valve, and the setting value that the steam flow regulating valve is used to adjust exhaust gas temperature is inclined with actual value
Difference.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621071866.2U CN206073048U (en) | 2016-09-22 | 2016-09-22 | Waste heat recovery device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621071866.2U CN206073048U (en) | 2016-09-22 | 2016-09-22 | Waste heat recovery device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206073048U true CN206073048U (en) | 2017-04-05 |
Family
ID=58438765
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621071866.2U Expired - Fee Related CN206073048U (en) | 2016-09-22 | 2016-09-22 | Waste heat recovery device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206073048U (en) |
-
2016
- 2016-09-22 CN CN201621071866.2U patent/CN206073048U/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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170405 Termination date: 20170922 |