CN205939216U - Biomass boiler air heater - Google Patents
Biomass boiler air heater Download PDFInfo
- Publication number
- CN205939216U CN205939216U CN201620818174.3U CN201620818174U CN205939216U CN 205939216 U CN205939216 U CN 205939216U CN 201620818174 U CN201620818174 U CN 201620818174U CN 205939216 U CN205939216 U CN 205939216U
- Authority
- CN
- China
- Prior art keywords
- pressure
- air preheater
- gas cooler
- low
- heat
- 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.)
- Active
Links
Classifications
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
Landscapes
- Air Supply (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The utility model discloses a biomass boiler air heater, including low pressure air pre -heater, low pressure gas cooler, low pressure circulating water pump, highly -compressed air pre -heater, high -pressure gas cooler, connection piping, the air input of low pressure air pre -heater links to each other with the low pressure air -blower, and the air output all links to each other with biomass boiler low pressure wind system, and the air input of highly -compressed air pre -heater links to each other with high -pressure fan, and the air output all links to each other with biomass boiler high pressure wind system, high pressure gas cooler, low pressure gas cooler set up in biomass boiler afterbody flue according to the flue gas flow direction order, the heat -transfer cycle is set up through low pressure circulating water pump to low pressure air pre -heater, low pressure gas cooler, and the heat -transfer cycle is set up through the pressure head that the bypass of biomass boiler feedwater piping provided to highly -compressed air pre -heater, high -pressure gas cooler. The utility model provides a heat transfer facial canal low temperature corrosion's problem in the biomass boiler afterbody flue.
Description
Technical field
This utility model is related to a kind of air preheater, relates more specifically to a kind of biomass boiler air preheater.
Background technology
Air preheater is the heat-exchange apparatus that will enter the air preheat before boiler to uniform temperature.It is generally arranged at pot
In stove back-end ductwork, realize the heating to air by flue gas, the heat-transfer area tube bank wall temperature of smoke outlet in running
The acid dew-point temperature of flue gas can be reached, cause serious cold end corrosion phenomenon, the stable and high effective operation of impact steam generator system.
Utility model content
The purpose of the present utility model is to provide a kind of biomass boiler air preheater, and this biomass boiler air is pre-
Hot device solves the problems, such as heat transfer facial canal cold end corrosion in biomass boiler back-end ductwork.
In order to realize foregoing invention purpose, a kind of biomass boiler air preheater of the present utility model, including low pressure sky
Air preheater, low pressure gas cooler, low pressure recycle water pump, pressure-air preheater, high pressure gas cooler, connection piping；
The air input of low-pressure air preheater is connected with low pressure blower, air outfan and biomass boiler low pressure wind system phase
Even, the air input of pressure-air preheater is connected with high pressure blower, air outfan and biomass boiler high-pressure blast system
System is connected；High pressure gas cooler, low pressure gas cooler are set in sequence in biomass boiler afterbody according to flow of flue gas direction
In flue；Low-pressure air preheater, low pressure gas cooler set up heat transfer cycle by low pressure recycle water pump, and pressure-air is pre-
Hot device, high pressure gas cooler set up heat transfer cycle by the pressure head that the bypass of biomass boiler feed piping provides.
If described low pressure gas cooler, high pressure gas cooler include import header, outlet header Heavenly Stems and Earthly Branches heat-transfer area pipe
Bundle, described heat-transfer area tube bank is equipped with described import header, outlet header constitutes coil group.
Described low-pressure air preheater, pressure-air preheater are made up of housing, heat-exchange tube group, described heat-exchange tube group
If including import header, the tube bank of outlet header Heavenly Stems and Earthly Branches heat-transfer area, described heat-transfer area tube bank is equipped with described import header, outlet collection
Case constitutes snakelike heat-exchange tube group.
Described low pressure gas cooler, high pressure gas cooler heat-transfer area are restrained as light pipe, extended surface tube or membrane tube；Described
Heat-transfer area is restrained in-line or is staggered in arrangement.
Described low-pressure air preheater, pressure-air preheater heat-transfer area are restrained as extended surface tube；Described heat-transfer area tube bank is suitable
Arrange or be staggered in arrangement.
Described low pressure gas cooler heat-transfer area Bundle material is ND steel.
Described low-pressure air preheater, pressure-air preheater heat-exchange tube group entrance point are provided with regulating valve.
Described low-pressure air preheater, pressure-air preheater air input are provided with regulating valve.
Using the helix fin tubular air preheater of technical solution of the present invention, by low-pressure airs different for pressure head, high-pressure blast
Arranged apart, individually it is arranged in outside biomass boiler flue, using feedwater heating air.High and low pressure air preheater be in adverse current,
Level, suitable（Wrong）Row arrangement, air flows through from bottom to top from pipe, and feedwater is flow through in pipe.Air preheater is divided into high pressure empty
Air preheater and low-pressure air preheater, are derived from the high-temperature water of bypass before boiler feedwater piping regulating valve in pressure-air preheater
Enter in high pressure gas cooler after heat exchange cooling and heat, then be incorporated to feed piping and enter boiler economizer；Low-pressure air
Preheater, on low pressure recycle pipeline, is fed water from oxygen-eliminating device by low pressure recycle water pump, is derived from deoxygenation in low-pressure air preheater
In device, the high-temperature water of feedwater enters in low pressure gas cooler after heat exchange cooling and heats, then foldback returns oxygen-eliminating device and participates in following
Ring.High and low pressure gas cooler heating surface bank is in adverse current, level, suitable（Wrong）Column is arranged in biomass boiler afterbody convection current cigarette
In road.High and low pressure air preheater is arranged in beyond flue, by the way of water-cooling heating, is simultaneously from low-pressure air preheating
The water of device uniform temperature（About 90 DEG C）Enter back into the heating of low pressure gas cooler it is ensured that biomass boiler smoke outlet conducts heat
The wall temperature of tube bank is higher than acid dew point, the occurrence of effectively avoid heating surface bank cold end corrosion in back-end ductwork, significantly prolongs
Grow service life of equipment, reduce the O＆M cost of steam generator system.
Brief description
Fig. 1 is the flow process simplified schematic diagram of the preferred embodiment that this utility model provides；
In figure：1. low-pressure air preheater, 2. low pressure gas cooler, 3. low pressure recycle water pump, 4. pressure-air preheating
Device, 5. high pressure gas cooler, 6. connect piping, 7. low-pressure air preheater air input, 8. low-pressure air preheater is empty
Gas outfan, 9. pressure-air preheater air input, 10. pressure-air preheater air outfan, 11. biomass boilers
Back-end ductwork, 12. is low, high pressure gas cooler import header, and 13. is low, high pressure gas cooler outlet header, 14. low, high pressure
Gas cooler heat-transfer area is restrained, 15. coil groups, and 16. is low, pressure-air preheater import header, 17. low, pressure-airs
Preheater outlet header, 18. is low, the tube bank of pressure-air preheater heat-transfer area, 19. snakelike heat-exchange tube groups, and 20. is low, high pressure is empty
Air preheater housing, 21. waterway regulating valves, 22. air road regulating valves, 23. boiler feedwater pipings, 24. oxygen-eliminating devices.
Specific embodiment
Accompanying drawing discloses the structural representation of preferred embodiment involved by this utility model without limitation；Below with reference to
Accompanying drawing explains the technical solution of the utility model.
As shown in figure 1, this biomass boiler air preheater, including low-pressure air preheater 1, low pressure gas cooler
2nd, low pressure recycle water pump 3, pressure-air preheater 4, high pressure gas cooler 5, connection piping 6；Low-pressure air preheater air
Input 7 is connected with low pressure blower, and air outfan 8 is connected with biomass boiler low pressure wind system, pressure-air preheater
Air input 9 is connected with high pressure blower, and air outfan 10 is connected with biomass boiler high pressure wind system；High pressure flue gas is cold
But device 5, low pressure gas cooler 2 are set in sequence in biomass boiler back-end ductwork 11 according to flow of flue gas direction；Low pressure is empty
Air preheater 1, low pressure gas cooler 2 set up heat transfer cycle, pressure-air preheater 4, high pressure by low pressure recycle water pump 3
Gas cooler 5 sets up heat transfer cycle by the pressure head that biomass boiler feed piping 22 bypass provides.
Described low pressure gas cooler 2, high pressure gas cooler 5 include low, high pressure gas cooler import header 12,
If low, high pressure gas cooler outlet header 13 Heavenly Stems and Earthly Branches are low, high pressure gas cooler heat-transfer area tube bank 14, described low, high pressure cigarette
Equipped described low, the high pressure gas cooler import header 12 of Gas Cooler heat-transfer area tube bank 14, low, high pressure gas cooler outlet
Header 13 constitutes coil group 15.
Described low-pressure air preheater 1, pressure-air preheater 4 are made up of housing 20, heat-exchange tube group 19, and described heat is handed over
If changing pipe group 19 to include that import header 16, outlet header 17 Heavenly Stems and Earthly Branches are low, pressure-air preheater heat-transfer area tube bank 18, described low,
Pressure-air preheater heat-transfer area tube bank 18 is equipped with described import header 16, outlet header 17 constitutes snakelike heat-exchange tube group 19.
Described low pressure gas cooler 2, high pressure gas cooler 5 are low, high pressure gas cooler heat-transfer area tube bank 14 is light
Pipe, extended surface tube or membrane tube；Described low, high pressure gas cooler heat-transfer area is restrained 14 in-lines or is staggered in arrangement.
Described low-pressure air preheater 1, pressure-air preheater 4 are low, pressure-air preheater heat-transfer area tube bank 18 is fin
Piece pipe；Described low, pressure-air preheater heat-transfer area is restrained 18 in-lines or is staggered in arrangement.
Described low pressure gas cooler 2 is low, high pressure gas cooler heat-transfer area restrains 14 materials for ND steel.
Described low-pressure air preheater 1, pressure-air preheater 19 groups of entrance points of 4 heat-exchange tube are provided with regulating valve 21.
Described low-pressure air preheater 1, pressure-air preheater 4 air input are provided with regulating valve 22.
In FIG, helix fin tubular air preheater（1、4）, it is divided into pressure-air preheater 4 and low-pressure air preheating
Device 1, will be arranged apart to low-pressure airs different for pressure head, high-pressure blast, is individually arranged in outside biomass boiler flue 11, is added using feedwater
Hot-air.High and low pressure air preheater（4、1）In adverse current, level, suitable（Wrong）Row arrangement, air is empty from low, high pressure from bottom to top
Flow through outside air preheater heat-transfer area tube bank 18, feedwater is restrained in 18 from low, pressure-air preheater heat-transfer area and flow through.Pressure-air
The high-temperature water bypassing before being derived from boiler feedwater piping 23 regulating valve in preheater 4, after cooling down with air heat exchange, enters high pressure
Heat in gas cooler 5, then be incorporated to feed piping 23 and enter boiler economizer；Low-pressure air preheater 1 is in low pressure recycle pipe
Lu Shang, is fed water from oxygen-eliminating device 24 by low pressure recycle water pump 3, is derived from the height of feedwater in oxygen-eliminating device 24 in low-pressure air preheater 1
Warm water, after being cooled down with air heat exchange, is entered in low pressure gas cooler 2 and heats, then foldback returns oxygen-eliminating device 24 and participates in circulation.
High and low pressure gas cooler（5、2）Heating surface bank 14 is in adverse current, level, suitable（Wrong）Column is arranged in biomass boiler afterbody pair
In flow flue 11.High and low pressure air preheater（4、1）It is arranged in beyond flue, by the way of water-cooling heating, be simultaneously from low
The water of pressure air preheater 1 uniform temperature（About 90 DEG C）Enter back into low pressure gas cooler 2 and heat it is ensured that biomass boiler cigarette
The wall temperature of gas outlet heating surface bank 14 is higher than acid dew point, effectively avoids heating surface bank 14 cold end corrosion feelings in back-end ductwork
The generation of condition, substantially prolongs service life of equipment, reduces the O＆M cost of steam generator system.
Low, pressure-air preheater（1、4）And low, high pressure gas cooler（2、5）, cryogenic media and high-temperature medium are each other
Along contrary direction flowing, constitute a kind of high counter current heat exchange of heat recovery efficiency.
It is merely to illustrate reality of the present utility model above in conjunction with this utility model preferred embodiment described by accompanying drawing
Apply mode, not as the restriction to aforementioned utility model purpose and claims content and scope, every foundation is originally
The technical spirit of utility model, to any simple modification made for any of the above embodiments, equivalent variations and modification, all still belongs to this practicality
New technique and rights protection category.
Claims (8)
1. a kind of biomass boiler air preheater it is characterised in that：Including low-pressure air preheater, low pressure gas cooler,
Low pressure recycle water pump, pressure-air preheater, high pressure gas cooler, connection piping；The air input of low-pressure air preheater
End is connected with low pressure blower, and air outfan is connected with biomass boiler low pressure wind system, the air of pressure-air preheater
Input is connected with high pressure blower, and air outfan is connected with biomass boiler high pressure wind system；High pressure gas cooler, low
Pressure gas cooler is set in sequence in biomass boiler back-end ductwork according to flow of flue gas direction；Low-pressure air preheater, low
Pressure gas cooler sets up heat transfer cycle by low pressure recycle water pump, and pressure-air preheater, high pressure gas cooler pass through
The pressure head that the bypass of biomass boiler feed piping provides sets up heat transfer cycle.
2. according to claim 1 biomass boiler air preheater it is characterised in that：Described low pressure gas cooler, height
If pressure gas cooler includes import header, the tube bank of outlet header Heavenly Stems and Earthly Branches heat-transfer area, described heat-transfer area tube bank is equipped with described import
Header, outlet header constitute coil group.
3. according to claim 1 biomass boiler air preheater it is characterised in that：Described low-pressure air preheater, height
Pressure air preheater is made up of housing, heat-exchange tube group, if described heat-exchange tube group includes import header, the outlet header Heavenly Stems and Earthly Branches
Heat-transfer area is restrained, and described heat-transfer area tube bank is equipped with described import header, outlet header constitutes snakelike heat-exchange tube group.
4. according to claim 2 biomass boiler air preheater it is characterised in that：Described low pressure gas cooler, height
Pressure gas cooler heat-transfer area is restrained as light pipe, extended surface tube or membrane tube；Described heat-transfer area is restrained in-line or is staggered in arrangement.
5. according to claim 3 biomass boiler air preheater it is characterised in that：Described low-pressure air preheater, height
Pressure air preheater heat transfer facial canal bundle is extended surface tube；Described heat-transfer area is restrained in-line or is staggered in arrangement.
6. according to claim 4 biomass boiler air preheater it is characterised in that：Described low pressure gas cooler heat transfer
Face Bundle material is ND steel.
7. according to claim 3 biomass boiler air preheater it is characterised in that：Described low-pressure air preheater, height
Pressure air preheater heat-exchange tube group entrance point is provided with regulating valve.
8. according to claim 1 or 3 biomass boiler air preheater it is characterised in that：Described low-pressure air preheater,
Pressure-air preheater air input is provided with regulating valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620818174.3U CN205939216U (en) | 2016-07-29 | 2016-07-29 | Biomass boiler air heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620818174.3U CN205939216U (en) | 2016-07-29 | 2016-07-29 | Biomass boiler air heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205939216U true CN205939216U (en) | 2017-02-08 |
Family
ID=57923828
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620818174.3U Active CN205939216U (en) | 2016-07-29 | 2016-07-29 | Biomass boiler air heater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205939216U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113639260A (en) * | 2021-08-10 | 2021-11-12 | 中国电建集团河北省电力勘测设计研究院有限公司 | Biomass boiler flue gas waste heat recovery system |
-
2016
- 2016-07-29 CN CN201620818174.3U patent/CN205939216U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113639260A (en) * | 2021-08-10 | 2021-11-12 | 中国电建集团河北省电力勘测设计研究院有限公司 | Biomass boiler flue gas waste heat recovery system |
| CN113639260B (en) * | 2021-08-10 | 2023-08-15 | 中国电建集团河北省电力勘测设计研究院有限公司 | Biomass boiler flue gas waste heat recovery system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106090880A (en) | A kind of machine stove set heat circulation afterheat recycling system | |
| CN204739568U (en) | Energy saving and emission reduction system that horizontal phase transition heat exchanger and prefix type hydrophily formula GGH unite | |
| CN104676622A (en) | Flue gas treatment system and flue gas reheating method based on fluoroplastic heat exchanger | |
| CN201715544U (en) | Flue gas waste heat recovery system | |
| Devandiran et al. | Influence of feed water heaters on the performance of coal fired power plants | |
| CN205939216U (en) | Biomass boiler air heater | |
| CN201827879U (en) | Horizontal natural-circulation heat exchanger | |
| CN207584804U (en) | A kind of flue gas waste heat recovery system based on closed cycle heat recovery | |
| CN105484816B (en) | Combustion and steam association system and its progress control method | |
| CN206247373U (en) | A kind of pipe heat exchanger residual neat recovering system | |
| CN104359223B (en) | System and method using exhaust steam in steam turbine as steam air heater of utility boiler thermal medium | |
| CN102012039B (en) | Forced circulation air preheat system | |
| KR101770524B1 (en) | Heat Recovery System for Boiler | |
| CN205191617U (en) | Flue gas is thermal system again based on phase transition heat transfer and fluoroplastics technique | |
| CN104061561A (en) | System for recovering waste heat of flue gas of coke oven | |
| RU2555919C1 (en) | Surface-mounted heat recovery unit for deep heat recovery of flue gases, and its operation method | |
| CN107606633A (en) | A kind of flue gas waste heat recovery method based on closed cycle heat recovery | |
| CN202002140U (en) | Forced circulation air preheating system | |
| CN207584855U (en) | A kind of flue gas waste heat recovery apparatus for being used to heat different pressures hot net water | |
| CN105299680A (en) | Flue gas reheating system based on phase-change heat transfer and fluoroplastic technologies | |
| CN208186316U (en) | A kind of injection boiler preheating section | |
| CN205897183U (en) | A do wet mixing exhaust gas heat exchanging system for power boiler | |
| CN102116483A (en) | Forced circulation air preheating system | |
| CN205279831U (en) | Oval fin tubular heat exchanger and oval fin tubular intelligence phase transition heat transfer device | |
| FI101163B (en) | Coupling construction between a steam boiler and a steam turbine and the methods for preheating the feed water to the steam turbine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |