CN209279399U - A kind of flue gas waste heat recovery system - Google Patents
A kind of flue gas waste heat recovery system Download PDFInfo
- Publication number
- CN209279399U CN209279399U CN201821941397.4U CN201821941397U CN209279399U CN 209279399 U CN209279399 U CN 209279399U CN 201821941397 U CN201821941397 U CN 201821941397U CN 209279399 U CN209279399 U CN 209279399U
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- China
- Prior art keywords
- heat
- valve
- pipe
- flue gas
- heat recovery
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/30—Technologies for a more efficient combustion or heat usage
Abstract
The utility model discloses a kind of flue gas waste heat recovery system, including smoke pipe, level-one flue gas waste heat recovery apparatus and second level waste-heat recovery device are successively arranged on smoke pipe, level-one flue gas waste heat recovery apparatus utilizes piping connection water supply pipe by level-one fume afterheat；Second level waste-heat recovery device is connect by secondary smoke UTILIZATION OF VESIDUAL HEAT IN pipeline with water supply pipe, and water supply pipe connects water return pipeline by heat exchanger.It is low that the utility model solves heat recovery efficiency existing for existing recuperation of heat mode, the high problem of cost of investment.
Description
Technical field
The utility model belongs to heat recovery technology field, is related to a kind of flue gas waste heat recovery system.
Background technique
As coal changes the universal of gas work, gas fired-boiler mainly becomes the main heating source form of district heating.In recent years,
Amount of consumed gas cumulative year after year is used for gas heating, accounts for the half of combustion gas total burn-off, and boiler heat supplying efficiency is lower.Therefore, it fires
The energy conservation of gas heating system mentions emphasis of the effect as work.
Gas fired-boiler heat loss due to exhaust gas is the main factor for influencing boiler efficiency, compared with fire coal, though burning natural gas
The content of the sulfur dioxide and nitrogen oxides that so discharge is seldom, alleviates the pressure to environment, but a large amount of water generated after burning
Steam is discharged into environment with high-temperature flue gas, causes the serious waste of energy.In addition, include a large amount of vapor in smoke evacuation,
It condenses after discharge and is discharged into atmosphere in the form of " white cigarette " to the cold, become one of inducement of haze.Therefore, although gas fired-boiler
Discharge relative clean, but there are still thermal loss and pollution the problem of, need further to solve.And conventional flue gas waste heat recovery
System is difficult adequately to be recycled the heat of flue gas, and higher using heat pump progress recuperation of heat initial cost.
Utility model content
The purpose of the utility model is to provide a kind of flue gas waste heat recovery systems, solve existing for existing recuperation of heat mode
Heat recovery efficiency is low, the high problem of cost of investment.
The utility model is the technical scheme adopted is that a kind of flue gas waste heat recovery system, including smoke pipe, on smoke pipe successively
Equipped with level-one flue gas waste heat recovery apparatus and second level waste-heat recovery device, level-one flue gas waste heat recovery apparatus passes through more than level-one flue gas
Heat utilization piping connection water supply pipe；Second level waste-heat recovery device is connected by secondary smoke UTILIZATION OF VESIDUAL HEAT IN pipeline and water supply pipe
It connects, water supply pipe connects water return pipeline by heat exchanger.
The utility model is also characterized by
Level-one fume afterheat is arranged using water pump a and valve c, valve c is successively arranged on pipeline close to water supply pipe.
Secondary smoke UTILIZATION OF VESIDUAL HEAT IN pipeline is equipped with heat pipe heat accumulation layer, and the opposite sides of heat pipe heat accumulation layer is respectively equipped with evaporation
Catch basin and condensation catch basin；
It is also connected with water tank on secondary smoke UTILIZATION OF VESIDUAL HEAT IN pipeline, is equipped between water tank and secondary smoke UTILIZATION OF VESIDUAL HEAT IN pipeline
Valve e, water tank is close to evaporation catch basin setting；
Water pump b and valve d is also successively arranged on secondary smoke UTILIZATION OF VESIDUAL HEAT IN pipeline, water pump b is arranged close to condensation catch basin,
Valve d is arranged close to water supply pipe.
Water supply pipe includes primary net water supplying pipe, and primary net water supplying pipe connects secondary network water supplying pipe by heat exchanger, secondary
It is connected with temperature measuring set a, valve a, temperature measuring set b and valve b on net water supplying pipe in turn；Valve a is located at secondary network water supply
Pipe and level-one fume afterheat are using between pipeline；
Valve b is located between secondary network water supplying pipe and secondary smoke UTILIZATION OF VESIDUAL HEAT IN pipeline.
Water return pipeline includes secondary network return pipe, and one end of secondary network return pipe connects primary net return water by heat exchanger
Pipe.
Temperature measuring set a and temperature measuring set b is self-induction temperature measuring set.
Valve a, valve b, valve c and valve d are step direct-acting type electromagnetic valve.
Heat pipe heat accumulation layer carries out accumulation of heat using foam copper insulating layer.
Heat exchanger is spiral heat exchanger.
The utility model has the beneficial effects that the utility model solves heat recovery efficiency existing in the prior art
Problem low, initial cost is high, and the latent heat in flue gas has sufficiently been recycled, energy consumption has not only been saved, waste heat recycling is substantially increased
Efficiency further reduced flue-gas temperature and reduce moisture discharge amount.It is recycled for gas fired-boiler fume afterheat depth
Development provides new thinking.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of flue gas waste heat recovery system of the utility model.
In figure, 1. secondary network return pipes, 2. secondary network water supplying pipes, 3. heat exchangers, 4. temperature measuring set a, the measurement of 5. temperature
Instrument b, 6 valve a, 7. valve b, 8. valve c, 9. valve d, 10. water pump a, 11. water pump b, 12. evaporation catch basins, 13. condense storage
Sink, 14. heat pipe heat accumulation layers, 15. smoke pipes, 16. level-one flue gas waste heat recovery apparatus, 17. secondary smoke waste-heat recovery devices,
18. valve e, 19. water tanks, 20. primary net return pipes, 21. primary net water supplying pipes, 22. level-one fume afterheats utilize pipeline, 23.
Secondary smoke UTILIZATION OF VESIDUAL HEAT IN pipeline.
Specific embodiment
The utility model is described in detail with reference to the accompanying drawings and detailed description.
A kind of flue gas waste heat recovery system of the utility model is successively arranged on smoke pipe 15 as shown in Figure 1, including smoke pipe 15
Level-one flue gas waste heat recovery apparatus 16 and second level waste-heat recovery device 17, level-one flue gas waste heat recovery apparatus 16 pass through level-one flue gas
UTILIZATION OF VESIDUAL HEAT IN pipeline 22 connects water supply pipe；Second level waste-heat recovery device 17 is by secondary smoke UTILIZATION OF VESIDUAL HEAT IN pipeline 23 and supplies water
Piping connection, water supply pipe connect water return pipeline by heat exchanger 3.
Level-one fume afterheat is set using water pump a10 and valve c8, valve c8 is successively arranged on pipeline 22 close to water supply pipe
It sets.
Secondary smoke UTILIZATION OF VESIDUAL HEAT IN pipeline 23 is equipped with heat pipe heat accumulation layer 14, and the opposite sides of heat pipe heat accumulation layer 14 is set respectively
There are evaporation catch basin 12 and condensation catch basin 13；
Water tank 19, water tank 19 and secondary smoke UTILIZATION OF VESIDUAL HEAT IN pipeline 23 are also connected on secondary smoke UTILIZATION OF VESIDUAL HEAT IN pipeline 23
Between be equipped with valve e18, water tank 19 close to evaporation catch basin 12 be arranged；
Water pump b11 and valve d9 is also successively arranged on secondary smoke UTILIZATION OF VESIDUAL HEAT IN pipeline 23, water pump b11 is close to condensation water storage
Slot 13 is arranged, and valve d9 is arranged close to water supply pipe.
Water supply pipe includes primary net water supplying pipe 21, and primary net water supplying pipe 21 connects secondary network water supplying pipe by heat exchanger 3
2, temperature measuring set a4, valve a6, temperature measuring set b5 and valve b7 are connected in turn on secondary network water supplying pipe 2；A6, valve
In secondary network water supplying pipe 2 and level-one fume afterheat using between pipeline 22；
Valve b7 is located between secondary network water supplying pipe 2 and secondary smoke UTILIZATION OF VESIDUAL HEAT IN pipeline 23.
Water return pipeline includes secondary network return pipe 1, and one end of secondary network return pipe 1 is connected by heat exchanger 3 once nets back
Water pipe 20.
Temperature measuring set a4 and temperature measuring set b5 is self-induction temperature measuring set.
Valve a6, valve b7, valve c8 and valve d9 are step direct-acting type electromagnetic valve.
Heat pipe heat accumulation layer 14 carries out accumulation of heat using foam copper insulating layer.
Heat exchanger 3 is spiral heat exchanger.
A kind of course of work of flue gas waste heat recovery system of the utility model is, when secondary network return pipe 1 is changed by board-like
When hot device 3, heat is carried out with primary net water supplying pipe 21 and is exchanged, the temperature of hot water increases, and hot water first flows through temperature measuring set a4,
If hot water temperature is more than 50 DEG C at this time, hot water is directly fed user by Open valve a6, b7；If water temperature is lower than 50 DEG C, open
Valve c8 and valve b7 are opened, at this time under the action of water pump a10, hot water is contacted with level-one flue gas waste heat recovery apparatus 16,
The waste heat for absorbing flue gas, rises hot water temperature, and hot water imports in secondary network return pipe 1 at this time, when hot water is measured by temperature
When instrument b5, measuring instrument carries out self-induction, supplies user if temperature reaches 50 DEG C；Otherwise Open valve d9 and valve e18, this
When, hot water completes two circulations in second circuit.In tap water feed line first in water tank 19, more than secondary smoke
Heat recovery apparatus 17 carries out heat exchange, and the tap water after heating is contacted with the evaporation catch basin 12 of heat pipe, at this time heat pipe evaporation ends
It is heated, the liquid working substance in heat pipe absorbs heat of vaporization and take heat in heat pipe condensation catch basin 13 to, condenses and stores in heat pipe
In sink 13, heat steam condensation discharges heat, and the hot water in secondary water-supply net 2 enters heat pipe cold under the action of water pump b10
Solidifying catch basin 13 absorbs the heat of condensation end of heat pipe, and water temperature rises, and supplies heat user heat hot water.The liquid working substance in heat pipe
During transmitting heat, thermal loss in order to prevent wraps up one layer of heat preservation material foams copper in heat pipe outer wall, and heat can be by
More fully utilize.Meanwhile the liquid refrigerant of condensation flows back into heat pipes heat section, such circulating transfer heat.
The characteristics of each component, is as follows in a kind of flue gas waste heat recovery system of the utility model:
Temperature measuring set a4 and temperature measuring set b5 is self-induction temperature measuring set, and being exactly can hot water in automatic measurement induction tube
Temperature value and judge in pipe between the temperature and set temperature of hot water with the presence or absence of the temperature difference；
Heat exchanger 3 is spiral heat exchanger, and spiral heat exchanger is a kind of new type heat exchanger, and heat transfer efficiency is good, fortune
Row stability is high, can more co-operation.Spiral heat exchanger is a kind of high-performance heat exchanger equipment, it is considered that spiral plate type
The heat transfer efficiency of heat exchanger is 1-3 times of tubular heat exchanger.Flow dead zone, spacing column and spiral is not present in cross-section single channel
Channel reduces the critical Reynolds number of fluid to the disturbance of flowing, and the heat transfer coefficient of spiral heat exchanger is maximum when water water exchanges heat
It is not allow susceptible to plugging, especially mud compared with general tubular heat exchanger up to 3000W/ (㎡ .K) spiral heat exchanger
The suspended particulates impurity such as husky, small shell are not easy to deposit in helical duct.
Valve a6, valve b7, valve c8 and valve d9 are step direct-acting type electromagnetic valve, and step direct-acting type electromagnetic valve is applied
Automation control pipeline realizes zero voltage starting, opens without depended on pressure, greatly improves use scope, and step direct-acting type electromagnetic valve is made
For the executive component of industrial process automation control system, valve can be automatically turned on or closed after energization, realized to flowing in pipeline
The on-off of body medium controls, and the medium of circulation has the fluids such as water, air, combustion gas, oil, preservative.
For the heat preservation layer material that heat pipe heat accumulation layer 14 uses for foam copper, foam copper is that one kind is uniform-distribution in Copper substrate
The novel and multifunctional material in a large amount of connections or non-intercommunicating pore hole, the electric conductivity and ductility of foam copper are good, and preparation cost is low, bubble
Foam copper has excellent thermal conductivity, can enhanced heat exchange.
Level-one fume afterheat is solar heat pipe using pipeline 22 and secondary smoke UTILIZATION OF VESIDUAL HEAT IN pipeline 23, and technology overcomes
Direct insertion, U-tube formula thermal-arrest (hot water) device shortcomings have the advantages such as heat transfer is fast, resistance is small, let cool jelly, pipe explosion.Structure
Simply, handling ease, low in cost, reliable operation.
Claims (9)
1. a kind of flue gas waste heat recovery system, it is characterised in that: including smoke pipe (15), smoke pipe is successively arranged level-one flue gas on (15)
Waste-heat recovery device (16) and second level waste-heat recovery device (17), level-one flue gas waste heat recovery apparatus (16) pass through more than level-one flue gas
Heat utilization pipeline (22) connects water supply pipe；Second level waste-heat recovery device (17) by secondary smoke UTILIZATION OF VESIDUAL HEAT IN pipeline (23) with
The water supply pipe connection, the water supply pipe connect water return pipeline by heat exchanger (3).
2. a kind of flue gas waste heat recovery system according to claim 1, it is characterised in that: the level-one fume afterheat utilizes
Water pump a (10) and valve c (8) are successively arranged on pipeline (22), valve c (8) is arranged close to the water supply pipe.
3. a kind of flue gas waste heat recovery system according to claim 2, it is characterised in that: the secondary smoke UTILIZATION OF VESIDUAL HEAT IN
Pipeline (23) be equipped with heat pipe heat accumulation layer (14), the opposite sides of heat pipe heat accumulation layer (14) be respectively equipped with evaporation catch basin (12) and
It condenses catch basin (13)；
It is also connected on secondary smoke UTILIZATION OF VESIDUAL HEAT IN pipeline (23) water tank (19), water tank (19) and secondary smoke UTILIZATION OF VESIDUAL HEAT IN pipeline
(23) valve e (18) are equipped between, water tank (19) is close to evaporation catch basin (12) setting；
Water pump b (11) and valve d (9) is also successively arranged on secondary smoke UTILIZATION OF VESIDUAL HEAT IN pipeline (23), water pump b (11) is close to condensation
Catch basin (13) setting, valve d (9) are arranged close to water supply pipe.
4. a kind of flue gas waste heat recovery system according to claim 3, it is characterised in that: the water supply pipe includes primary
Net water supplying pipe (21), primary net water supplying pipe (21) pass through heat exchanger (3) connection secondary network water supplying pipe (2), secondary network water supplying pipe (2)
On be connected with temperature measuring set a (4), valve a (6), temperature measuring set b (5) and valve b (7) in turn；Valve a (6) is located at secondary
Net water supplying pipe (2) and level-one fume afterheat are using between pipeline (22)；
Valve b (7) is located between secondary network water supplying pipe (2) and secondary smoke UTILIZATION OF VESIDUAL HEAT IN pipeline (23).
5. a kind of flue gas waste heat recovery system according to claim 4, it is characterised in that: the water return pipeline includes secondary
One end of net return pipe (1), secondary network return pipe (1) connects primary net return pipe (20) by heat exchanger (3).
6. a kind of flue gas waste heat recovery system according to claim 4, it is characterised in that: the temperature measuring set a (4) and
Temperature measuring set b (5) is self-induction temperature measuring set.
7. a kind of flue gas waste heat recovery system according to claim 4, it is characterised in that: the valve a (6), valve b
(7), valve c (8) and valve d (9) is step direct-acting type electromagnetic valve.
8. a kind of flue gas waste heat recovery system according to claim 4, it is characterised in that: the heat pipe heat accumulation layer (14) is adopted
Accumulation of heat is carried out with foam copper insulating layer.
9. a kind of flue gas waste heat recovery system according to claim 1, it is characterised in that: the heat exchanger (3) is spiral
Plate heat exchanger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821941397.4U CN209279399U (en) | 2018-11-23 | 2018-11-23 | A kind of flue gas waste heat recovery system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821941397.4U CN209279399U (en) | 2018-11-23 | 2018-11-23 | A kind of flue gas waste heat recovery system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209279399U true CN209279399U (en) | 2019-08-20 |
Family
ID=67602441
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821941397.4U Expired - Fee Related CN209279399U (en) | 2018-11-23 | 2018-11-23 | A kind of flue gas waste heat recovery system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209279399U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112944451A (en) * | 2021-04-15 | 2021-06-11 | 晟源高科(北京)科技有限公司 | Natural gas energy supplementing graded utilization system based on pressure isolation station and adjusting method |
| CN115095904A (en) * | 2022-06-09 | 2022-09-23 | 重庆清研理工智能控制技术研究院有限公司 | Regional sanitary hot water supply system and method utilizing waste heat resources |
-
2018
- 2018-11-23 CN CN201821941397.4U patent/CN209279399U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112944451A (en) * | 2021-04-15 | 2021-06-11 | 晟源高科(北京)科技有限公司 | Natural gas energy supplementing graded utilization system based on pressure isolation station and adjusting method |
| CN115095904A (en) * | 2022-06-09 | 2022-09-23 | 重庆清研理工智能控制技术研究院有限公司 | Regional sanitary hot water supply system and method utilizing waste heat resources |
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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: 20190820 Termination date: 20191123 |
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| CF01 | Termination of patent right due to non-payment of annual fee |