CN205447787U - Flue gas waste heat recovery system - Google Patents
Flue gas waste heat recovery system Download PDFInfo
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- CN205447787U CN205447787U CN201521136634.6U CN201521136634U CN205447787U CN 205447787 U CN205447787 U CN 205447787U CN 201521136634 U CN201521136634 U CN 201521136634U CN 205447787 U CN205447787 U CN 205447787U
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- waste heat
- recovery system
- gas
- flue gas
- air
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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
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Abstract
The utility model discloses a flue gas waste heat recovery system, gas thermal equipment's smoke exhaust passage communicates to heat pipe air heater's air inlet, and heat pipe air heater's gas vent communicates condensing feed water heater's air inlet, and condensing feed water heater's gas vent communicates to the chimney, frequency conversion blower's supply -air outlet communicates heat pipe air heater's air intake, and heat pipe air heater's air outlet communicates combustion apparatus's air supply entry, the water inlet of frequency conversion pulsation formula water -feeding pump communicates the feed -tank, and the outlet of frequency conversion pulsation formula water -feeding pump communicates condensing feed water heater's water inlet, and condensing feed water heater's delivery port communicates heat equipment. Two -stage residual heat from flue gas has greatly improved residual heat from flue gas rates, has avoided a large amount of sensible heats and latent heat loss, has solved the low technical problem of current gas thermal equipment heat recovery mode fractional energy saving, has improved resource utilization rate.
Description
Technical field
This utility model relates to combustion gas heat power equipment energy recovery technical field, is specifically related to a kind of flue gas waste heat recovery system.
Background technology
Fossil fuel faces day by day exhausted in global industry process as non-renewable type resource, and energy-saving and emission-reduction have become global theme.The whole nation is at fortune nearly 200,000 sets of combustion gas class heat power equipment, year burn gas fuel about 400--700 billion cubic meter.While consuming flood tide resource day by day, combustion product CO2Discharging about 7700--13500 ten thousand tons/year, NOx discharge is the hugest.
Gaseous fuel is mainly composed of CmHn, and CH ratio is comparatively small, and H element is occupied an leading position in share.Gaseous fuel is in boiler flow field, and H element produces hydration reaction with O element in combustion air, forms superheated steam at high operating temperatures, carries a large amount of latent heat of vaporization (the unavailable heat that i.e. in fuel high position calorific capacity, conventional art is assert)；Air-fuel has moisture by oneself and chemistry aquifer yield constitutes flue gas total Water, proves after measured, and often burn under optimum alpha coefficient 1Nm3Natural gas can produce 1.63Kg water vapour.
Combustion engine waste heat boiler exhaust gas temperature is 130～180 DEG C；Gas Direct-fired Machine, gas fired-boiler, the exhaust gas temperature of gas heat conducting oil stove are 190～280 DEG C；Gas burning kiln exhaust gas temperature is more up to 700～900 DEG C.Under these temperature conditionss, flue gas total moisture is present in smoke evacuation with superheated steam state and spills into air, causes great sensible heat, latent heat losses and environmental thermal pollution, and forms the CO of excess2And NOx emission.
At present, by installing water additional～gas heat exchanger makes exhaust gas temperature be down to about 170 DEG C to realize hot water reuse at boiler smoke outlet, but fractional energy savings is not more than 3%.Existing condenser boiler adapted oxygen-eliminating device supplies water to economizer, but owing to oxygen-eliminating device leaving water temperature reaches 104 DEG C, can cause water supply system water hammer because of the vaporization of economizer water side, and then cause shutdown of boiler.Visible, the fractional energy savings of existing combustion gas heat power equipment energy recovery technology is low and there is system defect.
Utility model content
This utility model embodiment, by providing a kind of flue gas waste heat recovery system, solves the low technical problem with system defect of fractional energy savings of existing combustion gas heat power equipment energy recovery technology.
This utility model embodiment provides a kind of flue gas waste heat recovery system, including: combustion gas heat power equipment, heat pipe air heater, condensing feed-water heater, frequency conversion pressure fan, combustion apparatus, frequency conversion pulsating feed pump, feed-tank；
The discharge flue of described combustion gas heat power equipment is communicated to the air inlet of described heat pipe air heater, and the air vent of described heat pipe air heater is communicated to the air inlet of described condensing feed-water heater, and the air vent of described condensing feed-water heater is communicated to chimney；
The air outlet of described frequency conversion pressure fan is communicated to the air inlet of described heat pipe air heater, and the air outlet of described heat pipe air heater is communicated to the air-supply entrance of described combustion apparatus；
The water inlet of described frequency conversion pulsating feed pump is communicated to described feed-tank, and the discharge outlet of described frequency conversion pulsating feed pump is communicated to the water inlet of described condensing feed-water heater, and the outlet of described condensing feed-water heater is communicated to heating equipment.
Preferably, the one in described combustion gas heat power equipment, specially gas fired-boiler, Gas Direct-fired Machine, gas heat conducting oil stove, gas burning kiln, combustion engine waste heat boiler.
Preferably, when described combustion gas heat power equipment is described gas fired-boiler or described combustion engine waste heat boiler, described heating equipment is specially thermal deaerator or high temperature water-supply case, wherein, the outlet of described thermal deaerator or the outlet of described high temperature water-supply case are communicated to described gas fired-boiler or described combustion engine waste heat boiler via boiler feed pump.
Preferably, when described combustion gas heat power equipment is a kind of in described Gas Direct-fired Machine, described gas heat conducting oil stove, described gas burning kiln, described heating equipment is particularly as follows: Process heat equipment, or bathroom heating equipment, or two grades of energy-conservation heat supply networks.
Preferably, described flue gas waste heat recovery system also includes: the first air-fuel electrical proportional actuator, is arranged at the described air-supply entrance of described combustion apparatus.
Preferably, described flue gas waste heat recovery system also includes: the second air-fuel electrical proportional actuator, is arranged at the fuel gas inlet of described combustion apparatus.
Preferably, described flue gas waste heat recovery system also includes Programmable Logic Controller, and the end that controls of described Programmable Logic Controller is at least connected with the control signal input to described frequency conversion pulsating feed pump and described combustion apparatus control signal input.
Preferably, described flue gas waste heat recovery system also includes flue change-over gate and the emergent flue of maintenance, and described flue change-over gate is arranged on the described discharge flue of described combustion gas heat power equipment, and described flue change-over gate is communicated to described maintenance and meets an urgent need flue.
Preferably, described flue gas waste heat recovery system also includes steam trap connection；
The condensation-water drain of described heat pipe air heater and the condensation-water drain of described condensing feed-water heater are all communicated with described steam trap connection.
Preferably, the outlet of described steam trap connection is communicated to neutralization pond.
The one or more technical schemes provided in this utility model embodiment, at least have the following technical effect that or advantage:
Owing to this utility model embodiment flue gas waste heat recovery system have employed the smoke evacuation of combustion gas heat power equipment after the cooling of heat pipe air heater realizes primary Exposure degree, going successively to the cooling of condensing feed-water heater and realize condensation latent heat, Exposure degree, flue gas afterwards enters air through chimney.The primary Exposure degree temperature of heat pipe air heater is higher, and being used for heating cold wind, to be supplied to combustion apparatus combustion-supporting；The latent heat of condensing feed-water heater, Exposure degree are used for adding hot water for heating equipment.Therefore two-stage flue gas waste heat recovery greatly improves flue gas waste heat recovery rate, it is to avoid a large amount of sensible heats and latent heat losses, solves the technical problem that existing combustion gas heat power equipment energy recovery mode fractional energy savings is low, improves resource utilization.Environmental thermal pollution is effectively reduced while reducing discharge.
Simultaneously, owing to entering oxygen-eliminating device after using condensed formula feed-water heater heating of feeding water, by oxygen-eliminating device to the pattern of boiler water supply, decrease oxygen-eliminating device consumable quantity of steam, save heat energy, avoid the vaporization problem of feed-water heater, it is possible to avoid water supply system water hammer simultaneously, thus efficiently solve the system defect of the shutdown of boiler that water supply system water hammer causes, improve production reliability.
Accompanying drawing explanation
In order to be illustrated more clearly that this utility model embodiment or technical scheme of the prior art, the accompanying drawing used required in embodiment or description of the prior art will be briefly described below, apparently, accompanying drawing in describing below is only embodiment of the present utility model, for those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to obtain other accompanying drawing according to the accompanying drawing provided.
Fig. 1 is the flue gas waste heat recovery system structural representation of corresponding gas fired-boiler in this utility model embodiment；
Fig. 2 is the flue gas waste heat recovery system structural representation of corresponding Gas Direct-fired Machine in this utility model embodiment；
Fig. 3 is the flue gas waste heat recovery system structural representation of corresponding gas heat conducting oil stove in this utility model embodiment；
Fig. 4 is the flue gas waste heat recovery system structural representation of corresponding gas burning kiln in this utility model embodiment；
Fig. 5 is the flue gas waste heat recovery system structural representation of corresponding combustion engine waste heat boiler in this utility model embodiment.
Detailed description of the invention
For making the purpose of this utility model embodiment, technical scheme and advantage clearer, below in conjunction with the accompanying drawing in this utility model embodiment, technical scheme in this utility model embodiment is clearly and completely described, obviously, described embodiment is a part of embodiment of this utility model rather than whole embodiments.Based on the embodiment in this utility model, the every other embodiment that those of ordinary skill in the art are obtained under not making creative work premise, broadly fall into the scope of this utility model protection.
With reference to shown in Fig. 1～Fig. 5, this utility model provides a kind of flue gas waste heat recovery system, including: combustion gas heat power equipment, heat pipe air heater 1, condensing feed-water heater 2, frequency conversion pressure fan 3, combustion apparatus 4, frequency conversion pulsating feed pump 5, feed-tank 6.
The discharge flue of combustion gas heat power equipment is communicated to the air inlet of heat pipe air heater 1, and the air vent of heat pipe air heater 1 is communicated to the air inlet of condensing feed-water heater 2, and the air vent of condensing feed-water heater 2 is communicated to chimney 7；The air outlet of frequency conversion pressure fan 3 is communicated to the air inlet of heat pipe air heater 1, and the air outlet of heat pipe air heater 1 is communicated to the air-supply entrance of combustion apparatus 4；The water inlet of frequency conversion pulsating feed pump 5 is communicated to feed-tank 6, and the discharge outlet of frequency conversion pulsating feed pump 5 is communicated to the water inlet of condensing feed-water heater 2, and the outlet of condensing feed-water heater 2 is communicated to heating equipment.
Wherein, the smoke evacuation of combustion gas heat power equipment is cooled to 65～75 DEG C in discharge flue enters heat pipe air heater 1, realizes primary Exposure degree by heat pipe air heater 1；The flue gas entrance condensing feed-water heater 2 discharged from heat pipe air heater 1 is cooled to 45～55 DEG C, thus realizes latent heat, Exposure degree by condensation, and the flue gas that condensing feed-water heater 2 is discharged enters air through chimney 7.Cold wind by frequency conversion pressure fan 3 to heat pipe air heater 1 air feed, through to be supplied to the air-supply entrance of combustion apparatus 4 by thermal insulation air channel combustion-supporting to burning in stove after being heated to 125 DEG C by heat pipe air heater 1.
Feedwater supplied water to condensing feed-water heater 2 from feed-tank 6 by frequency conversion pulsating feed pump 5, according to different technological temperature requirements, condensing feed-water heater 2 feedwater is heated to 55～70 DEG C after for heating equipment.
Concrete, in feed-tank 6, feed temperature is 1～20 DEG C.
Concrete, combustion gas heat power equipment is specially the one in gas fired-boiler 8, Gas Direct-fired Machine 9, gas heat conducting oil stove 10, gas burning kiln 11, combustion engine waste heat boiler 12.
Wherein, for as it is shown in figure 1, the exhaust gas temperature of gas fired-boiler 8 is 210～230 DEG C；For shown in Fig. 2, the exhaust gas temperature of Gas Direct-fired Machine 9 is 190～220 DEG C；For shown in Fig. 3, the exhaust gas temperature of gas heat conducting oil stove 10 is 270～300 DEG C；For shown in Fig. 4, the exhaust gas temperature of gas burning kiln 11 is 700～900 DEG C；For shown in Fig. 5, the exhaust gas temperature of combustion engine waste heat boiler 12 is 130～190 DEG C.
For different combustion gas heat power equipments, the heating equipment used also differs, and is described with reference to Fig. 1～Fig. 5 separately below:
With reference to shown in Fig. 1, when being gas fired-boiler 8 for combustion gas heat power equipment, heating equipment is set to thermal deaerator 13, the outlet of thermal deaerator 13 is communicated to gas fired-boiler 8 via boiler feed pump 14, concrete, the water inlet of boiler feed pump 14 is connected to the outlet of thermal deaerator 13, and the discharge outlet of boiler feed pump 14 is connected in gas fired-boiler 8, and the water outlet of oxygen-eliminating device 13 is supplied in gas fired-boiler 8 via boiler feed pump 14.
With reference to shown in Fig. 1, when being gas fired-boiler 8 for combustion gas heat power equipment, heating equipment may be arranged as high temperature water-supply case 15, the outlet of high temperature water-supply case 15 is communicated to gas fired-boiler 8 via boiler feed pump 14, concrete, the water inlet of boiler feed pump 14 is connected to the outlet of high temperature water-supply case 15, and the discharge outlet of boiler feed pump 14 is connected in gas fired-boiler 8, and the water outlet of high temperature water-supply case 15 is supplied in gas fired-boiler 8 via boiler feed pump 14.In specific implementation process, the water temperature of high temperature water-supply case 15 is 55～70 DEG C.
With reference to shown in Fig. 2, being Gas Direct-fired Machine 9 for combustion gas heat power equipment, heating equipment is specially the outer heating equipment 20 of system, such as Process heat equipment, or bathroom heating equipment, or two grades of energy-conservation heat supply networks.In specific implementation process, used as in Process heat equipment, bathroom heating equipment, two grades of energy-conservation heat supply networks any is determined according to actual process thermal characteristics and load, wherein, in Fig. 2, the outer heating equipment 20 of system is Process heat equipment, or bathroom heating equipment, or the one of which of two grades of energy-conservation heat supply networks.
With reference to shown in Fig. 3, being gas heat conducting oil stove 10 for combustion gas heat power equipment, heating equipment is specially the outer heating equipment 20 of system, such as Process heat equipment, or bathroom heating equipment, or two grades of energy-conservation heat supply networks.In specific implementation process, used as in Process heat equipment, bathroom heating equipment, two grades of energy-conservation heat supply networks any is determined according to actual process thermal characteristics and load, in Fig. 3, the outer heating equipment 20 of system is Process heat equipment, or bathroom heating equipment, or the one of which of two grades of energy-conservation heat supply networks.
With reference to shown in Fig. 4, being gas burning kiln 11 for combustion gas heat power equipment, heating equipment is specially the outer heating equipment 20 of system, such as Process heat equipment, or bathroom heating equipment, or two grades of energy-conservation heat supply networks.In specific implementation process, used as in Process heat equipment, bathroom heating equipment, two grades of energy-conservation heat supply networks any is determined according to actual process thermal characteristics and load, in Fig. 4, the outer heating equipment 20 of system is Process heat equipment, or bathroom heating equipment, or the one of which of two grades of energy-conservation heat supply networks.
With reference to shown in Fig. 5, when being combustion engine waste heat boiler 12 for combustion gas heat power equipment, heating equipment is set to the built-in thermal deaerator 13 that boiler carries, the outlet of thermal deaerator 13 is communicated to combustion engine waste heat boiler 12 via boiler feed pump 14, concrete, the water inlet of boiler feed pump 14 is connected to the outlet of thermal deaerator 13, and the discharge outlet of boiler feed pump 14 is connected in combustion engine waste heat boiler 12, and the water outlet of thermal deaerator 13 is supplied in combustion engine waste heat boiler 12 via boiler feed pump 14.
Further, flue gas waste heat recovery system also includes: the first air-fuel electrical proportional actuator 16, is arranged on the pipeline of air-supply entrance of combustion apparatus 4.Flue gas waste heat recovery system also includes: the second air-fuel electrical proportional actuator 17, on the pipeline of the fuel gas inlet being arranged on combustion apparatus 4.It is adjusted the proportioning of air and combustion gas by the first air-fuel electrical proportional actuator 16 and the second air-fuel electrical proportional actuator 17, thus enters after realizing optimal air-fuel ratio in combustion apparatus 4 and enter stove burning.
In specific implementation process, flue gas waste heat recovery system also includes Programmable Logic Controller 18, the end that controls of Programmable Logic Controller 18 is connected by controlling the control signal input of cable and the first air-fuel electrical proportional actuator 16 and the second air-fuel electrical proportional actuator 17, thus control the first air-fuel electrical proportional actuator 16 and the second air-fuel electrical proportional actuator 17 coordinates, blown by Programmable Logic Controller 18 programme-control High Temperature High Pressure, form good stove combusting air aerodynamic field and temperature field, make efficiency of combustion bring up to 100%.
In specific implementation process, the control end of Programmable Logic Controller 18 can also be connected to the control signal input of frequency conversion pulsating feed pump 5 by controlling cable, thus controls the hertz number of frequency conversion pulsating feed pump 5 to change velocity in pipes by Programmable Logic Controller 18.
In specific implementation process, the end that controls of Programmable Logic Controller 18 may also connect to the control signal input of frequency conversion pressure fan 3, thus controlled the hertz number of frequency conversion pressure fan 3 by Programmable Logic Controller 18.
Concrete, the end that controls of Programmable Logic Controller 18 may also connect to the control signal input of combustion apparatus 4.
Further, the flue gas waste heat recovery system that this utility model embodiment provides also includes flue change-over gate 19 and the emergent flue of maintenance, and flue change-over gate 19 is arranged on the discharge flue of combustion gas heat power equipment, and flue change-over gate 19 is communicated to overhaul emergent flue.
In specific implementation process, the end that controls of Programmable Logic Controller 18 may also connect to the control signal input of flue change-over gate 19, thus controlled the break-make of change-over gate by Programmable Logic Controller 18.
Further, the flue gas waste heat recovery system that this utility model embodiment provides is additionally provided with steam trap connection (not shown).Concrete, the condensation-water drain of heat pipe air heater 1 and the condensation-water drain of condensing feed-water heater 2 are all communicated with steam trap connection, the smooth and easy discharge of condensed water being beneficial in the condensed water in heat pipe air heater 1 and condensing feed-water heater 2.
Further, for pH value exceed standard hydrophobic, the outlet of steam trap connection is communicated in neutralization pond (not shown), neutralization pond (not shown) process after qualified discharge or Treated sewage reusing.
The inwall of chimney 7 uses anticorrosive coat, it is to avoid due to the relatively big corrosion to chimney 7 inwall of steam in smoke evacuation.
By the one or more technical schemes provided in above-mentioned this utility model embodiment, at least have the following technical effect that or advantage:
Owing to this utility model embodiment flue gas waste heat recovery system have employed the smoke evacuation of combustion gas heat power equipment after the cooling of heat pipe air heater realizes primary Exposure degree, going successively to the cooling of condensing feed-water heater and realize condensation latent heat, Exposure degree, flue gas afterwards enters air through chimney.The primary Exposure degree temperature of heat pipe air heater is higher, and being used for heating cold wind, to be supplied to combustion apparatus combustion-supporting；The latent heat of condensing feed-water heater, Exposure degree are used for adding hot water for heating equipment.Therefore two-stage flue gas waste heat recovery greatly improves flue gas waste heat recovery rate, avoid a large amount of sensible heat and latent heat losses, solve the technical problem that existing combustion gas heat power equipment energy recovery mode fractional energy savings is low, improve resource utilization, reduce discharge and decrease environmental thermal pollution.
Simultaneously, owing to entering oxygen-eliminating device after using condensed formula feed-water heater heating of feeding water, by oxygen-eliminating device to the pattern of boiler water supply, avoid the vaporization problem of feed-water heater, it can be avoided that water supply system water hammer, thus efficiently solve the system defect of the shutdown of boiler that water supply system water hammer causes, improve production reliability.
Although having been described for preferred embodiment of the present utility model, but those skilled in the art once know basic creative concept, then these embodiments can be made other change and amendment.So, claims are intended to be construed to include preferred embodiment and fall into all changes and the amendment of this utility model scope.
Obviously, those skilled in the art can carry out various change and modification without deviating from spirit and scope of the present utility model to this utility model.So, if these amendments of the present utility model and modification belong within the scope of this utility model claim and equivalent technologies thereof, then this utility model is also intended to comprise these change and modification.
Claims (10)
1. a flue gas waste heat recovery system, it is characterised in that including: combustion gas heat power equipment, heat pipe air heater, condensing feed-water heater, frequency conversion pressure fan, combustion apparatus, frequency conversion pulsating feed pump, feed-tank；
The discharge flue of described combustion gas heat power equipment is communicated to the air inlet of described heat pipe air heater, and the air vent of described heat pipe air heater is communicated to the air inlet of described condensing feed-water heater, and the air vent of described condensing feed-water heater is communicated to chimney；
The air outlet of described frequency conversion pressure fan is communicated to the air inlet of described heat pipe air heater, and the air outlet of described heat pipe air heater is communicated to the air-supply entrance of described combustion apparatus；
The water inlet of described frequency conversion pulsating feed pump is communicated to described feed-tank, and the discharge outlet of described frequency conversion pulsating feed pump is communicated to the water inlet of described condensing feed-water heater, and the outlet of described condensing feed-water heater is communicated to heating equipment.
2. flue gas waste heat recovery system as claimed in claim 1, it is characterised in that the one in described combustion gas heat power equipment, specially gas fired-boiler, Gas Direct-fired Machine, gas heat conducting oil stove, gas burning kiln, combustion engine waste heat boiler.
3. flue gas waste heat recovery system as claimed in claim 2, it is characterized in that, when described combustion gas heat power equipment is described gas fired-boiler or described combustion engine waste heat boiler, described heating equipment is specially thermal deaerator or high temperature water-supply case, wherein, the outlet of described thermal deaerator or the outlet of described high temperature water-supply case are communicated to described gas fired-boiler or described combustion engine waste heat boiler via boiler feed pump.
4. flue gas waste heat recovery system as claimed in claim 2, it is characterized in that, when described combustion gas heat power equipment is a kind of in described Gas Direct-fired Machine, described gas heat conducting oil stove, described gas burning kiln, described heating equipment is particularly as follows: Process heat equipment, or bathroom heating equipment, or two grades of energy-conservation heat supply networks.
5. flue gas waste heat recovery system as claimed in claim 1, it is characterised in that described flue gas waste heat recovery system also includes: the first air-fuel electrical proportional actuator, is arranged at the described air-supply entrance of described combustion apparatus.
6. flue gas waste heat recovery system as claimed in claim 5, it is characterised in that described flue gas waste heat recovery system also includes: the second air-fuel electrical proportional actuator, is arranged at the fuel gas inlet of described combustion apparatus.
7. the flue gas waste heat recovery system as described in claim arbitrary in claim 1-6, it is characterized in that, described flue gas waste heat recovery system also includes Programmable Logic Controller, and the end that controls of described Programmable Logic Controller is at least connected with the control signal input to described frequency conversion pulsating feed pump and the control signal input of described combustion apparatus.
8. flue gas waste heat recovery system as claimed in claim 1, it is characterized in that, described flue gas waste heat recovery system also includes flue change-over gate and the emergent flue of maintenance, described flue change-over gate is arranged on the described discharge flue of described combustion gas heat power equipment, and described flue change-over gate is communicated to described maintenance and meets an urgent need flue.
9. flue gas waste heat recovery system as claimed in claim 1, it is characterised in that described flue gas waste heat recovery system also includes steam trap connection；
The condensation-water drain of described heat pipe air heater and the condensation-water drain of described condensing feed-water heater are all communicated with described steam trap connection.
10. flue gas waste heat recovery system as claimed in claim 9, it is characterised in that the outlet of described steam trap connection is communicated to neutralization pond.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521136634.6U CN205447787U (en) | 2015-12-30 | 2015-12-30 | Flue gas waste heat recovery system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521136634.6U CN205447787U (en) | 2015-12-30 | 2015-12-30 | Flue gas waste heat recovery system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205447787U true CN205447787U (en) | 2016-08-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521136634.6U Expired - Fee Related CN205447787U (en) | 2015-12-30 | 2015-12-30 | Flue gas waste heat recovery system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205447787U (en) |
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2015
- 2015-12-30 CN CN201521136634.6U patent/CN205447787U/en not_active Expired - Fee Related
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160810 Termination date: 20161230 |
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| CF01 | Termination of patent right due to non-payment of annual fee |