CN202209691U - Reheating separate-control phase change air preheating system - Google Patents
Reheating separate-control phase change air preheating system Download PDFInfo
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- CN202209691U CN202209691U CN2011202616556U CN201120261655U CN202209691U CN 202209691 U CN202209691 U CN 202209691U CN 2011202616556 U CN2011202616556 U CN 2011202616556U CN 201120261655 U CN201120261655 U CN 201120261655U CN 202209691 U CN202209691 U CN 202209691U
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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
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
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Abstract
The utility model relates to a reheating separate-control phase change air preheating system comprising an air preheater (3), and a smoke channel (4) and an air channel (5) both connected to the air preheater, wherein a low-temperature heat release device (22) and an air reheating heat absorption device (6) are arranged in front of and behind the air preheater (3) on the air channel (5) in an air flowing direction, respectively; a high-temperature heat absorption device (8) is arranged in front of the air preheater (3) on the smoke channel (4) in a smoke flowing direction; a steam main pipe (19) connected with the low-temperature heat release device (22) is communicated with the air reheating heat absorption device (6) and the high-temperature heat absorption device (8) through branch pipes, respectively; and a condensed water main pipe (20) connected with the low-temperature heat release device (22) is communicated with the high-temperature heat absorption device (8) and the air reheating heat absorption device (6) through branch pipes, respectively. The reheating separate-control phase change air preheating system is capable of flexibly adjusting the waste heat recycling quantity and the smoke exhaust temperature based on the change of coal season and unit load.
Description
Technical field
The utility model relates to air preheating system, and particularly, the utility model relates to a kind of back-heating type and divides control phase transformation air preheating system.
Background technology
Because the variation of coal, status of equipment, season and unit load; And reason such as design error; Exhaust gas temperature behind the actual motion air preheater usually design load under the off-design operating mode is more; Because the conventional air preheater all adopts fixing design parameter according to design conditions, the exchange capability of heat of heat transmission equipment is unadjustable.Thereby, perhaps, cause energy loss very big, perhaps because the low excessively cold end corrosion that causes air preheater of exhaust gas temperature because exhaust gas temperature is too high.
In the winter time, be employed in usually the air themperature that steam air heater improves the air preheater inlet is set before the air preheater, avoid the cold end corrosion of air preheater heat exchange material.The thermal source of steam air heater is all from steam, and this can increase the loss of higher quality heat, reduces the thermal efficiency of unit.
, application number proposed to divide control phase-change heat-exchange technology in being 201110153486.9,201110177653.3 and 201110177569.1 patent application; Divide the phase transition parameter in the control phase-change heat-exchange device to equal wall temperature and the caloric receptivity that setting value is controlled thermal source heat sink heat exchanger through control; When reducing exhaust gas temperature, avoid acid corrosion.The phase transition parameter setting value of this branch control phase-change heat-exchange technology confirms that according to the acid dew point of flue gas acid dew point is constant, and then phase transition parameter is constant.But aforesaid branch control phase-change heat-exchange technology is because the thermal source heat sink is positioned at the back of original smoke exhaust heat use device; Flue-gas temperature is lower; Thereby the heat exchanger wall surface temperature and the flue gas acid dew point of phase-change heat-exchange thermal source heat sink are more approaching; The danger property of equipment cold end corrosion is bigger, and is higher to the reliability requirement of control system; Simultaneously, because the thermal source heat sink is positioned at the back of original smoke exhaust heat use device, flue-gas temperature is lower, thereby the requirement of the heat exchanger area of the phase-change heat-exchange thermal source heat sink at low temperature place is bigger, thereby flue gas resistance is also bigger, the stifled more easily ash in this place; It is higher that the heat-transfer surface of branch control phase-change heat-exchange technology thermal source heat sink improves cost wear-resisting, corrosion resisting property, and generation leakage back performance descends bigger, and maintenance difficulties is bigger.
The utility model content
The purpose of the utility model is to provide a kind of back-heating type to divide control phase transformation air preheating system.
To achieve these goals, the back-heating type that the utility model provides divides control phase transformation air preheating system: the exhaust gases passes 4 and air duct 5 that comprise air preheater 3 and be attached thereto,
Low temperature heat-releasing device 22 and air backheating heat sink 6 are set respectively along air-flow direction air preheater 3 front and back on said air duct 5;
Along the flow of flue gas direction high temperature heat sink 8 is set before the air preheater 3 on exhaust gases passes 4;
The main steam range 19 that connects on the said low temperature heat-releasing device 22 is divided into backheat heat sink steam pipe 9 and 11 two arms of high temperature heat sink steam pipe at least, and is communicated with respectively at air backheating heat sink 6 and high temperature heat sink 8;
The condensate house steward 20 who connects on the said low temperature heat-releasing device 22 is divided into high temperature heat sink condensate pipe 12 and 10 two arms of backheat heat sink condensate pipe at least, and is communicated with high temperature heat sink 8 and air backheating heat sink 6 respectively;
On described high temperature heat sink condensate pipe 12, be provided with high temperature heat sink condensate control valve 13, on described backheat heat sink condensate pipe 10, be provided with backheat heat sink condensate control valve 14;
Wherein, Condensed water gets into high temperature heat sink 8 and air backheating heat sink 6 respectively through high temperature heat sink condensate pipe 12 and 10 two arms of backheat heat sink condensate pipe, is evaporated to steam through heat absorption, gets into high temperature heat sink steam pipe 11 and backheat heat sink steam pipe 9 then respectively; Converge and get into main steam range 19; Get into low temperature heat-releasing device 22 at last, the air that in low temperature heat-releasing device 22, feeds with air duct 5 carries out heat exchange, has improved the temperature of air; Steam is condensed into condensate and gets among the condensate house steward 20 realization circulation heat transfer cycle simultaneously.
As a kind of improvement of such scheme, the main steam range 19 that connects on the said low temperature heat-releasing device 22 is divided into backheat heat sink steam pipe 9, high temperature heat sink steam pipe 11 and 15 3 arms of external thermal source steam supply pipe;
The condensate house steward 20 who connects on the said low temperature heat-releasing device 22 is divided into high temperature heat sink condensate pipe 12, backheat heat sink condensate pipe 10 and 16 3 arms of external thermal source return pipe at least;
And on described external thermal source steam supply pipe 15 and external thermal source return pipe 16, be respectively equipped with external thermal source steam supply valve 17 and external thermal source back-water valve (BWV) 18.
As another improvement of such scheme, described condensate house steward 20 is provided with circulating pump 21.
As also a kind of improvement of such scheme,, be provided with sky prognosis flue-gas temperature sensor 1 on the said exhaust gases passes 4 behind the air preheater 3 along the flow of flue gas direction;
Along air-flow direction, on the said air duct 5 before the air preheater 3 with air backheating heat sink 6 after be respectively equipped with empty in advance before air temperature sensor 7 behind air temperature sensor 2 and the regenerative apparatus.
The back-heating type of the utility model divides the air preheat method of control phase transformation system may further comprise the steps:
Condensate among the condensate house steward 20 is divided into two branch roads, and gets into high temperature heat sink 8 and air backheating heat sink 6 through high temperature heat sink condensate pipe 12 and backheat heat sink condensate pipe 10 respectively;
The condensate that gets into high temperature heat sink 8 is through absorbing heat in the exhaust gases passes 4 before air preheater 3, its inner liquid is evaporated to steam and gets into high temperature heat sink steam pipe 11;
The condensate that gets into air backheating heat sink 6 is through absorbing heat in the air duct behind air preheater 35, its internal liquid is evaporated to steam and gets into backheat heat sink steam pipe 9;
Wherein the steam in high temperature heat sink steam pipe 11 and the backheat heat sink steam pipe 9 converges entering main steam range 19; Get into low temperature heat-releasing device 22 at last; The air that in low temperature heat-releasing device 22, feeds with air duct 5 carries out heat exchange; Heated air, steam is condensed into condensate and gets among the condensate house steward 20 realization circulation heat transfer cycle simultaneously.
The phase-change heat-exchange control method of described high temperature heat sink 8 is:
The phase inversion heat of high temperature heat sink is regulated through the water yield of controlling in this device, and the parameter of its phase-change heat-exchange becomes with regulation and control; High temperature heat sink condensate control valve 13 sends instruction by corresponding controllers and regulates aperture according to the measuring-signal of empty prognosis flue-gas temperature sensor 1 and the measuring-signal of high temperature heat sink 8 liquid levels;
When the flue-gas temperature of measuring was lower than the setting value of sky prognosis flue-gas temperature, this controller sent the liquid level setting value that instruction reduces high temperature heat sink 8, otherwise increased the liquid level setting value;
When the liquid level of high temperature heat sink 8 was higher than aforementioned corresponding liquid level setting value, this controller sends instruction reduced high temperature heat sink condensate control valve 13 apertures, otherwise opens big aperture, so that liquid level and the setting value measured are consistent.
The phase-change heat-exchange control method of said air backheating heat sink 6 is:
Backheat heat sink condensate control valve 14 sends instruction by corresponding controllers and regulates its aperture according to the temperature signal of empty prognosis flue-gas temperature sensor 1 or empty in advance preceding air temperature sensor 2 measurements and the liquid level in the air backheating heat sink 6;
When empty prognosis flue-gas temperature sensor 1, empty in advance before the temperature signal measured of air temperature sensor 2 measurement temperature signal or both mean value or when being lower than corresponding desired temperature by the calculation of Wall Temperature value that both confirm; This controller sends instruction opens greatly backheat heat sink condensate control valve 14 apertures; Otherwise turn down, so that temperature measurement signal value and respective settings value are consistent;
When the liquid level in the air backheating heat sink 6 is higher than corresponding liquid level setting value; This controller sends instruction is forced closed backheat heat sink condensate control valve 14; When the liquid level in air backheating heat sink 6 was lower than respective settings value 10～2000mm, this controller was removed the positive closing instruction of backheat heat sink condensate control valve 14.
Said external thermal source steam supply valve 17 control procedures are:
The temperature signal that external thermal source steam supply valve 17 is measured according to air temperature sensor behind the regenerative apparatus 7 is controlled aperture;
When the temperature signal value of 7 measurements of air temperature sensor behind the regenerative apparatus is lower than corresponding desired temperature, external thermal source steam supply valve 17 apertures will be opened greatly, otherwise turned down, so that temperature measurement signal value and respective settings value are consistent;
When external thermal source steam supply valve 17 was opened, external thermal source back-water valve (BWV) 18 was also opened corresponding aperture, with the balance that keeps intrasystem condensing capacity with stable.
The advantage of the utility model:
1, the utility model can be adjusted waste heat recovery amount and flue gas exhaust gas temperature flexibly according to the variation of coal, status of equipment, season and unit load.Branch control phase-change heat-exchange system through the utility model directly passes to cold air from the high-temperature flue gas heat absorption, can when reducing exhaust gas temperature, improve the wall temperature of air preheater, and the anti-low-temperature corrosion ability improves.
2, the branch control phase-change heat-exchange system through the utility model can make the cold air before the entering air preheater obtain the backheat heating, can practice thrift the steam supply of steam air heater, improves the thermal efficiency of unit.
3, the utility model is more thorough, safer to minute protection of control phase change device.The waste heat recovery apparatus maintenance cost reduces, and system's operational reliability improves.Because the high temperature heat sink is positioned at the front of original smoke exhaust heat use device, flue-gas temperature is higher, thereby the security of phase change heat-exchange apparatus anti-low-temperature corrosion is higher, also is difficult for taking place stifled ash.General heat accumulating type waste heat recovery heat-exchanger rig wearability performance is high than the phase-change heat-exchange device usually, and the common employing of low temperature part resistant material, thereby the life-span is higher.Performance decline behind the stifled ash of this kind equipment simultaneously is slower, also allows the reduction of a certain amount of leakage and exchange capability of heat, and performance descends also less to the normal continuous influence on system operation of equipment and affiliated system, and the repair and maintenance cost is low than the phase-change heat-exchange device.
4, under the prerequisite of heating surface safety, can reduce the cost of UTILIZATION OF VESIDUAL HEAT IN by the heat-storing material of the alternative heat regenerator of spiral fin coil.
5, the heat-storing material wall temperature correlation of both mean values of empty prognosis flue-gas temperature and empty in advance preceding air themperature and air preheater is better, serves as the control parameter with it, prevents that the reliability of air preheater generation cold end corrosion is higher.
6, control easy realization of cold end corrosion method of waste heat recovery heat-exchanger rig through the control exhaust gas temperature; Usually before at original smoke exhaust heat use device (like heat regenerator, tubular air preheater or economizer etc.); The heating surface arrangement space of phase-change heat-exchange device is more sufficient, and application flexibility is higher.
Description of drawings
Fig. 1 is that the back-heating type of the utility model divides control phase transformation air preheating system sketch map.
The accompanying drawing sign
1, empty prognosis flue-gas temperature sensor 2, empty in advance before air temperature sensor
3, air preheater 4, exhaust gases passes 5, air duct
6, air temperature sensor behind air backheating heat sink 7, the regenerative apparatus
8, high temperature heat sink 9, backheat heat sink steam pipe
10, backheat heat sink condensate pipe 11, high temperature heat sink steam pipe
12, high temperature heat sink condensate pipe 13, high temperature heat sink condensate control valve
14, backheat heat sink condensate control valve 15, external thermal source steam supply pipe
16, external thermal source return pipe 17, external thermal source steam supply valve
18, external thermal source back-water valve (BWV) 19, main steam range
20, condensate house steward 21, circulating pump
22, low temperature heat-releasing device
The specific embodiment
The back-heating type that the utility model proposes divides control phase transformation air preheating system shown in accompanying drawing 1, and capital equipment comprises:
Empty prognosis flue-gas temperature sensor 1; Empty in advance preceding air temperature sensor 2; Air preheater 3; Exhaust gases passes 4; Air duct 5; Air backheating heat sink 6; Air temperature sensor 7 behind the regenerative apparatus; High temperature heat sink 8; Backheat heat sink steam pipe 9; Backheat heat sink condensate pipe 10; High temperature heat sink steam pipe 11; High temperature heat sink condensate pipe 12; High temperature heat sink condensate control valve 13; Backheat heat sink condensate control valve 14; External thermal source steam supply pipe 15; External thermal source return pipe 16; External thermal source steam supply valve 17; External thermal source back-water valve (BWV) 18; Main steam range 19; Condensate house steward 20; Circulating pump 21; Low temperature heat-releasing device 22.
The back-heating type of the utility model divides consisting of of control phase transformation air preheating system:
(by flue gas flow direction) is provided with high temperature heat sink 8 before the air preheater 3 on exhaust gases passes 4; Before the air preheater 3 and back (by air flow) is respectively equipped with low temperature heat-releasing device 22 and air backheating heat sink 6 on air duct 5.
Main steam range 19 and 3 branch roads of linking with low temperature heat-releasing device 22 steam headers link, backheat heat sink steam pipe 9 and external thermal source steam supply pipe 15 that 3 branch roads are respectively the high temperature heat sink steam pipe 11 that links with high temperature heat sink 8 steam headers, link with air backheating heat sink 6 steam headers;
Condensate house steward 20 and 3 branch roads of linking with low temperature heat-releasing device 22 condensate headers link, backheat heat sink condensate pipe 10 and external thermal source return pipe 16 that 3 branch roads are respectively the high temperature heat sink condensate pipe 12 that links with high temperature heat sink 8 condensate headers, link with air backheating heat sink 6 condensate headers;
Aforementioned high temperature heat sink condensate pipe 12 is provided with high temperature heat sink condensate control valve 13; Aforementioned backheat heat sink condensate pipe 10 is provided with backheat heat sink condensate control valve 14; Aforementioned external thermal source steam supply pipe 15 is provided with external thermal source steam supply valve 17.
Aforementioned condensate house steward 20 is provided with circulating pump 21.
The air preheater of the utility model also can be other residual heat using device, and flue gas and air also can be other medium.The system of the utility model can adapt to above-mentioned change and not influence the performance of its performance.
The course of work of system is:
Evaporated liquor in the high temperature heat sink 8 undergoes phase transition and is converted into steam entering high temperature heat sink steam pipe 11 from the flue gas heat absorption of exhaust gases passes 4 interior air preheaters 3 preceding (pressing flue gas flow direction); Evaporated liquor in the air backheating heat sink 6 undergoes phase transition and is converted into steam entering backheat heat sink steam pipe 9 from the high temperature air heat absorption of air duct 5 interior air preheaters 3 backs (pressing air flow); The steam of aforementioned generation both converge get into main steam range 19 after, get into then in the low temperature heat-releasing device 22, the Cryogenic air of heat transferred air preheater 4 preceding (by air flows) air duct 5 in that steam is carried also undergoes phase transition and is converted into condensate; This condensate gets into condensate house steward 20, after circulating pump 21 boosts, gets into high temperature heat sink condensate pipe 12 and backheat heat sink condensate pipe 10 respectively; The condensate that gets into high temperature heat sink condensate pipe 12 has got into high temperature heat sink 8, and the condensate that gets into backheat heat sink condensate pipe 10 has got into air backheating heat sink 6, both separately once more heat absorption be evaporated to steam and carry out new heat transfer cycle.
The concrete control method of system's operation is following:
Branch control phase transformation air preheating system and method that the utility model proposes divide the control phase transformation can be divided into two parts, promptly control the phase-change heat-exchange of high temperature heat sink 8 and air backheating heat sink 6 respectively.
High temperature heat sink condensate control valve 13 sends instruction by corresponding controllers and regulates aperture according to the measuring-signal of empty prognosis flue-gas temperature sensor 1 and the measuring-signal of high temperature heat sink 8 liquid levels.When the flue-gas temperature of measuring was lower than the setting value of sky prognosis flue-gas temperature, this controller sent instruction and turns down the aperture of control valve 13, otherwise opens big aperture, so that flue-gas temperature and the setting value measured are consistent.When the liquid level of high temperature heat sink 8 is higher than corresponding liquid level setting value; This controller sends instruction is forced closed high temperature heat sink condensate control valve 13; Do not allow to open; When the liquid level of high temperature heat sink 8 was lower than respective settings value 10～500mm, this controller was removed the positive closing instruction of high temperature heat sink condensate control valve 13.
Backheat heat sink condensate control valve 14 sends instruction by corresponding controllers and regulates its aperture according to the temperature signal of empty prognosis flue-gas temperature sensor 1 or empty in advance preceding air temperature sensor 2 measurements and the liquid level in the air backheating heat sink 6.When empty prognosis flue-gas temperature sensor 1, empty in advance before both mean values of temperature signal of air temperature sensor 2 measurements; Perhaps when the temperature signal of empty prognosis flue-gas temperature sensor 1 or empty in advance preceding air temperature sensor 2 measurements is lower than corresponding desired temperature; This controller sends instruction opens greatly backheat heat sink condensate control valve 14 apertures; Otherwise turn down, so that temperature measurement signal value and respective settings value are consistent.When the liquid level in the air backheating heat sink 6 is higher than corresponding liquid level setting value; This controller sends instruction is forced closed backheat heat sink condensate control valve 14; Do not allow to open; When the liquid level in air backheating heat sink 6 was lower than respective settings value 10～500mm, this controller was removed the positive closing instruction of backheat heat sink condensate control valve 14.
The temperature signal that external thermal source steam supply valve 17 is measured according to air temperature sensor behind the regenerative apparatus 7 is controlled aperture; When the temperature signal value of 7 measurements of air temperature sensor behind the regenerative apparatus is lower than corresponding desired temperature; External thermal source steam supply valve 17 apertures will be opened greatly; Otherwise turn down, so that temperature measurement signal value and respective settings value are consistent.When external thermal source steam supply valve 17 was opened, external thermal source back-water valve (BWV) 18 was also opened corresponding aperture, with the balance that keeps intrasystem condensing capacity with stable.
The back-heating type that the utility model proposes divides control phase transformation air preheating system and method; The setting value of the mean value of the setting value of its sky prognosis flue-gas temperature and empty prognosis flue-gas temperature, empty in advance preceding air themperature is to confirm according to the content of sulfur dioxide of flue gas monitoring; Content of sulfur dioxide is high; Then the setting value of exhaust gas temperature is high, and vice versa.This setting value can manually be set also automatically setting.
The branch control phase-change heat-exchange technology of the utility model proposition, constant even the content of sulfur dioxide of flue gas monitoring is confirmed, the phase transition parameter of thermal source heat sink is also constantly regulated along with the variation of heat transfer boundary condition and is changed, and is not that setting is constant.
Claims (4)
1. a back-heating type divides control phase transformation air preheating system, and exhaust gases passes (4) and air duct (5) that said air preheating system comprises air preheater (3) and is attached thereto is characterized in that,
Before and after said air duct (5) is gone up air preheater (3), low temperature heat-releasing device (22) and air backheating heat sink (6) are set respectively along air-flow direction;
Go up the preceding high temperature heat sink (8) that is provided with of air preheater (3) along the flow of flue gas direction at exhaust gases passes (4);
Said low temperature heat-releasing device (22) is gone up the main steam range (19) that connects and is divided into backheat heat sink steam pipe (9) and (11) two arms of high temperature heat sink steam pipe at least, and is communicated with air backheating heat sink (6) and high temperature heat sink (8) respectively;
The coconnected condensate house steward of said low temperature heat-releasing device (22) (20) is divided into high temperature heat sink condensate pipe (12) and (10) two arms of backheat heat sink condensate pipe at least, and is communicated with high temperature heat sink (8) and air backheating heat sink (6) respectively;
On described high temperature heat sink condensate pipe (12), be provided with high temperature heat sink condensate control valve (13), on described backheat heat sink condensate pipe (10), be provided with backheat heat sink condensate control valve (14);
Wherein, Condensed water gets into high temperature heat sink (8) and air backheating heat sink (6) respectively through high temperature heat sink condensate pipe (12) and (10) two arms of backheat heat sink condensate pipe, is evaporated to steam through heat absorption, gets into high temperature heat sink steam pipe (11) and backheat heat sink steam pipe (9) then respectively; Converge and get into main steam range (19); Get into low temperature heat-releasing device (22) at last, the air that in low temperature heat-releasing device (22), feeds with air duct (5) carries out heat exchange, has improved the temperature of air; Steam is condensed into condensate and gets among the condensate house steward (20) realization circulation heat transfer cycle simultaneously.
2. back-heating type according to claim 1 divides control phase transformation air preheating system, it is characterized in that,
The said main steam range (19) that is connected with low temperature heat-releasing device (22) is divided into backheat heat sink steam pipe (9), high temperature heat sink steam pipe (11) and (15) three arms of external thermal source steam supply pipe;
The said condensate house steward (20) who is connected with low temperature heat-releasing device (22) is divided into high temperature heat sink condensate pipe (12), backheat heat sink condensate pipe (10) and (16) three arms of external thermal source return pipe at least;
And on described external thermal source steam supply pipe (15) and external thermal source return pipe (16), be respectively equipped with external thermal source steam supply valve (17) and external thermal source back-water valve (BWV) (18).
3. back-heating type according to claim 1 divides control phase transformation air preheating system, it is characterized in that described condensate house steward (20) is provided with circulating pump (21).
4. back-heating type according to claim 1 divides control phase transformation air preheating system, it is characterized in that,
Along the flow of flue gas direction, said exhaust gases passes (4) is provided with sky prognosis flue-gas temperature sensor (1) after going up air preheater (3);
Along air-flow direction, said air duct (5) go up air preheater (3) preceding with air backheating heat sink (6) after be respectively equipped with empty in advance before air temperature sensor (7) behind air temperature sensor (2) and the regenerative apparatus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202616556U CN202209691U (en) | 2011-07-22 | 2011-07-22 | Reheating separate-control phase change air preheating system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202616556U CN202209691U (en) | 2011-07-22 | 2011-07-22 | Reheating separate-control phase change air preheating system |
Publications (1)
| Publication Number | Publication Date |
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| CN202209691U true CN202209691U (en) | 2012-05-02 |
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ID=45989238
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202616556U Withdrawn - After Issue CN202209691U (en) | 2011-07-22 | 2011-07-22 | Reheating separate-control phase change air preheating system |
Country Status (1)
| Country | Link |
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| CN (1) | CN202209691U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102889809A (en) * | 2011-07-22 | 2013-01-23 | 中国科学院过程工程研究所 | Regenerative controlled phase-change air pre-heating system and pre-heating method |
| CN103672936A (en) * | 2012-09-26 | 2014-03-26 | 上海伏波环保设备有限公司 | Natural circulation indirect type flue gas reheater |
-
2011
- 2011-07-22 CN CN2011202616556U patent/CN202209691U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102889809A (en) * | 2011-07-22 | 2013-01-23 | 中国科学院过程工程研究所 | Regenerative controlled phase-change air pre-heating system and pre-heating method |
| CN103672936A (en) * | 2012-09-26 | 2014-03-26 | 上海伏波环保设备有限公司 | Natural circulation indirect type flue gas reheater |
| CN103672936B (en) * | 2012-09-26 | 2016-01-06 | 上海伏波环保设备有限公司 | Natural Circulation indirect type smoke re-heater |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20120502 Effective date of abandoning: 20140730 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20120502 Effective date of abandoning: 20140730 |
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| RGAV | Abandon patent right to avoid regrant |