CN109539298A - A kind of anti-air preheater cold end ABS blocking thermal wind sensor system and its application method - Google Patents
A kind of anti-air preheater cold end ABS blocking thermal wind sensor system and its application method Download PDFInfo
- Publication number
- CN109539298A CN109539298A CN201811523506.5A CN201811523506A CN109539298A CN 109539298 A CN109539298 A CN 109539298A CN 201811523506 A CN201811523506 A CN 201811523506A CN 109539298 A CN109539298 A CN 109539298A
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- China
- Prior art keywords
- air
- air duct
- cold end
- recirculating
- air preheater
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
- F23L15/00—Heating of air supplied for combustion
- F23L15/02—Arrangements of regenerators
-
- 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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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Air Supply (AREA)
Abstract
The present invention relates to a kind of anti-air preheater cold end ABS blocking thermal wind sensor system and its application methods.For solving air preheater blockage problem caused by the low ABS condensation of air preheater cold junction temperature.In the present invention, rotary regenerative air heater is provided with air preheater cold end heating cabinet in Secondary Air side, and the entrance of recirculating air duct hot arc is connected to heat primary air road, and outlet is connected to air preheater cold end heating cabinet；The entrance that cold section of recirculating air duct is connected to air preheater cold end heating cabinet, and outlet is connected to hot secondary air duct；Recirculating air duct entrance insertion plate door, recirculating air duct adjust door and recirculating air duct outlet insertion plate door is sequentially arranged on recirculating air duct hot arc.The present invention is by high-temperature hot-air adverse current heating air preheater cold end, so that the ABS of air preheater low-temperature zone ABS area easily generated be inhibited to generate；Moreover, the pressure of heat primary air is higher than hot Secondary Air, system do not need that booster fan additionally is arranged, system structure simply, small investment, maintenance it is small.
Description
Technical field
The present invention relates to a kind of thermal wind sensor system, especially a kind of anti-air preheater cold end ABS blocks thermal wind sensor
System and its application method.
Background technique
With coming into operation for SCR, hydrogen sulfate ammonia+ash blocking air preheater caused by the escaping of ammonia rate is high has become many fire
Power power plant technical problem to be solved, such as application No. is 201710537232.4 Chinese patent, many factory's air-introduced machine power outputs
Deficiency, unit output is limited, or even is forced stop cleaning, and air preheater cleaning is also extremely difficult.Therefore it provides a kind of advanced suitable
Technology becomes the direction that the domain engineers make great efforts to solve this problem.
Summary of the invention
It is an object of the invention to overcome the above deficiencies in the existing technologies, and provide a kind of anti-air preheater cold end
ABS blocks thermal wind sensor system and its application method, for solving air preheater caused by the low ABS condensation of air preheater cold junction temperature
Blockage problem.
Technical solution used by the present invention solves the above problems is: a kind of anti-air preheater cold end ABS blocking hot wind follows again
Loop system, which is characterized in that export insertion plate door, recirculating air duct including heat primary air road, rotary regenerative air heater, recirculating air duct
Adjust door, recirculating air duct hot arc, recirculating air duct entrance insertion plate door, hot secondary air duct, cold section of recirculating air duct and air preheater
Cold end heating cabinet；The rotary regenerative air heater is provided with air preheater cold end heating cabinet, the recirculating air duct heat in Secondary Air side
The entrance of section is connected to heat primary air road, and the outlet of the recirculating air duct hot arc is connected to air preheater cold end heating cabinet；It is described
The entrance that cold section of recirculating air duct is connected to air preheater cold end heating cabinet, and the outlet of cold section of the recirculating air duct is connected to heat two
Secondary air duct；The recirculating air duct entrance insertion plate door, recirculating air duct adjust door and recirculating air duct outlet insertion plate door is successively pacified
On recirculating air duct hot arc.
Furthermore, it is equipped in the air preheater cold end heating cabinet and accumulation of heat member identical in rotary regenerative air heater
Part.
Furthermore, slit is offered on the plane steel plate on the air preheater cold end heating cabinet at heat exchanger fin to shape
At spout, and plate hot wind deflector is installed in air preheater cold end heating cabinet, for realizing in air preheater cold end heating cabinet
Each slit spout flow is essentially identical.
The application method of anti-air preheater cold end ABS blocking thermal wind sensor system is as follows: when unit underload or monitoring
When air preheater cold junction temperature is lower, start thermal wind sensor system；Successively open recirculating air duct entrance insertion plate door, reduced air
Road exports insertion plate door and recirculating air duct adjusts door, and heat primary air enters air preheater by the recycled air duct hot arc in heat primary air road
Cold end heating cabinet heat storage element improves air preheater cold junction temperature, and the heat primary air after heat exchange leads to hot secondary air duct, with
Hot Secondary Air enters burner hearth together and participates in burning；Heat primary air amount into air preheater cold end heating cabinet is adjusted by recirculating air duct
Door is adjusted according to air preheater cold junction temperature.When system accident situation occurs or need to overhaul, can be exported by recirculating air duct
Insertion plate door and recirculating air duct entrance insertion plate door are isolated.
Furthermore, the rotational order of the rotary regenerative air heater is followed successively by flue gas, First air, Secondary Air.
Compared with prior art, the present invention having the following advantages that and effect: cold by high-temperature hot-air adverse current heating air preheater
End, so that the ABS of air preheater low-temperature zone ABS area easily generated be inhibited to generate；Moreover, the pressure of heat primary air is secondary higher than heat
Wind, system do not need that booster fan is additionally arranged, and system structure is simple, small investment, maintenance are small, this is compared with prior art
Maximum difference and most important creative feature.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of anti-air preheater cold end ABS blocking thermal wind sensor system in the embodiment of the present invention.
In figure: 1- heat primary air road, 2- rotary regenerative air heater, 3- recirculating air duct export insertion plate door, 4- recirculating air duct
Adjust door, 5- recirculating air duct hot arc, 6- recirculating air duct entrance insertion plate door, the hot secondary air duct of 7-, cold section of 8- recirculating air duct,
9- air preheater cold end heating cabinet.
Specific embodiment
The present invention is described in further detail with reference to the accompanying drawing and by embodiment, and following embodiment is to this hair
Bright explanation and the invention is not limited to following embodiments.
Embodiment.
Referring to Fig. 1, the anti-air preheater cold end ABS in the present embodiment blocks thermal wind sensor system, including heat primary air road
1, rotary regenerative air heater 2, recirculating air duct outlet insertion plate door 3, recirculating air duct adjust door 4, recirculating air duct hot arc 5, follow again
Ring tunnel inlet insertion plate door 6, hot secondary air duct 7, cold section 8 of recirculating air duct and air preheater cold end heating cabinet 9.
Rotary regenerative air heater 2 is provided with air preheater cold end heating cabinet 9, the entrance of recirculating air duct hot arc 5 in Secondary Air side
It is connected to heat primary air road 1, the outlet of recirculating air duct hot arc 5 is connected to air preheater cold end heating cabinet 9；Cold section of recirculating air duct
8 entrance is connected to air preheater cold end heating cabinet 9, and the outlet that cold section 8 of recirculating air duct is connected to hot secondary air duct 7；Recycling
Tunnel inlet insertion plate door 6, recirculating air duct adjust door 4 and recirculating air duct outlet insertion plate door 3 is sequentially arranged at recirculating air duct
On hot arc 5.
In the present embodiment, it is equipped in air preheater cold end heating cabinet 9 and heat accumulating element identical in rotary regenerative air heater 2.
Slit is offered on plane steel plate on air preheater cold end heating cabinet 9 at heat exchanger fin to form spout, and air preheater cold end adds
Plate hot wind deflector is installed in hot storehouse 9, it is basic for realizing each slit spout flow in air preheater cold end heating cabinet 9
It is identical.
The application method of anti-air preheater cold end ABS blocking thermal wind sensor system is as follows: when unit underload or monitoring
When air preheater cold junction temperature is lower, start thermal wind sensor system；Successively open recirculating air duct entrance insertion plate door 6, recycling
Ducting outlet insertion plate door 3 and recirculating air duct adjust door 4, and heat primary air is entered by the recycled air duct hot arc 5 in heat primary air road 1
9 heat storage element of air preheater cold end heating cabinet improves air preheater cold junction temperature, and it is secondary that the heat primary air after heat exchange leads to heat
Air duct 7 enters burner hearth together with hot Secondary Air and participates in burning；Into air preheater cold end heating cabinet 9 heat primary air amount by following again
Ring air duct adjusts door 4 and is adjusted according to air preheater cold junction temperature.It, can be by following again when system accident situation occurs or need to overhaul
Ring ducting outlet insertion plate door 3 and recirculating air duct entrance insertion plate door 6 are isolated.
In the present embodiment, the rotational order of rotary regenerative air heater 2 is followed successively by flue gas, First air, Secondary Air.
It is any to be familiar with although the present invention is disclosed as above with embodiment, its protection scope being not intended to limit the invention
The technical staff of this technology changes and retouches made without departing from the spirit and scope of the invention, should belong to this hair
Bright protection scope.
Claims (6)
1. a kind of anti-air preheater cold end ABS blocks thermal wind sensor system, which is characterized in that including heat primary air road, rotary
Air preheater, recirculating air duct outlet insertion plate door, recirculating air duct adjust door, recirculating air duct hot arc, recirculating air duct entrance and insert
Ban Men, hot secondary air duct, cold section of recirculating air duct and air preheater cold end heating cabinet；The rotary regenerative air heater is set in Secondary Air side
It is equipped with air preheater cold end heating cabinet, the entrance of the recirculating air duct hot arc is connected to heat primary air road, the recirculating air duct
The outlet of hot arc is connected to air preheater cold end heating cabinet；The entrance of cold section of the recirculating air duct is connected to the heating of air preheater cold end
The outlet in storehouse, cold section of the recirculating air duct is connected to hot secondary air duct；The recirculating air duct entrance insertion plate door, reduced air
Road adjusts door and recirculating air duct outlet insertion plate door is sequentially arranged on recirculating air duct hot arc.
2. anti-air preheater cold end ABS according to claim 1 blocks thermal wind sensor system, which is characterized in that the sky
It is equipped in pre- device cold end heating cabinet and heat accumulating element identical in rotary regenerative air heater.
3. anti-air preheater cold end ABS according to claim 1 blocks thermal wind sensor system, which is characterized in that the sky
Slit is offered on plane steel plate on pre- device cold end heating cabinet at heat exchanger fin to form spout, and air preheater cold end heating cabinet
Plate hot wind deflector is inside installed, it is identical for realizing each slit spout flow in air preheater cold end heating cabinet.
4. a kind of use of anti-air preheater cold end ABS blocking thermal wind sensor system as claimed in any one of claims 1-3
Method, which is characterized in that the application method is as follows: it when unit underload or when monitoring that air preheater cold junction temperature is lower, opens
Dynamic thermal wind sensor system；Successively open recirculating air duct entrance insertion plate door, recirculating air duct outlet insertion plate door and reduced air
Road adjusts door, and heat primary air enters air preheater cold end heating cabinet heat storage element by the recycled air duct hot arc in heat primary air road
Air preheater cold junction temperature is improved, the heat primary air after heat exchange leads to hot secondary air duct, and burner hearth ginseng is entered together with hot Secondary Air
With burning；Into air preheater cold end heating cabinet heat primary air amount by recirculating air duct adjust door according to air preheater cold junction temperature into
Row is adjusted.
5. the application method of anti-air preheater cold end ABS blocking thermal wind sensor system according to claim 4, feature exist
In when system accident situation occurs or need to overhaul, by recirculating air duct outlet insertion plate door and recirculating air duct entrance insertion plate door
It is isolated.
6. the application method of anti-air preheater cold end ABS blocking thermal wind sensor system according to claim 4, feature exist
In the rotational order of the rotary regenerative air heater is followed successively by flue gas, First air, Secondary Air.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811523506.5A CN109539298A (en) | 2018-12-13 | 2018-12-13 | A kind of anti-air preheater cold end ABS blocking thermal wind sensor system and its application method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811523506.5A CN109539298A (en) | 2018-12-13 | 2018-12-13 | A kind of anti-air preheater cold end ABS blocking thermal wind sensor system and its application method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109539298A true CN109539298A (en) | 2019-03-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811523506.5A Pending CN109539298A (en) | 2018-12-13 | 2018-12-13 | A kind of anti-air preheater cold end ABS blocking thermal wind sensor system and its application method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110594776A (en) * | 2019-08-28 | 2019-12-20 | 华电电力科学研究院有限公司 | Air preheater hot air recycling system and working method thereof |
| CN111068477A (en) * | 2019-12-24 | 2020-04-28 | 中国大唐集团科学技术研究院有限公司西北电力试验研究院 | System and method for relieving blockage of air preheater through flue gas recirculation |
| CN112555889A (en) * | 2020-12-24 | 2021-03-26 | 重庆大唐国际石柱发电有限责任公司 | Air preheater anti-blocking hot air recirculation system |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105864817A (en) * | 2016-05-06 | 2016-08-17 | 华电电力科学研究院 | System and method for preventing AH blockage and heat exchange surface corrosion by hot secondary air supercharged countercurrent |
| CN105864816A (en) * | 2016-05-06 | 2016-08-17 | 华电电力科学研究院 | System and method for inhibiting AH blockage due to ABS solidification through hot primary air countercurrent circulation |
-
2018
- 2018-12-13 CN CN201811523506.5A patent/CN109539298A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105864817A (en) * | 2016-05-06 | 2016-08-17 | 华电电力科学研究院 | System and method for preventing AH blockage and heat exchange surface corrosion by hot secondary air supercharged countercurrent |
| CN105864816A (en) * | 2016-05-06 | 2016-08-17 | 华电电力科学研究院 | System and method for inhibiting AH blockage due to ABS solidification through hot primary air countercurrent circulation |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110594776A (en) * | 2019-08-28 | 2019-12-20 | 华电电力科学研究院有限公司 | Air preheater hot air recycling system and working method thereof |
| CN111068477A (en) * | 2019-12-24 | 2020-04-28 | 中国大唐集团科学技术研究院有限公司西北电力试验研究院 | System and method for relieving blockage of air preheater through flue gas recirculation |
| CN112555889A (en) * | 2020-12-24 | 2021-03-26 | 重庆大唐国际石柱发电有限责任公司 | Air preheater anti-blocking hot air recirculation system |
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