CN105627289A - Low-temperature economizer combined air heater cyclic utilization system - Google Patents
Low-temperature economizer combined air heater cyclic utilization system Download PDFInfo
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- CN105627289A CN105627289A CN201610150598.1A CN201610150598A CN105627289A CN 105627289 A CN105627289 A CN 105627289A CN 201610150598 A CN201610150598 A CN 201610150598A CN 105627289 A CN105627289 A CN 105627289A
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- low
- water
- pipeline
- economizer
- air heater
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22D—PREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER FOR STEAM GENERATION; FEED-WATER SUPPLY FOR STEAM GENERATION; CONTROLLING WATER LEVEL FOR STEAM GENERATION; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN STEAM BOILERS
- F22D1/00—Feed-water heaters, i.e. economisers or like preheaters
- F22D1/36—Water and air preheating systems
Abstract
The invention belongs to the technical field of power plant smoke waste heat recycling and provides a low-temperature economizer combined air heater cyclic utilization system which is simple in structure, saves energy and reduces cost. The system comprises a low-pressure system, a low-temperature economizer and an air heater. The low-pressure system is communicated with a first water inlet of the low-temperature economizer through a water inlet pipeline, and a first water outlet of the low-temperature economizer is communicated with the low-pressure system through a water return pipeline. A first electromagnetic valve is installed on the first water inlet of the low-temperature economizer, a second water outlet of the low-temperature economizer is connected with a booster pump through a first pipeline, a water outlet of the booster pump is communicated with the air heater through a second pipeline, a water outlet of the air heater is communicated with a second water inlet of the low-temperature economizer through a third pipeline, a fourth electromagnetic valve is installed on the second water inlet of the low-temperature economizer, the water inlet pipeline is communicated with the third pipeline through a water supplement pipeline, and a water supplement electromagnetic valve is connected with the water supplement pipeline in series.
Description
Technical field
The invention belongs to power station flue gas waste heat recovery technical field, particularly relate to a kind of low-level (stack-gas) economizer associating steam air heater cyclic utilization system.
Background technology
Generation current plant smoke residual heat recovery system has two kinds of forms, a kind of without economizer and steam air heater, causes high fume temperature, follow-up fly-ash separator efficiency of dust collection is low, cause containing a large amount of dust in smoke evacuation, owing to dust also containing toxic substance etc., directly enter and air can cause environmental pollution. CN202675725U discloses a kind of fume afterheat and utilizes system, comprise interchanger, cooling tower, lithium bromide refrigerator, high-temp waste gas enters in interchanger, tap water and waste gas heat exchange intensification rear portion are for the production of life, a part is used for lithium bromide refrigerator refrigeration, but steam air heater is not set, causes air preheater low temperature corrosion. Another kind adopts common economizer, system complex, and the hydrophobic trench that drains into cannot reclaim, or by other reducing-and-cooling plant, water temperature is down to the recovery of recyclable state, its cost height, and heat waste is serious.
Summary of the invention
The technical problem to be solved in the present invention is to provide that a kind of structure is simple, save energy, the low-level (stack-gas) economizer associating steam air heater cyclic utilization system that reduces costs.
For solving the problems of the technologies described above, the present invention adopts following technical scheme:
A kind of low-level (stack-gas) economizer associating steam air heater cyclic utilization system, comprise low adding system, low-level (stack-gas) economizer, steam air heater, low adding system is connected with the first water-in of low-level (stack-gas) economizer through suction culvert, first water outlet of low-level (stack-gas) economizer is connected with low adding system through water return pipeline, the first magnetic valve is installed in first water inlet of low-level (stack-gas) economizer, 2nd water outlet of low-level (stack-gas) economizer is connected with topping-up pump through the first pipeline, the water outlet of topping-up pump is connected with steam air heater through the 2nd pipeline, the water outlet of steam air heater is connected with the 2nd water-in of low-level (stack-gas) economizer through the 3rd pipeline, the 4th magnetic valve is installed in 2nd water inlet of low-level (stack-gas) economizer, suction culvert is through water pipe and the 3rd pipeline connection, serial make-up water magnetic valve on water pipe.
Low-level (stack-gas) economizer of the present invention associating steam air heater cyclic utilization system, further, also comprise controller, described suction culvert is installed the first temperature sensor and the first pressure transmitter, water return pipeline is installed the 2nd temperature sensor and the 2nd pressure transmitter, first pipeline is installed three-temperature sensor and the 3rd pressure transmitter, 2nd pipeline is installed the 4th temperature sensor and the 4th pressure transmitter, the exit end of steam air heater installs the 5th temperature sensor and the 5th pressure transmitter, at installed in front the 6th temperature sensor of water pipe and the 6th pressure transmitter on 3rd pipeline, series connection the 2nd magnetic valve on 2nd pipeline, first to the 6th temperature sensor, the signal output terminal of the first to the 6th pressure transmitter is connected with the signal receiving end of controller respectively, the signal output terminal of controller respectively with topping-up pump, first, 2nd, 4th magnetic valve, the signal receiving end of moisturizing magnetic valve connects.
Low-level (stack-gas) economizer of the present invention associating steam air heater cyclic utilization system, further, bypass duct in parallel between the entrance end of described 2nd magnetic valve and the exit end of steam air heater, the 3rd magnetic valve that bypass duct is connected, the signal output terminal of controller is connected with the signal receiving end of the 3rd magnetic valve.
Low-level (stack-gas) economizer of the present invention associating steam air heater cyclic utilization system, further, the water-in and water-out end of described topping-up pump topping-up pump for subsequent use in parallel.
Low-level (stack-gas) economizer of the present invention associating steam air heater cyclic utilization system, employing cold water circulates, combine steam air heater recycle by low-level (stack-gas) economizer, reach the object reducing funnel temperature, the cold wind of air preheater is heated simultaneously, prevent its low temperature corrosion, present configuration is simple, and save energy, reduces cost, regulate, by moisturizing magnetic valve, the 4th magnetic valve, the water yield entering low-level (stack-gas) economizer, reach the object of control outlet cigarette temperature.
Below in conjunction with accompanying drawing, the low-level (stack-gas) economizer associating steam air heater cyclic utilization system of the present invention is described further.
Accompanying drawing explanation
Fig. 1 is the structural representation of low-level (stack-gas) economizer of the present invention associating steam air heater cyclic utilization system.
Embodiment
As shown in Figure 1, low-level (stack-gas) economizer of the present invention associating steam air heater cyclic utilization system comprises low adding system 1, low-level (stack-gas) economizer 2, steam air heater 3, controller, low adding system 1 is connected with the first water-in 21 of low-level (stack-gas) economizer 2 through suction culvert 11, and the first water outlet 22 of low-level (stack-gas) economizer 2 is connected with low adding system 1 through water return pipeline 23. The first magnetic valve 24 is installed at first water-in 21 place of low-level (stack-gas) economizer 2, and suction culvert 11 is installed the first temperature sensor 12 and the first pressure transmitter 13, and water return pipeline 23 is installed the 2nd temperature sensor 25 and the 2nd pressure transmitter 26.
2nd water outlet 27 of low-level (stack-gas) economizer 2 is connected with topping-up pump 4 through the first pipeline 28, and the water outlet of topping-up pump 4 is connected with steam air heater 3 through the 2nd pipeline 41, and the water outlet of steam air heater 3 is connected with the 2nd water-in 29 of low-level (stack-gas) economizer 2 through the 3rd pipeline 31.
First pipeline 28 is installed three-temperature sensor 14 and the 3rd pressure transmitter 15, entering of topping-up pump 4, water side topping-up pump 42 for subsequent use in parallel, 2nd pipeline 41 is installed the 4th temperature sensor 43 and the 4th pressure transmitter 44, series connection the 2nd magnetic valve 45 on 2nd pipeline 41, bypass duct 46 in parallel between the entrance end of the 2nd magnetic valve 45 and the exit end of steam air heater 3, series connection the 3rd magnetic valve 47 on bypass duct 46, the exit end of steam air heater 3 installs the 5th temperature sensor 32 and the 5th pressure transmitter 33, the 4th magnetic valve 34 is installed at 2nd water-in 29 place of low-level (stack-gas) economizer 2. suction culvert 11 is connected with the 3rd pipeline 31 through water pipe 35, serial make-up water magnetic valve 36 on water pipe 35. at installed in front the 6th temperature sensor 37 of water pipe 35 and the 6th pressure transmitter 38 on 3rd pipeline 31.
The signal output terminal of the first to the 6th temperature sensor, the first to the 6th pressure transmitter is connected with the signal receiving end of controller respectively, the signal output terminal of controller respectively signal receiving end with topping-up pump 4, first to fourth magnetic valve, moisturizing magnetic valve 36 be connected.
The working process of low-level (stack-gas) economizer of the present invention associating steam air heater cyclic utilization system is:
Cold water is provided by low adding system 1, a cold water part is by low-level (stack-gas) economizer 2, fume afterheat is utilized to add hot water, it is for subsequent use that hot water is back to low adding system 1, another part enters low-level (stack-gas) economizer 2, the hot water of heating is connected to steam air heater 3, it is heated by the cold wind of air preheater, the recirculation of cold water of outlet, to low-level (stack-gas) economizer 2 recycle, reaches the object reducing funnel temperature, it is to increase air preheater entrance wind-warm syndrome with this, hot water circulation is utilized, to greatest extent fume afterheat is used, and by controller implementing monitoring temperature, make system meet the requirements of temperature.
Low-level (stack-gas) economizer of the present invention associating steam air heater cyclic utilization system compared with prior art, has following useful effect:
The present invention adopts cold water to circulate, steam air heater recycle is combined by low-level (stack-gas) economizer, reach the object reducing funnel temperature, the cold wind of air preheater is heated simultaneously, prevent its low temperature corrosion, present configuration is simple, save energy, reduce cost, by moisturizing magnetic valve, 4th magnetic valve regulates the water yield entering low-level (stack-gas) economizer, reach the object of control outlet cigarette temperature, the multistage temperature of system design, pressure transmitter carries out the monitoring of temperature and pressure, ensure system stable operation, for making whole system have enough power cycle, system design has topping-up pump and topping-up pump for subsequent use.
Above-described embodiment is only the preferred embodiment of the present invention be described; not the scope of the present invention is limited; under the prerequisite not departing from inventive design spirit; the various distortion that the technical scheme of the present invention is made by those of ordinary skill in the art and improvement, all should fall in the protection domain that claims of the present invention is determined.
Claims (4)
1. a low-level (stack-gas) economizer associating steam air heater cyclic utilization system, it is characterized in that: comprise low adding system, low-level (stack-gas) economizer, steam air heater, low adding system is connected with the first water-in of low-level (stack-gas) economizer through suction culvert, first water outlet of low-level (stack-gas) economizer is connected with low adding system through water return pipeline, the first magnetic valve is installed in first water inlet of low-level (stack-gas) economizer, 2nd water outlet of low-level (stack-gas) economizer is connected with topping-up pump through the first pipeline, the water outlet of topping-up pump is connected with steam air heater through the 2nd pipeline, the water outlet of steam air heater is connected with the 2nd water-in of low-level (stack-gas) economizer through the 3rd pipeline, the 4th magnetic valve is installed in 2nd water inlet of low-level (stack-gas) economizer, suction culvert is through water pipe and the 3rd pipeline connection, serial make-up water magnetic valve on water pipe.
2. low-level (stack-gas) economizer according to claim 1 associating steam air heater cyclic utilization system, it is characterized in that: also comprise controller, described suction culvert is installed the first temperature sensor and the first pressure transmitter, water return pipeline is installed the 2nd temperature sensor and the 2nd pressure transmitter, first pipeline is installed three-temperature sensor and the 3rd pressure transmitter, 2nd pipeline is installed the 4th temperature sensor and the 4th pressure transmitter, the exit end of steam air heater installs the 5th temperature sensor and the 5th pressure transmitter, at installed in front the 6th temperature sensor of water pipe and the 6th pressure transmitter on 3rd pipeline, series connection the 2nd magnetic valve on 2nd pipeline, first to the 6th temperature sensor, the signal output terminal of the first to the 6th pressure transmitter is connected with the signal receiving end of controller respectively, the signal output terminal of controller respectively with topping-up pump, first, 2nd, 4th magnetic valve, the signal receiving end of moisturizing magnetic valve connects.
3. low-level (stack-gas) economizer according to claim 2 associating steam air heater cyclic utilization system, it is characterized in that: bypass duct in parallel between the entrance end of described 2nd magnetic valve and the exit end of steam air heater, series connection the 3rd magnetic valve on bypass duct, the signal output terminal of controller is connected with the signal receiving end of the 3rd magnetic valve.
4. low-level (stack-gas) economizer according to claim 3 associating steam air heater cyclic utilization system, it is characterised in that: the water-in and water-out end of described topping-up pump topping-up pump for subsequent use in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610150598.1A CN105627289B (en) | 2016-03-16 | 2016-03-16 | Low-level (stack-gas) economizer combines steam air heater cyclic utilization system |
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| CN201610150598.1A CN105627289B (en) | 2016-03-16 | 2016-03-16 | Low-level (stack-gas) economizer combines steam air heater cyclic utilization system |
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| CN105627289A true CN105627289A (en) | 2016-06-01 |
| CN105627289B CN105627289B (en) | 2018-12-14 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107023819A (en) * | 2017-05-22 | 2017-08-08 | 山西中源科扬节能服务有限公司 | Low low-level (stack-gas) economizer Two-way Cycle heating system and Two-way Cycle heating means |
| CN107504477A (en) * | 2016-06-14 | 2017-12-22 | 天津华赛尔传热设备有限公司 | A kind of pressure regulation heat-exchange system of low-level (stack-gas) economizer |
| CN108800598A (en) * | 2018-06-22 | 2018-11-13 | 中国电建集团都江电力设备有限公司 | Flue gas heat recovery combines the wide load adjustment method of the double bypasses of steam air heater |
| CN109442379A (en) * | 2018-10-09 | 2019-03-08 | 中国神华能源股份有限公司 | Flue gas waste heat recovery system and boiler system |
| CN114459016A (en) * | 2022-02-25 | 2022-05-10 | 西安西热锅炉环保工程有限公司 | Low-temperature economizer combined air heater all-condition adjusting system and method |
| CN114526495A (en) * | 2022-02-25 | 2022-05-24 | 西安西热锅炉环保工程有限公司 | Variable heat source air heater system and control method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010038385A (en) * | 2008-07-31 | 2010-02-18 | Miura Co Ltd | Water supply system for boiler |
| CN202109463U (en) * | 2011-06-20 | 2012-01-11 | 中国华能集团清洁能源技术研究院有限公司 | Combined smoke waste heat comprehensive utilization system |
| CN204574092U (en) * | 2014-12-05 | 2015-08-19 | 浙江省电力设计院 | Boiler tail flue gas waste heat complicated utilization system |
| CN105351915A (en) * | 2015-11-10 | 2016-02-24 | 上海羲蓝节能环保科技有限公司 | Double-circulation device and method for recovering and heating furnace-entering air through waste heat of boiler discharged smoke |
| CN205424887U (en) * | 2016-03-16 | 2016-08-03 | 天津爱尔普科技发展有限公司 | Fan heater cyclic utilization system is united to low -level (stack -gas) economizer |
-
2016
- 2016-03-16 CN CN201610150598.1A patent/CN105627289B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010038385A (en) * | 2008-07-31 | 2010-02-18 | Miura Co Ltd | Water supply system for boiler |
| CN202109463U (en) * | 2011-06-20 | 2012-01-11 | 中国华能集团清洁能源技术研究院有限公司 | Combined smoke waste heat comprehensive utilization system |
| CN204574092U (en) * | 2014-12-05 | 2015-08-19 | 浙江省电力设计院 | Boiler tail flue gas waste heat complicated utilization system |
| CN105351915A (en) * | 2015-11-10 | 2016-02-24 | 上海羲蓝节能环保科技有限公司 | Double-circulation device and method for recovering and heating furnace-entering air through waste heat of boiler discharged smoke |
| CN205424887U (en) * | 2016-03-16 | 2016-08-03 | 天津爱尔普科技发展有限公司 | Fan heater cyclic utilization system is united to low -level (stack -gas) economizer |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107504477A (en) * | 2016-06-14 | 2017-12-22 | 天津华赛尔传热设备有限公司 | A kind of pressure regulation heat-exchange system of low-level (stack-gas) economizer |
| CN107023819A (en) * | 2017-05-22 | 2017-08-08 | 山西中源科扬节能服务有限公司 | Low low-level (stack-gas) economizer Two-way Cycle heating system and Two-way Cycle heating means |
| CN108800598A (en) * | 2018-06-22 | 2018-11-13 | 中国电建集团都江电力设备有限公司 | Flue gas heat recovery combines the wide load adjustment method of the double bypasses of steam air heater |
| CN108800598B (en) * | 2018-06-22 | 2020-08-18 | 中国电建集团都江电力设备有限公司 | Flue gas waste heat recycling combined air heater double-bypass wide-load adjusting method |
| CN109442379A (en) * | 2018-10-09 | 2019-03-08 | 中国神华能源股份有限公司 | Flue gas waste heat recovery system and boiler system |
| CN114459016A (en) * | 2022-02-25 | 2022-05-10 | 西安西热锅炉环保工程有限公司 | Low-temperature economizer combined air heater all-condition adjusting system and method |
| CN114526495A (en) * | 2022-02-25 | 2022-05-24 | 西安西热锅炉环保工程有限公司 | Variable heat source air heater system and control method thereof |
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| Publication number | Publication date |
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| CN105627289B (en) | 2018-12-14 |
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Granted publication date: 20181214 Termination date: 20190316 |