CN209431447U - A kind of water-borne formula steam air heater of two-stage combined heat - Google Patents
A kind of water-borne formula steam air heater of two-stage combined heat Download PDFInfo
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- CN209431447U CN209431447U CN201822047478.6U CN201822047478U CN209431447U CN 209431447 U CN209431447 U CN 209431447U CN 201822047478 U CN201822047478 U CN 201822047478U CN 209431447 U CN209431447 U CN 209431447U
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- air heater
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- steam 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
- Y02E20/34—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 boiler exhaust gas field of waste heat utilization, particularly disclose a kind of water-borne formula steam air heater of two-stage combined heat.The water-borne formula steam air heater of the two-stage combined heat, including air preheater, deduster, low-temperature flue gas heat exchanger, it is characterized by: being disposed with water-borne formula steam air heater on the supply air duct of the connection air preheater, the heat exchanger outlet conduit of low-temperature flue gas heat exchanger connects the water inlet of water-borne formula steam air heater, the condensed water in high temperature water intake conduit and low-temperature condensate water intake conduit of the heat exchanger water supply line parallel communication condensate system of low-temperature flue gas heat exchanger；The steam air heater water return pipeline of water-borne formula steam air heater is connected to main condensate pipeline.The utility model structure is simple, and operational safety is stablized, and is superimposed fume afterheat using the condensed water of low-lying level, significantly heating boiler is blown, the taste of smoke discharging residual heat is improved, while with the lower steam extraction of energy level instead of the higher steam extraction of energy level, it is comprehensive to promote low-lying level using energy source energy level.
Description
(1) technical field
The utility model relates to boiler exhaust gas field of waste heat utilization, in particular to a kind of water-borne formula of two-stage combined heat is warm
Wind device.
(2) background technique
Fired power generating unit influences asking for operational safety to solve rotary regenerative air preheater cold end dust stratification, blocking, corrosion etc.
Topic, need to usually arrange steam warming machine or fume afterheat steam air heater, utilize the air-supply of steam or fume afterheat heating boiler.But by
In the energy level of steam extraction is higher or the grade of fume afterheat is lower, overall economic efficiency is lower.
(3) summary of the invention
The utility model in order to make up for the deficiencies of the prior art, provide a kind of structure is simple, Benefit of Unit is high, operation peace
The water-borne formula steam air heater of full two-stage combined heat.
The utility model is achieved by the following technical solution:
A kind of water-borne formula steam air heater of two-stage combined heat, including in boiler back end ductwork along flow of flue gas direction successively
Air preheater, deduster, the low-temperature flue gas heat exchanger of arrangement, it is characterised in that: the air-supply wind of the connection air preheater
Water-borne formula steam air heater is disposed on road, the heat exchanger outlet conduit of low-temperature flue gas heat exchanger connects the water inlet of water-borne formula steam air heater
Mouthful, the condensed water in high temperature water intake conduit and low temperature of the heat exchanger water supply line parallel communication condensate system of low-temperature flue gas heat exchanger
Condensed water water intake conduit；The steam air heater water return pipeline of water-borne formula steam air heater is connected to main condensate pipeline.
The utility model arranges low-temperature flue gas heat exchanger in boiler back end ductwork, arranges that water-borne formula is warm in supply air duct
Wind device is blown using low-temperature condensate and fume afterheat combined heat boiler, the low grade thermal energy of deep exploitation, while will be low-grade
Thermal energy is converted to high-grade thermal energy, improves the operational safety of Benefit of Unit and air preheater.
The more excellent technical solution of the utility model are as follows:
Booster is installed on the heat exchanger water supply line, condensed water is drawn from condensed water water intake conduit, it is boosted
It is pumped into low-temperature flue gas heat exchanger, water-borne formula steam air heater heat release is entered after heat absorption, return water is back to main condensate pipeline.
Cryogenic temperature condensation water regulating valve is installed on the low-temperature condensate water intake conduit, to the water flow in water intake conduit into
Row adjusts control.
Dry point of the tie point of the steam air heater water return pipeline and main condensate water system in low-temperature condensate water intake conduit
Before.
The low-temperature condensate water intake conduit is connected to main condensate pipeline, condensed water in high temperature water intake conduit and low-pressure heating
The outlet pipe of device is connected to.
In the utility model, heat exchanger is the low-temperature condensate and condensed water in high temperature for being derived from condensate system using medium
The suitable mixing water of mixed temperature；70 DEG C or so of the final stage low-pressure heater condensed water drawn by condensate system, warp
After booster enters the heat absorption of low-temperature flue gas heat exchanger, into water-borne formula steam air heater heat release, 60 DEG C or so of return water is returned after heat release
The low addition mouth condensing water conduit of final stage.
The utility model is blown using low-temperature condensate and fume afterheat combined heat boiler, sufficiently raising pre-heater inlet
Wind-warm syndrome, air preheater outlet hot blast temperature can also correspondingly increase, so that boiler efficiency be made to improve, combustion efficiency improves.Air preheater goes out
The raising of mouth flue-gas temperature, improves the synthesis tube wall temperature of air preheater cold end, mitigates the stifled ash of air preheater cold-end air, corrosion is asked
Topic, while improving the flue gas utilization grade of low-temperature flue gas heat exchanger.
The utility model structure is simple, and operational safety is stablized, and is superimposed fume afterheat using the condensed water of low-lying level, significantly
The air-supply of ground heating boiler, improves the taste of smoke discharging residual heat, while with the lower steam extraction of energy level instead of the higher steam extraction of energy level, comprehensive
It closes and promotes low-lying level using energy source energy level.
(4) Detailed description of the invention
The utility model will be further described below with reference to the accompanying drawings.
Fig. 1 is the structural schematic diagram of the utility model.
In figure, 1 air preheater, 2 supply air ducts, 3 water-borne formula steam air heaters, 4 dedusters, 5 low-temperature flue gas heat exchangers, 6 liters
Press pump, 7 heat exchanger water supply lines, 8 heat exchanger outlet conduits, 9 steam air heater water return pipelines, 10 condensed water in high temperature water intake conduits, 11
Low-temperature condensate water intake conduit, 12 cryogenic temperature condensation water regulating valves.
(5) specific embodiment
Attached drawing is a kind of specific embodiment of the utility model.The embodiment includes in boiler back end ductwork along flue gas stream
Air preheater 1 that dynamic direction is sequentially arranged, deduster 4, low-temperature flue gas heat exchanger 5, the air-supply of the connection air preheater 1
Water-borne formula steam air heater 3 is disposed on air duct 2, the heat exchanger outlet conduit 8 of low-temperature flue gas heat exchanger 5 connects water-borne formula steam air heater 3
Water inlet, the condensed water in high temperature intake pipe of the 7 parallel communication condensate system of heat exchanger water supply line of low-temperature flue gas heat exchanger 5
Road 10 and low-temperature condensate water intake conduit 11；The steam air heater water return pipeline 9 of water-borne formula steam air heater 3 is connected to main condensate pipeline.
Booster 6 is installed on the heat exchanger water supply line 7；It is equipped on the low-temperature condensate water intake conduit 11 low
Temperature condensation water regulating valve 12；The tie point of the steam air heater water return pipeline 9 and main condensate water system is in low-temperature condensate intake pipe
Before the dry point in road 11；The low-temperature condensate water intake conduit 11 is connected to main condensate pipeline, condensed water in high temperature water intake conduit
10 are connected to the outlet pipe of low-pressure heater.
In the utility model, condensed by the high temperature that the condensed water in high temperature water intake conduit 10 that No. 7 low-pressure heaters export is drawn
Water is mixed with the low-temperature condensate that the low-temperature condensate water intake conduit 11 by No. 8 low-pressure heater imports is drawn, mixing temperature by
Cryogenic temperature condensation water regulating valve 12 controls, and water temperature is not less than 70 DEG C.The boosted pump 6 of mixing water, is entered by heat exchanger water supply line 7
The low-temperature flue gas heat exchanger 5 being arranged in 4 exhaust pass of deduster enters water through heat exchanger outlet conduit 8 after condensed water heat absorption
Matchmaker's formula steam air heater 3, heating boiler cold wind is to 85 DEG C, about 60 DEG C of return water temperature after heat release, enters No. 8 through steam air heater water return pipeline 9
Low addition mouth completes circulation loop.
Low-temperature flue gas heat exchanger 5 and water-borne formula steam air heater 3 are modular arrangement, and inlet and outlet setting valve and pressure are surveyed
Point, in heat exchanger tube leakage can leakage detection and cutting in time, it is convenient to overhaul.
Claims (5)
1. a kind of water-borne formula steam air heater of two-stage combined heat, including along flow of flue gas direction successively cloth in boiler back end ductwork
Air preheater (1), deduster (4), the low-temperature flue gas heat exchanger (5) set, it is characterised in that: connect the air preheater
(1) water-borne formula steam air heater (3), the heat exchanger outlet conduit (8) of low-temperature flue gas heat exchanger (5) are disposed on supply air duct (2)
Connect the water inlet of water-borne formula steam air heater (3), heat exchanger water supply line (7) the parallel communication condensation of low-temperature flue gas heat exchanger (5)
The condensed water in high temperature water intake conduit (10) and low-temperature condensate water intake conduit (11) of water system；The warm wind of water-borne formula steam air heater (3)
Device water return pipeline (9) is connected to main condensate pipeline.
2. the water-borne formula steam air heater of two-stage combined heat according to claim 1, it is characterised in that: the heat exchanger supplies water
Booster (6) are installed on pipeline (7).
3. the water-borne formula steam air heater of two-stage combined heat according to claim 1, it is characterised in that: the low-temperature condensate
Cryogenic temperature condensation water regulating valve (12) are installed on water intake conduit (11).
4. the water-borne formula steam air heater of two-stage combined heat according to claim 1, it is characterised in that: the steam air heater return water
The tie point of pipeline (9) and main condensate water system is before the dry point of low-temperature condensate water intake conduit (11).
5. the water-borne formula steam air heater of two-stage combined heat according to claim 1, it is characterised in that: the low-temperature condensate
Water intake conduit (11) is connected to main condensate pipeline, and the outlet pipe of condensed water in high temperature water intake conduit (10) and low-pressure heater connects
It is logical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822047478.6U CN209431447U (en) | 2018-12-07 | 2018-12-07 | A kind of water-borne formula steam air heater of two-stage combined heat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822047478.6U CN209431447U (en) | 2018-12-07 | 2018-12-07 | A kind of water-borne formula steam air heater of two-stage combined heat |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209431447U true CN209431447U (en) | 2019-09-24 |
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ID=67970745
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822047478.6U Active CN209431447U (en) | 2018-12-07 | 2018-12-07 | A kind of water-borne formula steam air heater of two-stage combined heat |
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| Country | Link |
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| CN (1) | CN209431447U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109506246A (en) * | 2018-12-07 | 2019-03-22 | 华电新乡发电有限公司 | A kind of water-borne formula steam air heater of two-stage combined heat |
-
2018
- 2018-12-07 CN CN201822047478.6U patent/CN209431447U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109506246A (en) * | 2018-12-07 | 2019-03-22 | 华电新乡发电有限公司 | A kind of water-borne formula steam air heater of two-stage combined heat |
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