CN206803116U - Boiler circulatory system - Google Patents
Boiler circulatory system Download PDFInfo
- Publication number
- CN206803116U CN206803116U CN201720522853.0U CN201720522853U CN206803116U CN 206803116 U CN206803116 U CN 206803116U CN 201720522853 U CN201720522853 U CN 201720522853U CN 206803116 U CN206803116 U CN 206803116U
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- heat exchange
- boiler
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- exchange unit
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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
Abstract
The utility model discloses a kind of boiler circulatory system, gas-distributing cylinder is connected by pipeline with oxygen-eliminating device, the arrival end of air preheater aquaporin connects with oxygen-eliminating device, the port of export connects with heat exchange unit, and the arrival end of air preheater air duct connects with unit of supplying gas, the port of export connects with burner；The arrival end of heat exchange unit exhaust gases passes connects with boiler back end ductwork, the port of export connects with external environment, and the arrival end of heat exchange unit aquaporin connects with air preheater, the port of export connects with boiler.On the one hand, heating is delivered to burner into hot-air after normal temperature air and 105 DEG C of high-temperature water carry out heat exchange, improves the thermal efficiency of boiler；On the other hand, heat exchange is carried out by 80 DEG C or so of middle warm water and high-temperature flue gas, mean temperature difference of the two media in heat exchange unit heating surface is big, when so high-temperature flue gas carries out heat exchange with middle warm water in heat exchange unit, the heat recovery rate of high-temperature flue gas is considerably increased, further improves the thermal efficiency of boiler.
Description
Technical field
Field of boilers is the utility model is related to, specially a kind of boiler circulatory system.
Background technology
The coal type fuel of heating boiler has been altered in steps as oil, gas type fuel.In oil, gas type fuel combustion, boiler
The flue-gas temperature discharged is up to 230 DEG C, and high-temperature flue gas is directly discharged to external environment, causes boiler heat to waste.Existing skill
In art, in order to reclaim the heat in high-temperature flue gas, heat exchanger is set in boiler flue afterbody, will be soft after low-level deaerator deoxygenation
Change water to be exchanged heat by heat exchanger and high-temperature flue gas, the softened water after heat exchange is delivered in boiler, to improve the thermal effect of boiler
Rate.But the softening coolant-temperature gage after low-level deaerator deoxygenation is up to 105 DEG C, softened water is flat in heating surface with high-temperature flue gas
Mean temperature difference is small, causes the heat recovery rate of high-temperature flue gas low, it is difficult to improve the thermal efficiency of boiler.
Utility model content
The purpose of this utility model is to provide a kind of boiler circulatory system, greatly improves the thermal efficiency of boiler.
To achieve these goals, the technical scheme used for：A kind of boiler circulatory system, pliable cell are soft by normal-temperature water
It is sent into after change in oxygen-eliminating device, gas-distributing cylinder is connected by pipeline with oxygen-eliminating device, the arrival end and oxygen-eliminating device of air preheater aquaporin
Connection, the port of export connect with heat exchange unit, and the arrival end of air preheater air duct connects with unit of supplying gas, the port of export and combustion
Burner connects；
The arrival end of heat exchange unit exhaust gases passes connects with boiler back end ductwork, the port of export connects with external environment, heat exchange
The arrival end of unit aquaporin connects with air preheater, the port of export connects with boiler.
Compared with prior art, technique effect of the present utility model is：105 DEG C of high-temperature water after oxygen-eliminating device deoxygenation with often
Warm air carries out heat exchange by air preheater, the middle warm water for making 105 DEG C of high temperature coolant-temperature gages be reduced to 80 DEG C or so, then by 80
DEG C or so middle warm water and high-temperature flue gas heat exchange is carried out by heat exchange unit, on the one hand, normal temperature air enters with 105 DEG C of high-temperature water
Heating is delivered to burner into hot-air after row heat exchange, improves the thermal efficiency of boiler；On the other hand, 80 DEG C or so are passed through
Middle warm water carries out heat exchange with high-temperature flue gas, and mean temperature difference of the two media in heat exchange unit heating surface is big, such high temperature cigarette
When gas carries out heat exchange with middle warm water in heat exchange unit, the heat recovery rate of high-temperature flue gas is considerably increased, is further improved
The thermal efficiency of boiler.
Brief description of the drawings
Fig. 1 is the schematic diagram of the utility model boiler circulatory system；
Fig. 2 is the overall schematic of the utility model boiler circulatory system.
Embodiment
The utility model is described in further detail with reference to Fig. 1 and 2.
A kind of boiler circulatory system, pliable cell 70 are sent into oxygen-eliminating device 40 after normal-temperature water is softened, and gas-distributing cylinder 60 passes through
Pipeline connects with oxygen-eliminating device 40, and the arrival end of the aquaporin of air preheater 20 connects with oxygen-eliminating device 40, the port of export and heat exchange unit
30 connections, the arrival end of the air duct of air preheater 20 connects with unit 50 of supplying gas, the port of export connects with burner；
The arrival end of the exhaust gases passes of heat exchange unit 30 connects with the back-end ductwork of boiler 10, the port of export connects with external environment,
The arrival end of the aquaporin of heat exchange unit 30 connects with air preheater 20, the port of export connects with boiler 10.
In such scheme, first, the normal-temperature water after pliable cell 70 is softened is sent into oxygen-eliminating device 40, and gas-distributing cylinder 60 conveys
Steam is heated to 105 DEG C of deoxygenations to normal-temperature water；Then, 105 DEG C of high-temperature water are sent into air preheater 20 and normal temperature air
Heat exchange is carried out, normal temperature air heating is sent into the burner on boiler 10 into hot-air, meanwhile, 105 DEG C of high-temperature water are cooled to
80 DEG C or so of middle warm water；Finally, warm water is sent into heat exchange unit 30 and 220 DEG C of high-temperature flue gas progress heat exchange in 80 DEG C, and 80
Warm water heating is sent into boiler 10 in DEG C, 220 DEG C of cooling high-temperature fume to 100 DEG C or so discharges, on the one hand, normal temperature air with
Heating is delivered to burner into hot-air after 105 DEG C of high-temperature water carry out heat exchange, improves the thermal efficiency of boiler；On the other hand,
Heat exchange, mean temperature difference of the two media in heat exchange unit heating surface are carried out by 80 DEG C or so of middle warm water and high-temperature flue gas
Greatly, when such high-temperature flue gas carries out heat exchange with middle warm water in heat exchange unit, the heat recovery of high-temperature flue gas is considerably increased
Rate, further improve the thermal efficiency of boiler.Condensed water caused by wherein 100 DEG C or so of high-temperature flue gas is few, is ensureing flue gas
While heat recovery rate, harmful substances from flue gases is reduced as far as possible and is dissolved in formation acid solution exchange hot cell 30 in condensed water
Corrosion is produced, extends the service life of heat exchange unit 30.
Medicine-adding bin, anti-cavitation pump and boiler have been sequentially arranged on the oxygen-eliminating device 40 to the pipeline between air preheater 20
Feed pump.Medicine-adding bin is set further to reduce salt ion in hot mastication water, fouling on the tube wall of anti-antipriming pipe, it is ensured that whole
Boiler circulatory system efficient stable is run.Wherein oxygen-eliminating device 40 can be low level, heating power deaerator.
As the specific arrangement of heat exchange unit 30, the heat exchange unit 30 is finned heat exchanger.Fin type heat exchange
Device arrangement is simple and convenient.
Claims (3)
1. a kind of boiler circulatory system, pliable cell (70) is sent into oxygen-eliminating device (40) after normal-temperature water is softened, gas-distributing cylinder (60)
Connected by pipeline with oxygen-eliminating device (40), it is characterised in that：The arrival end of air preheater (20) aquaporin and oxygen-eliminating device (40)
Connection, the port of export connect with heat exchange unit (30), and the arrival end of air preheater (20) air duct and unit (50) of supplying gas are even
The logical, port of export connects with burner；
The arrival end of heat exchange unit (30) exhaust gases passes connects with boiler (10) back-end ductwork, the port of export connects with external environment,
The arrival end of heat exchange unit (30) aquaporin connects with air preheater (20), the port of export connects with boiler (10).
2. boiler circulatory system according to claim 1, it is characterised in that：The oxygen-eliminating device (40) is to air preheater
(20) medicine-adding bin, anti-cavitation pump and boiler feed pump have been sequentially arranged on the pipeline between.
3. boiler circulatory system according to claim 1, it is characterised in that：The heat exchange unit (30) is fin type heat exchange
Device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720522853.0U CN206803116U (en) | 2017-05-11 | 2017-05-11 | Boiler circulatory system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720522853.0U CN206803116U (en) | 2017-05-11 | 2017-05-11 | Boiler circulatory system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206803116U true CN206803116U (en) | 2017-12-26 |
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ID=60740587
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720522853.0U Active CN206803116U (en) | 2017-05-11 | 2017-05-11 | Boiler circulatory system |
Country Status (1)
| Country | Link |
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| CN (1) | CN206803116U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107036073A (en) * | 2017-05-11 | 2017-08-11 | 博瑞特热能设备股份有限公司 | Boiler circulatory system |
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2017
- 2017-05-11 CN CN201720522853.0U patent/CN206803116U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107036073A (en) * | 2017-05-11 | 2017-08-11 | 博瑞特热能设备股份有限公司 | Boiler circulatory system |
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