CN203364159U - Air preheater for heat exchange of flowing layer - Google Patents
Air preheater for heat exchange of flowing layer Download PDFInfo
- Publication number
- CN203364159U CN203364159U CN2013203149254U CN201320314925U CN203364159U CN 203364159 U CN203364159 U CN 203364159U CN 2013203149254 U CN2013203149254 U CN 2013203149254U CN 201320314925 U CN201320314925 U CN 201320314925U CN 203364159 U CN203364159 U CN 203364159U
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- CN
- China
- Prior art keywords
- heat exchange
- heat exchanger
- exchanger tube
- exchange pipe
- tank
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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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 provides an air preheater for heat exchange of a flowing layer. The air preheater for heat exchange of the flowing layer comprises a heat exchange pipe. The air inlet end of the heat exchange pipe is horizontally provided with a water tank used for storing water. The top end of the heat exchange pipe penetrates through a through hole formed in the bottom end of the water tank and is located above the liquid level of the water tank. A plurality of water inlets are formed in the side wall of the heat exchange pipe in the water tank. High-temperature smoke heat entering the heat exchange pipe is fast transmitted to a flowing water film on the inner wall of the heat exchange pipe, the flowing water film then transmits the heat to the outer wall of the heat exchange pipe, and when entered cold air flows by the outer wall of the heat exchange pipe, the cold air is heated and then sent to a boiler, and therefore the purpose of heating the air is achieved. The heat exchange efficiency of the whole air preheater is improved, accumulation of dust on the inner wall of the heat exchange pipe is avoided, and therefore the heat exchange pipe is protected against abrasion. The service life of the heat exchange pipe and the air preheater is prolonged.
Description
Technical field
The utility model relates to a kind of air preheater, relates in particular to a kind of air preheater that utilizes fluidized bed to carry out heat exchange.
Background technology
Air preheater is multiplex in coal-fired power station boiler, is exactly that the flue gas fin inner by it in boiler back end ductwork will enter air preheat before the boiler heating surface to uniform temperature.For improving the heat exchange performance of boiler, reduce energy consumption.
The air preheater of the use such as steam boiler, heat conducting oil boiler adopts pipe heat exchanger mostly at present, be that high-temperature flue gas is flowed through from heat exchanger tube inside, and air is to pass through from the heat exchanger tube outside, by temperature difference difference, conducted heat, flue gas transfers heat to air, makes the air entered in boiler carry out preheating.Because pipe heat exchanger in use weares and teares larger; Because dust in flue gas causes dust stratification serious greatly, cause heat exchange efficiency not high in addition.Service time, can there be the dew point corrosion phenomenon in long heat exchanger tube, caused its service life shorter, the use cost of increase.
The utility model content
The utility model will solve above-mentioned deficiency exactly, and a kind of air preheater that utilizes the fluidized bed heat exchange is provided.
In order to achieve the above object, the utility model provides a kind of air preheater of fluidized bed heat exchange, comprise heat exchanger tube, the inlet end of described heat exchanger tube laterally is provided with the tank for water storage, and described heat exchanger tube top is positioned at the top of tank liquid level through being located at the perforation of tank bottom; The heat exchanger tube sidewall that is positioned at tank inside is provided with a plurality of inlet openings.
Further, in order to make the water entered in heat exchanger tube by inlet opening, at the heat exchanger tube inwall, form equally distributed moisture film, the top of described heat exchanger tube is arranged with a minute water cap.
Further, for fear of the air that enters heat exchange, affected by aqueous vapor, described tank is the frame type, and the top of described heat exchanger tube is positioned at above tank through tank, and described heat exchanger tube and tank junction are for being tightly connected.
Further, described minute water cap is the top that N-shaped is fastened in heat exchanger tube, and its length that is positioned at a side of heat exchanger tube inwall is not less than the height of described tank.
Tank inside passes into recirculated water and forms the flowing water layer, water in tank enters the inner tube of heat exchanger tube by the inlet opening of being located at heat exchanger tube top, and minute water cap by being set in the heat exchanger tube top is the inwall that enters water in heat exchanger tube and be evenly distributed on heat exchanger tube, water forms the mobile moisture film of one deck on the inwall of heat exchanger tube.In the time of in high-temperature flue gas enters heat exchanger tube, its heat passes to rapidly the mobile moisture film of heat exchanger tube inwall, moisture film is delivered to heat the outer wall of heat exchanger tube again, and the cold air entered is sent into boiler after being heated while flowing through the heat exchanger tube outer wall, reaches the purpose that adds hot-air.
The beneficial effects of the utility model are embodied in:
1, the coefficient of heat transfer due to the cigarette G&W is larger, and the coefficient of heat transfer of water and carbon steel is larger, so the whole equipment heat exchange efficiency of the air preheater of the present utility model efficiency that direct and carbon steel carries out heat exchange than traditional tube-type air preheater flue gas improves tens times.
2, flow dust that moisture film will enter heat exchanger tube inside is flushed to its bottom and is collected, finally by circulating water take out of precipitated, neutralisation treatment, then also can squeeze in tank and use as recirculated water by kinetic pump.
3, the utility model forms the circulating water layer because the top at heat exchanger tube is provided with tank, has fundamentally solved the wearing and tearing of heat exchanger tube and the problem of dust stratification, has solved its dew point corrosion problem simultaneously, has increased the service life of heat exchanger tube and air preheater.
4, divide the water cap because the heat exchanger tube top is arranged with N-shaped, its side that is positioned at heat exchanger tube inside shelters from inlet opening, makes to form the mobile moisture film of equally distributed one deck into water at the inwall of heat exchanger tube, makes the transmission of heat more even.
The accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Fig. 1 is the utility model structural representation;
Fig. 2 is the enlarged diagram that single heat exchanger tube top is provided with tank.
Fig. 3 is the top view of tank in the utility model.
In figure: the 1-heat exchanger tube, the 2-tank, 3-divides the water cap, 4-inlet opening, 5-perforation.
The specific embodiment
As shown in Figure 1, 2, a kind of air preheater of fluidized bed heat exchange, comprise heat exchanger tube 1, the inlet end of described heat exchanger tube 1 laterally is provided with the tank 2 for water storage, tank 2 is the frame type, the top of heat exchanger tube 1 is positioned at tank 2 tops through tank 2, and both junctions are for being tightly connected, and high-temperature flue gas carries out the inside of heat exchanger tube and carries out heat exchange from the top of heat exchanger tube 2; The heat exchanger tube sidewall that is positioned at tank 2 inside is provided with a plurality of inlet openings 4, and the top of heat exchanger tube 1 is arranged with N-shaped and divides water cap 3, and its length that is positioned at a side of heat exchanger tube 1 inwall is not less than the height of tank 2.
The inner tube that recirculated water in tank 2 enters heat exchanger tube 1 by the inlet opening 4 of being located at heat exchanger tube 1 upper portion side wall, and by minute water cap 3 that is set in the heat exchanger tube top, the water entered in heat exchanger tube 1 is evenly distributed on to the mobile moisture film of its inwall formation one deck.
The top view of tank as shown in Figure 3, tank 2 is the frame type, which is provided with the perforation 5 matched with heat exchanger tube, and 5 the quantity of boring a hole equates with the quantity of heat exchanger tube, its joint is for being tightly connected, under the current in anti-water stopping trough 2 and reduce the temperature of air or increase the humidity of air.
The large characteristics by the heat transfer coefficient between air-water-steel, to enter high-temperature flue gas heat in heat exchanger tube and pass to rapidly the mobile moisture film of heat exchanger tube inwall, mobile moisture film is delivered to heat the outer wall of heat exchanger tube again, and the cold air entered is sent into boiler after being heated while flowing through the heat exchanger tube outer wall, reaches the purpose that adds hot-air.Improve the whole equipment heat exchange efficiency of air preheater, and avoided dust to pile up and the wearing and tearing heat exchanger tube at the heat exchanger tube inwall, increased the service life of heat exchanger tube and air preheater.
Above embodiment is not limited only to protection domain of the present utility model, all based on basic thought of the present utility model, modify or change all belong to protection domain of the present utility model.
Claims (4)
1. the air preheater of a fluidized bed heat exchange, comprise heat exchanger tube, it is characterized in that: the inlet end of described heat exchanger tube laterally is provided with the tank for water storage, and described heat exchanger tube top is positioned at the top of tank liquid level through being located at the perforation of tank bottom; The heat exchanger tube sidewall that is positioned at tank inside is provided with a plurality of inlet openings.
2. the air preheater of fluidized bed heat exchange according to claim 1, it is characterized in that: the top of described heat exchanger tube is arranged with a minute water cap.
3. the air preheater of fluidized bed heat exchange according to claim 1, it is characterized in that: described tank is the frame type, and the top of described heat exchanger tube is positioned at above tank through tank, and described heat exchanger tube and tank junction are for being tightly connected.
4. the air preheater of fluidized bed heat exchange according to claim 2, it is characterized in that: described minute water cap is the top that N-shaped is fastened in heat exchanger tube, its length that is positioned at a side of heat exchanger tube inwall is not less than the height of described tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203149254U CN203364159U (en) | 2013-06-04 | 2013-06-04 | Air preheater for heat exchange of flowing layer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203149254U CN203364159U (en) | 2013-06-04 | 2013-06-04 | Air preheater for heat exchange of flowing layer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203364159U true CN203364159U (en) | 2013-12-25 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013203149254U Expired - Lifetime CN203364159U (en) | 2013-06-04 | 2013-06-04 | Air preheater for heat exchange of flowing layer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203364159U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104879773A (en) * | 2015-05-27 | 2015-09-02 | 安徽瀚洋节能科技有限公司 | Air preheater for heat exchange of flow layer |
| CN105114975A (en) * | 2014-12-03 | 2015-12-02 | 芜湖三峰节能设备有限公司 | Air preheater for heat exchange of flowing layer |
-
2013
- 2013-06-04 CN CN2013203149254U patent/CN203364159U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105114975A (en) * | 2014-12-03 | 2015-12-02 | 芜湖三峰节能设备有限公司 | Air preheater for heat exchange of flowing layer |
| CN104879773A (en) * | 2015-05-27 | 2015-09-02 | 安徽瀚洋节能科技有限公司 | Air preheater for heat exchange of flow layer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: 230031 D monomer 2D6 room, workshop D-6D-11, science and Technology Industrial Park, 168 camphor Road, hi tech Zone, Anhui, Hefei Patentee after: ANHUI RESOURCE SAVING & ENVIRONMENTAL TECHNOLOGY Co.,Ltd. Address before: 230031 building D6, science and Technology Industrial Park, 169 camphor Road, hi tech Zone, Anhui, Hefei Patentee before: ANHUI SECTION SOURCE OF ENERGY-SAVING TECHNOLOGY Co.,Ltd. |
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| CX01 | Expiry of patent term |
Granted publication date: 20131225 |
|
| CX01 | Expiry of patent term |