CN204421053U - Efficient heat transfer anti-low-temperature corrosion Horizontal air preheater - Google Patents
Efficient heat transfer anti-low-temperature corrosion Horizontal air preheater Download PDFInfo
- Publication number
- CN204421053U CN204421053U CN201520045678.1U CN201520045678U CN204421053U CN 204421053 U CN204421053 U CN 204421053U CN 201520045678 U CN201520045678 U CN 201520045678U CN 204421053 U CN204421053 U CN 204421053U
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- China
- Prior art keywords
- heat transfer
- aluminium fin
- efficient heat
- air preheater
- exchanger tube
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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
A kind of efficient heat transfer anti-low-temperature corrosion Horizontal air preheater, comprise housing, in housing, erection upper, lower tube plate, is characterized in that, upper and lower tube sheet is installed efficient heat transfer aluminium fin heat exchanger tube, air is by efficient heat transfer aluminium fin heat exchanger tube, flue gas passes through outside efficient heat transfer aluminium fin heat exchanger tube, after air and flue gas pass through the augmentation of heat transfer of aluminium fin, and atmosphere temperature rising, flue gas cool-down, then enters next stage equipment by respective outlet.By heat exchange and the antisepsis of efficient heat transfer aluminium fin heat exchanger tube, greatly can improve air preheater service life, the heat-transfer effect of strengthening air preheater, also reduces air preheater heat exchange area, alleviates air preheater weight.
Description
Technical field
The utility model relates to a kind of air preheater, particularly relates to a kind of anti-low-temperature corrosion Horizontal air preheater.
Background technology
Current heat energy industry fuel band is various, and character varies, contained complicated.Particularly the waste heat boiler of high-sulfur fuel boiler, high-sulfur flue gas, the most easily produces cold end corrosion.In order to prevent cold end corrosion, boiler air preheater heat exchanger tube often adopts anti-corrosion alloy steel, but steel alloy price is high, and through practice test, resemble and examine corrosion resistant alloy steel such as stepping on steel pipe, in high-sulfur fuel boiler, the anti-corrosion time, effect was also bad substantially about half a year; And adopt ceramic coating because processing technology is different, in installation and hotly easily to come off down, the anti-corrosion time is not long yet.
The corrosion resisting property of aluminium is good, and the light specific gravity of aluminium, compare steel of the same area, its weight and price are all lower than steel, and lined steel pipe, greatly strengthen the intensity of heat exchanger tube, do not need the aluminium alloy adopting high price.
The cold-forming property of aluminium is superior, is easy at normal temperatures shape.And according to after GB/T4437.1-2000 " Al and Alalloy hot-extruded tube " technical conditions extrusion molding, be combined closely with lined steel pipe.
Summary of the invention
The utility model object is to provide a kind of efficient heat transfer anti-low-temperature corrosion Horizontal air preheater, to realize air preheater high efficient heat exchanging and to prevent the cold end corrosion at high-sulfur combustor boiler tail.It can solve the cold end corrosion of the low-temperature air preheater heat exchanger tube of high-sulfur combustor boiler preferably, and strengthens air preheater heat transfer effect.
For achieving the above object, the utility model have employed following technical proposals:
A kind of efficient heat transfer anti-low-temperature corrosion Horizontal air preheater; comprise housing; erection upper, lower tube plate in housing; and air intlet flange, air outlet slit flange, gas approach flange, exhanst gas outlet flange are installed; it is characterized in that; upper and lower tube sheet is installed efficient heat transfer aluminium fin heat exchanger tube; air outlet slit flange connects air inlet and the gas outlet of efficient heat transfer aluminium fin heat exchanger tube respectively, and described efficient heat transfer aluminium fin heat exchanger tube is formed by lined steel pipe with at the hot-pressed aluminium fin protective layer that lined steel pipe closely wraps up outward.
Technique effect of the present utility model is: by heat exchange and the antisepsis of efficient heat transfer aluminium fin heat exchanger tube, greatly can improve air preheater service life, the heat-transfer effect of strengthening air preheater, also reduce air preheater heat exchange area, alleviate air preheater weight, and make reduction exhaust gas temperature become possibility, improve the efficiency of boiler.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the structural representation of efficient heat transfer aluminium fin heat exchanger tube described in the utility model.
Icon illustrates: 1. upper and lower tube sheet; 2. efficient heat transfer aluminium fin heat exchanger tube; 3. air intlet flange; 4. air outlet slit flange; 5. gas approach flange; 6. exhanst gas outlet flange; 21. lined steel pipes; 22. aluminium fins; 23. thin aluminium protective layers.
Detailed description of the invention
As shown in Figure 1, the utility model comprises housing, in housing in erection, lower perforated plate (1), and air intlet flange (3) is installed, air outlet slit flange (4), gas approach flange (5), exhanst gas outlet flange (6), upper, lower perforated plate (1) is upper installs efficient heat transfer aluminium fin heat exchanger tube (2), air intlet flange (3), air outlet slit flange (4) connects air inlet and the gas outlet of efficient heat transfer aluminium fin heat exchanger tube (2) respectively, as shown in Figure 2, described efficient heat transfer aluminium fin heat exchanger tube is formed by lined steel pipe (21) with at the hot-pressed aluminium fin protective layer that lined steel pipe (21) closely wraps up outward, described hot-pressed aluminium fin protective layer comprises by the thin aluminium protective layer (23) between the aluminium fin (22) of hot-pressed formation and aluminium fin, thin aluminium protective layer (23) can prevent corrosion by Enough, aluminium fin (22) becomes the extended surface of heat exchanger tube simultaneously, augmentation of heat transfer greatly.Lined steel pipe (21) enhances the intensity of heat exchanger tube.
During use, flue gas enters air preheater by gas approach flange (5), skim over efficient heat transfer fin heat exchange tube (2) outer surface, air enters air preheater by air intlet flange (3), through in efficient heat transfer fin heat exchange tube (2), after air and the abundant heat exchange of flue gas, enter respective next stage equipment by respective outlet(discharge) flange.
Claims (2)
1. an efficient heat transfer anti-low-temperature corrosion Horizontal air preheater; comprise housing; erection upper, lower tube plate in housing; and air intlet flange, air outlet slit flange, gas approach flange, exhanst gas outlet flange are installed; it is characterized in that; upper and lower tube sheet is installed efficient heat transfer aluminium fin heat exchanger tube; air outlet slit flange connects air inlet and the gas outlet of efficient heat transfer aluminium fin heat exchanger tube respectively, and described efficient heat transfer aluminium fin heat exchanger tube is formed by lined steel pipe with at the hot-pressed aluminium fin protective layer that lined steel pipe closely wraps up outward.
2. efficient heat transfer anti-low-temperature corrosion Horizontal air preheater according to claim 1, is characterized in that, described hot-pressed aluminium fin protective layer comprises by the thin aluminium protective layer between the aluminium fin of hot-pressed formation and aluminium fin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520045678.1U CN204421053U (en) | 2015-01-23 | 2015-01-23 | Efficient heat transfer anti-low-temperature corrosion Horizontal air preheater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520045678.1U CN204421053U (en) | 2015-01-23 | 2015-01-23 | Efficient heat transfer anti-low-temperature corrosion Horizontal air preheater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204421053U true CN204421053U (en) | 2015-06-24 |
Family
ID=53471419
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520045678.1U Active CN204421053U (en) | 2015-01-23 | 2015-01-23 | Efficient heat transfer anti-low-temperature corrosion Horizontal air preheater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204421053U (en) |
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2015
- 2015-01-23 CN CN201520045678.1U patent/CN204421053U/en active Active
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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 | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 330000 Nanchang national high tech Industrial Development Zone, Jiangxi torch street, No. 125 Patentee after: Jiang Lian heavy industry group Limited by Share Ltd Address before: 330000 Nanchang national high tech Industrial Development Zone, Jiangxi torch street, No. 125 Patentee before: Jianglian Heavy Industry Co., Ltd. |