CN204943544U - A kind of turbolator-cast iron pipe Combined air preheater - Google Patents
A kind of turbolator-cast iron pipe Combined air preheater Download PDFInfo
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- CN204943544U CN204943544U CN201520572963.9U CN201520572963U CN204943544U CN 204943544 U CN204943544 U CN 204943544U CN 201520572963 U CN201520572963 U CN 201520572963U CN 204943544 U CN204943544 U CN 204943544U
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- Prior art keywords
- air preheater
- turbolator
- cast iron
- iron pipe
- heat exchange
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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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- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The utility model discloses a kind of turbolator-cast iron pipe Combined air preheater, comprise turbolator air preheater, be arranged on the gas approach on described turbolator air preheater top, with the air outlet slit be arranged on described turbolator air preheater sidewall, described turbolator air preheater bottom is connected with cast iron pipe air preheater, described cast iron pipe air preheater bottom is connected with exhanst gas outlet, described cast iron pipe air preheater sidewall is provided with air intlet, air duct is connected with between described cast iron pipe air preheater sidewall and turbolator air preheater sidewall.The utility model has the advantages such as structure is simple, cost is low, suitability of fuel is wide, and solves the problem of air preheater dew point corrosion.
Description
Technical field
The utility model relates to a kind of heat-exchanger rig, especially relates to a kind of turbolator-cast iron pipe Combined air preheater being applicable to heating furnace waste heat recovery.
Background technology
At present, the waste heat that the industry waste heat recovery system of heating furnace such as chemical industry, petrochemical industry and Coal Chemical Industry generally adopt air preheater to come in recovered flue gas, to reach raising thermal efficiency of heating furnace, reduces operating cost object.In theory in order to improve thermal efficiency of heating furnace, heating furnace exhaust gas temperature should be reduced as far as possible.Affect by sulphur in exhaust gas components and water content in practical application, when flue gas exhaust gas temperature drops to a certain degree, inevitably will there is dew point corrosion in various degree in air preheater low-temperature zone end, greatly will shorten air preheater service life during seriously corroded.The heat exchange element of air preheater or employing one type in prior art, as turbolator air preheater, heat pipe preheater, or adopt combined type heat exchange element, as turbolator+heat pipe preheater etc., all there is aforementioned dew point corrosion problem in above air preheater, affects the service life of air preheater.
Utility model content
The purpose of this utility model overcomes deficiency of the prior art, provides a kind of corrosion-resistant, structure is simple, cost is low, suitability of fuel is wide turbolator+cast iron pipe Combined air preheater.
In order to solve the problems of the technologies described above, the utility model provides a kind of turbolator-cast iron pipe Combined air preheater, comprise turbolator air preheater, be arranged on the gas approach on described turbolator air preheater top, with the air outlet slit be arranged on described turbolator air preheater sidewall, described turbolator air preheater bottom is connected with cast iron pipe air preheater, described cast iron pipe air preheater bottom is connected with exhanst gas outlet, described cast iron pipe air preheater sidewall is provided with air intlet, air duct is connected with between described cast iron pipe air preheater sidewall and turbolator air preheater sidewall.
Described turbolator air preheater comprises turbolator heat exchange element and is arranged on the high temperature section housing outside described turbolator heat exchange element, is provided with high temperature section lining between described high temperature section housing and turbolator heat exchange element.
Described turbolator heat exchange element is that the wherein a kind of of the heat exchanger tube of spiral grooved tube or inner wall belt turbolator is formed.
Described cast iron pipe air preheater comprises cast iron pipe heat exchange element and is arranged on the low-temperature zone housing outside described cast iron pipe heat exchange element, is provided with low-temperature zone lining between described low-temperature zone housing and cast iron pipe heat exchange element.
Described cast iron pipe heat exchange element is made up of cast-in-block base tube, interior extended surface and outer extended surface, described interior extended surface is made up of the longitudinal fin along described base tube inwall axial distribution, described outer extended surface is made up of the wherein one of the fin or ailhead that are distributed in base tube outer wall, and described ailhead is circular or oval.
Adopt between described each parts and be tightly connected, described in be tightly connected as each ends adopts flange arrangement to connect, described flange sealing surface outer is provided with one seal weld.
The beneficial effects of the utility model are:
1, the utility model utilizes cast iron pipe heat exchange element at the silicate diaphragm of casting process by being formed with molding sand interactive surfaces, and cast iron pipe is formed be attached to the passivation protection film of Cast Iron Surface in sulfur corrosion environment, protection underlying substrate, slowing down corrosion is developed in depth and breadth to cast iron, improves the resistance to dew point corrosion ability of cast iron pipe heat exchange element;
2, the utility model high temperature section selects turbolator heat exchange element, utilizes the advantages such as its structure is simple, technology maturation, cost are low.Only low-temperature zone selects cast iron pipe heat exchange element, utilizes its excellent resistance to dew point corrosion performance simultaneously, avoid all select cast iron pipe regenerative air heater to cause air preheater weight is large, high cost is not enough.The advantage that the utility model device gives full play to single turbolator and single cast iron pipe two kinds of air preheaters avoids its limitation with not enough simultaneously, and comprehensive cost performance is high;
3, the utility model suitability of fuel is wider.Conventional soot blower can be adopted after dust stratification appears in cast iron pipe heat exchange element to carry out, except ash manipulation, therefore except being applicable to gas-fired heater residual neat recovering system, being also applicable to the fuel oil heating residual neat recovering system that ash content is heavier.
Accompanying drawing explanation
Fig. 1: the utility model structural representation;
Fig. 2-1: the outer extended surface of the utility model is the cast iron pipe heat exchange element structural representation of fin;
Fig. 2-2: the outer extended surface of the utility model is the cast iron pipe heat exchange element structural representation of ailhead.
Accompanying drawing marks: 1, gas approach; 2, turbolator air preheater; 3, cast iron pipe air preheater; 4, exhanst gas outlet; 5, air intlet; 6, air duct; 7, air outlet slit; 8, turbolator heat exchange element; 9, high temperature section lining; 10, high temperature section housing; 11, cast iron pipe heat exchange element; 12, low-temperature zone lining; 13, low-temperature zone housing; 14, base tube; 15, interior extended surface; 16, outer extended surface.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model will be further described.
As shown in accompanying drawing 1-2, a kind of turbolator-cast iron pipe Combined air preheater, comprise turbolator air preheater 2, the high temperature section housing 10 that described turbolator air preheater 2 comprises turbolator heat exchange element 8 and is arranged on outside described turbolator heat exchange element 8, is provided with high temperature section lining 9 between described high temperature section housing 10 and turbolator heat exchange element 8; Described turbolator heat exchange element 8 is that the wherein a kind of of the heat exchanger tube of spiral grooved tube or inner wall belt turbolator is formed.Described turbolator air preheater 2 top is connected with gas approach 1, its sidewall is connected with air outlet slit 7.Described turbolator air preheater 2 bottom is connected with cast iron pipe air preheater 3, the low-temperature zone housing 13 that described cast iron pipe air preheater 3 comprises cast iron pipe heat exchange element 11 and is arranged on outside described cast iron pipe heat exchange element 11, is provided with low-temperature zone lining 12 between described low-temperature zone housing 13 and cast iron pipe heat exchange element 11; Described cast iron pipe heat exchange element 11 is made up of cast-in-block base tube 14, interior extended surface 15 and outer extended surface 16, described interior extended surface 15 is made up of the longitudinal fin along described base tube 14 inwall axial distribution, described outer extended surface 16 is made up of the wherein one of the fin or ailhead that are distributed in base tube 14 outer wall, and described ailhead is circular or oval.Described cast iron pipe air preheater 3 bottom is connected with exhanst gas outlet 4, described cast iron pipe air preheater 3 sidewall is provided with air intlet 5, is connected with air duct 6 between described cast iron pipe air preheater 3 sidewall and turbolator air preheater 2 sidewall.Adopt between described each parts and be tightly connected, namely each ends is first connected by flange arrangement, then increases by one seal weld in flange sealing surface outer, to reduce air preheater leakage rate further.
Utilize the method that heating furnace waste heat is reclaimed of the utility model device, comprise the following steps: first, prepare and above-mentioned air preheater is installed; After installing, the high-temperature flue gas that heating furnace is discharged enters air preheater by gas approach 1, and meanwhile, Cryogenic air enters air preheater by air intlet 5; After the high-temperature flue gas entering air preheater flows through turbolator air preheater 2 and cast iron pipe air preheater 3 and air heat-exchange successively, temperature reduces, and low-temperature flue gas leaves air preheater by exhanst gas outlet 4; Simultaneously, after the Cryogenic air entering air preheater flows through cast iron pipe air preheater 3, air duct 6 and turbolator air preheater 2 and flue gas heat exchange successively, temperature raises, high temperature air leaves air preheater by air outlet slit 7, completes the waste heat in recovered flue gas.
Claims (6)
1. turbolator-cast iron pipe Combined air preheater, comprise turbolator air preheater, be arranged on the gas approach on described turbolator air preheater top, with the air outlet slit be arranged on described turbolator air preheater sidewall, it is characterized in that, described turbolator air preheater bottom is connected with cast iron pipe air preheater, described cast iron pipe air preheater bottom is connected with exhanst gas outlet, described cast iron pipe air preheater sidewall is provided with air intlet, air duct is connected with between described cast iron pipe air preheater sidewall and turbolator air preheater sidewall.
2. turbolator according to claim 1-cast iron pipe Combined air preheater, it is characterized in that, described turbolator air preheater comprises turbolator heat exchange element and is arranged on the high temperature section housing outside described turbolator heat exchange element, is provided with high temperature section lining between described high temperature section housing and turbolator heat exchange element.
3. turbolator according to claim 2-cast iron pipe Combined air preheater, is characterized in that, described turbolator heat exchange element is that the wherein a kind of of the heat exchanger tube of spiral grooved tube or inner wall belt turbolator is formed.
4. turbolator according to claim 1-cast iron pipe Combined air preheater, it is characterized in that, described cast iron pipe air preheater comprises cast iron pipe heat exchange element and is arranged on the low-temperature zone housing outside described cast iron pipe heat exchange element, is provided with low-temperature zone lining between described low-temperature zone housing and cast iron pipe heat exchange element.
5. turbolator according to claim 4-cast iron pipe Combined air preheater, it is characterized in that, described cast iron pipe heat exchange element is made up of cast-in-block base tube, interior extended surface and outer extended surface, described interior extended surface is made up of the longitudinal fin along described base tube inwall axial distribution, described outer extended surface is made up of the wherein one of the fin or ailhead that are distributed in base tube outer wall, and described ailhead is circular or oval.
6. turbolator according to claim 1-cast iron pipe Combined air preheater, it is characterized in that, adopt between described each parts and be tightly connected, described in be tightly connected as each ends adopts flange arrangement to connect, described flange sealing surface outer is provided with one seal weld.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520572963.9U CN204943544U (en) | 2015-07-31 | 2015-07-31 | A kind of turbolator-cast iron pipe Combined air preheater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520572963.9U CN204943544U (en) | 2015-07-31 | 2015-07-31 | A kind of turbolator-cast iron pipe Combined air preheater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204943544U true CN204943544U (en) | 2016-01-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520572963.9U Active CN204943544U (en) | 2015-07-31 | 2015-07-31 | A kind of turbolator-cast iron pipe Combined air preheater |
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| CN (1) | CN204943544U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105066166A (en) * | 2015-07-31 | 2015-11-18 | 天津辰创环境工程科技有限责任公司 | Turbolator-cast iron tube combined type air preheater and heating furnace waste heat recycling method |
| CN110513716A (en) * | 2019-09-25 | 2019-11-29 | 杨学让 | A kind of fin tubular air preheater |
-
2015
- 2015-07-31 CN CN201520572963.9U patent/CN204943544U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105066166A (en) * | 2015-07-31 | 2015-11-18 | 天津辰创环境工程科技有限责任公司 | Turbolator-cast iron tube combined type air preheater and heating furnace waste heat recycling method |
| CN110513716A (en) * | 2019-09-25 | 2019-11-29 | 杨学让 | A kind of fin tubular air preheater |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |