CN209820227U - High-temperature-resistant and corrosion-resistant silicon carbide heat exchanger - Google Patents
High-temperature-resistant and corrosion-resistant silicon carbide heat exchanger Download PDFInfo
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- CN209820227U CN209820227U CN201920504293.5U CN201920504293U CN209820227U CN 209820227 U CN209820227 U CN 209820227U CN 201920504293 U CN201920504293 U CN 201920504293U CN 209820227 U CN209820227 U CN 209820227U
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
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- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
The utility model discloses a high temperature resistant and corrosion resistant silicon carbide heat exchanger, which comprises a heat exchange unit and a unit communicating part; the heat exchange units are connected in a straight line through sealing flanges; the upper end and the lower end of each heat exchange unit are provided with unit communicating cavities, one end of each heat exchange unit is communicated with the heat exchange unit on the left side of the heat exchange unit through the unit communicating cavity, and the other end of each heat exchange unit is communicated with the heat exchange unit on the right side of the heat exchange unit through the unit communicating cavity; the heat exchange unit comprises a reinforced shell; the inner wall of the reinforced shell is sequentially paved with a refractory fiber felt and a high-temperature fireproof plate; the upper end and the lower end of the reinforced shell are both provided with high-temperature resistant sealing plates; a plurality of silicon carbide heat exchange tubes are longitudinally arranged between the two layers of high-temperature resistant sealing plates, a plurality of through holes are correspondingly formed in the high-temperature resistant sealing plates, and the plurality of through holes correspond to the plurality of silicon carbide heat exchange tubes one to one. The utility model discloses have stronger high temperature resistant and corrosion resistance, can extensively be applicable to the waste heat recovery under adverse circumstances such as chemical industry field.
Description
Technical Field
The utility model relates to a heat exchanger especially relates to a high temperature resistant anticorrosion's carborundum heat exchanger.
Background
Waste heat recovery is an important means for energy conservation and emission reduction in the industrial field, and particularly, a large amount of waste heat exists in the industries such as steel, chemical industry, building materials, machinery, light industry, food and the like, and a waste heat recovery device is generally utilized to recycle the waste heat. When the temperature is not high or the working condition is not harsh, the structure of the waste heat recovery device is relatively simple, and the application requirement can be met by adopting the traditional stainless steel heat exchanger. However, with increasing temperatures, especially above 1000 ℃, conventional heat exchangers have not been satisfactory for use; particularly, when the flue gas contains corrosive gas or high-temperature molten salt, the current waste heat recovery technology is still blank. For example, in a high-temperature reaction furnace in the chemical field, the normal smoke output temperature is 1200 ℃, and the byproducts contain certain sulfur dioxide and a small amount of salts such as sodium chloride, sodium sulfate and the like, and molten salt is liquid at high temperature and has very strong corrosivity; meanwhile, the heating mode required by the work of the reaction furnace is gas heating, and a large amount of hot air is required, so if the heat exchange can be carried out on the high-temperature flue gas, and the recovered waste heat is used as the working energy of the reaction furnace, the energy consumption and the production cost can be greatly saved.
SUMMERY OF THE UTILITY MODEL
In order to solve the defects of the prior art, the utility model provides a high temperature resistant and corrosion resistant silicon carbide heat exchanger.
In order to solve the technical problem, the utility model discloses a technical scheme is: a high-temperature-resistant and corrosion-resistant silicon carbide heat exchanger comprises a high-temperature flue gas inlet, a flue gas outlet, an air inlet, a hot air outlet, a heat exchange unit and a unit communication cavity; the heat exchange units are connected in a straight line through sealing flanges;
the upper end and the lower end of each heat exchange unit are provided with unit communicating cavities, one end of each heat exchange unit is communicated with the heat exchange unit on the left side of the heat exchange unit through the unit communicating cavity, and the other end of each heat exchange unit is communicated with the heat exchange unit on the right side of the heat exchange unit through the unit communicating cavity;
the high-temperature flue gas inlet and the flue gas outlet are respectively arranged at the lower ends of the heat exchange units at the two sides; the air inlet and the hot air outlet are respectively arranged at the outer ends of the heat exchange units at the two sides, the air inlet and the flue gas outlet are arranged on the same heat exchange unit, and the hot air outlet and the high-temperature flue gas inlet are arranged on the same heat exchange unit;
the heat exchange unit comprises a reinforced shell; the inner wall of the reinforced shell is sequentially paved with a refractory fiber felt and a high-temperature fireproof plate; openings are formed in the left end and the right end of the reinforcing shell, and the openings are communicated with the adjacent heat exchange units or the air inlet and the hot air outlet through sealing flanges;
the upper end and the lower end of the reinforced shell are both provided with high-temperature resistant sealing plates; vertically be provided with many carborundum heat exchange tubes between two-layer high temperature resistant closing plate, and correspond on the high temperature resistant closing plate and seted up a plurality of through-holes, a plurality of through-holes and many carborundum heat exchange tubes one-to-ones, the carborundum heat exchange tube is linked together through-hole and unit UNICOM chamber.
The lower end of the unit communication cavity is provided with an ash cleaning port or a molten salt cleaning port; and the ash cleaning port and the molten salt cleaning port are both provided with heat-resistant metal cover plates.
The two ends of the silicon carbide heat exchange tube are hermetically connected with a high-temperature resistant sealing plate through high-temperature resistant sealant.
The material of the reinforced shell is carbon steel or stainless steel.
The refractory fiber felt is made of aluminum silicate fibers or ceramic fibers or zirconia refractory fiber cotton.
The utility model discloses have stronger high temperature resistant and corrosion resistance, can extensively be applicable to the waste heat recovery under adverse circumstances such as chemical industry field, can practice thrift mill's energy consumption and manufacturing cost by a wide margin.
Drawings
Fig. 1 is a front view of the present invention.
Fig. 2 is a schematic structural diagram of a heat exchange unit.
Fig. 3 is a bottom view of fig. 1.
In the figure: 1. a high temperature flue gas inlet; 2. a flue gas outlet; 3. an air inlet; 4. a hot air outlet; 5. A heat exchange unit; 6. a reinforcing outer shell; 7. a silicon carbide heat exchange tube; 8. a refractory fiber mat; 9. a high temperature fire-proof plate; 10. a high temperature resistant sealing plate; 11. a cell communication chamber; 12. a cigarette ash cleaning port; 13. and 4, cleaning the mouth by using molten salt.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
The high-temperature-resistant and corrosion-resistant silicon carbide heat exchanger shown in fig. 1 comprises a high-temperature flue gas inlet 1, a flue gas outlet 2, an air inlet 3, a hot air outlet 4, a heat exchange unit 5 and a unit communication cavity 11; the number of the heat exchange units 5 is multiple, and the heat exchange units are connected in a straight line through sealing flanges;
the upper end and the lower end of each heat exchange unit are provided with unit communicating cavities 11, one end of each heat exchange unit is communicated with the heat exchange unit on the left side of the heat exchange unit through the unit communicating cavity, and the other end of each heat exchange unit is communicated with the heat exchange unit on the right side of the heat exchange unit through the unit communicating cavity, so that smoke can pass up and down to form a smoke walking channel;
the high-temperature flue gas inlet 1 and the flue gas outlet 2 are respectively arranged at the lower ends of the heat exchange units at the two sides; the air inlet 3 and the hot air outlet 4 are respectively arranged at the outer ends of the heat exchange units at the two sides, the air inlet 3 and the flue gas outlet 2 are arranged on the same heat exchange unit, and the hot air outlet 4 and the high-temperature flue gas inlet 1 are arranged on the same heat exchange unit, so that the traveling directions of the air and the high-temperature flue gas are opposite, and the heat exchange is better carried out;
as shown in fig. 2, the heat exchange unit comprises a reinforced shell 6, and the material of the reinforced shell 6 is carbon steel or stainless steel; the inner wall of the reinforced shell 6 is sequentially paved with a refractory fiber felt 8 and a high-temperature fireproof plate 9; the scheme can make the product suitable for high-temperature and corrosive use environments. Openings are formed in the left end and the right end of the reinforcing shell 6 and communicated with the adjacent heat exchange units or the air inlet 3 and the hot air outlet 4 through sealing flanges, so that air transversely passes through the openings to form an air travelling channel;
the upper end and the lower end of the reinforced shell 6 are both provided with high temperature resistant sealing plates 10; vertically be provided with many carborundum heat exchange tubes 7 between two-layer high temperature resistant closing plate, and correspond on the high temperature resistant closing plate and seted up a plurality of through-holes, a plurality of through-holes and many carborundum heat exchange tube one-to-ones, the carborundum heat exchange tube is linked together through-hole and unit UNICOM chamber 11.
As shown in fig. 3, the lower end of the unit communication chamber 11 is provided with an ash cleaning port 12 or a molten salt cleaning port 13; the ash cleaning port 12 and the molten salt cleaning port 13 are provided with heat-resistant metal cover plates. The temperature of the high-temperature flue gas and the cold air can be continuously reduced in the heat exchange process, so that some soot, dust and molten salt are separated out, and a silicon carbide heat exchange tube can be blocked seriously to influence the gas heat exchange efficiency and effect. Therefore, the staff can be regularly arranged to clean the falling soot and dust through the soot cleaning port 12 and the inner cavity of the silicon carbide heat exchange tube through the fused salt cleaning port 13 one by one, so that the use effect and the service life of the product are ensured.
The two ends of the silicon carbide heat exchange tube 7 are hermetically connected with a high-temperature resistant sealing plate 10 through high-temperature resistant sealant.
The refractory fiber felt 8 is made of aluminum silicate fibers, ceramic fibers or zirconia refractory fiber cotton.
The utility model has strong high temperature resistance and corrosion resistance, is suitable for waste heat recovery in severe environment, such as high temperature reaction furnaces in the chemical field, and has wide applicability; furthermore, the utility model discloses still have simple structure, set up reasonable, convenient operation, long service life's advantage.
The above embodiments are not intended to limit the present invention, and the present invention is not limited to the above examples, and the technical personnel in the technical field are in the present invention, which can also belong to the protection scope of the present invention.
Claims (5)
1. The utility model provides a high temperature resistant anticorrosive carborundum heat exchanger, includes high temperature flue gas entry (1), exhanst gas outlet (2), air inlet (3), hot-air outlet (4), its characterized in that: the heat exchanger also comprises a heat exchange unit (5) and a unit communication cavity (11); the heat exchange units (5) are multiple and are connected in a straight line through sealing flanges;
the upper end and the lower end of each heat exchange unit are provided with unit communicating cavities (11), one end of each heat exchange unit is communicated with the heat exchange unit on the left side of the heat exchange unit through the unit communicating cavity, and the other end of each heat exchange unit is communicated with the heat exchange unit on the right side of the heat exchange unit through the unit communicating cavity;
the high-temperature flue gas inlet (1) and the flue gas outlet (2) are respectively arranged at the lower ends of the heat exchange units at the two sides; the air inlet (3) and the hot air outlet (4) are respectively arranged at the outer ends of the heat exchange units at the two sides, the air inlet (3) and the flue gas outlet (2) are arranged on the same heat exchange unit, and the hot air outlet (4) and the high-temperature flue gas inlet (1) are arranged on the same heat exchange unit;
the heat exchange unit comprises a reinforcing shell (6); a refractory fiber felt (8) and a high-temperature fireproof plate (9) are sequentially paved on the inner wall of the reinforcing shell (6); openings are formed in the left end and the right end of the reinforcing shell (6), and the openings are communicated with the adjacent heat exchange units or the air inlet (3) and the hot air outlet (4) through sealing flanges;
the upper end and the lower end of the reinforced shell (6) are provided with high-temperature resistant sealing plates (10); a plurality of silicon carbide heat exchange tubes (7) are longitudinally arranged between the two layers of high-temperature resistant sealing plates, a plurality of through holes are correspondingly formed in the high-temperature resistant sealing plates, the through holes correspond to the plurality of silicon carbide heat exchange tubes one to one, and the silicon carbide heat exchange tubes are communicated with the unit communication cavity (11) through the through holes.
2. The high temperature resistant anti-corrosion silicon carbide heat exchanger of claim 1, wherein: the lower end of the unit communicating cavity (11) is provided with an ash cleaning port (12) or a molten salt cleaning port (13); and heat-resistant metal cover plates are arranged at the soot cleaning port (12) and the molten salt cleaning port (13).
3. The high temperature resistant anti-corrosion silicon carbide heat exchanger of claim 2, wherein: and two ends of the silicon carbide heat exchange tube (7) are hermetically connected with a high-temperature-resistant sealing plate (10) through high-temperature-resistant sealing glue.
4. The high temperature resistant anti-corrosion silicon carbide heat exchanger of claim 3, wherein: the material of the reinforced shell (6) is carbon steel or stainless steel.
5. The high temperature resistant anti-corrosion silicon carbide heat exchanger of claim 4, wherein: the refractory fiber felt (8) is made of aluminum silicate fibers or ceramic fibers or zirconia refractory fiber cotton.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920504293.5U CN209820227U (en) | 2019-04-15 | 2019-04-15 | High-temperature-resistant and corrosion-resistant silicon carbide heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920504293.5U CN209820227U (en) | 2019-04-15 | 2019-04-15 | High-temperature-resistant and corrosion-resistant silicon carbide heat exchanger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209820227U true CN209820227U (en) | 2019-12-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920504293.5U Active CN209820227U (en) | 2019-04-15 | 2019-04-15 | High-temperature-resistant and corrosion-resistant silicon carbide heat exchanger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209820227U (en) |
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2019
- 2019-04-15 CN CN201920504293.5U patent/CN209820227U/en active Active
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