CN201306959Y - Hot-tube heat exchanger for low-temperature fume heat recovery of petrochemical atmospheric vacuum unit - Google Patents
Hot-tube heat exchanger for low-temperature fume heat recovery of petrochemical atmospheric vacuum unit Download PDFInfo
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- CN201306959Y CN201306959Y CNU200820185368XU CN200820185368U CN201306959Y CN 201306959 Y CN201306959 Y CN 201306959Y CN U200820185368X U CNU200820185368X U CN U200820185368XU CN 200820185368 U CN200820185368 U CN 200820185368U CN 201306959 Y CN201306959 Y CN 201306959Y
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- flue gas
- heat pipe
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Abstract
The utility model relates to a hot-tube heat exchanger for low-temperature fume heat recovery of a petrochemical atmospheric vacuum unit. The hot-tube heat exchanger consists of a shell (2), a hot tube (3) and a mesopore plate (5) and is characterized in that the shell (2) is internally provided with the hot tube (3); the mesopore plate (5) is arranged in the shell (2); the shell (2) is divided into a fume circulation chamber and a heated air circulation chamber by the mesopore plate (5); and an air inlet interface (1), an air outlet interface (4), a fume inlet interface (6) and a fume outlet interface (8) are respectively connected on the shell (2). The hot-tube heat exchanger can reduce the low temperature of the fume at the tail part of a heating furnace of the atmospheric vacuum unit to less than 100 DEG C for emission, and the residual heat can be fully utilized, thereby improving the fuel utilization of production equipment and reducing the energy consumption and pollution; a pollution-discharging dust hopper (7) is arranged at the bottom part of the heat exchanger, thereby being convenient for maintaining and cleaning, so as to prolong the service life of the equipment. The hot-tube heat exchanger has the advantages of simple structure, low cost, convenient promotion and application, and good economic benefit and social benefit.
Description
Technical field
The utility model belongs to a kind of low temperature recuperation of heat heat exchange of heat pipe, especially a kind of heat exchange of heat pipe that carries out waste heat recovery for petrochemical industry atmospheric and vacuum distillation unit heating furnace afterbody low-temperature flue gas specially.
Background technology
In petrochemical industry often reduces pressure the heating furnace device, adopt the fuel of high sulfur-bearing oil inferior more, because the problems such as low-temperature dew point corrosion of the flue gas that discharges, common flue gas waste heat recovery apparatus is that flue-gas temperature is dropped to 180-160 ℃ of discharging.Obviously, further reclaimed and utilized, pressed for a kind of device that can effectively reclaim petrochemical industry atmospheric and vacuum distillation unit low-temperature flue gas waste heat at present at this fume afterheat below temperature.
Summary of the invention
The purpose of this utility model then is the actual conditions at above-mentioned application, has designed a kind of heat exchange of heat pipe that is specifically designed to petrochemical industry atmospheric and vacuum distillation unit heating furnace afterbody low-temperature flue gas heat recovery.Flue-gas temperature further can be reduced to below 100 ℃ discharging, recovery waste heat to greatest extent, the heat that reclaims are used for preheated air to return heating furnace combustion-supporting, and then reach the purpose of energy-conserving and environment-protective.
The purpose of this utility model can reach by following measure:
A kind of petrochemical industry atmospheric and vacuum distillation unit low-temperature flue gas recuperation of heat heat exchange of heat pipe, form by housing, heat pipe, aperture plate, it is characterized in that being provided with heat pipe in the housing, aperture plate is installed in the housing, aperture plate is divided into flue gas flowing lumen and heated air flowing lumen with housing; Connect air intlet interface, air outlet slit interface, gas approach interface and exhanst gas outlet interface on the housing respectively.
The material of described heat pipe is that carbon steel, corrosionproof steel against sulfuric acid at dew point, the outer surface that outer surface burns plating enamel burns corrosionproof steel against sulfuric acid at dew point, pottery or the corrosion-resistant stainless steel that plates enamel.
Working medium in the described heat pipe is deionized water, ethanol, methyl alcohol or acetone.
Described heat exchanger shell adopts carbon steel material, the carbon steel material surface casting acid-resistant anti-corrosion layer that contacts with flue gas.
Described heat exchanger shell bottom is provided with the blowdown ash bucket.
Described housing is vertical layout.
The beneficial effects of the utility model are: the low flue-gas temperature of atmospheric and vacuum distillation unit heating furnace afterbody further can be reduced to discharging below 100 ℃, waste heat is made full use of, improve the fuel availability of production equipment, reduced energy consumption, reduced pollution, be provided with the blowdown ash bucket in the heat exchanger bottom, be convenient to safeguard and cleaning, increased the service life of equipment.In addition, the utility model is simple in structure, and is with low cost, easy to utilize, and economic and social benefits are good.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Among the figure: 1, air intlet interface, 2, housing, 3, heat pipe, 4, the air outlet slit interface, 5, aperture plate, 6, the gas approach interface, 7, the blowdown ash bucket, 8, the exhanst gas outlet interface.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is further described:
As Fig. 1, the petrochemical industry atmospheric and vacuum distillation unit low-temperature flue gas recuperation of heat heat exchange of heat pipe that the utility model provides is made up of housing 2, heat pipe 3, aperture plate 5, heat pipe 3 is arranged on housing 2 inside as heat transfer element, aperture plate 5 is installed in the housing 2, and aperture plate 5 is divided into flue gas flowing lumen and heated air flowing lumen with housing 2; After flue gas and heated air are separated by aperture plate 5, flow through a side of equipment respectively.Connect air intlet interface 1, air outlet slit interface 4, gas approach interface 6 and exhanst gas outlet interface 8 on the housing 2 respectively.
Air intlet interface 1, air outlet slit interface 4, gas approach interface 6 and the particular location of exhanst gas outlet interface 8 on housing 2 can adjust accordingly according to on-the-spot operating position.
Because heating furnace fuel is high sulfur-bearing oil inferior, so dew-point temperature height of flue gas, the corrosion that causes is remarkable, and the material of heat pipe 3 adopts carbon steel, corrosionproof steel against sulfuric acid at dew point, the outer surface of outer surface burning plating enamel to burn corrosionproof steel against sulfuric acid at dew point, pottery or the corrosion-resistant stainless steel of plating enamel for this reason.
Heat exchanger shell 2 adopts carbon steel material, the carbon steel material surface casting acid-resistant anti-corrosion layer that contacts with flue gas.Heat exchanger shell 2 bottoms are provided with blowdown ash bucket 7, are used for storing and discharging the cigarette ash of flue gas, are convenient to safeguard and cleaning, and increased the service life of equipment.Housing 2 is vertical layout, helps upwards circulation of flue gas.
Heat transfer element is a heat pipe 3, is made up of shell and internal working medium, and according to the operating temperature of working medium in the temperature of the outer flue gas of heat pipe and the heat pipe, working medium can adopt two media:
When the operating temperature of working medium in the heat pipe during more than or equal to 70 ℃, working medium adopts deionized water.
When the operating temperature of working medium in the heat pipe during less than 70 ℃, working medium can adopt cryogenic media, ethanol, methyl alcohol, acetone.
Working method of the present utility model is as follows:
The low-temperature flue gas that the petrochemical industry atmospheric and vacuum distillation unit produces is entered by import interface 6, bringing-up section by heat pipe 3 absorbs flue gas heat, and heat is passed to intraductal working medium by heat pipe wall, working medium heat absorption back boiling and evaporation, change steam into, steam rises to the heat release section of heat pipe 3 under the effect of pressure reduction; The cooling effect of managed outer air, the steam condensation is also outwards emitted the latent heat of condensation, and air obtains heat, and condensate liquid relies on gravity to get back to heating section.Flue gas and heated airs that aperture plate 5 will be flowed through in the housing 2 are separated, thereby avoid heat to run off because of exchange, so go round and begin again, flue gas heat is just passed to air, make air obtain heating, it is combustion-supporting that the air through heating can be used for heating furnace, makes full use of waste heat, improve the fuel availability of production equipment, and then reach the purpose of energy-conserving and environment-protective.
Claims (6)
1, a kind of petrochemical industry atmospheric and vacuum distillation unit low-temperature flue gas recuperation of heat heat exchange of heat pipe, form by housing (2), heat pipe (3), aperture plate (5), it is characterized in that being provided with in the housing (2) heat pipe (3), aperture plate (5) is installed in the housing (2), and aperture plate (5) is divided into flue gas flowing lumen and heated air flowing lumen with housing (2); Connect air intlet interface (1), air outlet slit interface (4), gas approach interface (6) and exhanst gas outlet interface (8) on the housing (2) respectively.
2, petrochemical industry atmospheric and vacuum distillation unit low-temperature flue gas recuperation of heat heat exchange of heat pipe according to claim 1, the material that it is characterized in that described heat pipe (3) are that carbon steel, corrosionproof steel against sulfuric acid at dew point, the outer surface that outer surface burns plating enamel burns corrosionproof steel against sulfuric acid at dew point, pottery or the corrosion-resistant stainless steel that plates enamel.
3, petrochemical industry atmospheric and vacuum distillation unit low-temperature flue gas recuperation of heat heat exchange of heat pipe according to claim 1 is characterized in that the working medium in the described heat pipe (3) is deionized water, ethanol, methyl alcohol or acetone.
4, petrochemical industry atmospheric and vacuum distillation unit low-temperature flue gas recuperation of heat heat exchange of heat pipe according to claim 1 is characterized in that described heat exchanger shell (2) adopts carbon steel material, the carbon steel material surface casting acid-resistant anti-corrosion layer that contacts with flue gas.
5, petrochemical industry atmospheric and vacuum distillation unit low-temperature flue gas recuperation of heat heat exchange of heat pipe according to claim 1 is characterized in that described heat exchanger shell (2) bottom is provided with blowdown ash bucket (7).
6, petrochemical industry atmospheric and vacuum distillation unit low-temperature flue gas recuperation of heat heat exchange of heat pipe according to claim 1 is characterized in that described housing (2) is vertical layout.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820185368XU CN201306959Y (en) | 2008-09-28 | 2008-09-28 | Hot-tube heat exchanger for low-temperature fume heat recovery of petrochemical atmospheric vacuum unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820185368XU CN201306959Y (en) | 2008-09-28 | 2008-09-28 | Hot-tube heat exchanger for low-temperature fume heat recovery of petrochemical atmospheric vacuum unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201306959Y true CN201306959Y (en) | 2009-09-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200820185368XU Expired - Lifetime CN201306959Y (en) | 2008-09-28 | 2008-09-28 | Hot-tube heat exchanger for low-temperature fume heat recovery of petrochemical atmospheric vacuum unit |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102384684A (en) * | 2011-09-09 | 2012-03-21 | 长春当代信息产业集团有限公司 | Gas-gas type heat exchanger capable of resisting low temperature corrosion |
| CN102705865A (en) * | 2012-06-15 | 2012-10-03 | 黄绍新 | Boiler and air preheating system thereof |
| CN102927829A (en) * | 2012-12-10 | 2013-02-13 | 南京圣诺热管有限公司 | Waste heat recovery device for moderate temperature flue gas containing high binding dust and method |
| CN102927841A (en) * | 2012-11-14 | 2013-02-13 | 南京林业大学 | Man-made board dry waste heat recycle method |
| CN103122571A (en) * | 2010-05-13 | 2013-05-29 | 李宏江 | Three-combination double-recovery energy-saving industrial clothes dryer |
| CN104479735A (en) * | 2014-12-20 | 2015-04-01 | 镇海石化建安工程有限公司 | Heat exchange system and process of atmospheric and vacuum distillation unit |
| CN107990767A (en) * | 2017-12-29 | 2018-05-04 | 无锡海悦生化装备有限公司 | For recycling the device of drier tail gas heat quantity |
-
2008
- 2008-09-28 CN CNU200820185368XU patent/CN201306959Y/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103122571A (en) * | 2010-05-13 | 2013-05-29 | 李宏江 | Three-combination double-recovery energy-saving industrial clothes dryer |
| CN102384684A (en) * | 2011-09-09 | 2012-03-21 | 长春当代信息产业集团有限公司 | Gas-gas type heat exchanger capable of resisting low temperature corrosion |
| CN102705865A (en) * | 2012-06-15 | 2012-10-03 | 黄绍新 | Boiler and air preheating system thereof |
| CN102927841A (en) * | 2012-11-14 | 2013-02-13 | 南京林业大学 | Man-made board dry waste heat recycle method |
| CN102927829A (en) * | 2012-12-10 | 2013-02-13 | 南京圣诺热管有限公司 | Waste heat recovery device for moderate temperature flue gas containing high binding dust and method |
| CN104479735A (en) * | 2014-12-20 | 2015-04-01 | 镇海石化建安工程有限公司 | Heat exchange system and process of atmospheric and vacuum distillation unit |
| CN104479735B (en) * | 2014-12-20 | 2016-03-30 | 镇海石化建安工程有限公司 | A kind of atmospheric and vacuum distillation unit heat-exchange system and technique |
| CN107990767A (en) * | 2017-12-29 | 2018-05-04 | 无锡海悦生化装备有限公司 | For recycling the device of drier tail gas heat quantity |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20090909 |