CN218237440U - High-heat-efficiency conversion system of high-temperature steam superheater of styrene device - Google Patents
High-heat-efficiency conversion system of high-temperature steam superheater of styrene device Download PDFInfo
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- CN218237440U CN218237440U CN202222198069.2U CN202222198069U CN218237440U CN 218237440 U CN218237440 U CN 218237440U CN 202222198069 U CN202222198069 U CN 202222198069U CN 218237440 U CN218237440 U CN 218237440U
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Abstract
The utility model provides a high thermal efficiency conversion system of styrene device high temperature steam superheater, including steam superheater and low-pressure condensate flash tank, low-pressure condensate flash tank is connected to steam superheater convection section, still is equipped with condensate heat exchanger between low-pressure condensate flash tank and the steam superheater, and low-pressure condensate flash tank connects the shell at condensate heat exchanger, and condensate heat exchanger's pipe layer is connected with stripper condenser and stripper, and the low temperature process water of stripper condenser gets into the stripper after the heat exchanger pipe layer heats, the utility model discloses rationally utilize the waste heat of low-pressure condensate in the device, 95 t/h's low temperature process water is through newly-increased condensate heat exchanger heat transfer back, and temperature 50 ℃ improves to 65 ℃, can practice thrift former 0.25MPa steam 2.65t/h, can reduce device low-pressure steam and fuel gas consumption, improve the heating furnace thermal efficiency, realize device energy saving and consumption reduction.
Description
Technical Field
The utility model relates to an energy saving and consumption reduction technical field, concretely relates to high thermal efficiency conversion system of styrene device high temperature steam superheater.
Background
A styrene device high-temperature steam superheater adopts a convection section to exchange heat with flue gas of a heating furnace by using low-pressure condensate of about 109 ℃ produced by the device, the condensate after flue gas waste heat is recovered to a steam drum for water supplement, and 0.35MPa steam is produced for use by the device. Along with the increase of the operation period and the load of the device, the temperature of the exhaust gas gradually rises from 130 ℃ to 160 ℃, the thermal efficiency is reduced from 92.5 percent to 91.5 percent, the heat loss of the heating furnace is large, and the consumption of the fuel gas is increased.
Disclosure of Invention
In order to solve the technical defects of high exhaust gas temperature and reduced thermal efficiency of the steam superheater existing in the prior art, the utility model provides a high-temperature steam superheater high-thermal-efficiency conversion system of a styrene device.
The utility model discloses a technical solution be: the utility model provides a high thermal efficiency conversion system of styrene device high temperature steam superheater, includes steam superheater and low-pressure condensate flash tank, low-pressure condensate flash tank be connected to steam superheater convection section, low-pressure condensate flash tank and steam superheater between still be equipped with condensate heat exchanger, low-pressure condensate flash tank connect the shell at condensate heat exchanger, condensate heat exchanger's pipe layer be connected with stripper condenser and stripper, the low temperature process water of stripper condenser enter into the stripper after the heat exchanger pipe layer heats.
And a three-way temperature control valve capable of adjusting the flow of the condensate entering the heat exchanger is arranged between the shell of the condensate heat exchanger and the low-low pressure condensate flash tank.
And the convection section of the steam superheater is also connected with a low-pressure waste heat exchanger steam drum.
And hand valves and auxiliary line valves are arranged at the inlet and the outlet of the shell layer of the condensate heat exchanger.
The utility model has the advantages that: the utility model provides a high-temperature steam superheater high thermal efficiency conversion system of styrene device, including steam superheater and low-pressure condensate flash tank, low-pressure condensate flash tank is connected to steam superheater convection section, still is equipped with condensate heat exchanger between low-pressure condensate flash tank and the steam superheater, and the shell at condensate heat exchanger is connected to low-pressure condensate flash tank, and condensate heat exchanger's tube layer is connected with strip tower condenser and strip tower, and strip tower condenser's low-temperature process water gets into the strip tower after the heat exchanger tube layer heats, the utility model discloses rational utilization the waste heat of low-pressure condensate in the device, 95 t/h's low-temperature process water is through newly-increased condensate heat exchanger heat transfer back, and temperature 50 ℃ improves to 65 ℃, can practice thrift former 0.25MPa steam 2.65t/h, can reduce device low-pressure steam and fuel gas consumption, improve the thermal efficiency, realize device energy saving and consumption reduction.
Drawings
FIG. 1 is a schematic diagram of the high heat efficiency conversion system of the high temperature steam superheater of the styrene device of the present invention.
The system comprises a steam superheater 1, a low-pressure condensate flash tank 2, a condensate heat exchanger 3, a stripper condenser 4, a stripper 5, a stripper 6, a three-way temperature control valve 6 and a low-pressure waste heat exchanger steam drum 7.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work all belong to the protection scope of the present invention.
The utility model provides a high thermal efficiency conversion system of styrene device high temperature steam superheater, includes steam superheater 1 and low-pressure condensate flash tank 2, low-pressure condensate flash tank 2 be connected to 1 convection current section of steam superheater, low-pressure condensate flash tank 2 and steam superheater 1 between still be equipped with condensate heat exchanger 3, low-pressure condensate flash tank 2 connect the shell at condensate heat exchanger 3, condensate heat exchanger 3's pipe layer be connected with stripper condenser 4 and stripper 5, the low temperature process water of stripper condenser 4 enter into stripper 5 after the heat exchanger pipe layer heats. And a three-way temperature control valve 6 capable of adjusting the flow of the condensate entering the heat exchanger is also arranged between the shell of the condensate heat exchanger 3 and the low-low pressure condensate flash tank 2. The utility model discloses an increase a lime set heat exchanger, low-pressure lime set gets into the heat exchanger shell through the pump, and the tower is got into again after the heating of low temperature technology water process heat exchanger tube layer. A three-way temperature control valve is arranged before low-pressure condensate enters a shell layer of the heat exchanger, and the flow of the condensate entering the heat exchanger can be adjusted to realize the stable control of the tower inlet temperature of process water.
And the convection section of the steam superheater 1 is also connected with a low-pressure waste heat exchanger steam drum 7. Utilize steam superheater convection current section residual space, add 40 finned tubes that length is 15m, the diameter is 141mm below former finned tube, former finned tube export and newly-increased finned tube entry welding, newly-increased finned tube export lime set gets into the steam pocket and mends aquatic product 0.35MPa steam and supply this device to use.
And hand valves and secondary line valves are arranged at the inlet and the outlet of the shell layer of the condensate heat exchanger 3, so that the integral cutting-out of the heat exchanger can be realized, and the normal operation of the stripping tower and the heating furnace is not influenced.
The skilled person should understand that: although the present invention has been described in accordance with the above embodiments, the inventive concept is not limited to this embodiment, and any modification of the inventive concept will be included in the scope of the patent claims.
It is above only the utility model discloses a preferred embodiment, the utility model discloses a scope of protection does not only confine above-mentioned embodiment, the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that modifications and embellishments within the scope of the present disclosure may be made by those skilled in the art without departing from the principles of the present disclosure.
Claims (4)
1. The utility model provides a high thermal efficiency conversion system of styrene device high temperature steam superheater, includes steam superheater (1) and low-pressure condensate flash tank (2), low-pressure condensate flash tank (2) be connected to steam superheater (1) convection section, a serial communication port, low-pressure condensate flash tank (2) and steam superheater (1) between still be equipped with condensate heat exchanger (3), low-pressure condensate flash tank (2) connect the shell at condensate heat exchanger (3), the tube layer of condensate heat exchanger (3) be connected with stripper condenser (4) and stripper (5), the low temperature process water of stripper condenser (4) enter into stripper (5) after the heat exchanger tube layer heats.
2. The high-temperature steam superheater high-heat-efficiency conversion system of a styrene device as claimed in claim 1, characterized in that a three-way temperature control valve (6) capable of adjusting the flow of condensate entering the heat exchanger is further arranged between the shell of the condensate heat exchanger (3) and the low-pressure condensate flash tank (2).
3. The high-heat-efficiency conversion system of the high-temperature steam superheater of the styrene device according to claim 1, characterized in that a low-pressure waste heat exchanger steam drum (7) is further connected to the convection section of the steam superheater (1).
4. The high-heat-efficiency conversion system of the high-temperature steam superheater of the styrene device as claimed in claim 1, wherein a hand valve and a secondary line valve are arranged at an inlet and an outlet of a shell layer of the condensate heat exchanger (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222198069.2U CN218237440U (en) | 2022-08-22 | 2022-08-22 | High-heat-efficiency conversion system of high-temperature steam superheater of styrene device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222198069.2U CN218237440U (en) | 2022-08-22 | 2022-08-22 | High-heat-efficiency conversion system of high-temperature steam superheater of styrene device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218237440U true CN218237440U (en) | 2023-01-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222198069.2U Active CN218237440U (en) | 2022-08-22 | 2022-08-22 | High-heat-efficiency conversion system of high-temperature steam superheater of styrene device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218237440U (en) |
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2022
- 2022-08-22 CN CN202222198069.2U patent/CN218237440U/en active Active
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