CN219423741U - High-efficient low energy consumption recovery system of difluoro chloroethane waste gas - Google Patents
High-efficient low energy consumption recovery system of difluoro chloroethane waste gas Download PDFInfo
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- CN219423741U CN219423741U CN202223554427.5U CN202223554427U CN219423741U CN 219423741 U CN219423741 U CN 219423741U CN 202223554427 U CN202223554427 U CN 202223554427U CN 219423741 U CN219423741 U CN 219423741U
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- rectifying tower
- difluoroethane
- degassing
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- difluorochloroethane
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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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Abstract
The utility model relates to a high-efficiency low-energy consumption recovery system for difluorochloroethane waste gas, wherein a photochlorination reactor is connected with an air outlet cabinet, the air cabinet is connected with the middle part of a degassing tower through a compressor, a production buffer tank and a one-way pump, the bottom of the degassing tower is connected with the middle part and/or the lower part of a rectifying tower, the top of the rectifying tower is connected with the lower part of a rectifying tower condenser, the bottom of the rectifying tower condenser is divided into two paths which are respectively connected with a difluorochloroethane storage tank and the top or the upper part of the rectifying tower through valves, the top of the rectifying tower condenser is connected with the air cabinet, the top of the degassing tower is connected with the bottom of the degassing tower condenser, and the top of the degassing tower condenser is connected with the difluoroethane buffer tank; the difluoroethane raw material pipe and the chlorine raw material pipe are connected with the static mixer together and then are connected with the photochlorination reactor for feeding, and the difluoroethane buffer tank is connected with the difluoroethane raw material pipe. The system has simple structure, can effectively improve the energy recovery of the system and reduce the degassing energy consumption of the production line.
Description
Technical Field
The utility model relates to a chemical production system, in particular to a high-efficiency low-energy consumption recovery system for difluorochloroethane waste gas.
Background
The difluorochloroethane is a raw material for producing vinylidene fluoride which is one of the trifluoropolymerization monomers, in the existing chemical production for producing difluorochloroethane by taking difluoroethane as a raw material and chlorine, the raw material is reacted, deaerated and rectified to a finished product storage tank, and then the difluorochloroethane is required to be removed by the finished product storage tank through a finished product filling pump in the filling process, a great amount of heat contained in the difluorochloroethane and high-boiling substances is directly recovered by the existing production line, and meanwhile, the produced gas is conveyed to a deaeration tower, and a pump is directly adopted, so that the raw material which is not reacted in time in the reactor is pumped through a gas holder, the reaction rate of the difluoroethane is low, the deaeration effective rate is low, and the deaeration energy consumption is wasted.
Disclosure of Invention
The utility model provides the difluorochloroethane waste gas high-efficiency low-energy-consumption recovery system which has a simple structure and can effectively improve the energy recovery of the system and reduce the degassing energy consumption of a production line.
The technical scheme adopted by the utility model is as follows: the utility model provides a difluoro chloroethane waste gas high efficiency low energy consumption recovery system, includes photochlorination reactor and difluoro chloroethane storage tank, its characterized in that: the photochlorination reactor is connected with an air outlet cabinet, the air cabinet is connected with the middle part of a degassing tower through a compressor, a production buffer tank and a one-way pump, the bottom of the degassing tower is connected with the middle part and/or the lower part of a rectifying tower, the top of the rectifying tower is connected with the lower part of a rectifying tower condenser, the bottom of the rectifying tower condenser is divided into two paths which are respectively connected with a difluorochloroethane storage tank and the top or the upper part of the rectifying tower through valves, the top of the rectifying tower condenser is connected with the air cabinet, the top of the degassing tower is connected with the bottom of the degassing tower condenser, and the top of the degassing tower condenser is connected with the difluoroethane buffer tank; the difluoroethane raw material pipe and the chlorine raw material pipe are connected with the static mixer together and then are connected with the photochlorination reactor for feeding, and the difluoroethane buffer tank is connected with the difluoroethane raw material pipe.
And a rectifying tower reboiler is arranged at the bottom of the rectifying tower.
And the bottom of the degasser is provided with a degasser reboiler, and the degasser reboiler is connected with the middle part and/or the lower part of the rectifying tower.
And a jacket is arranged outside the output buffer tank.
The jacket is connected between the degassing tower condenser and the difluoroethane buffer tank.
The deaeration tower condenser and the rectifying tower condenser are water-cooled tube replacement or plate replacement.
According to the utility model, the difluoroethane recovered by the degassing tower is used as a buffer to supplement the feeding amount of a difluoroethane raw material pipe, so that excessive heat is prevented from being brought into a static mixer by direct return use, and is sent to a jacket of a production buffer tank when the difluoroethane is recovered by the degassing tower, and the degassing heat energy is effectively utilized for recovery; when the gas holder sends out the gas production, firstly send a large amount of gas production into the gas production buffer tank through the compressor to preheat, after the gas storage of the fixed pressure sufficient quantity of the production buffer tank is closed, the compressor is then used for a unidirectional pumping degassing tower, so that the influence on the reaction efficiency of the transition air suction gas delivery degassing tower of the gas holder is effectively prevented, meanwhile, the energy consumption of the degassing tower can be further reduced due to the pressurization degassing and the preheating of the gas production, and the recycling of difluorochloroethane waste gas difluoroethane of the whole production line is guaranteed.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
in the figure: the device comprises a difluoroethane feed pipe 1, a difluoroethane buffer tank 2, a chlorine feed pipe 3, a static mixer 4, a photochlorination reactor 5, a gas holder 6, a compressor 7, a yield buffer tank 8, a jacket 9, a one-way pump 10, a degassing tower 11, a degassing tower reboiler 12, a rectifying tower 13, a rectifying tower reboiler 14, a rectifying tower condenser 15, a difluorochloroethane storage tank 16, a degassing tower condenser 17 and a degassing recovery pipe 18.
Detailed Description
Further description is provided below with reference to the accompanying drawings.
Fig. 1 shows: a high-efficiency low-energy consumption recovery system for difluorochloroethane waste gas comprises a difluoroethane raw material pipe 1, a difluoroethane buffer tank 2, a chlorine raw material pipe 3, a static mixer 4, a photochlorination reactor 5, a gas holder 6, a compressor 7, a yield buffer tank 8, a jacket 9, a one-way pump 10, a degassing tower 11, a degassing tower reboiler 12, a rectifying tower 13, a rectifying tower reboiler 14, a rectifying tower condenser 15, a difluorochloroethane storage tank 16, a degassing tower condenser 17 and a degassing recovery pipe 18.
1. In the embodiment, a difluoroethane feed pipe 1 and a chlorine feed pipe 3 are connected with a static mixer 4 in a sharing way and then are fed into a photochlorination reactor 5, the photochlorination reactor 5 is connected with an air outlet cabinet 6, the air cabinet 6 is connected with the middle part of a degassing tower 11 through a compressor 7, a production buffer tank 8 and a one-way pump 10, a degassing tower reboiler 12 at the bottom of the degassing tower 11 is connected with the middle part and/or the lower part of a rectifying tower 13, the bottom of the rectifying tower is a rectifying tower reboiler 14, the top of the rectifying tower 13 is connected with the lower part of a rectifying tower condenser 15, the bottom of the rectifying tower condenser is respectively connected with a difluorochloroethane storage tank 16 and the top or the upper part of the rectifying tower through valves, the top of the rectifying tower condenser is connected with an air cabinet 6, the top of the degassing tower 11 is connected with the bottom of a degassing tower condenser 17, the top of the degassing tower condenser is connected with a difluoroethane buffer tank 2 through a degassing recovery pipe 18, and the difluoroethane buffer tank 2 is connected with the difluoroethane feed pipe 1. The degassing recovery pipe 18 is connected with a jacket.
On the basis of the embodiment, the deaeration tower condenser and the rectifying tower condenser in the chemical plant area are mostly selected as water cooling pipe replacement or plate replacement.
Claims (6)
1. The utility model provides a difluoro chloroethane waste gas high efficiency low energy consumption recovery system, includes photochlorination reactor and difluoro chloroethane storage tank, its characterized in that: the photochlorination reactor is connected with an air outlet cabinet, the air cabinet is connected with the middle part of a degassing tower through a compressor, a production buffer tank and a one-way pump, the bottom of the degassing tower is connected with the middle part and/or the lower part of a rectifying tower, the top of the rectifying tower is connected with the lower part of a rectifying tower condenser, the bottom of the rectifying tower condenser is divided into two paths which are respectively connected with a difluorochloroethane storage tank and the top or the upper part of the rectifying tower through valves, the top of the rectifying tower condenser is connected with the air cabinet, the top of the degassing tower is connected with the bottom of the degassing tower condenser, and the top of the degassing tower condenser is connected with the difluoroethane buffer tank; the difluoroethane raw material pipe and the chlorine raw material pipe are connected with the static mixer together and then are connected with the photochlorination reactor for feeding, and the difluoroethane buffer tank is connected with the difluoroethane raw material pipe.
2. The efficient and low-energy-consumption difluorochloroethane waste gas recovery system as claimed in claim 1, wherein: and a rectifying tower reboiler is arranged at the bottom of the rectifying tower.
3. The efficient and low-energy-consumption difluorochloroethane waste gas recovery system as claimed in claim 1, wherein: and the bottom of the degasser is provided with a degasser reboiler, and the degasser reboiler is connected with the middle part and/or the lower part of the rectifying tower.
4. The efficient and low-energy-consumption difluorochloroethane waste gas recovery system as claimed in claim 1, wherein: and a jacket is arranged outside the output buffer tank.
5. The efficient and low-energy-consumption difluorochloroethane waste gas recovery system as claimed in claim 4, wherein: the jacket is connected between the degassing tower condenser and the difluoroethane buffer tank.
6. The efficient and low-energy-consumption difluorochloroethane waste gas recovery system as claimed in claim 1, wherein: the deaeration tower condenser and the rectifying tower condenser are water-cooled tube replacement or plate replacement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223554427.5U CN219423741U (en) | 2022-12-30 | 2022-12-30 | High-efficient low energy consumption recovery system of difluoro chloroethane waste gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223554427.5U CN219423741U (en) | 2022-12-30 | 2022-12-30 | High-efficient low energy consumption recovery system of difluoro chloroethane waste gas |
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| Publication Number | Publication Date |
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| CN219423741U true CN219423741U (en) | 2023-07-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202223554427.5U Active CN219423741U (en) | 2022-12-30 | 2022-12-30 | High-efficient low energy consumption recovery system of difluoro chloroethane waste gas |
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| CN (1) | CN219423741U (en) |
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2022
- 2022-12-30 CN CN202223554427.5U patent/CN219423741U/en active Active
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