CN207741617U - A kind of more cold energy demand utilization systems of ethylene low temperature storing and transporting cold energy fecund line - Google Patents
A kind of more cold energy demand utilization systems of ethylene low temperature storing and transporting cold energy fecund line Download PDFInfo
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- CN207741617U CN207741617U CN201721619853.9U CN201721619853U CN207741617U CN 207741617 U CN207741617 U CN 207741617U CN 201721619853 U CN201721619853 U CN 201721619853U CN 207741617 U CN207741617 U CN 207741617U
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Abstract
The utility model is related to a kind of more cold energy demand utilization systems of ethylene low temperature storing and transporting cold energy fecund line, including cold energy make full use of device and cold energy it is insufficient utilize device, cold energy makes full use of the liquid phase low temperature ethylene of device successively through liquid phase low temperature ethylene pipeline, ethylene heat exchanger, ethylene unit area freezes water- to-water heat exchanger, ethylene reheater sends out gaseous ethene by gaseous ethene pipeline, the ethyl alcohol heat exchanger of ethylene heat exchanger and outer device chilled water heat exchanger are tube shell type structure, ethyl alcohol heat exchanger is connected to the shell side of outer device chilled water heat exchanger, the tube side of ethyl alcohol heat exchanger is connected to liquid phase low temperature ethylene pipeline, ethylene unit area freezes between water- to-water heat exchanger, the external chilled water of tube side of outer device chilled water heat exchanger.Raw material excess energy utilizes in system integrated industrial production, energy-saving and emission-reduction.
Description
Technical field
The utility model is related to a kind of cold energy use system, how cold specifically a kind of ethylene low temperature storing and transporting cold energy fecund line is
It can demand utilization system.
Background technology
In Chemical Manufacture, buying ethylene generally use low temperature liquid phase transport needs to add by steam before entering production
Heat, while storage at lower temperature is needed after ethylene oxide, carbon dioxide production, respective independent heating, cooling in existing industrial production,
Energy loss is virtually caused, the equipment such as air separator for improving production cost, and being equipped in production, same meeting
Part hot water is generated, hot water direct emission equally causes energy loss.
Invention content
For energy loss problem in industrial production in the prior art, the utility model provides a kind of industrial production Central Plains
A kind of more cold energy demand utilization systems of ethylene low temperature storing and transporting cold energy fecund line that material excess energy utilizes.The utility model uses
Technical solution be：A kind of more cold energy demand utilization systems of ethylene low temperature storing and transporting cold energy fecund line, including cold energy make full use of dress
Set with cold energy it is insufficient utilize device, it includes liquid phase low temperature ethylene pipeline, ethylene heat exchanger, second that the cold energy, which makes full use of device,
Alkene device area freezes water- to-water heat exchanger, ethylene reheater, gaseous ethene pipeline, and liquid phase low temperature ethylene is successively through liquid phase low temperature ethylene pipe
Line, ethylene heat exchanger, ethylene unit area freezing water- to-water heat exchanger, ethylene reheater send out gaseous ethene, institute by gaseous ethene pipeline
It includes ethyl alcohol heat exchanger and outer device chilled water heat exchanger to state ethylene heat exchanger, ethyl alcohol heat exchanger and outer device chilled water heat exchanger
It is tube shell type structure, ethyl alcohol heat exchanger is connected to the shell side of outer device chilled water heat exchanger, the tube side connection of ethyl alcohol heat exchanger
Between liquid phase low temperature ethylene pipeline, ethylene unit area freezing water- to-water heat exchanger, the tube side of outer device chilled water heat exchanger is external cold
Freeze water, ethylene unit area freezing water- to-water heat exchanger connection ethylene unit area freezes water circulation system, ethylene unit area chilled water
The circulatory system includes ethylene unit area freezing water storage tank, ethylene unit area chilled water pump, freezing water- to-water heat exchanger, and ethylene unit area is cold
Freeze water storage tank, ethylene unit area chilled water pump, ethylene unit area freezing water- to-water heat exchanger, freezing water- to-water heat exchanger to be sequentially connected；It is described
The insufficient utilization device of cold energy includes three-way control valve, by-passing valve, methyl alcohol vaporizing device, ethylene vaporizer, ethylene superheater, threeway
Regulating valve is set between ethylene heat exchanger, ethylene unit area freezing water- to-water heat exchanger and connection ethylene vaporizer tube side import, liquid
Phase low temperature ethylene pipeline connects ethylene vaporizer tube side import, methyl alcohol vaporizing device, ethylene vaporizer, ethylene superheater through by-passing valve
Shell side be sequentially communicated, methyl alcohol vaporizing device tube side connects steam, and the outlet of ethylene vaporizer tube side is separately connected gaseous ethene contact pipe
Oral with ethylene superheater tube side, the outlet of ethylene superheater tube side connects another producing line gaseous ethene contact pipe.
Further, the ethylene unit area freezing water circulation system further includes circulating water device area, circulating water device area
Including row's formula heat exchanger tube and circulating water pool, circulating water pool connects industrial production circulating water line, and row's formula heat exchanger tube is set to recirculated water
In pond and connect freezing water- to-water heat exchanger and ethylene unit area freezing water storage tank.
Further, the ethylene reheater connects industrial production circulating water line.
Further, it is equipped with quick action emergency valve between the ethylene heat exchanger, ethylene unit area freezing water- to-water heat exchanger.
Further, it is additionally provided with the preposition heat exchanger of ethylene between the liquid phase low temperature ethylene pipeline, ethylene heat exchanger.
Further, the freezing water- to-water heat exchanger is space division water cooler, and space division water cooler connects industrial production air point
From device.
Before use, making full use of device to carry out cold energy use, Low Temperature Liquid through cold energy after ethylene low temperature liquid phase is transported to factory
Phase ethylene freezes water- to-water heat exchanger, ethylene by liquid phase low temperature ethylene pipeline into preposition heat exchanger, ethylene heat exchanger, ethylene unit area
It is discharged by gaseous ethene pipeline after reheater and is produced and used to downstream, ethylene may be selected to set the preposition heat exchange heating of heat exchanger before menstruation
Afterwards, first after the external chilled water of tube side or ethylene oxide the storage heat exchange of ethylene heat exchanger and outer device chilled water heat exchanger
Chilled water or carbon dioxide storage heat exchange after chilled water carry out heat exchange heating, then through ethylene unit area freezing water- to-water heat exchanger with
Ethylene unit area freezes chilled water heat exchange in water circulation system, and chilled water is effective in space division water cooler and circulating water device area
Thermal energy in air separator and the heat recirculated water of other equipment generation is utilized, last ethylene can be again by ethylene reheater
Through being discharged by gaseous ethene pipeline after being heated up using heat recirculated water thermal energy, the heat recirculated water in industrial production is without separately plus cold
But equipment or direct emission, are conducive to energy-saving and emission-reduction.It, can be by by-passing valve directly by ethylene from liquid in cold energy without when making full use of
Sent to ethylene vaporizer after phase low temperature ethylene pipeline or preposition heat exchange, or after ethylene heat exchanger by three-way control valve by ethylene
It send to ethylene vaporizer or above-mentioned by-passing valve combination three-way control valve mixing supply ethylene and send to ethylene vaporizer, in ethylene vapour
Change and exchange heat with methyl alcohol vaporizing device in device, cooling steam is heated up again in ethylene superheater by ethylene using steam thermal energy
Submitting gaseous ethene contact pipe is discharged after the ethylene or mixing the two of vaporizer discharge produces and uses to other downstreams, is produced at one
In the case that line cold energy is unable to fully utilization, the utilization of other producing lines is supplied, effectively ensures making full use of for cold energy.
Industrial production product of ethylene oxide connects ethylene oxide energy-saving heat exchanger, and ethylene oxide tank field freezes freezing in water storage tank
Water, which is sent after being pumped up to the tube side heat exchange cooling of outer device chilled water heat exchanger to ethylene oxide energy-saving heat exchanger, to absorb heat, it is ensured that ring
Cool down storage after oxidative ethane heat exchange, is not necessarily to external cooling equipment, when outer device freezes water- to-water heat exchanger cold energy deficiency, can open cold
Machine supplements cold energy to ethylene oxide energy-saving heat exchanger, is effectively utilized thermal energy in product of ethylene oxide, reduces ethylene oxide cooling
Carrying cost.
Industrial production carbon dioxide product connects the carbon dioxide energy-saving heat exchanger that carbon dioxide plant area utilizes device, dioxy
Change carbon energy-saving heat exchanger to exchange heat with outer device chilled water heat exchanger, carbon dioxide product in carbon dioxide energy-saving heat exchanger is made to drop
Temperature, it is ensured that cool down storage after carbon dioxide heat exchange, is not necessarily to external cooling equipment, is effectively utilized thermal energy in carbon dioxide product,
Reduce carbon dioxide cooling carrying cost.
When considering ethylene oxide, carbon dioxide cooling demand and cost, carbon dioxide energy-saving heat exchanger can also be connect
It exchanges heat before ethylene oxide energy-saving heat exchanger.
Description of the drawings
FIG. 1 is a schematic structural view of the utility model；
In figure：The preposition heat exchanger 2 of liquid phase low temperature ethylene pipeline 1, ethylene, ethylene heat exchanger 3, ethyl alcohol heat exchanger 31, exterior
Set freezing water- to-water heat exchanger 32, ethylene unit area freezing water- to-water heat exchanger 4, ethylene reheater 5, gaseous ethene pipeline 6, quick action emergency valve
7, ethylene unit area freezing water storage tank 8, ethylene unit area chilled water pump 9, space division water- to-water heat exchanger 10, row's formula heat exchanger tube 11, cycle
Pond 12, three-way control valve 13, by-passing valve 14, methyl alcohol vaporizing device 15, ethylene vaporizer 16, ethylene superheater 17, ethylene oxide
Energy-saving heat exchanger 18, ethylene oxide tank field freezing water storage tank 19, ethylene oxide tank field chilled water pump 20, cold 21, static mixing
Device 22, carbon dioxide energy-saving heat exchanger 23.
Specific implementation mode
Below in conjunction with drawings and examples, the utility model is described in further detail.
Shown in Fig. 1：A kind of more cold energy demand utilization systems of ethylene low temperature storing and transporting cold energy fecund line include that cold energy makes full use of
Device and cold energy it is insufficient utilize device.It includes liquid phase low temperature ethylene pipeline 1, the preposition heat exchanger of ethylene that cold energy, which makes full use of device,
2, ethylene heat exchanger 3, ethylene unit area freezing water- to-water heat exchanger 4, ethylene reheater 5, gaseous ethene pipeline 6, liquid phase low temperature ethylene
It is cold through liquid phase low temperature ethylene pipeline 1, the preposition heat exchanger 2 of ethylene, ethylene heat exchanger 3, quick action emergency valve 7, ethylene unit area successively
Freeze water- to-water heat exchanger 4, ethylene reheater 5 sends out gaseous ethene, the preposition heat exchanger 2 of ethylene, ethylene reheater by gaseous ethene pipeline 6
5 can connect industrial production circulating water line, and ethylene heat exchanger 3 includes ethyl alcohol heat exchanger 31 and outer device chilled water heat exchanger 32,
Ethyl alcohol heat exchanger and outer device chilled water heat exchanger are tube shell type structure, ethyl alcohol heat exchanger and outer device chilled water heat exchanger
Shell side is connected to, and the tube side of ethyl alcohol heat exchanger is connected between liquid phase low temperature ethylene pipeline, ethylene unit area freezing water- to-water heat exchanger, outside
The external ethylene oxide tank field of tube side that device freezes water- to-water heat exchanger utilizes device chilled water using device or carbon dioxide plant area,
Ethylene unit area freezes water- to-water heat exchanger 4 and connects in ethylene unit area freezing water circulation system, ethylene unit area chilled water cyclic system
System includes ethylene unit area freezing water storage tank 8, ethylene unit area chilled water pump 9, space division water- to-water heat exchanger 10,11 and of row's formula heat exchanger tube
Circulating water pool 12, ethylene unit area freeze water storage tank 8, ethylene unit area chilled water pump 9, ethylene unit area freezing water- to-water heat exchanger 4,
Space division water- to-water heat exchanger 10, row's formula heat exchanger tube 11 are sequentially connected, the 10 external air separator heat supply of space division water- to-water heat exchanger, row's formula heat exchange
Pipe 11 is placed in circulating water pool 12, the external industrial production circulating water line of circulating water pool；Cold energy is insufficient to include three using device
Logical regulating valve 13, by-passing valve 14, methyl alcohol vaporizing device 15, ethylene vaporizer 16, ethylene superheater 17, three-way control valve 13 are set to
Between ethylene heat exchanger 3, ethylene unit area freezing water- to-water heat exchanger 4 and the 16 tube side import of ethylene vaporizer is connected, is replaced before ethylene
After hot device 2 the 16 tube side import of ethylene vaporizer, methyl alcohol vaporizing device 15, ethylene vaporizer 16, ethylene overheat are connected through by-passing valve 14
The shell side of device 17 is sequentially communicated, and methyl alcohol vaporizing device tube side connects steam, and the outlet of ethylene vaporizer tube side is separately connected gaseous ethene and connects
Point pipe and ethylene superheater tube side are oral, ethylene superheater tube side outlet connection gaseous ethene contact pipe, gaseous ethene contact pipe
Supply other producing lines.
The present embodiment ethylene oxide tank field includes that ethylene oxide energy-saving heat exchanger 18, ethylene oxide tank field are cold using device
Freeze water storage tank 19, ethylene oxide tank field chilled water pump 20, cold 21, static mixer 22, ethylene oxide tank field freezes water storage tank
19 ethane via epoxyethane tank field chilled water pump 20, the tube side of outer device chilled water heat exchanger 32,22 connection rings of static mixer successively
18 import of oxidative ethane energy-saving heat exchanger, ethylene oxide energy-saving heat exchanger 18 export back chilled water connection ethylene oxide tank field chilled water
Storage tank 19 is also associated with cold 21 between 18 import of ethylene oxide tank field chilled water pump 20 and ethylene oxide energy-saving heat exchanger；Dioxy
Hua Tan devices area includes carbon dioxide energy-saving heat exchanger 23 using device, and it is cold that carbon dioxide energy-saving heat exchanger 23 is connected to outer device
Freeze between the tube side of water- to-water heat exchanger 32, static mixer 22.
In industrial production：- 103 DEG C of low temperature liquid phase ethylene are exchanged heat by liquid phase low temperature ethylene pipeline 1 through the preposition heat exchanger of ethylene 2
To -100 DEG C, heat exchange is carried out using propylene heat exchanger 31 and the propylene of ethylene heat exchanger 3, liquid ethylene is heated up by -100 DEG C
Heat exchange is carried out to -32.8 DEG C, then through ethylene unit area freezing water- to-water heat exchanger 4 and chilled water, ethylene is warming up to by -32.8 DEG C -
13.8 DEG C, and gas is become from liquid, finally passing through ethylene reheater 5 and hot water and carry out heat exchange, ethylene is heated to 20 DEG C, and
Enter gaseous ethene pipeline 6 and is conveyed to downstream unit use.10 DEG C of chilled waters of ethylene unit area freezing water- to-water heat exchanger 4 are filled by ethylene
It sets area's freezing water storage tank 8 to be sent into through ethylene unit area chilled water pump 9, carries out heat exchange with ethylene, chilled water is cooled to -10.2
DEG C, -10.2 DEG C of chilled waters, which are delivered to after space division water- to-water heat exchanger 10 is cooled to 0 DEG C, is sent into row's formula heat exchanger tube 11, in circulating water pool 12
Logical circulating hot water re-heat, chilled water are warming up to 10 DEG C by 0 DEG C, are back to ethylene unit area freezing water storage tank 8.
In the case where the unstable cold energy use of operating mode is insufficient, ethylene carries out hot friendship by propylene heat exchanger 31 and propylene
After alternatively, directly go cold energy insufficient using device by three-way control valve 13 to carry out being heated to 20 DEG C to be conveyed to downstream unit,
Methyl alcohol vaporizing device 15, ethylene vaporizer 16, the composition cold energy of ethylene superheater 17 are insufficient using device, and three heat exchangers are in an overlapping
Installation, shell side are connected by pipeline.Methanol is heated through steam and is vaporized, and quantity of steam is controlled by methanol pressure；The methanol of vaporization enters
Ethylene vaporizer 16, ethylene superheater 17, heating ethylene export different temperatures second by ethylene vaporizer 16, ethylene superheater 17
Alkene mixes, and controls the ethylene temperature of submitting at 20 DEG C or so.Also insufficient utilize of feeding cold energy can be supplemented by by-passing valve 14 to fill
The cold energy set.
When carbon dioxide plant area is worked using device, the carbon dioxide that industrial production goes out needs the storage that cools down, high temperature two
Carbonoxide is sent into carbon dioxide energy-saving heat exchanger, exchanges heat and drops with -30 DEG C of chilled waters sent by outer device chilled water heat exchanger 32
Temperature, in order to store, chilled water is warming up to -18.1 DEG C after the heat exchange of carbon dioxide energy-saving heat exchanger.
When ethylene oxide tank field is worked using device, -18.1 DEG C of chilled waters are sent to static state in carbon dioxide energy-saving heat exchanger
Chilled water is warming up to -15 DEG C by mixer 22 by -18.1 DEG C, and heat exchange, freezing are carried out by ethylene oxide energy-saving heat exchanger 18
Water is warming up to -7 DEG C by -15 DEG C, is back to ethylene oxide tank field chilled water circulating tank, ethylene oxide tank field chilled water circulating tank
Interior -7 DEG C of chilled waters send to the heat exchange of outer device chilled water heat exchanger 32 and are cooled to -30 DEG C, lead in ethylene oxide energy-saving heat exchanger 18
The ethylene oxide heat exchange that industrial production goes out cools down in order to store.
Claims (6)
1. a kind of more cold energy demand utilization systems of ethylene low temperature storing and transporting cold energy fecund line, it is characterised in that：It is fully sharp including cold energy
Device is utilized with device and cold energy are insufficient, it includes liquid phase low temperature ethylene pipeline, ethylene heat exchange that the cold energy, which makes full use of device,
Device, ethylene unit area freezing water- to-water heat exchanger, ethylene reheater, gaseous ethene pipeline, liquid phase low temperature ethylene is successively through liquid phase low temperature
Ethylene pipeline, ethylene heat exchanger, ethylene unit area freezing water- to-water heat exchanger, ethylene reheater send out gas phase second by gaseous ethene pipeline
Alkene, the ethylene heat exchanger include ethyl alcohol heat exchanger and outer device chilled water heat exchanger, ethyl alcohol heat exchanger and outer device chilled water
Heat exchanger is tube shell type structure, and ethyl alcohol heat exchanger is connected to the shell side of outer device chilled water heat exchanger, the pipe of ethyl alcohol heat exchanger
Journey is connected between liquid phase low temperature ethylene pipeline, ethylene unit area freezing water- to-water heat exchanger, the tube side of outer device chilled water heat exchanger
External chilled water, ethylene unit area freezing water- to-water heat exchanger connection ethylene unit area freeze water circulation system, ethylene unit area
Freezing water circulation system includes ethylene unit area freezing water storage tank, ethylene unit area chilled water pump, freezing water- to-water heat exchanger, ethylene dress
Area's freezing water storage tank, ethylene unit area chilled water pump, ethylene unit area freezing water- to-water heat exchanger, freezing water- to-water heat exchanger is set successively to connect
It connects；The insufficient utilization device of cold energy includes three-way control valve, by-passing valve, methyl alcohol vaporizing device, ethylene vaporizer, ethylene overheat
Device, three-way control valve is set between ethylene heat exchanger, ethylene unit area freezing water- to-water heat exchanger and connection ethylene vaporizer tube side
Import, liquid phase low temperature ethylene pipeline connect ethylene vaporizer tube side import, methyl alcohol vaporizing device, ethylene vaporizer, second through by-passing valve
The shell side of alkene superheater is sequentially communicated, and methyl alcohol vaporizing device tube side connects steam, and the outlet of ethylene vaporizer tube side is separately connected gas phase second
Alkene contact pipe and ethylene superheater tube side are oral, and the outlet of ethylene superheater tube side connects another producing line gaseous ethene contact pipe.
2. a kind of more cold energy demand utilization systems of ethylene low temperature storing and transporting cold energy fecund line according to claim 1, feature
It is：The ethylene unit area freezing water circulation system further includes circulating water device area, and circulating water device area includes the heat exchange of row's formula
Pipe and circulating water pool, circulating water pool connect industrial production circulating water line, and row's formula heat exchanger tube is set in circulating water pool and connects cold
Freeze water- to-water heat exchanger and ethylene unit area freezes water storage tank.
3. a kind of more cold energy demand utilization systems of ethylene low temperature storing and transporting cold energy fecund line according to claim 1, feature
It is：The ethylene reheater connects industrial production circulating water line.
4. a kind of more cold energy demand utilization systems of ethylene low temperature storing and transporting cold energy fecund line according to claim 1, feature
It is：It is equipped with quick action emergency valve between the ethylene heat exchanger, ethylene unit area freezing water- to-water heat exchanger.
5. a kind of more cold energy demand utilization systems of ethylene low temperature storing and transporting cold energy fecund line according to claim 1, feature
It is：It is additionally provided with the preposition heat exchanger of ethylene between the liquid phase low temperature ethylene pipeline, ethylene heat exchanger.
6. a kind of more cold energy demand utilization systems of ethylene low temperature storing and transporting cold energy fecund line according to claim 1, feature
It is：The freezing water- to-water heat exchanger is space division water cooler, and space division water cooler connects industrial production air separator.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201721619853.9U CN207741617U (en) | 2017-11-29 | 2017-11-29 | A kind of more cold energy demand utilization systems of ethylene low temperature storing and transporting cold energy fecund line |
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| CN201721619853.9U CN207741617U (en) | 2017-11-29 | 2017-11-29 | A kind of more cold energy demand utilization systems of ethylene low temperature storing and transporting cold energy fecund line |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117804255A (en) * | 2023-12-05 | 2024-04-02 | 连云港荣泰化工仓储有限公司 | Heat exchange station system for comprehensive utilization of cold energy |
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2017
- 2017-11-29 CN CN201721619853.9U patent/CN207741617U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117804255A (en) * | 2023-12-05 | 2024-04-02 | 连云港荣泰化工仓储有限公司 | Heat exchange station system for comprehensive utilization of cold energy |
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