CN207713685U - A kind of coking crude benzene washing oil heat-exchange system - Google Patents
A kind of coking crude benzene washing oil heat-exchange system Download PDFInfo
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- CN207713685U CN207713685U CN201721675375.3U CN201721675375U CN207713685U CN 207713685 U CN207713685 U CN 207713685U CN 201721675375 U CN201721675375 U CN 201721675375U CN 207713685 U CN207713685 U CN 207713685U
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Abstract
The utility model discloses a kind of coking crude benzene washing oil heat-exchange systems, including sequentially connected oil gas heat exchanger (5), doublet redistribution formula heat exchanger (1), tube furnace (4) and debenzolizing tower (2), doublet redistributes formula heat exchanger (1) and contains sequentially connected level-one poor oil-rich heat exchanger (8), oil-poor redistributor (9) and two level poor oil-rich heat exchanger (10).Existing poor oil-rich heat exchanger is replaced using doublet redistribution formula heat exchanger in the coking crude benzene washing oil heat-exchange system, doublet redistribution formula heat exchanger have the characteristics that compact-sized, classification exchange heat, it is oil-poor redistribute, should not block, heat transfer coefficient height, heatproof, it is resistance to press, corrosion protection abrasion resistant it is strong.The coking crude benzene washing oil heat-exchange system can realize the oil-poor effective temperature-reducing of crude benzol distillation heat, while realize efficiently using for energy, be arranged outside pipe free stove steam, realization is higher to wash benzene efficiency.
Description
Technical field
The utility model is related to field of chemical equipment, a kind of particularly coking crude benzene washing oil heat-exchange system.
Background technology
Under normal circumstances, in coking crude benzene production, de- benzene distillation heat obtained by the reaction is oil-poor to be first sent to poor oil-rich heat exchanger
Heat exchange is carried out, then is further exchanged heat through oil-poor heat exchanger, oil-poor after cooling sends the sprinkling of benzene column tower top to laundry, and from washing benzene column tower
The end cold rear coal gas counter current contacting that bottom enters.It is higher due to taking off the oil-poor temperature of heat obtained after benzene distillation, and benzene efficiency is washed by poor
Oil temperature is affected, therefore heat is oil-poor could normally make after poor oil-rich heat exchanger and oil-poor heat exchanger effectively exchange heats and cool down
With.
The poor oil-rich heat exchanger employed in coking crude benzene production is usually plate heat exchanger at present, but plate heat exchanger exists
It is had the following problems during use, equipment perforation easy to aging itself, fouling are serious, and resistance is larger, and heat transfer effect is poor, after heat exchange
Oil-poor temperature is high.Higher oil-poor temperature can not only influence to wash benzene efficiency, also result in oil-poor conveying equipment reduced service life,
Oil-poor heat exchanger heat exchange pressure increases, and recirculated water, cooling water consumption increase, meanwhile, lower rich oil temperature also results in pipe
Formula stove steam consumption and amount of diffusin increase, and washing oil moisture content increases, and system energy consumption increases.
Utility model content
In order to make heat that de- benzene distillation obtains it is oil-poor can effective temperature-reducing, the utility model provides a kind of coking crude benzene and washes
Oily heat-exchange system is replaced existing lean and fat oil using doublet redistribution formula heat exchanger in the coking crude benzene washing oil heat-exchange system and is changed
Hot device, doublet redistribution formula heat exchanger have compact-sized, classification heat exchange, oil-poor redistribution, should not block, heat transfer coefficient
Height, heatproof, it is resistance to press, the features such as corrosion protection abrasion resistant is strong.The coking crude benzene washing oil heat-exchange system can realize that crude benzol distillation heat is oil-poor
Effective temperature-reducing, while realizing efficiently using for energy, arranged outside pipe free stove steam, realize and higher washes benzene efficiency.
Technical solution adopted by the utility model to solve its technical problems is：A kind of coking crude benzene washing oil heat-exchange system,
Including oil gas heat exchanger, doublet redistribution formula heat exchanger, tube furnace and debenzolizing tower, doublet redistribution formula heat exchanger contains one
Grade poor oil-rich heat exchanger, oil-poor redistributor and two level poor oil-rich heat exchanger, the oil rich outlet and level-one of oil gas heat exchanger are rich or poor
The rich oil entrance of oil heat exchanger is connected with the rich oil entrance of two level poor oil-rich heat exchanger, the oil-poor entrance of level-one poor oil-rich heat exchanger
It is connected with the bottom of tower discharge port of debenzolizing tower, the oil-poor outlet of level-one poor oil-rich heat exchanger and the feed inlet phase of oil-poor redistributor
Even, the discharge port of oil-poor redistributor is connected with the oil-poor entrance of two level poor oil-rich heat exchanger, two level poor oil-rich heat exchanger it is poor
Oil export is connected with the bottom of tower oil groove of debenzolizing tower, the richness of the oil rich outlet and two level poor oil-rich heat exchanger of level-one poor oil-rich heat exchanger
Oil export is connected with the rich oil entrance of tube furnace.
Level-one poor oil-rich heat exchanger is located at the top of oil-poor redistributor, and two level poor oil-rich heat exchanger is located at oil-poor redistribution
The lower section of device.
The oil-poor entrance of level-one poor oil-rich heat exchanger is located at the bottom of level-one poor oil-rich heat exchanger, level-one poor oil-rich heat exchanger
Oil-poor outlet be located at the top of level-one poor oil-rich heat exchanger.
The rich oil entrance of level-one poor oil-rich heat exchanger is located at the right side of level-one poor oil-rich heat exchanger, level-one poor oil-rich heat exchanger
Oil rich outlet be located at the left side of level-one poor oil-rich heat exchanger.
The oil-poor entrance of two level poor oil-rich heat exchanger is located at the bottom of two level poor oil-rich heat exchanger, two level poor oil-rich heat exchanger
Oil-poor outlet be located at the top of two level poor oil-rich heat exchanger.
The rich oil entrance of two level poor oil-rich heat exchanger is located at the right side of two level poor oil-rich heat exchanger, two level poor oil-rich heat exchanger
Oil rich outlet be located at the left side of two level poor oil-rich heat exchanger.
The feed inlet of oil-poor redistributor is located at the bottom of oil-poor redistributor, and the discharge port of oil-poor redistributor is positioned at poor
The top of oily redistributor.
The oil rich outlet of tube furnace is connected with the rich oil entrance of debenzolizing tower, and the rich oil entrance of debenzolizing tower is located at a left side for debenzolizing tower
Side.
The coking crude benzene washing oil heat-exchange system further includes washing benzene column, washes the oil rich outlet of benzene column and the richness of oil gas heat exchanger
Oil-in is connected.
The coking crude benzene washing oil heat-exchange system further includes oil-poor cooler, the oil-poor outlet of oil-poor cooler and washes benzene column
Oil-poor entrance be connected, the oil-poor outlet of the bottom of tower oil groove of debenzolizing tower is connected with the oil-poor entrance of oil-poor cooler.
The utility model has the beneficial effects that：
1, effective recycling of the oil-poor thermal energy of heat can be achieved, reduce oil-poor temperature after heat exchange；
2, elution benzene efficiency can be effectively improved, gas blending amount reduces after realizing tower；
3, oil-poor conveying equipment efficient stable operation can be achieved, the attachmentes service life such as equipment machine envelope extends；
4, recirculated water and cooling water consumption needed for oil-poor heat exchanger, which can be achieved, to be reduced；
5, rich oil can be achieved effectively to heat up, realizes that tube furnace gas consumption amount reduces, steam consumption and amount of diffusin reduce.
Description of the drawings
The accompanying drawings which form a part of this application are used to provide a further understanding of the present invention, this practicality
Novel illustrative embodiments and their description are not constituted improper limits to the present invention for explaining the utility model.
Fig. 1 is the structural schematic diagram of coking crude benzene washing oil heat-exchange system described in the utility model.
1, doublet redistributes formula heat exchanger；2, debenzolizing tower；3, bottom of tower oil groove；4, tube furnace；5, oil gas heat exchanger；6, poor
Oil cooler；7, benzene column is washed；8, level-one poor oil-rich heat exchanger；9, oil-poor redistributor；10, two level poor oil-rich heat exchanger.
Specific implementation mode
It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can phase
Mutually combination.The utility model will be described in detail below with reference to the accompanying drawings and embodiments.
A kind of coking crude benzene washing oil heat-exchange system, including oil gas heat exchanger 5, doublet redistribution formula heat exchanger 1, tube furnace
4 and debenzolizing tower 2, it is rich or poor containing level-one poor oil-rich heat exchanger 8, oil-poor redistributor 9 and two level that doublet redistributes formula heat exchanger 1
Oil heat exchanger 10, the oil rich outlet of oil gas heat exchanger 5 exchange heat with the rich oil entrance of level-one poor oil-rich heat exchanger 8 and two level lean and fat oil
The rich oil entrance of device 10 is connected, and the oil-poor entrance of level-one poor oil-rich heat exchanger 8 is connected with the bottom of tower discharge port of debenzolizing tower 2, level-one
The oil-poor outlet of poor oil-rich heat exchanger 8 is connected with the feed inlet of oil-poor redistributor 9, the discharge port of oil-poor redistributor 9 and two
The oil-poor entrance of grade poor oil-rich heat exchanger 10 is connected, the oil-poor outlet of two level poor oil-rich heat exchanger 10 and the bottom of tower oil of debenzolizing tower 2
Slot 3 is connected, the oil rich outlet of level-one poor oil-rich heat exchanger 8 and the oil rich outlet of two level poor oil-rich heat exchanger 10 with tube furnace 4
Rich oil entrance be connected, as shown in Figure 1.
Existing commercial product may be used in level-one poor oil-rich heat exchanger 8 and two level poor oil-rich heat exchanger 10, can will make
The device to exchange heat between two kinds of fluids can as in the utility model level-one poor oil-rich heat exchanger 8 and two level lean and fat oil change
Hot device 10 uses.Oil-poor redistributor 9 can be existing liquid re-distributor.
In the present embodiment, level-one poor oil-rich heat exchanger 8 is located at the top of oil-poor redistributor 9, the heat exchange of two level lean and fat oil
Device 10 is located at the lower section of oil-poor redistributor 9.The oil-poor entrance of level-one poor oil-rich heat exchanger 8 is located at level-one poor oil-rich heat exchanger 8
Bottom, the oil-poor outlet of level-one poor oil-rich heat exchanger 8 is located at the top of level-one poor oil-rich heat exchanger 8.Level-one lean and fat oil exchanges heat
The rich oil entrance of device 8 is located at the right side of level-one poor oil-rich heat exchanger 8, and the oil rich outlet of level-one poor oil-rich heat exchanger 8 is located at level-one
The left side of poor oil-rich heat exchanger 8.The oil-poor entrance of two level poor oil-rich heat exchanger 10 is located at the bottom of two level poor oil-rich heat exchanger 10,
The oil-poor outlet of two level poor oil-rich heat exchanger 10 is located at the top of two level poor oil-rich heat exchanger 10.Two level poor oil-rich heat exchanger 10
Rich oil entrance is located at the right side of two level poor oil-rich heat exchanger 10, and it is rich or poor that the oil rich outlet of two level poor oil-rich heat exchanger 10 is located at two level
The left side of oil heat exchanger 10.The feed inlet of oil-poor redistributor 9 is located at the bottom of oil-poor redistributor 9, oil-poor redistributor 9
Discharge port is located at the top of oil-poor redistributor 9, as shown in Figure 1.
In the present embodiment, the oil rich outlet of tube furnace 4 is connected with the rich oil entrance of debenzolizing tower 2, and the rich oil of debenzolizing tower 2 enters
Mouth is located at the left side of debenzolizing tower 2.The coking crude benzene washing oil heat-exchange system further includes washing benzene column 7 and oil-poor cooler 6, washes benzene column
7 oil rich outlet is connected with the rich oil entrance of oil gas heat exchanger 5.The oil-poor outlet of oil-poor cooler 6 with wash benzene column 7 it is oil-poor enter
Mouth is connected, and the oil-poor outlet of the bottom of tower oil groove 3 of debenzolizing tower 2 is connected with the oil-poor entrance of oil-poor cooler 6.
Specifically, the bottom inlet of the level-one poor oil-rich heat exchanger 8 is connected with the bottom of tower discharge port of the debenzolizing tower 2,
The oil-poor outlet in top of the level-one poor oil-rich heat exchanger 8 is connected with the bottom feed inlet of the oil-poor redistributor 9；Described two
The oil-poor entrance in bottom of grade poor oil-rich heat exchanger 10 is connected with the top discharge mouth of the oil-poor redistributor 9；The level-one is poor
The side rich oil entrance of rich oil heat exchanger 8 is connected with the bottom oil rich outlet of the oil gas heat exchanger 5, and the level-one lean and fat oil changes
The side oil rich outlet of hot device 8 is connected with the rich oil entrance of the tube furnace 4；The side of the two level poor oil-rich heat exchanger 10 is rich
Oil-in is connected with the bottom oil rich outlet of the oil gas heat exchanger 5, and the side rich oil of the two level poor oil-rich heat exchanger 10 goes out
Mouth is connected with the rich oil entrance of the tube furnace 4.
The effect of the doublet redistribution formula heat exchanger 1 heats cold rich oil while being that heat is oil-poor cooling.Duplex
It is mainly that the oil-poor and cold rich oil of heat carries out heat convection, the oil-poor edge of heat that body, which redistributes level-one poor oil-rich heat exchanger 8 in formula heat exchanger 1,
The bottom-up flowing in channel, rich oil are flowed along channel spiral；Oil-poor redistributor 9 is mainly to through level-one poor oil-rich heat exchanger 8
Oil-poor after heat exchange carries out mixing redistribution；Two level poor oil-rich heat exchanger 10 is mainly that the oil-poor and cold rich oil progress convection current of heat is changed
Heat, heat is oil-poor along the bottom-up flowing in channel, and rich oil is flowed along channel spiral；The oil-poor effective temperature-reducing after two-stage exchanges heat of heat,
Then gravity flow enters bottom of tower oil groove 3.
The meaning that the oil-poor outlet of above-mentioned two level poor oil-rich heat exchanger 10 is connected with the bottom of tower oil groove 3 of debenzolizing tower 2 includes：Two
The oil-poor of oil-poor outlet discharge of grade poor oil-rich heat exchanger 10 can flow into bottom of tower oil groove 3 and two level poor oil-rich heat exchanger 10
Oil-poor outlet and the bottom of tower oil groove 3 of debenzolizing tower 2 be directly connected to by pipeline.
The oil rich outlet of the tube furnace 4 is connected with the rich oil entrance of the debenzolizing tower 2；The bottom of tower oil groove 3 it is oil-poor
Outlet is connected with the oil-poor entrance of the oil-poor cooler 6；The oil-poor outlet of the oil-poor cooler 6 and the benzene column 7 of washing
Oil-poor entrance is connected；The oil rich outlet for washing benzene column 7 is connected with the rich oil entrance of the oil gas heat exchanger 5.
The device used in the utility model all can be existing apparatus, the utility model changes existing coking crude benzene washing oil
Hot equipment Central Plains panel cooler is changed to doublet redistribution formula heat exchanger, allows rich oil entering while reducing oil-poor temperature
Effective heating has also been obtained before tube furnace, doublet redistribution formula efficiency of heat exchanger has been which thereby enhanced, reduces energy consumption, carry
High crude benzol recovery rate.
The course of work of coking crude benzene washing oil heat-exchange system described in the utility model is as follows：
1, it is oil-poor to obtain heat in debenzolizing tower 2 by distillation for rich oil；
2, the heat is oil-poor by oil-poor pipeline, and the level-one that gravity flow enters 1 lower part of doublet redistribution formula heat exchanger is rich or poor
The entrance of oil heat exchanger 8 carries out heat exchange with cold rich oil；
3, the heat after the heat exchange of level-one lean and fat oil is oil-poor, and bottom-up gravity flow enters doublet redistribution formula heat exchanger 1
The oil-poor redistributor 9 at middle part；
4, the heat after the distribution of oil-poor redistributor 9 is oil-poor, and bottom-up gravity flow enters doublet redistribution formula heat exchange
The two level poor oil-rich heat exchanger 10 on 1 top of device carries out heat exchange with cold rich oil；
5, the heat after the heat exchange of two level lean and fat oil is oil-poor, flow back into the bottom of tower oil groove 3 of debenzolizing tower 2 certainly；
6, the heat for flowing back into bottom of tower oil groove 3 certainly is oil-poor, oil-poor cooler 6 is delivered to through oil-poor pump, with recirculated water, chilled water
Heat exchange；
7, exchange heat after it is oil-poor send to laundry benzene column 7 carry out tower top sprinkling, with from wash benzene column bottom of tower enter end it is cold after coal gas it is inverse
Stream contact, absorbs the benzene homologues in coal gas；
8, the cold rich oil and two level lean and fat oil after the level-one lean and fat oil heat exchange of doublet redistribution formula heat exchanger 1 changes
Cold rich oil after heat, is mixed after heat exchanger exit；
9, above-mentioned mixed cold rich oil is sent to tube furnace 4, the heating in tube furnace 4；
10, the above-mentioned rich oil in tube furnace 4 after heating is sent to debenzolizing tower 2 and carries out distillation reaction.
The above, only specific embodiment of the utility model cannot limit the range that utility model is implemented, institute with it
With the displacement of its equivalent assemblies, or according to equivalent variations made by the utility model patent protection domain and modification, should all still fall within
The scope that this patent is covered.In addition, between technical characteristic and technical characteristic in the utility model, technical characteristic and technical solution
Between, between technical solution and technical solution use can be freely combined.
Claims (10)
1. a kind of coking crude benzene washing oil heat-exchange system, which is characterized in that the coking crude benzene washing oil heat-exchange system includes that oil gas changes
Hot device (5), doublet redistribution formula heat exchanger (1), tube furnace (4) and debenzolizing tower (2), doublet redistribute formula heat exchanger (1)
Containing level-one poor oil-rich heat exchanger (8), oil-poor redistributor (9) and two level poor oil-rich heat exchanger (10), oil gas heat exchanger (5)
Oil rich outlet is connected with the rich oil entrance of the rich oil entrance of level-one poor oil-rich heat exchanger (8) and two level poor oil-rich heat exchanger (10),
The oil-poor entrance of level-one poor oil-rich heat exchanger (8) is connected with the bottom of tower discharge port of debenzolizing tower (2), level-one poor oil-rich heat exchanger (8)
Oil-poor outlet be connected with the feed inlet of oil-poor redistributor (9), the discharge port of oil-poor redistributor (9) is changed with two level lean and fat oil
The oil-poor entrance of hot device (10) is connected, the oil-poor outlet of two level poor oil-rich heat exchanger (10) and the bottom of tower oil groove (3) of debenzolizing tower (2)
It is connected, the oil rich outlet of level-one poor oil-rich heat exchanger (8) and the oil rich outlet of two level poor oil-rich heat exchanger (10) are and tube furnace
(4) rich oil entrance is connected.
2. coking crude benzene washing oil heat-exchange system according to claim 1, which is characterized in that level-one poor oil-rich heat exchanger (8)
Top positioned at oil-poor redistributor (9), two level poor oil-rich heat exchanger (10) are located at the lower section of oil-poor redistributor (9).
3. coking crude benzene washing oil heat-exchange system according to claim 2, which is characterized in that level-one poor oil-rich heat exchanger (8)
Oil-poor entrance be located at the bottom of level-one poor oil-rich heat exchanger (8), the oil-poor outlet of level-one poor oil-rich heat exchanger (8) is located at level-one
The top of poor oil-rich heat exchanger (8).
4. coking crude benzene washing oil heat-exchange system according to claim 2, which is characterized in that level-one poor oil-rich heat exchanger (8)
Rich oil entrance be located at the right side of level-one poor oil-rich heat exchanger (8), the oil rich outlet of level-one poor oil-rich heat exchanger (8) is located at level-one
The left side of poor oil-rich heat exchanger (8).
5. coking crude benzene washing oil heat-exchange system according to claim 2, which is characterized in that two level poor oil-rich heat exchanger (10)
Oil-poor entrance be located at the bottom of two level poor oil-rich heat exchanger (10), the oil-poor outlet of two level poor oil-rich heat exchanger (10) is located at two
The top of grade poor oil-rich heat exchanger (10).
6. coking crude benzene washing oil heat-exchange system according to claim 2, which is characterized in that two level poor oil-rich heat exchanger (10)
Rich oil entrance be located at the right side of two level poor oil-rich heat exchanger (10), the oil rich outlet of two level poor oil-rich heat exchanger (10) is located at two
The left side of grade poor oil-rich heat exchanger (10).
7. coking crude benzene washing oil heat-exchange system according to claim 2, which is characterized in that oil-poor redistributor (9) into
Material mouth is located at the bottom of oil-poor redistributor (9), and the discharge port of oil-poor redistributor (9) is located at the top of oil-poor redistributor (9)
Portion.
8. coking crude benzene washing oil heat-exchange system according to claim 1, which is characterized in that the oil rich outlet of tube furnace (4)
It is connected with the rich oil entrance of debenzolizing tower (2), the rich oil entrance of debenzolizing tower (2) is located at the left side of debenzolizing tower (2).
9. coking crude benzene washing oil heat-exchange system according to claim 1, which is characterized in that the coking crude benzene washing oil heat exchange
System further includes washing benzene column (7), and the oil rich outlet for washing benzene column (7) is connected with the rich oil entrance of oil gas heat exchanger (5).
10. coking crude benzene washing oil heat-exchange system according to claim 9, which is characterized in that the coking crude benzene washing oil changes
Hot systems further include oil-poor cooler (6), and the oil-poor outlet of oil-poor cooler (6) is connected with the oil-poor entrance for washing benzene column (7), are taken off
The oil-poor outlet of the bottom of tower oil groove (3) of benzene column (2) is connected with the oil-poor entrance of oil-poor cooler (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721675375.3U CN207713685U (en) | 2017-12-05 | 2017-12-05 | A kind of coking crude benzene washing oil heat-exchange system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721675375.3U CN207713685U (en) | 2017-12-05 | 2017-12-05 | A kind of coking crude benzene washing oil heat-exchange system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207713685U true CN207713685U (en) | 2018-08-10 |
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ID=63059677
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721675375.3U Active CN207713685U (en) | 2017-12-05 | 2017-12-05 | A kind of coking crude benzene washing oil heat-exchange system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207713685U (en) |
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2017
- 2017-12-05 CN CN201721675375.3U patent/CN207713685U/en active Active
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