CN206538361U - Crude benzol feedstock pre-processing system - Google Patents
Crude benzol feedstock pre-processing system Download PDFInfo
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- CN206538361U CN206538361U CN201621494064.2U CN201621494064U CN206538361U CN 206538361 U CN206538361 U CN 206538361U CN 201621494064 U CN201621494064 U CN 201621494064U CN 206538361 U CN206538361 U CN 206538361U
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- heat exchanger
- thermal source
- vacuum distillation
- pipeline
- tower
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Abstract
The utility model discloses a kind of crude benzol feedstock pre-processing system, the input channel of crude benzol is inputted including vacuum distillation tower, return tank, into vacuum distillation tower, and at least include First Heat Exchanger, the second heat exchanger, the input channel has been respectively communicated with the first pipeline, second pipe, and the inlet control valve for controlling that crude benzol circulates in respective pipeline is respectively fitted with the first pipeline, second pipe；First pipeline is connected with the media inlet end of First Heat Exchanger, and the medium outlet side of First Heat Exchanger is connected with the input formation of vacuum distillation tower.Second pipe is connected with the media inlet end of the second heat exchanger, and the medium outlet side of the second heat exchanger is connected with the input formation of vacuum distillation tower；The utility model does not influence device load, plant running is steady in switching cleaning heat exchanger, in switching cleaning heat exchanger, it is not necessary to increase thermal source in addition, reduce the energy consumption of device.
Description
Technical field
The utility model is related to a kind of crude benzol feedstock pre-processing system.
Background technology
Crude benzol is one of the product in the raw gas of pyrolysis of coal generation, the benzene series reclaimed in the coke-stove gas after deamination
Compound, wherein based on benzene content, referred to as crude benzol.Crude benzol is one of the product in the raw gas of pyrolysis of coal generation.Due to thick
Benzene is dirtier, and comparison of ingredients is complicated, under heating state, is easier coking polymerization；At present when being pre-processed to crude benzol, it is
Crude benzol is avoided to carry out coking polymerization, using addition polymerization inhibitor, but polymerization inhibitor is only capable of the time of extension polymerization, and can not grow
Time reaches inhibition purpose, thus in processing procedure, crude benzol can still produce coking polymerization in the processing system, so as to need
Often processing system is cleaned, and due to the defect of current processing system structure design, when being cleaned to system, needed
Whole processing system is stopped, cause processing system not run normally, reduce treatment effeciency and add processing into
This.
Utility model content
For above-mentioned technical problem, the purpose of this utility model is to provide a kind of reasonable in design, it is not necessary to which parking is just
It can be cleaned, be lifted the crude benzol feedstock pre-processing system for the treatment of effeciency.
Realize that the technical solution of the utility model is as follows：
Crude benzol feedstock pre-processing system, including vacuum distillation tower, return tank, into vacuum distillation tower input crude benzol input
Pipeline, and at least including First Heat Exchanger, the second heat exchanger,
The input channel has been respectively communicated with the first pipeline, second pipe, is assembled respectively on the first pipeline, second pipe
There is the inlet control valve for controlling that crude benzol circulates in respective pipeline；
First pipeline is connected with the media inlet end of First Heat Exchanger, medium outlet side and the decompression of First Heat Exchanger
The input formation connection of destilling tower；Second pipe is connected with the media inlet end of the second heat exchanger, the medium of the second heat exchanger
Outlet side is connected with the input formation of vacuum distillation tower；The thermal source upstream end of the First Heat Exchanger, the heat of the second heat exchanger
Source upstream end connects a thermal source supply line, the thermal source outlet side of First Heat Exchanger, the thermal source outlet side of the second heat exchanger jointly
One thermal source reflux line of common connection, in the thermal source upstream end and the heat of thermal source outlet side and the second heat exchanger of First Heat Exchanger
Source upstream end and thermal source outlet side are respectively arranged with thermal source control valve, thermal source upstream end and the thermal source discharge of the First Heat Exchanger
By-pass line is connected with respectively and in succession between end and between the thermal source upstream end and thermal source outlet side of the second heat exchanger, by this
Switching valve is equipped with threading a pipe；
Connected between the vacuum distillation top of tower and the input of return tank by the formation of the 3rd pipeline, vacuum distillation tower
Interior light component is from the 3rd pipeline enters return tank, and the outlet side of return tank passes through the 4th pipeline and vacuum distillation top of tower
Side forms connection；The bottom of the vacuum distillation tower is provided with the discharge line for heavy constituent discharge in tower.
Preferably, the light component in being provided with the 3rd pipeline to entering return tank from vacuum distillation top of tower is carried out
The condenser of liquid is cooled to, and the 4th pipeline communication has delivery pump liquid in return tank being transported in vacuum distillation tower.
Preferably, the heavy constituent in vacuum distillation tower is pumped to vacuum distillation tower by the bottom connection of the vacuum distillation tower
Being provided with to be additionally provided with circulation conveying pump, the circulating line on the circulating line at middle part, circulating line makes in circulating line
Heavy constituent explosive evaporation again reboiler, heavy constituent is after reboiler again from circulating line enters vacuum distillation tower
Portion.
Above-mentioned technical proposal is employed, in the course of the work, free switching can be carried out to two heat exchangers as needed
Use, and when needing to clear up one of heat exchanger, turn off the heat exchanger, and system can be ensured by opening another heat exchanger
Normal operation, without whole system is stopped, causes processing system not run normally, lifts treatment effeciency.This
Utility model does not influence device load, plant running is steady in switching cleaning heat exchanger, in switching cleaning heat exchanger, no
Need to increase thermal source in addition, reduce the energy consumption of device.When clearing up heat exchanger, 7 tons are increased by crude benzol load, by per ton 500 profits
Profit, brings benefits first for 500*7*24*3=252000, annual to clear up three times, annual return is 756000 yuan, it is ensured that system is just
Often productivity effect is also increased while operation.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model；
In figure：1 is vacuum distillation tower, and 2 be return tank, and 3 be input channel, and 4 be First Heat Exchanger, and 5 be the second heat exchanger,
6 be the first pipeline, and 7 be second pipe, and 8 be inlet control valve, and 9 be thermal source supply line, and 10 be thermal source reflux line, and 11 be heat
Source control valve, 12 be by-pass line, and 13 be switching valve, and 14 be the 3rd pipeline, and 15 be the 4th pipeline, and 16 be discharge line, and 17 are
Cooler, 18 be condenser, and 19 be delivery pump, and 20 be circulating line, and 21 be circulation conveying pump, and 22 be reboiler.
Embodiment
It is new below in conjunction with this practicality to make the purpose, technical scheme and advantage of the utility model embodiment clearer
The accompanying drawing of type embodiment, the technical scheme to the utility model embodiment is clearly and completely described.Obviously, it is described
Embodiment is a part of embodiment of the present utility model, rather than whole embodiments.Based on described of the present utility model
Embodiment, the every other embodiment that those of ordinary skill in the art are obtained on the premise of without creative work, all belongs to
The scope protected in the utility model.
As shown in figure 1, crude benzol feedstock pre-processing system, including it is vacuum distillation tower 1, return tank 2, defeated into vacuum distillation tower
Enter the input channel 3 of crude benzol, and First Heat Exchanger 4, the second heat exchanger 5, crude benzol is after the filtering of filter from input pipe
Road enters in vacuum distillation tower.First Heat Exchanger, the second heat exchanger can using contactless heat-exchanger rig at present, such as tubulation,
Helix tube, board-like etc. can be with.
Input channel 3 has been respectively communicated with the first pipeline 6, second pipe 7, is assembled respectively on the first pipeline, second pipe
There is the inlet control valve 8 for controlling that crude benzol circulates in respective pipeline；Two charging controls can be so switched on or off as needed
One in valve, enter in order to switch the crude benzol in input channel in First Heat Exchanger or the second heat exchanger.
First pipeline is connected with the media inlet end of First Heat Exchanger, the medium outlet side of First Heat Exchanger and vacuum distillation
The input formation connection of tower；Second pipe is connected with the media inlet end of the second heat exchanger, the medium discharge of the second heat exchanger
The input formation with vacuum distillation tower is held to connect；The thermal source upstream end of First Heat Exchanger, the thermal source upstream end of the second heat exchanger
One thermal source supply line 9 of common connection, the thermal source outlet side of First Heat Exchanger, the thermal source outlet side of the second heat exchanger are connected jointly
One thermal source reflux line 10, enters in the thermal source upstream end of First Heat Exchanger and the thermal source of thermal source outlet side and the second heat exchanger
End and thermal source outlet side be respectively arranged with thermal source control valve 11, between the thermal source upstream end and thermal source outlet side of First Heat Exchanger with
And second heat exchanger thermal source upstream end and thermal source outlet side between be connected with respectively and in succession by-pass line 12, in the by-pass line
On be equipped with switching valve 13；When First Heat Exchanger needs to be cleaned, the inlet control valve on the first pipeline of shut-off does not allow thick
Benzene enters in First Heat Exchanger, opens the inlet control valve on second pipe, crude benzol is entered in the second heat exchanger, meanwhile, the
Thermal source control valve breakdown on the thermal source upstream end and thermal source outlet side of one heat exchanger, opens thermal source upstream end and thermal source outlet side
Between switching valve on by-pass line, such thermal source will not enter in First Heat Exchanger；And the thermal source upstream end of the second heat exchanger
Opened with the thermal source control valve of thermal source outlet side, the switching valve breakdown on by-pass line so makes thermal source pass through the second heat exchanger
Carried out with entering crude benzol in heat exchanger after heat temperature raising, from thermal source reflux line is back to heat source system；Equally, it is clear when needing
When washing First Heat Exchanger, operate in turn.It should be noted that the First Heat Exchanger, the second heat exchanger in the application are adopted
With same thermal source, same heat exchange area when switching cleaning, does not influence system loading, fluctuation reduces, and plant running is put down
Surely；In addition, in switching cleaning heat exchanger, it is not necessary to increase thermal source in addition, reduce the energy consumption of system.
Connected between vacuum distillation top of tower and the input of return tank by the formation of the 3rd pipeline 14, in vacuum distillation tower
Light component from the 3rd pipeline enters return tank, the outlet side of return tank passes through the 4th pipeline 15 and vacuum distillation top of tower
Side forms connection；The bottom of vacuum distillation tower is provided with the discharge line 16 for heavy constituent discharge in tower, discharge line discharge
Heavy constituent benzene by inputting tank field after the cooling of cooler 17, in case using.Wherein, vacuum distillation tower sets for conventional
It is standby, it is on the market to use, not described here any more.In order to lift treatment effeciency and ensure the stable fortune of system
OK, the light component in being provided with the 3rd pipeline to entering return tank from vacuum distillation top of tower be cooled to the condensation of liquid
Device 18, the 4th pipeline communication has the delivery pump 19 being transported to liquid in return tank in vacuum distillation tower, to lift cycle efficieny.
The bottom connection of vacuum distillation tower pumps to the heavy constituent in vacuum distillation tower the circulation in the middle part of vacuum distillation tower
It is provided with to be additionally provided with circulation conveying pump 21, circulating line on pipeline 20, circulating line and makes heavy constituent in circulating line again
The reboiler 22 of secondary explosive evaporation, heavy constituent enters in the middle part of vacuum distillation tower from circulating line again after reboiler, is followed
Ring vacuum distillation, until the heavy benzol of discharge reaches the value of needs.
Claims (3)
1. crude benzol feedstock pre-processing system, it is characterised in that the processing system includes vacuum distillation tower, return tank, steamed to decompression
The input channel that crude benzol is inputted in tower is evaporated, and at least including First Heat Exchanger, the second heat exchanger,
The input channel has been respectively communicated with the first pipeline, second pipe, and control is respectively fitted with the first pipeline, second pipe
Make the inlet control valve that crude benzol circulates in respective pipeline；
First pipeline is connected with the media inlet end of First Heat Exchanger, the medium outlet side of First Heat Exchanger and vacuum distillation
The input formation connection of tower；Second pipe is connected with the media inlet end of the second heat exchanger, the medium discharge of the second heat exchanger
The input formation with vacuum distillation tower is held to connect；Thermal source upstream end, the thermal source of the second heat exchanger of the First Heat Exchanger enter
Enter one thermal source supply line of the common connection in end, the thermal source outlet side of First Heat Exchanger, the thermal source outlet side of the second heat exchanger are common
A thermal source reflux line is connected, is entered in the thermal source upstream end of First Heat Exchanger and the thermal source of thermal source outlet side and the second heat exchanger
Enter end and thermal source outlet side be respectively arranged with thermal source control valve, the thermal source upstream end and thermal source outlet side of the First Heat Exchanger it
Between and the thermal source upstream end and thermal source outlet side of the second heat exchanger between be connected with respectively and in succession by-pass line, in the bypass pipe
Switching valve is equipped with road；
Connected between the vacuum distillation top of tower and the input of return tank by the formation of the 3rd pipeline, in vacuum distillation tower
Light component is from the 3rd pipeline enters return tank, and the outlet side of return tank passes through the side of the 4th pipeline and vacuum distillation top of tower
Form connection；The bottom of the vacuum distillation tower is provided with the discharge line for heavy constituent discharge in tower.
2. crude benzol feedstock pre-processing system according to claim 1, it is characterised in that be provided with the 3rd pipeline pair
Into the light component in return tank be cooled to the condenser of liquid from vacuum distillation top of tower, the 4th pipeline communication, which will have, to return
Liquid is transported to the delivery pump in vacuum distillation tower in stream tank.
3. crude benzol feedstock pre-processing system according to claim 1, it is characterised in that the bottom of the vacuum distillation tower connects
To be provided with circulation defeated on the logical circulating line heavy constituent in vacuum distillation tower pumped in the middle part of vacuum distillation tower, circulating line
Send to be additionally provided with pump, the circulating line and make the reboiler of heavy constituent in circulating line explosive evaporation again, recombinate lease making
Cross after reboiler and enter again from circulating line in the middle part of vacuum distillation tower.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621494064.2U CN206538361U (en) | 2016-12-30 | 2016-12-30 | Crude benzol feedstock pre-processing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621494064.2U CN206538361U (en) | 2016-12-30 | 2016-12-30 | Crude benzol feedstock pre-processing system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206538361U true CN206538361U (en) | 2017-10-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621494064.2U Active CN206538361U (en) | 2016-12-30 | 2016-12-30 | Crude benzol feedstock pre-processing system |
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| CN (1) | CN206538361U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109925738A (en) * | 2019-04-19 | 2019-06-25 | 临涣焦化股份有限公司 | It is a kind of to evaporate tower automatic cleaning system in advance |
-
2016
- 2016-12-30 CN CN201621494064.2U patent/CN206538361U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109925738A (en) * | 2019-04-19 | 2019-06-25 | 临涣焦化股份有限公司 | It is a kind of to evaporate tower automatic cleaning system in advance |
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