CN107721807A - A kind of device and method for solving the polymerization of styrene tail-gas compressor section and blocking - Google Patents
A kind of device and method for solving the polymerization of styrene tail-gas compressor section and blocking Download PDFInfo
- Publication number
- CN107721807A CN107721807A CN201710956904.5A CN201710956904A CN107721807A CN 107721807 A CN107721807 A CN 107721807A CN 201710956904 A CN201710956904 A CN 201710956904A CN 107721807 A CN107721807 A CN 107721807A
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- CN
- China
- Prior art keywords
- pipeline
- gas
- tail
- compressor
- styrene
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 title claims abstract description 130
- 238000006116 polymerization reaction Methods 0.000 title claims abstract description 28
- 238000000034 method Methods 0.000 title claims abstract description 24
- 230000000903 blocking effect Effects 0.000 title claims abstract description 19
- 239000007788 liquid Substances 0.000 claims abstract description 60
- 238000000926 separation method Methods 0.000 claims abstract description 46
- 238000001816 cooling Methods 0.000 claims abstract description 29
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 19
- 238000001914 filtration Methods 0.000 claims description 5
- 230000007774 longterm Effects 0.000 abstract description 8
- 230000006835 compression Effects 0.000 abstract description 4
- 238000007906 compression Methods 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 abstract description 4
- 235000008733 Citrus aurantifolia Nutrition 0.000 abstract description 3
- 235000011941 Tilia x europaea Nutrition 0.000 abstract description 3
- 238000005265 energy consumption Methods 0.000 abstract description 3
- 239000004571 lime Substances 0.000 abstract description 3
- 239000000126 substance Substances 0.000 abstract description 3
- YNQLUTRBYVCPMQ-UHFFFAOYSA-N Ethylbenzene Chemical compound CCC1=CC=CC=C1 YNQLUTRBYVCPMQ-UHFFFAOYSA-N 0.000 description 10
- 238000006356 dehydrogenation reaction Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- -1 alkenyl hydrocarbon Chemical class 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 3
- 229930195733 hydrocarbon Natural products 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 150000001336 alkenes Chemical class 0.000 description 2
- 239000000110 cooling liquid Substances 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 239000002455 scale inhibitor Substances 0.000 description 2
- JLBJTVDPSNHSKJ-UHFFFAOYSA-N 4-Methylstyrene Chemical compound CC1=CC=C(C=C)C=C1 JLBJTVDPSNHSKJ-UHFFFAOYSA-N 0.000 description 1
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- 125000000217 alkyl group Chemical group 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C5/00—Preparation of hydrocarbons from hydrocarbons containing the same number of carbon atoms
- C07C5/32—Preparation of hydrocarbons from hydrocarbons containing the same number of carbon atoms by dehydrogenation with formation of free hydrogen
- C07C5/327—Formation of non-aromatic carbon-to-carbon double bonds only
Abstract
The invention discloses a kind of device and method for solving the polymerization of styrene tail-gas compressor section and blocking, belong to chemical technology field.Its mainly solve styrene tail-gas compressor section in the prior art easily occur polymerization block this technical problem.It includes aftercooler, suction port of compressor cooler, compressor suction tank, tail-gas compressor, liquid separation tank and exhaust gas cooler.Styrene tail gas through aftercooler cooling enters suction port of compressor cooler and carries out deep cooling, lime set after cooling enters oil water separator, styrene tail gas after deep cooling enters compressor suction tank, further separate the condensate liquid that tail gas carries, styrene tail gas after de- liquid enters tail-gas compressor, styrene tail gas after compression enters liquid separation tank, and the styrene tail gas after liquid separation enters exhaust gas cooler, and the liquid in liquid separation tank enters oil water separator.The invention can ensure that device long-term operation, has reached the influence for solving compressor section polymerization in the case where reducing plant energy consumption to device long-term operation.
Description
Technical field
The present invention relates to chemical technology field, and in particular to one kind effectively low cost can solve styrene tail-gas compressor
The device and method that Duan Juhe is blocked.
Background technology
Styrene is a kind of important Organic Chemicals, and most domestic uses ethyl benzene dehydrogenation preparation of styrene
Technique productions styrene.Styrene is easily especially sent out as a kind of extremely active monomer in the case where temperature is higher
Raw polymerization.During dehydrogenation of ethylbenzene to styrene, dehydrogenation reaction generation dehydrogenated tail gas in containing a small amount of styrene, α-
The easily olefin polymerization material such as methyl styrene, its temperature after tail-gas compressor compresses can be raised significantly, easily in tail gas pressure
The equipment such as contracting machine entrance, tail-gas compressor and its outlet line form polymer, occluding device pipeline, cause tail-gas compressor to go out
Mouth pressure rise, plant energy consumption increase, and have a strong impact on the long-term operation of styrene device.
At present, during production of styrene, the injection ethylbenzene such as compressor gateway pipeline, unit is taken to carry out ethylbenzene punching
The method with compressor filling antisludging agent is washed, to solve the problems, such as that tail gas compression machine equipment and pipeline polymerization block.Prior art
In on add antisludging agent technology report have：CN101700991A discloses a kind of tail-gas compressor of styrene device and efficiently hindered
Dirty agent and its application method, it is caught by injecting efficient scale inhibitor in tail-gas compressor suction line by efficient scale inhibitor
Caused alkyl diradical and peroxy radical in tail gas, and lose it and trigger the step such as activity of ripple alkene autohemagglutination living in tail gas
Rapid solve the polymerization blockage problem of compressor apparatus.
But the former is simply rinsed and dissolved to styrene and polymer with ethylbenzene, by shadows such as device produce loads
Sound is larger, the problem of effect is unsatisfactory in actual motion be present；The latter has that cost is high, heavy-polluted problem.
The content of the invention
One of task of the present invention is to provide a kind of device for solving the polymerization of styrene tail-gas compressor section and blocking, the dress
It is set to that low, effect is good and can guarantee that long-term operation, is polluted in actual motion small.
Its technical solution includes：
A kind of device for solving the polymerization of styrene tail-gas compressor section and blocking, it includes aftercooler, compressor suction tank, tail
Air compressor, liquid separation tank and exhaust gas cooler, the aftercooler tube side bottom set pipeline B, the pipeline B to be connected to profit point
From device, the outlet of the compressor suction tank is provided with pipeline E, and the pipeline E connects with the tail-gas compressor, the tail gas
The outlet of compressor is provided with pipeline F, and the pipeline F is connected with liquid separation tank；
Pipeline G is connected between the liquid separation tank top and the exhaust gas cooler；
Described device also includes suction port of compressor cooler, is connected between the aftercooler and suction port of compressor cooler
Pipeline A, the two keeps connecting by the pipeline A；The suction port of compressor cooler tube side is provided with pipeline D, the pipeline D
Connected with the compressor suction tank；The suction port of compressor cooler tube side bottom is provided with pipeline C, the pipeline B and pipe
Line C is collected to connected entrance A；
The outlet of the liquid separation pot bottom sets pipeline H to oil water separator.
Preferably, the pipeline H entrances are provided with filter to one as the present invention.
Another as the present invention is preferred, and the filter includes filter A and filter B, the filter A and mistake
Filter B is provided with cross-line I in connection side by side, the filter A tops.
Another task of the present invention is to provide a kind of method for solving the polymerization of styrene tail-gas compressor section and blocking.
A kind of method for solving the polymerization of styrene tail-gas compressor section and blocking, it is described using the device described in claim 1
Method comprises the following steps successively：
Styrene tail gas is passed through suction port of compressor cooler after aftercooler cools down, through pipeline A and carries out deep cooling, after deep cooling
Liquid by pipeline C to connected entrance A, then again through pipeline B to oil water separator, the gas phase after deep cooling enters through pipeline D
Liquid separation in compressor suction tank；
Gas phase after compressor suction tank liquid separation enters tail-gas compressor by pipeline E, after tail-gas compressor compresses
Enter liquid separation tank through pipeline F；
Tail gas after the separation of liquid separation tank enters exhaust gas cooler through pipeline G, and the liquid through line H separated through liquid separation tank is gone
Oil water separator.
The above-mentioned liquid after exhaust gas cooler cools down is directly entered oil water separator.
A kind of method for solving the polymerization of styrene tail-gas compressor section and blocking, using the device described in Claims 2 or 3,
Methods described comprises the following steps successively：
Styrene tail gas is passed through suction port of compressor cooler after aftercooler cools down, through pipeline A and carries out deep cooling, after deep cooling
Liquid by pipeline C to connected entrance A, then again through pipeline B to oil water separator, the gas phase after deep cooling enters through pipeline D
Liquid separation in compressor suction tank；
Gas phase after compressor suction tank liquid separation enters tail-gas compressor by pipeline E, after tail-gas compressor compresses
Enter liquid separation tank through pipeline F；
Tail gas after the separation of liquid separation tank enters exhaust gas cooler VI through pipeline G, the liquid through line H separated through liquid separation tank
Into filter A or/and filter B, oil water separator is removed after filtering.
Further, gas phase Wen Du≤20 DEG C after deep cooling.
Further, gas phase Wen Du≤20 DEG C after deep cooling.
Further, gas phase Wen Du≤15 DEG C after deep cooling.
Advantageous effects are caused by the present invention：
Before styrene tail gas enters tail-gas compressor IV, by the easily polymerizable alkenyl hydrocarbon such as styrene in styrene tail gas
Matter content is reduced to the tolerance interval for meeting device long-term operation, by the easily polymerizable alkenyl hydro carbons of styrene etc. in the compressor way of escape
For the high slim pipe diameter of content of material that can ensure device long-term operation by way of Hand scarf, having reached is reducing plant energy consumption
In the case of solve compressor section and polymerize influence to device long-play.
Brief description of the drawings
The present invention will be further described below in conjunction with the accompanying drawings：
Fig. 1 is the structural representation of original (prior art) styrene compressor section device；
Fig. 2 is the structural representation that the present invention solves the device that the polymerization of styrene tail-gas compressor section blocks；
Fig. 3 is that the present invention solves the process chart that the polymerization of styrene tail-gas compressor section blocks；
Wherein：I, aftercooler, II, suction port of compressor cooler, III, compressor suction tank, IV, tail-gas compressor, V, divide
Flow container, VI, exhaust gas cooler, VII, filter A, VIII, filter B, 1, pipeline A, 2, pipeline B, 3, pipeline C, 4, pipeline D,
5th, pipeline E, 6, pipeline F, 7, pipeline G, 8, pipeline H, 9, pipeline I, 10, oil water separator, 001, connected entrance A, 002, control valve
A。
Embodiment
The present invention proposes a kind of device and method for solving the polymerization of styrene tail-gas compressor section and blocking, in order that this hair
The advantages of bright, technical scheme, it is more explicit, the present invention is elaborated with reference to specific embodiment.
1,2,3,4 ... 9 in the pipeline A1 that occurs in following embodiments, pipeline B2, pipeline C3, pipeline D4 ... pipelines I9 are
Represent reference (reference in accompanying drawing 2).
As shown in Fig. 2 a kind of device for solving the polymerization of styrene tail-gas compressor section and blocking of the present invention, it includes aftercooler
I, suction port of compressor cooler II, compressor suction tank III, tail-gas compressor IV, liquid separation tank V and exhaust gas cooler VI are rear cold
Device I tube sides bottom sets pipeline B2, pipeline B2 to be connected to oil water separator 10, aftercooler I and suction port of compressor cooler II it
Between be connected with pipeline A1, the two pass through pipeline A1 keep connection；Suction port of compressor cooler II tube sides are provided with pipeline D4, pipeline
D4 and compressor suction tank III is connected；Suction port of compressor cooler II tube sides bottom is provided with pipeline C3, pipeline B2 and pipeline C3
It is collected to connected entrance A001；Compressor suction tank III outlets are provided with pipeline E5, and pipeline E5 connects with tail-gas compressor IV, tail
Air compressor IV outlets are provided with pipeline F6, and pipeline F6 is connected with liquid separation tank V；At the top of liquid separation tank V with exhaust gas cooler VI it
Between be connected with pipeline G7；Liquid separation tank V outlets set pipeline H8 to oil water separator 10.
Preferably, pipeline H8 entrances are provided with filter.More preferably, the filter is by the filter that connects side by side
AVII and filter B VIII compositions, cross-line I9 is provided with above filter A, control valve 002 is installed on pipeline H8, is passed through
Filter differential pressure is observed, when being unsatisfactory for requiring, switch filtering device A or B, it cleared up, control valve 002 is easy to
Filter is switched over.
As shown in figure 3, a kind of technique for solving the polymerization of tail-gas compressor of styrene device section and blocking, is comprised the following steps that:
The first step, the styrene tail gas through aftercooler cooling enter suction port of compressor cooler II through pipeline A1 to be carried out deeply
Cold, the lime set of cooling enters oil water separator by pipeline B and pipeline C, and the styrene tail gas after deep cooling enters through pipeline D to be compressed
Machine suction tank, the condensate liquid that tail gas carries further is separated, take off the styrene tail gas after liquid and tail gas compression is entered by pipeline E
Machine, the styrene tail gas after compression enter liquid separation tank through pipeline F, and the styrene tail gas after liquid separation is cold into tail gas by pipeline G
But device, the liquid in liquid separation tank then enter oil water separator through pipeline H；
Second step, when the styrene exhaust temperature after deep cooling is unsatisfactory for operation and required, entered by adjusting compressor
Mouthful cooler load gradually reduces temperature after the deep cooling of styrene tail gas；
3rd step, filter differential pressure is observed, when being unsatisfactory for requiring, switch filtering device, it cleared up.
Note：The controlling value that styrene exhaust temperature operation after deep cooling requires is temperature≤20 DEG C, preferable temperature≤15 DEG C,
Suction port of compressor cooler load is adjusted, the material of adjustment is cooling medium of the temperature between 5~20 DEG C.
Apparatus of the present invention compared to Figure 1 compared with, by set suction port of compressor cooler to styrene tail gas carry out deep cooling, can
The easily polymerizable alkenyl hydro carbons content of material such as styrene in styrene tail gas is reduced to and meets the acceptable of device long-term operation
Scope.
The present invention is elaborated with reference to specific embodiment.
By taking 8.5 ten thousand tons/year of Styrene Process as an example, long period technique productions step is as follows：
Step 1: the styrene tail gas through aftercooler cooling enters suction port of compressor cooler through pipeline A carries out deep cooling, it is cold
But lime set enters oil water separator by pipeline B and pipeline C, and the styrene tail gas after deep cooling is inhaled through pipeline D into compressor
Enter tank, further separate the condensate liquid that tail gas carries, take off the styrene tail gas after liquid and tail-gas compressor is entered by pipeline E, press
Styrene tail gas after contracting enters liquid separation tank through pipeline F, and the styrene tail gas after liquid separation enters exhaust gas cooler by pipeline G,
Liquid in liquid separation tank then enters oil water separator through pipeline H；
Step 2: temperature≤20 DEG C of styrene tail gas after deep cooling are maintained by adjusting suction port of compressor cooler load,
≤ 15 DEG C of optimization；
Step 3: according to dehydrogenation reaction pressure, adjustment tail-gas compressor rotating speed etc., ensure dehydrogenation reaction pressure stability；
Step 4: dividing liquid level of tank by control valve A adjustment, level stability is maintained；
Divide the uncontrollable rise of liquid level of tank or the increase of filter A or B pressure difference, timely switch filtering device, to it Step 5: working as
Cleared up；
Before and after being improved according to device from the point of view of actual long-time operation conditions, the present invention can press in solving device long-term operation
The problem of polymerization of contracting machine section blocks, can save 4821.6 tons of 3.5MPa steam, energy-saving effect is obvious every year.
It should be noted that those skilled in the art can also make such or such appearance under the teaching of this specification
Easy variation pattern, such as equivalent way, or obvious mode of texturing.Above-mentioned variation pattern all should protection scope of the present invention it
It is interior.
Claims (8)
1. a kind of device for solving the polymerization of styrene tail-gas compressor section and blocking, it includes aftercooler, compressor suction tank, tail gas
Compressor, liquid separation tank and exhaust gas cooler, the aftercooler tube side bottom set pipeline B, the pipeline B to be connected to water-oil separating
Device, the outlet of the compressor suction tank are provided with pipeline E, and the pipeline E connects with the tail-gas compressor, the tail gas pressure
The outlet of contracting machine is provided with pipeline F, and the pipeline F is connected with liquid separation tank；
Pipeline G is connected between the liquid separation tank top and the exhaust gas cooler；
It is characterized in that：Described device also includes suction port of compressor cooler, the aftercooler and suction port of compressor cooler it
Between be connected with pipeline A, the two pass through the pipeline A keep connection；The suction port of compressor cooler tube side is provided with pipeline D,
The pipeline D connects with the compressor suction tank；The suction port of compressor cooler tube side bottom is provided with pipeline C, described
Pipeline B and pipeline C is collected to connected entrance A；
The outlet of the liquid separation pot bottom sets pipeline H to oil water separator.
A kind of 2. device for solving the polymerization of styrene tail-gas compressor section and blocking according to claim 1, it is characterised in that：
The pipeline H entrances are provided with filter.
A kind of 3. device for solving the polymerization of styrene tail-gas compressor section and blocking according to claim 2, it is characterised in that：
The filter includes filter A and filter B, and the filter A and filter B are in connection side by side, the filter A tops
Provided with cross-line I.
A kind of 4. method for solving the polymerization of styrene tail-gas compressor section and blocking, it is characterised in that：Using described in claim 1
Device, methods described comprise the following steps successively：
Styrene tail gas is passed through suction port of compressor cooler after aftercooler cools down, through pipeline A and carries out deep cooling, the liquid after deep cooling
Body is by pipeline C to connected entrance A, and then again through pipeline B to oil water separator, the gas phase after deep cooling enters through pipeline D to be compressed
Liquid separation in machine suction tank；
Gas phase after compressor suction tank liquid separation enters tail-gas compressor by pipeline E, through pipe after tail-gas compressor compresses
Line F enters liquid separation tank；
Tail gas after the separation of liquid separation tank enters exhaust gas cooler through pipeline G, and the liquid through line H separated through liquid separation tank removes profit
Separator.
A kind of 5. method for solving the polymerization of styrene tail-gas compressor section and blocking, it is characterised in that：Using Claims 2 or 3 institute
The device stated, methods described comprise the following steps successively：
Styrene tail gas is passed through suction port of compressor cooler after aftercooler cools down, through pipeline A and carries out deep cooling, the liquid after deep cooling
Body is by pipeline C to connected entrance A, and then again through pipeline B to oil water separator, the gas phase after deep cooling enters through pipeline D to be compressed
Liquid separation in machine suction tank；
Gas phase after compressor suction tank liquid separation enters tail-gas compressor by pipeline E, through pipe after tail-gas compressor compresses
Line F enters liquid separation tank；
Tail gas after the separation of liquid separation tank enters exhaust gas cooler through pipeline G, and the liquid through line H separated through liquid separation tank entered
Filter A or/and filter B, remove oil water separator after filtering.
6. the method according to claim 4 for solving the polymerization of styrene tail-gas compressor section and blocking, it is characterised in that：Through depth
Gas phase Wen Du≤20 DEG C after cold.
7. the method according to claim 5 for solving the polymerization of styrene tail-gas compressor section and blocking, it is characterised in that：Through depth
Gas phase Wen Du≤20 DEG C after cold.
8. the method for solving the polymerization of styrene tail-gas compressor section and blocking according to claim 6 or 7, it is characterised in that：
Gas phase Wen Du≤15 DEG C after deep cooling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710956904.5A CN107721807A (en) | 2017-10-16 | 2017-10-16 | A kind of device and method for solving the polymerization of styrene tail-gas compressor section and blocking |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710956904.5A CN107721807A (en) | 2017-10-16 | 2017-10-16 | A kind of device and method for solving the polymerization of styrene tail-gas compressor section and blocking |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107721807A true CN107721807A (en) | 2018-02-23 |
Family
ID=61211247
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710956904.5A Pending CN107721807A (en) | 2017-10-16 | 2017-10-16 | A kind of device and method for solving the polymerization of styrene tail-gas compressor section and blocking |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107721807A (en) |
-
2017
- 2017-10-16 CN CN201710956904.5A patent/CN107721807A/en active Pending
Non-Patent Citations (3)
| Title |
|---|
| 张伟斌;: "苯乙烯装置脱氢尾气处理系统堵塞的原因分析" * |
| 方祖成 等, 中国质检出版社 * |
| 曹树腾;: "乙苯脱氢后冷系统存在的问题及改造分析" * |
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Application publication date: 20180223 |