CN106083515A - Stabilizer tower top material condensation refrigerated separation method and device in benzene hydrogenation process - Google Patents
Stabilizer tower top material condensation refrigerated separation method and device in benzene hydrogenation process Download PDFInfo
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- CN106083515A CN106083515A CN201610652530.3A CN201610652530A CN106083515A CN 106083515 A CN106083515 A CN 106083515A CN 201610652530 A CN201610652530 A CN 201610652530A CN 106083515 A CN106083515 A CN 106083515A
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C7/00—Purification; Separation; Use of additives
- C07C7/04—Purification; Separation; Use of additives by distillation
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Abstract
The present invention relates to stabilizer tower top material condensation refrigerated separation method and device in a kind of benzene hydrogenation process, stablize tower top material condense in overhead condensation cooler cooling after, major part gas is directly entered aerofluxus condensate cooler, and the gas of fraction entrained liquids enters gas-liquid separator；Liquid in overhead condensation cooler is by entering backflash after gas-liquid separator；The gas phase that gas-liquid separator separates goes out enters aerofluxus condensate cooler, and isolated liquid flows into backflash；Backflash is entered through the condensed liquid of aerofluxus condensate cooler；Liquid in backflash carries out oil-water separation.Stabilizer tower top major part gas is directly discharged after steam discharge condensate cooler by the present invention, it is to avoid incoagulable gas deposits in the duct and causes discharge opeing not smooth, improves gas-liquid separation effect, it is ensured that stabilizer tower pressure and other operation index are stable；Overhead condensation cooler, gas-liquid separator and backflash use integral structure, and floor space is little.
Description
Technical field
The present invention relates to crude benzene refining production technical field, particularly relate to stabilizer tower top material in a kind of benzene hydrogenation process
Condensation refrigerated separation method and device.
Background technology
The purpose of crude benzene refining seeks to the alkane in removing crude benzol, alkene, sulfur-bearing compounds and contains nitrogen compound
Deng impurity, then through products such as rectification isolated purified petroleum benzin, pure toluene, dimethylbenzene.
In two sections of low-temperature catalyzed hydrogenation techniques of gas phase, in pre-reactor, mainly make alkadienes and styrene saturated,
In main reactor, mainly remove sulfur, nitrogen and oxide so that it is be converted into hydrogen sulfide, water and ammonia；These materials are at high pressure separating tank
After all together enter stabilizer with material.In stabilizer, by adding thermal distillation, remove the foreign gas being dissolved in material.
Foreign gas and product steam together enter into stabilizer overhead condensation cooler, carry out in backflash afterwards gas-liquid separation and
Oil-water separation, isolated gas phase delivers to subsequent gases processing unit after aerofluxus condensate cooler, and aerofluxus condensate cooler is cold
Coagulating the liquid also into backflash, in backflash, isolated hydrogenated oil is sent back to stabilizer by reflux pump and is played infinite reflux, separates
The water gone out delivers to corresponding unit for treating water.
The Chinese patent of Application No. 201520668917.9, discloses " a kind of stabilizer for benzene hydrogenation system ",
Including tower body and the tower tray being arranged in tower body, described tower body includes rectifying section, stripping section and tower reactor section, rectifying section is provided with
Tower top outlet, feed(raw material)inlet and refluxing opening, tower top outlet connects condenser, and the outlet of condenser connects stable backflash,
The gaseous phase outlet connection stablizing backflash has gaseous effluent, and liquid-phase outlet is connected with refluxing opening with return duct by reflux pump
Logical, the feed end of feed(raw material)inlet connects preheater ... steam inlet and condensate outlet respectively with the import and export of reboiler
It is connected.”
There are some problems in process above and device in actual production running, mainly from stabilizer overhead condensation
Having some setbacks to discharge opeing in the pipeline between backflash after cooler, in backflash, gas-liquid separation effect is undesirable, stabilizer tower pressure
Unstable.The analysis of causes causing above-mentioned phenomenon is as follows: owing to stabilizer overhead gas is mainly C4, C5 alkane, H2、NH3、H2S and
H2The incoagulable gas of O etc, after stabilizer overhead condensation cooler, gas phase, the volume ratio of liquid phase are about 15:1, as
This big gas liquid ratio can cause incoagulable gas to deposit in the duct, and causes under liquid holdup not, finally affects stabilizer tower
Pressure and other operation indexs.
Summary of the invention
The invention provides stabilizer tower top material condensation refrigerated separation method and device in a kind of benzene hydrogenation process, pass through
Steam vent is set up, by stabilizer tower top major part gas directly through steam discharge condensate cooler heel row at overhead condensation cooler shell side
Go out, it is to avoid incoagulable gas deposits in the duct and causes discharge opeing smooth, improves gas-liquid separation effect, it is ensured that stabilizer tower pressure and
Its operation index is stable；Overhead condensation cooler, gas-liquid separator and backflash use integral structure, and floor space is little.
In order to achieve the above object, the present invention realizes by the following technical solutions:
In benzene hydrogenation process, stabilizer tower top material condensation refrigerated separation method, comprises the steps:
1) in production process, including the stable tower top material of foreign gas and product steam in overhead condensation cooler cold
Solidifying cooling；Under the control of flow control valve, major part gas is directly entered aerofluxus condensate cooler, fraction entrained liquids
Gas enters gas-liquid separator；Liquid in overhead condensation cooler is by entering backflash after gas-liquid separator；
2) gas phase that gas-liquid separator separates goes out is discharged after mist caught by the mist eliminator at gas-liquid separator top, with overhead condensation
Cooler expellant gas enters aerofluxus condensate cooler after converging, and isolated liquid flows into the backflow of gas-liquid separator bottom
Groove；
3) gas after aerofluxus condensate cooler cools down delivers to subsequent gases processing unit, and condensed liquid enters back
Chute；
4) each several part liquid joint entered in backflash together and carries out oil-water separation, and isolated hydrogenated oil is by returning
Infinite reflux played by stream pumped back stabilizer, and isolated water delivers to follow-up unit for treating water.
For realizing the device of the condensation refrigerated separation method of stabilizer tower top material in benzene hydrogenation process, including stabilizer,
Overhead condensation cooler, aerofluxus condensate cooler and backflash, also include gas-liquid separator；Described overhead condensation cooler shell side
Material inlet stable connection column overhead material outlet, the steam vent on shell side top by gas transmission pipeline connect aerofluxus condense
Cooler, the outage of shell side bottom connects back to chute by gas-liquid separator；Gas-liquid separator top and gas transmission pipeline
Connection, bottom connects with backflash；The hydrogenated oil outlet bottom the backflash refluxing opening by reflux pump stable connection tower, backflow
The unit for treating water outside water out connection of trench bottom；The outlet of aerofluxus condensate cooler top gas connects extraneous gas and processes
Unit, the liquid outlet of bottom connects back to chute.
Described overhead condensation cooler, gas-liquid separator are integrated with backflash, overhead condensation cooler, gas-liquid
Separator is respectively arranged on above backflash, connects with backflash bottom gas-liquid separator, overhead condensation cooler shell side bottom
Outage connects with gas-liquid separator, and baffled in the gas-liquid separator of connectivity part；Gas-liquid separator top sets mist eliminator.
Flow-through orifice is set at the steam vent on described overhead condensation cooler shell side top.
Flow control valve is set on described gas transmission pipeline.
Compared with prior art, the invention has the beneficial effects as follows:
1) by setting up steam vent at overhead condensation cooler shell side, it is achieved stabilizer tower top major part gas is directly through row
Discharge after vapour condensate cooler, it is to avoid incoagulable gas deposits in the duct and causes discharge opeing not smooth, improves gas-liquid separation effect, protects
Card stabilizer tower pressure and other operation index are stable；
2) overhead condensation cooler, gas-liquid separator and backflash use integral structure, and floor space is little.
Accompanying drawing explanation
Fig. 1 is the technological process of stabilizer tower top material condensation refrigerated separation method in benzene hydrogenation process of the present invention
Figure.
In figure: 1. preheater 2. stabilizer 3. reboiler 4. overhead condensation cooler 5. gas-liquid separator 6. aerofluxus
Condensate cooler 7. backflash 8. reflux pump 9. flow control valve 10. baffle plate 11. mist eliminator 12. materials at bottom of tower delivery pump
Detailed description of the invention
Below in conjunction with the accompanying drawings the detailed description of the invention of the present invention is described further:
As it is shown in figure 1, stabilizer tower top material condensation refrigerated separation method in benzene hydrogenation process of the present invention, including such as
Lower step:
1) in production process, including the stable tower top material of foreign gas and product steam in overhead condensation cooler 4
Condensation cooling；Under the control of flow control valve 9, major part gas is directly entered aerofluxus condensate cooler 6, and fraction carries liquid secretly
The gas of body enters gas-liquid separator 5；Liquid in overhead condensation cooler 4 is by entering backflash 7 after gas-liquid separator 5；
2) the isolated gas phase of gas-liquid separator 5 is discharged after mist caught by the mist eliminator 11 at gas-liquid separator 5 top, with tower top
Condensate cooler 4 expellant gas enters aerofluxus condensate cooler 6 after converging, and isolated liquid flows into gas-liquid separator 5 times
The backflash 7 in portion；
3) gas after aerofluxus condensate cooler 6 cools down delivers to subsequent gases processing unit, and condensed liquid enters
Backflash 7；
4) each several part liquid joint entered in backflash 7 together and carries out oil-water separation, isolated hydrogenated oil by
Reflux pump 8 is sent stabilizer back to and is played infinite reflux, and isolated water delivers to follow-up unit for treating water.
As it is shown in figure 1, by high pressure separating tank separate after newly enter after the preheated device of material 1 preheats to enter in stabilizer 2,
Stabilizer 2 is provided with reboiler 3, the preheated device of extraction material 1 at the bottom of stabilizer 2 tower with newly enter after material-heat-exchanging defeated by materials at bottom of tower
Pump 12 is sent to send to distillation；Of the present invention for realizing stabilizer tower top material condensation refrigerated separation method in benzene hydrogenation process
Device, in addition to including stabilizer 2, overhead condensation cooler 4, aerofluxus condensate cooler 6 and the backflash 7 of routine, also includes gas
Liquid/gas separator 5；The material inlet stable connection tower 2 tower top material outlet of described overhead condensation cooler 4 shell side, shell side top
Steam vent connects aerofluxus condensate cooler 6 by gas transmission pipeline, and the outage of shell side bottom is connected by gas-liquid separator 5
Backflash 7；Gas-liquid separator 5 top connects with gas transmission pipeline, and bottom connects with backflash 7；Hydrogenation bottom backflash 7
The oil export refluxing opening by reflux pump 8 stable connection tower 2, the unit for treating water outside water out connection bottom backflash 7；
The outlet of aerofluxus condensate cooler 6 top gas connects extraneous gas processing unit, and the liquid outlet of bottom connects back to chute 7.
Described overhead condensation cooler 4, gas-liquid separator 5 are integrated with backflash 7, overhead condensation cooler 4,
Gas-liquid separator 5 is respectively arranged on above backflash 7, connects with backflash 7 bottom gas-liquid separator 5, overhead condensation cooler 4 shell
The outage of journey bottom connects with gas-liquid separator 5, and in the gas-liquid separator 5 of connectivity part baffled 10；Gas-liquid separator 5 pushes up
Portion sets mist eliminator 11.
Flow-through orifice is set at the steam vent on described overhead condensation cooler 4 shell side top.
Flow control valve 9 is set on described gas transmission pipeline.
The above, the only present invention preferably detailed description of the invention, but protection scope of the present invention is not limited thereto,
Any those familiar with the art in the technical scope that the invention discloses, according to technical scheme and
Inventive concept equivalent or change in addition, all should contain within protection scope of the present invention.
Claims (5)
1. stabilizer tower top material condensation refrigerated separation method in benzene hydrogenation process, it is characterised in that comprise the steps:
1), in production process, the stable tower top material including foreign gas and product steam condenses cold in overhead condensation cooler
But；Under the control of flow control valve, major part gas is directly entered aerofluxus condensate cooler, the gas of fraction entrained liquids
Enter gas-liquid separator；Liquid in overhead condensation cooler is by entering backflash after gas-liquid separator；
2) gas phase that gas-liquid separator separates goes out is discharged after mist caught by the mist eliminator at gas-liquid separator top, cools down with overhead condensation
Device expellant gas enters aerofluxus condensate cooler after converging, and isolated liquid flows into the backflash of gas-liquid separator bottom；
3) gas after aerofluxus condensate cooler cools down delivers to subsequent gases processing unit, and condensed liquid enters backflow
Groove；
4) each several part liquid joint entered in backflash together and carries out oil-water separation, and isolated hydrogenated oil is by reflux pump
Sending stabilizer back to and play infinite reflux, isolated water delivers to follow-up unit for treating water.
2. for realizing the dress of stabilizer tower top material condensation refrigerated separation method in the benzene hydrogenation process described in claim 1
Put, including stabilizer, overhead condensation cooler, aerofluxus condensate cooler and backflash, it is characterised in that also include gas-liquid separation
Device；The material inlet stable connection column overhead material outlet of described overhead condensation cooler shell side, the steam vent on shell side top leads to
Crossing gas transmission pipeline and connect aerofluxus condensate cooler, the outage of shell side bottom connects back to chute by gas-liquid separator；Gas
Liquid/gas separator top connects with gas transmission pipeline, and bottom connects with backflash；Hydrogenated oil outlet bottom backflash is by returning
The refluxing opening of stream pump stable connection tower, the unit for treating water outside water out connection bottom backflash；Aerofluxus condensate cooler
Top gas outlet connects extraneous gas processing unit, and the liquid outlet of bottom connects back to chute.
Stabilizer tower top material condensation refrigerated separation device in benzene hydrogenation process the most according to claim 2, its feature exists
In, described overhead condensation cooler, gas-liquid separator are integrated with backflash, overhead condensation cooler, gas-liquid separation
Device is respectively arranged on above backflash, connects with backflash bottom gas-liquid separator, the discharge opeing of overhead condensation cooler shell side bottom
Hole connects with gas-liquid separator, and baffled in the gas-liquid separator of connectivity part；Gas-liquid separator top sets mist eliminator.
Stabilizer tower top material condensation refrigerated separation device in benzene hydrogenation process the most according to claim 2, its feature exists
In, set flow-through orifice at the steam vent on described overhead condensation cooler shell side top.
Stabilizer tower top material condensation refrigerated separation device in benzene hydrogenation process the most according to claim 2, its feature exists
In, described gas transmission pipeline sets flow control valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610652530.3A CN106083515B (en) | 2016-08-11 | 2016-08-11 | Stabilizer tower top material condenses refrigerated separation method and device in benzene hydrogenation process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610652530.3A CN106083515B (en) | 2016-08-11 | 2016-08-11 | Stabilizer tower top material condenses refrigerated separation method and device in benzene hydrogenation process |
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| CN106083515A true CN106083515A (en) | 2016-11-09 |
| CN106083515B CN106083515B (en) | 2019-03-29 |
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| CN201610652530.3A Active CN106083515B (en) | 2016-08-11 | 2016-08-11 | Stabilizer tower top material condenses refrigerated separation method and device in benzene hydrogenation process |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109369320A (en) * | 2018-12-12 | 2019-02-22 | 中冶焦耐(大连)工程技术有限公司 | C5 non-aromatics method of purification and system in crude benzole hydrogenation process for refining |
| CN110393950A (en) * | 2019-07-18 | 2019-11-01 | 宣化钢铁集团有限责任公司 | A kind of debenzolizing tower top oily-water seperating equipment that separating effect is excellent and method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204891529U (en) * | 2015-08-03 | 2015-12-23 | 中冶焦耐工程技术有限公司 | Device that discharges is stabilized in succession to incoagulable gas in control benzene recovery system |
| CN204932912U (en) * | 2015-09-01 | 2016-01-06 | 云南大为恒远化工有限公司 | A kind of stabilizer for benzene hydrogenation system |
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2016
- 2016-08-11 CN CN201610652530.3A patent/CN106083515B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204891529U (en) * | 2015-08-03 | 2015-12-23 | 中冶焦耐工程技术有限公司 | Device that discharges is stabilized in succession to incoagulable gas in control benzene recovery system |
| CN204932912U (en) * | 2015-09-01 | 2016-01-06 | 云南大为恒远化工有限公司 | A kind of stabilizer for benzene hydrogenation system |
Non-Patent Citations (1)
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| 刘成军等: "开工阶段汽油加氢脱硫装置稳定塔压力不稳定的原因", 《炼油技术与工程》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109369320A (en) * | 2018-12-12 | 2019-02-22 | 中冶焦耐(大连)工程技术有限公司 | C5 non-aromatics method of purification and system in crude benzole hydrogenation process for refining |
| CN110393950A (en) * | 2019-07-18 | 2019-11-01 | 宣化钢铁集团有限责任公司 | A kind of debenzolizing tower top oily-water seperating equipment that separating effect is excellent and method |
| CN110393950B (en) * | 2019-07-18 | 2024-03-22 | 宣化钢铁集团有限责任公司 | Oil-water separation device and method for benzene removal tower top with excellent separation effect |
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| CN106083515B (en) | 2019-03-29 |
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