CN107670318A - EP rubbers produces method for recovering solvents and recovery system - Google Patents
EP rubbers produces method for recovering solvents and recovery system Download PDFInfo
- Publication number
- CN107670318A CN107670318A CN201710852032.8A CN201710852032A CN107670318A CN 107670318 A CN107670318 A CN 107670318A CN 201710852032 A CN201710852032 A CN 201710852032A CN 107670318 A CN107670318 A CN 107670318A
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- Prior art keywords
- solvent
- flash tank
- glue
- rubbers
- pending
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D3/00—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
- B01D3/06—Flash distillation
- B01D3/065—Multiple-effect flash distillation (more than two traps)
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
Abstract
One aspect of the present invention provides a kind of EP rubbers production method for recovering solvents, comprises the following steps：Pending glue after pressurized heating is delivered into the first flash tank to carry out flash distillation except acid treatment and reclaim the Part I solvent in pending glue；It will flash and deacidify and reclaim the pending glue repressurization after Part I solvent and heat, and deliver to the second flash tank and carry out flash distillation process to reclaim Part II solvent.The present invention also provides a kind of EP rubbers production solvent recovering system.It is an object of the invention to provide the EP rubbers that can be removed to sour corrosion material in pending glue production method for recovering solvents and recovery system.
Description
Technical field
The present invention relates to the production technical field of rubber and polymer, more specifically, is related to a kind of EP rubbers production
Method for recovering solvents and recovery system.
Background technology
The production of solwution method EP rubbers is carried out in polymeric kettle, and ethene, propylene, Third monomer or the 4th monomer are in catalyst
Polymerization generates EP rubbers in polymer reactor under effect.Polymer reactor discharge logistics in containing EP rubbers, solvent,
Remainder catalyst, unreacted polymerized monomer (ethene, propylene, Third monomer or the 4th monomer).Solvent needs to take off from product
Divided by recycle.The polymer solution viscosity is higher, unfavorable to mass-and heat-transfer, and heater easily blocks, and feedstock quality is unstable,
Contain acid medium in polymer, high temperature corrosion often has generation.Polymer fluid heater is tubular heat exchanger, is extruding pelletization unit
Visual plant, device fabrication complete come into operation has occurred heat exchange blockage, burn into fracture the problems such as, have passed through and repeatedly change
Make, heat exchanger tube is repeatedly changed, and has selected the multiple materials such as carbon steel, stainless steel and dual phase steel successively, and using effect is unsatisfactory.Point
Reason is analysed, the destruction of equipment is often caused by several factors accumulation is superimposed.Cause the process operations often parking more exchange device,
Can not continuously it run.
Top tank structure is flashed in existing process and uses coating treatment, is limited by domestic equipment process technology level.Update method
It is to change inwall treatment technology, saves equipment manufacturing cost.
The content of the invention
For problem present in correlation technique, it is an object of the invention to provide can be to acid rotten in pending glue
The EP rubbers production method for recovering solvents and recovery system that erosion material is removed.
To achieve the above object, one aspect of the present invention provides a kind of EP rubbers production method for recovering solvents, including such as
Lower step：
Pending glue after pressurized heating is delivered into the first flash tank flash except acid treatment and reclaim pending
Part I solvent in glue；
It will flash and deacidify and reclaim the pending glue repressurization after Part I solvent and heat, and deliver to the second flash distillation
Tank carries out flash distillation process to reclaim Part II solvent；And
Pending glue after recovery Part II solvent is delivered into extruder to reclaim residual solvent.
According to one embodiment of present invention, further comprise：Before pending liquid is delivered into the first flash tank, utilize
First force (forcing) pump is treated treatment fluid and pressurizeed, and then treats treatment fluid using primary heater and is heated.
According to one embodiment of present invention, further comprise：Wait to locate after Part I solvent will deacidify and reclaim
Reason glue is delivered to before the second flash tank, is treated treatment fluid using the second force (forcing) pump and is pressurizeed, then utilizes secondary heater
Treatment fluid is treated to be heated.
According to one embodiment of present invention, further comprise：, will after pending liquid is heated using secondary heater
Heated pending liquid is delivered to the 3rd heater and heated again, is then sent to the second flash tank.
According to one embodiment of present invention, further comprise：The residual solvent of recovery is delivered into vavuum pump and carries out multistage
Condensed after vacuumizing.
According to one embodiment of present invention, it is more than by the dosage of the Part II solvent of the second flash tank recovery by first
The dosage of the Part I solvent of flash tank recovery.
According to another aspect of the present invention, a kind of EP rubbers production solvent recovering system is also provided, including：First dodges
Steaming pot, the glue entrance of the first flash tank set gradually the first force (forcing) pump and primary heater；Second flash tank, the first flash tank
Successively the second flash tank is communicated to via the second force (forcing) pump and secondary heater；And extruder, the second flash tank and extruder
Connection.
According to one embodiment of present invention, the 3rd heater is additionally provided between secondary heater and the second flash tank.
According to one embodiment of present invention, the first solvent recovery port, and are provided with the top of the first flash tank
The second solvent recovery port is provided with the top of two flash tanks.
According to one embodiment of present invention, residual solvent recovery port is provided with the top of extruder, wherein, it is remaining molten
Agent recovery port is connected to vavuum pump and vavuum pump is connected with external condensation equipment.
The advantageous effects of the present invention are：
In the EP rubbers production method for recovering solvents and recovery system of the present invention, first to waiting to locate after pressurized, heated
Reason glue carries out flash distillation and removes acid treatment, so as to remove the sour corrosion material in pending glue；Glue after deacidification
When delivering to subsequent heat device, corrosion of the sour corrosion material to heater in glue can be effectively prevented from, so that system
Being capable of continuous and stable production.
Brief description of the drawings
Fig. 1 is the schematic diagram that solvent recovering system is produced according to one embodiment of the invention EP rubbers.
Embodiment
Below with reference to accompanying drawing, embodiments of the present invention is described in detail.
As shown in figure 1, the embodiment of one aspect of the present invention provides a kind of EP rubbers production method for recovering solvents, including
Following steps：
Pending glue after pressurized heating is delivered into the first flash tank 3 flash except acid treatment and reclaim pending
Part I solvent in glue；
It will flash and deacidify and reclaim the pending glue repressurization after Part I solvent and heat, and deliver to the second flash distillation
Tank 7 carries out flash distillation process to reclaim Part II solvent；And
Pending glue after recovery Part II solvent is delivered into extruder 8 to reclaim residual solvent.
In the above-described embodiments, flash distillation is carried out to the pending glue after pressurized, heated first and removes acid treatment, so as to
Remove the sour corrosion material in pending glue；When glue after deacidification delivers to subsequent heat device, it can be effectively prevented from
Corrosion of the sour corrosion material to heater in glue, so that system being capable of continuous and stable production.
According to one embodiment of present invention, further comprise：Before pending liquid is delivered into the first flash tank 3, profit
Treatment fluid is treated with the first force (forcing) pump 1 to be pressurizeed, and is then treated treatment fluid using primary heater 2 and is heated.Should can
To understand, the first flash tank 3 will be passed through again after the pressurization of pending liquid, it can be ensured that sour corrosion material in pending glue compared with
Fully it is removed.
According to one embodiment of present invention, further comprise：Wait to locate after Part I solvent will deacidify and reclaim
Reason glue is delivered to before the second flash tank 7, is treated treatment fluid using the second force (forcing) pump 4 and is pressurizeed, and then utilizes the second heating
Device 5 is treated treatment fluid and heated.
According to one embodiment of present invention, further comprise：After pending liquid is heated using secondary heater 5,
Heated pending liquid is delivered into the 3rd heater 6 to be heated again, is then sent to the second flash tank 7.
According to one embodiment of present invention, further comprise：The residual solvent of recovery is delivered into vavuum pump 9 and carries out multistage
Condensed after vacuumizing.
According to one embodiment of present invention, the dosage of the Part II solvent reclaimed by the second flash tank 7 is more than by the
The dosage of the Part I solvent of one flash tank 3 recovery.
Referring again to Fig. 1, embodiment according to a further aspect of the invention, a kind of EP rubbers production solvent recovery is also provided
System.Including：First flash tank 3, the glue entrance of the first flash tank 3 set gradually the first force (forcing) pump 1 and primary heater 2；
Second flash tank 7, the first flash tank 3 are communicated to the second flash tank 7 via the second force (forcing) pump 4 and secondary heater 5 successively；And
Extruder 8, the second flash tank 7 connect with extruder 8.
In the above-described embodiments, flash distillation is carried out to the pending glue after pressurized, heated first and removes acid treatment, so as to
Remove the sour corrosion material in pending glue；When glue after deacidification delivers to subsequent heat device, it can be effectively prevented from
Corrosion of the sour corrosion material to heater in glue, so that system being capable of continuous and stable production.
According to one embodiment of present invention, it is additionally provided with the 3rd heater between the flash tank 7 of secondary heater 5 and second
6。
According to one embodiment of present invention, the top of the first flash tank 3 is provided with the first solvent recovery port, and
The top of two flash tanks 7 is provided with the second solvent recovery port.
According to one embodiment of present invention, the top of extruder 8 is provided with residual solvent recovery port, wherein, it is remaining
Solvent recovery port is connected to vavuum pump 9 and vavuum pump 9 is connected with external condensation equipment.
According to one embodiment of present invention, anterior polymer fluid is heated to certain temperature by pump pressurization, heater successively
Enter flash tank with pressure, remove corrosive substance and partial solvent.Polymer fluid is heated to by pump pressurization, heater successively again
Certain temperature and pressure enter flash tank, remove most of solvent, pass through multi-stage vacuum by residual solvent subsequently into extruder
Remove.
After except acid treatment, common iron can be used in heater heat exchanger tube material, substantially reduces equipment manufacturing cost.Through using
Effect can meet production requirement.
Change flash vaporization kettle inwall processing processing mode, can under the premise of production requirement is met, reduce processing and manufacturing into
This.It can meet long-term production service requirement through using effect.
The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention, for the skill of this area
For art personnel, the present invention can have various modifications and variations.Within the spirit and principles of the invention, that is made any repaiies
Change, equivalent substitution, improvement etc., should be included in the scope of the protection.
Claims (10)
1. a kind of EP rubbers produces method for recovering solvents, it is characterised in that comprises the following steps：
By the pending glue after pressurized heating deliver to the first flash tank (3) carry out flash distillation except acid treatment and reclaim described in wait to locate
Manage the Part I solvent in glue；
It will flash and deacidify and reclaim the pending glue repressurization after Part I solvent and heat, and deliver to the second flash tank
(7) flash distillation process is carried out to reclaim Part II solvent；And
Pending glue after recovery Part II solvent is delivered into extruder (8) to reclaim residual solvent.
2. EP rubbers according to claim 1 produces method for recovering solvents, it is characterised in that further comprises：
Before the pending liquid is delivered into first flash tank (3), using the first force (forcing) pump (1) to the pending liquid
Pressurizeed, then the pending liquid is heated using primary heater (2).
3. EP rubbers according to claim 1 produces method for recovering solvents, it is characterised in that further comprises：
It will deacidify and reclaiming before the pending glue after Part I solvent delivers to second flash tank (7), utilizing
Two force (forcing) pumps (4) are treated treatment fluid and pressurizeed, and then treat treatment fluid using secondary heater (5) and are heated.
4. EP rubbers according to claim 3 produces method for recovering solvents, it is characterised in that further comprises：
After pending liquid is heated using the secondary heater (5), heated pending liquid is delivered into the 3rd heater
(6) heated again, be then sent to second flash tank (7).
5. EP rubbers according to claim 1 produces method for recovering solvents, it is characterised in that further comprises：
The residual solvent of recovery is delivered into vavuum pump (9) condensed after multistage vacuumizes.
6. EP rubbers according to claim 1 produces method for recovering solvents, it is characterised in that by second flash tank
(7) dosage of the Part II solvent of recovery is more than the Part I solvent reclaimed by first flash tank (3)
Dosage.
7. a kind of EP rubbers produces solvent recovering system, it is characterised in that including：
First flash tank (3), the glue entrance of first flash tank (3) set gradually the first force (forcing) pump (1) and the first heating
Device (2)；
Second flash tank (7), first flash tank (3) are communicated to via the second force (forcing) pump (4) and secondary heater (5) successively
Second flash tank (7)；And
Extruder (8), second flash tank (7) connect with the extruder (8).
8. EP rubbers according to claim 7 produces solvent recovering system, it is characterised in that the secondary heater
(5) the 3rd heater (6) is additionally provided between second flash tank (7).
9. EP rubbers according to claim 7 produces solvent recovering system, it is characterised in that first flash tank
(3) the first solvent recovery port is provided with the top of, and the second solvent recovery is provided with the top of second flash tank (7)
Port.
10. EP rubbers according to claim 7 produces solvent recovering system, it is characterised in that the extruder (8)
Top is provided with residual solvent recovery port,
Wherein, the residual solvent recovery port is connected to vavuum pump (9) and the vavuum pump (9) connects with external condensation equipment
Connect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710852032.8A CN107670318B (en) | 2017-09-19 | 2017-09-19 | EP rubbers produces method for recovering solvents and recovery system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710852032.8A CN107670318B (en) | 2017-09-19 | 2017-09-19 | EP rubbers produces method for recovering solvents and recovery system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107670318A true CN107670318A (en) | 2018-02-09 |
| CN107670318B CN107670318B (en) | 2019-10-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710852032.8A Active CN107670318B (en) | 2017-09-19 | 2017-09-19 | EP rubbers produces method for recovering solvents and recovery system |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101347684A (en) * | 2007-07-18 | 2009-01-21 | 中国石油化工股份有限公司 | Method for treating tail gas during production processes of polyalcohol |
| CN102120789A (en) * | 2010-07-12 | 2011-07-13 | 赛鼎工程有限公司 | Degassing technology in synthetic process of neoprene |
| CN103044598A (en) * | 2011-10-17 | 2013-04-17 | 中国石油天然气股份有限公司 | Method for flash evaporating and concentrating of liquid ethylene propylene rubber |
| CN103483483A (en) * | 2012-06-11 | 2014-01-01 | 中国石油化工集团公司 | Stripping device and stripping method for butyl rubber |
| CN104031196A (en) * | 2014-04-17 | 2014-09-10 | 王渊朴 | Production process for ethylene propylene rubber |
-
2017
- 2017-09-19 CN CN201710852032.8A patent/CN107670318B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101347684A (en) * | 2007-07-18 | 2009-01-21 | 中国石油化工股份有限公司 | Method for treating tail gas during production processes of polyalcohol |
| CN102120789A (en) * | 2010-07-12 | 2011-07-13 | 赛鼎工程有限公司 | Degassing technology in synthetic process of neoprene |
| CN103044598A (en) * | 2011-10-17 | 2013-04-17 | 中国石油天然气股份有限公司 | Method for flash evaporating and concentrating of liquid ethylene propylene rubber |
| CN103483483A (en) * | 2012-06-11 | 2014-01-01 | 中国石油化工集团公司 | Stripping device and stripping method for butyl rubber |
| CN104031196A (en) * | 2014-04-17 | 2014-09-10 | 王渊朴 | Production process for ethylene propylene rubber |
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| Publication number | Publication date |
|---|---|
| CN107670318B (en) | 2019-10-25 |
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Effective date of registration: 20200928 Address after: 132002 3-6 and 9-13 floors of Block A, Jihua Economic and Trade Center, Tongtan Road, Changyi District, Jilin Province Patentee after: PetroChina Jilin Chemical Engineering Co.,Ltd. Address before: 132002, Jilin, Jilin Province tung Chi Road East Economic and Trade Building Patentee before: JILIN DESIGNING INSTITUTE OF CNPC NORTHEAST REFINING & CHEMICAL ENGINEERING Co.,Ltd. |
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