CN106966851A - The production technology of isopropylbenzene is reclaimed in a kind of phenol raffinate - Google Patents
The production technology of isopropylbenzene is reclaimed in a kind of phenol raffinate Download PDFInfo
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- CN106966851A CN106966851A CN201710221948.3A CN201710221948A CN106966851A CN 106966851 A CN106966851 A CN 106966851A CN 201710221948 A CN201710221948 A CN 201710221948A CN 106966851 A CN106966851 A CN 106966851A
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- Prior art keywords
- fuel oil
- isopropylbenzene
- rectifying
- holding vessel
- collecting tank
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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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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Water Supply & Treatment (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The invention belongs to the production technology of isopropylbenzene is reclaimed in environmental protective chemical industry field, more particularly to a kind of phenol raffinate.It is made up of storage tank, delivery pump, bottom of towe kettle, electric heater, rectifying column, condenser, vavuum pump, reflux ratio controller, collecting tank, Forced Mixing device, static mixer, compression pump, emulsifying agent holding vessel, fuel oil holding vessel, emulsified fuel oil collecting tank, cryogenic system, absorbent charcoal adsorber；It is broadly divided into rectifying separation, exhaust-gas treatment, residue and recycles these three processes.
Description
Technical field
The invention belongs to the production technology of isopropylbenzene is reclaimed in environmental protective chemical industry field, more particularly to a kind of phenol raffinate.
Background technology
Phenol raffinate refers in cumene oxidation legal system phenol manufacturing process, isolates remaining part mixing after phenol
Thing；Its main component has α-methylstyrene, paraxylene, isopropylbenzene, phenol, acetophenone etc., wherein α-methylstyrene most
It is many.Acetophenone is used for perfumed soap processed and cigarette, also serves as the plasticising in the solvent and plastics industry production of cellulose esters and resin etc.
Agent etc..It can be made, or be made by ethylbenzene oxidation with acetic anhydride by benzene, it is also possible to which chloroacetic chloride is with benzene under alchlor effect
It is made through Friedel-crafts reaction；Isopropylbenzene is a kind of colourless liquid for having a special aromatic odor.Be mainly used as production phenol and acetone, α-
Methyl styrene etc., it is also possible to make organic synthesis raw material and improve the additive of engine fuel octane, be important industry
Raw material.Industrially, isopropylbenzene is prepared mainly using benzene and propylene as raw material in the presence of catalyst through alkylated reaction.Pass
System method prepares isopropylbenzene, though can largely produce, because of the different choice of catalyst, can cause equipment corrosion, production environment
It is seriously polluted, in addition cause isopropylbenzene purity it is not high a series of problems, such as.Meanwhile, production process is cumbersome, produces complicated；
α-methylstyrene, which is called, does α-phenylethylene or propyloxy phenyl alkene, is a kind of colourless or lurid transparent liquid in appearance
Body, is commonly used for monomer or modified monomer that polymerisation produces adhesive base-material, be synthetic resin and plastics important monomer it
One, it is also the modifying agent of polyester resin, alkyd resin and ABS resin.It can be additionally used in production coating, plasticizer etc., be a kind of weight
The industrial chemicals wanted.Therefore it is very necessary utility to be reclaimed from phenol raffinate, is conducive to resource reclaim and environment to protect
Shield.
According to documents, the recycling of original phenol raffinate has only reclaimed the thing of two kinds of useful constituents of phenol and acetophenone
Matter, and removal process need to add catalyst and high-temperature solvent oil, and this process is without catalyst and technological operation is simple,
The recyclable isopropylbenzene in addition to phenol, acetophenone, and purity is very high.
Documents：Invention is authorized：A kind of method that phenol and acetophenone are reclaimed from phenol tar,
2012101176825；The method and apparatus that phenol tar refines p -cumylphenol, 2012103221007.
The content of the invention
The production technology of isopropylbenzene is reclaimed in a kind of phenol raffinate, by storage tank, delivery pump, bottom of towe kettle, electrical heating
Device, rectifying column, condenser, vavuum pump, reflux ratio controller, collecting tank, Forced Mixing device, static mixer, compression pump, emulsification
Agent holding vessel, fuel oil holding vessel, emulsified fuel oil collecting tank, cryogenic system, absorbent charcoal adsorber composition；It is broadly divided into essence
Cut from, exhaust-gas treatment, residue recycle technical process.
（1）Bottom of towe kettle is heated to 130 DEG C ~ 140 DEG C when rectifying is separated, tower top temperature is 70 DEG C ~ 80 DEG C so that isopropylbenzene
Separate, after condenser cools, by after reflux ratio controller respectively with 5:1 ratio is delivered to reaction tower and collection
In tank；Make -0.09 vacuum of holding in device using vavuum pump during this, improve gas rate flow；
（2）Exhaust-gas treatment：It is set to keep negative pressure using vavuum pump in rectifying separation process, the gas so extracted need to handle rear
It can discharge, the waste gas of extraction be passed sequentially through into cryogenic system and absorbent charcoal adsorber, cryogenic system design temperature is on -10 DEG C of left sides
It is right that portion is changed into waste collection extraction, rectifying separation can be re-started；Remainder of exhaust gas will pass through absorbent charcoal adsorber
It can be discharged into after being adsorbed in air.
（3）Residue is recycled：The residue after rectifying and fuel oil, emulsifying agent are thrown into Forced Mixing by delivery pump respectively
Device carries out Forced Mixing, after mix in entrance static mixer, by compression pump forced circulation, finally by delivery pump by breast
Change fuel oil throws static mixer into and arrives emulsified fuel oil holding vessel again.
Fig. 1 is the structural representation that phenol raffinate reclaims isopropyl benzene apparatus；
1 is storage tank in figure, and 2 be delivery pump, and 3 be bottom of towe kettle, and 4 be electric heater, and 5 be rectifying column, and 6 be condenser, and 7 are
Vavuum pump, 8 be reflux ratio controller, and 9 be collecting tank, and 10 be Forced Mixing device, and 11 be static mixer, and 12 be compression pump, 13
It is fuel oil holding vessel for emulsifying agent holding vessel, 14,15 be emulsified fuel oil collecting tank, and 16 be cryogenic system, and 17 be activated carbon
Adsorbent equipment.
Embodiment
The production technology of isopropylbenzene is reclaimed in a kind of phenol raffinate, by storage tank, delivery pump, bottom of towe kettle, electrical heating
Device, rectifying column, condenser, vavuum pump, reflux ratio controller, collecting tank, Forced Mixing device, static mixer, compression pump, emulsification
Agent holding vessel, fuel oil holding vessel, emulsified fuel oil collecting tank, cryogenic system, absorbent charcoal adsorber composition；It is broadly divided into essence
Cut from, exhaust-gas treatment, residue recycle technical process.
（1）Rectifying is separated：Phenol raffinate in head tank is pumped into bottom of towe kettle, by bottom of towe kettle be heated to 130 DEG C ~
140 DEG C, tower top temperature is 70 DEG C ~ 80 DEG C so that isopropylbenzene is separated, after condenser cools, and passes through reflux ratio control
Respectively with 5 after device:1 ratio is delivered in reaction tower and collecting tank；Make holding -0.09 in device using vavuum pump during this
Vacuum, improves gas rate flow；
（2）Exhaust-gas treatment：It is set to keep negative pressure using vavuum pump in rectifying separation process, the gas so extracted need to handle rear
It can discharge, the waste gas of extraction be passed sequentially through into cryogenic system and absorbent charcoal adsorber, cryogenic system design temperature is on -10 DEG C of left sides
It is right that portion is changed into waste collection extraction, rectifying separation can be re-started；Remainder of exhaust gas will pass through absorbent charcoal adsorber
It can be discharged into after being adsorbed in air.
（3）Residue is recycled：The residue after rectifying and fuel oil, emulsifying agent are thrown into Forced Mixing by delivery pump respectively
Device carries out Forced Mixing, after mix in entrance static mixer, by compression pump forced circulation, finally by delivery pump by breast
Change fuel oil throws static mixer into and arrives emulsified fuel oil holding vessel again.
By reclaiming the high purity 99.5% of isopropylbenzene after above procedure from phenol raffinate, industrial isopropyl is complied fully with
Benzene.
By said process, isopropylbenzene is obtained, its data is as follows：
Table 1 is the analysis result table for reclaiming isopropylbenzene
Claims (1)
1. in a kind of phenol raffinate reclaim isopropylbenzene production technology, by storage tank, delivery pump, bottom of towe kettle, electric heater,
Rectifying column, condenser, vavuum pump, reflux ratio controller, collecting tank, Forced Mixing device, static mixer, compression pump, emulsifying agent
Holding vessel, fuel oil holding vessel, emulsified fuel oil collecting tank, cryogenic system, absorbent charcoal adsorber composition；It is broadly divided into rectifying
The technical process that separation, exhaust-gas treatment, residue are recycled, concrete technology is as follows：
（1）Bottom of towe kettle is heated to 135 DEG C when rectifying is separated, tower top temperature is 75 DEG C so that isopropylbenzene is separated；This process
Middle utilization vavuum pump makes the vacuum of holding -0.09MPa in device；
（2）Waste gas passes sequentially through cryogenic system and absorbent charcoal adsorber, and cryogenic system design temperature is at -10 DEG C；
（3）Residue after rectifying and fuel oil, emulsifying agent are subjected to Forced Mixing by Forced Mixing device, incorporation time is
20min, temperature is 70 DEG C；Enter after having mixed in static mixer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710221948.3A CN106966851A (en) | 2017-04-06 | 2017-04-06 | The production technology of isopropylbenzene is reclaimed in a kind of phenol raffinate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710221948.3A CN106966851A (en) | 2017-04-06 | 2017-04-06 | The production technology of isopropylbenzene is reclaimed in a kind of phenol raffinate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106966851A true CN106966851A (en) | 2017-07-21 |
Family
ID=59337276
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710221948.3A Withdrawn CN106966851A (en) | 2017-04-06 | 2017-04-06 | The production technology of isopropylbenzene is reclaimed in a kind of phenol raffinate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106966851A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4333801A (en) * | 1981-08-03 | 1982-06-08 | Uop Inc. | Recovery of a cumene/alpha-methylstyrene fraction from a mixture thereof with phenol and water |
| JPS63253041A (en) * | 1987-04-09 | 1988-10-20 | Mitsui Petrochem Ind Ltd | Recovery of useful substance from phenol distillation residue |
-
2017
- 2017-04-06 CN CN201710221948.3A patent/CN106966851A/en not_active Withdrawn
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4333801A (en) * | 1981-08-03 | 1982-06-08 | Uop Inc. | Recovery of a cumene/alpha-methylstyrene fraction from a mixture thereof with phenol and water |
| JPS63253041A (en) * | 1987-04-09 | 1988-10-20 | Mitsui Petrochem Ind Ltd | Recovery of useful substance from phenol distillation residue |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20170721 |