CN106565430A - Method for recovering by-product anisole of diphenyl carbonate technology - Google Patents
Method for recovering by-product anisole of diphenyl carbonate technology Download PDFInfo
- Publication number
- CN106565430A CN106565430A CN201611006126.5A CN201611006126A CN106565430A CN 106565430 A CN106565430 A CN 106565430A CN 201611006126 A CN201611006126 A CN 201611006126A CN 106565430 A CN106565430 A CN 106565430A
- Authority
- CN
- China
- Prior art keywords
- anisole
- diphenyl carbonate
- methyl phenyl
- phenyl ethers
- ethers anisole
- 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
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C41/00—Preparation of ethers; Preparation of compounds having groups, groups or groups
- C07C41/01—Preparation of ethers
- C07C41/34—Separation; Purification; Stabilisation; Use of additives
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C68/00—Preparation of esters of carbonic or haloformic acids
- C07C68/06—Preparation of esters of carbonic or haloformic acids from organic carbonates
Abstract
The invention discloses a method for recovering by-product anisole of the diphenyl carbonate technology. In the technology of producing diphenyl carbonate through the transesterification method, the anisole produced through side reaction can be used for organic synthesis or used as a solvent, perfume or an insect repellant. For example, the anisole can be used for preparation of various kinds of flower fragrance type essence and used as an antioxidant of beer, a polyvinyl ultraviolet ray stabilizer, a raw material of vermifuge, the solvent of liquid chromatographic analysis or an extraction agent. Although the market capacity is small, the anisole has certain value. According to the method for recovering the by-product anisole of the diphenyl carbonate technology, the by-product anisole of the technology of producing the diphenyl carbonate through the transesterification method can be recovered through little heat.
Description
Technical field
The present invention relates to phenol and dimethyl carbonate as raw material, in carbonate production by transesterification diphenyl ester technique, reclaim
The method of its side-product methyl phenyl ethers anisole.
Background technology
Diphenyl carbonate (abbreviation diphenyl carbonate) is production Merlon（Abbreviation PC）Important source material, with PC need
The amount of asking is continuously increased, and the popularization of ester-interchange method clean manufacturing PC technology, and diphenyl carbonate demand also increases sharply.Carbon
The synthetic method of diphenyl phthalate has phosgenation, phenol oxidation carbonylation method and ester-interchange method.Due to phosgene severe toxicity, environmental pollution
Seriously, progressively it is eliminated；Expensive catalyst that phenol oxidation carbonylation method is used and transformation efficiency is low, there is not yet industrialization
Report.Phosgene and phenol is replaced to carry out synthesis of diphenyl carbonate by ester exchange reaction with nontoxic, free of contamination dimethyl carbonate, it is reachable
To the purpose of clean manufacturing diphenyl carbonate, and dimethyl carbonate and phenol ester-interchange method are considered as current carbonate synthesis hexichol
The proper method of ester.The diphenyl carbonate quality that this method is obtained is high, can meet the requirement of optical grade PC production, is to close at present
It is also uniquely to have been carried out industrialized ester exchange process route into the route of diphenyl carbonate most captivation.
The reaction of ester-interchange method diphenyl carbonate synthesis is generally carried out in two steps：First step reaction is phenol and dimethyl carbonate
Synthesis of methyl phenyl carbonic ester（Abbreviation MPC）, second step reaction is that MPC itself occurs dismutation reaction and obtains diphenyl carbonate, two
Step reaction is balancing response, equilibrium constant very little, and there is side reaction for dimethyl carbonate and phenolmethylization reaction generation
Methyl phenyl ethers anisole.
Dimethyl carbonate is as follows with the overall reaction equation of phenol ester exchange synthesizing diphenyl carbonate：
Ester-interchange method reaction is divided into two steps, and reaction equation is as follows：
During carbonate production by transesterification diphenyl ester, phenol generates methyl phenyl ethers anisole, reaction equation with dimethyl carbonate side reaction
It is as follows：
。
The methyl phenyl ethers anisole that side reaction is generated can be used for organic synthesiss, it is also possible to make solvent, spice and anthelmintic.For example for matching somebody with somebody
Many bouquet type compositions are made, the antioxidant as medicated beer, the raw material of ethene polymerss ultra-violet stabilizer and enteral insecticide is used
Make the solvent and extractant of liquid-phase chromatographic analysis.Although market capacity is little, there is certain value, the present invention provides a kind of recovery
The method of side-product methyl phenyl ethers anisole in diphenyl carbonate technique.
The content of the invention
Goal of the invention：The present invention provides a kind of recovery with phenol and dimethyl carbonate as raw material, carbonate production by transesterification
The method of side-product methyl phenyl ethers anisole in diphenyl ester technique.
Technical scheme：A kind of method for reclaiming methyl phenyl ethers anisole in diphenyl carbonate technique, including light component recovery tower（1）, its
It is characterized in that in light component recovery tower（1）Middle and upper part connection side take-off device（3）, side take-off device（3）Outlet is connected to
Methyl phenyl ethers anisole recovery tower（2）Middle and upper part, methyl phenyl ethers anisole recovery tower（2）Middle and lower part connection side take-off device（4）.Wherein, side line
Extraction device（3）Device, side take-off device are produced for gas phase（4）Device is produced for liquid phase.
Advantages of the present invention：Using the side-product methyl phenyl ethers anisole reclaimed compared with low energy consumption in diphenyl carbonate technique.
Description of the drawings
Fig. 1 is kind of the schematic flow sheet for reclaiming the method for side-product methyl phenyl ethers anisole in diphenyl carbonate technique.
The light component recovery tower of reference 1 in figure, 2 methyl phenyl ethers anisole recovery towers, 3 side take-off devices, 4 side take-off devices.
Specific embodiment
After ester-interchange method diphenyl carbonate synthesis process operation is normal, side take-off device is opened（3）, regulate extraction ratio
Example, by 0.1%-the 5% of diphenyl carbonate yield, now needs to adjust light component recovery tower（1）Operating condition, be allowed to it is primary
Matching is produced, due to being that gas phase enters methyl phenyl ethers anisole recovery tower（2）, therefore methyl phenyl ethers anisole recovery tower only needs out the heating amount or not of very little
Open, maintain methyl phenyl ethers anisole recovery tower（2）Run well, reflux ratio treats methyl phenyl ethers anisole recovery tower between 0-2（2）After stable,
The content of analysis side take-off methyl phenyl ethers anisole, after product is qualified, continuous extraction methyl phenyl ethers anisole product.
Claims (3)
1. a kind of method for reclaiming methyl phenyl ethers anisole in diphenyl carbonate technique, including light component recovery tower（1）, it is characterized in that at light group
Divide recovery tower（1）Middle and upper part connection side take-off device（3）, side take-off device（3）Outlet is connected to methyl phenyl ethers anisole recovery tower
（2）Middle and upper part, methyl phenyl ethers anisole recovery tower（2）Middle and lower part connection side take-off device（4）.
2. it is as claimed in claim 1 to reclaim methyl phenyl ethers anisole method, it is characterized in that：Side take-off device（3）Device is produced for gas phase.
3. it is as claimed in claim 1 to reclaim methyl phenyl ethers anisole method, it is characterized in that：Side take-off device（4）Device is produced for liquid phase.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611006126.5A CN106565430A (en) | 2016-11-16 | 2016-11-16 | Method for recovering by-product anisole of diphenyl carbonate technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611006126.5A CN106565430A (en) | 2016-11-16 | 2016-11-16 | Method for recovering by-product anisole of diphenyl carbonate technology |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106565430A true CN106565430A (en) | 2017-04-19 |
Family
ID=58541903
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611006126.5A Pending CN106565430A (en) | 2016-11-16 | 2016-11-16 | Method for recovering by-product anisole of diphenyl carbonate technology |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106565430A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110950759A (en) * | 2019-12-04 | 2020-04-03 | 四川中蓝国塑新材料科技有限公司 | Method for controlling by-product anisole in diphenyl carbonate production |
| CN113577814A (en) * | 2021-08-16 | 2021-11-02 | 四川中蓝国塑新材料科技有限公司 | Diphenyl carbonate recovery device and method for industrial production of polycarbonate |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105503600A (en) * | 2016-03-01 | 2016-04-20 | 屈强好 | Method for producing diphenyl carbonate |
-
2016
- 2016-11-16 CN CN201611006126.5A patent/CN106565430A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105503600A (en) * | 2016-03-01 | 2016-04-20 | 屈强好 | Method for producing diphenyl carbonate |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110950759A (en) * | 2019-12-04 | 2020-04-03 | 四川中蓝国塑新材料科技有限公司 | Method for controlling by-product anisole in diphenyl carbonate production |
| CN113577814A (en) * | 2021-08-16 | 2021-11-02 | 四川中蓝国塑新材料科技有限公司 | Diphenyl carbonate recovery device and method for industrial production of polycarbonate |
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Application publication date: 20170419 |
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