CN108440246A - A kind of separation method of the tert-butyl alcohol - Google Patents
A kind of separation method of the tert-butyl alcohol Download PDFInfo
- Publication number
- CN108440246A CN108440246A CN201810154538.6A CN201810154538A CN108440246A CN 108440246 A CN108440246 A CN 108440246A CN 201810154538 A CN201810154538 A CN 201810154538A CN 108440246 A CN108440246 A CN 108440246A
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- CN
- China
- Prior art keywords
- tert
- butyl alcohol
- butyl
- butyl peroxide
- extractant
- 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.)
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Classifications
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C29/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring
- C07C29/74—Separation; Purification; Use of additives, e.g. for stabilisation
- C07C29/76—Separation; Purification; Use of additives, e.g. for stabilisation by physical treatment
- C07C29/80—Separation; Purification; Use of additives, e.g. for stabilisation by physical treatment by distillation
- C07C29/84—Separation; Purification; Use of additives, e.g. for stabilisation by physical treatment by distillation by extractive distillation
Abstract
The invention discloses a kind of separation methods of the tert-butyl alcohol.The tert-butyl alcohol present in synthesis technology of this method for the tert-butyl alcohol forms the problem of azeotropic mixture is difficult to detach with di-tert-butyl peroxide, by the way that extractant is added, realizes efficiently separating for the tert-butyl alcohol.After separating-purifying, the purity of the tert-butyl alcohol is up to 95% or more, and di-tert-butyl peroxide purity is up to 99% or more.It is an advantage of the invention that using continuous extraction rectificating method separating tert-butanol and di-tert-butyl peroxide, separative efficiency is high, and high income is simple for process.
Description
Technical field
The invention belongs to the processes of chemical separation process, specifically, being the isolation technics for being related to the tert-butyl alcohol.
Background technology
The tert-butyl alcohol also known as 2- methyl-2-propanols are a kind of very important chemicals.Its chemical industry purposes is extremely extensive,
It is used frequently as fuel oil additive, anti-knock agent, organic solvent, synthetic drug or fragrance and prepares the raw material of isobutene.Patent
CN 104402675A disclose a kind of method that bionic catalysis iso-butane selective oxidation prepares the tert-butyl alcohol, in the synthesis technology
Main by-product is di-tert-butyl peroxide.Di-tert-butyl peroxide easily forms azeotropic mixture with the tert-butyl alcohol, such as straight
Row rectifying separation is tapped into, necessarily causes separating effect bad, tert-butyl alcohol yield is low.
Since the tert-butyl alcohol is water-miscible, when carrying out tert-butyl alcohol separation, mostly selection water by the tert-butyl alcohol from mixed
It closes and is extracted in object, then carry out separation of extractive distillation.CN 1621399A, CN 1887834A, CN 104383711A etc. are open
For the extraction rectification technique for the azeotropic mixture that the tert-butyl alcohol is formed with water, but these separating technologies are not all suitable for tertiary fourth
The separation of alcohol and di-tert-butyl peroxide.
To realize being kept completely separate for the tert-butyl alcohol and di-tert-butyl peroxide in tert-butyl alcohol synthesis technology, a kind of separation is developed
The continuous extraction rectificating method of the tert-butyl alcohol and di-tert-butyl peroxide, for realizing that tert-butyl alcohol industrialization has important meaning
Justice.
Invention content
It is an object of the invention to overcome the deficiencies of the prior art and provide a kind of separative efficiency height, the high tert-butyl alcohols of purity
Separation method.
To achieve the above object, the technical solution adopted by the present invention is：
Extractant is added in the mixed liquor of the tert-butyl alcohol and di-tert-butyl peroxide, the extraction in a kind of separation method of the tert-butyl alcohol
The azeotropic mixture that ring is formed between the two can be broken by taking agent, then realize dividing completely for the tert-butyl alcohol and di-tert-butyl peroxide by rectifying
From.
In above-mentioned separation method, preferably, the extractant is one in ethylbenzene, n-butyl ether, n-amylether
Kind.
In above-mentioned separation method, preferably, the mass ratio of the extractant and mixture is 0.5 ~ 10：1.
Compared with prior art, the present invention has the advantages that：The method separating tert-butanol and two tertiary fourths of the present invention
Base peroxide, after separating-purifying, the purity of the tert-butyl alcohol up to 95% or more, di-tert-butyl peroxide purity up to 99% with
On.It is an advantage of the invention that using continuous extraction rectificating method separating tert-butanol and di-tert-butyl peroxide, separative efficiency is high,
High income, it is simple for process.
Specific implementation mode
The present invention is illustrated with following embodiment, but the present invention is not limited to the following embodiments.By three embodiments, to this
The there is provided method of invention is further described.
Embodiment 1
The method of the present invention is used for the separation process of the tert-butyl alcohol and di-tert-butyl peroxide.The tert-butyl alcohol and di-tert-butyl peroxide
The treating capacity of object mixed liquor is 150 kg/h, and wherein the mass fraction of the tert-butyl alcohol is 80%, the quality point of di-tert-butyl peroxide
Number is 20%；Extractant is n-butyl ether, mixed liquor and extractant it is preheated after obtained after rectifying detaches into extractive distillation column
The tert-butyl alcohol product purity arrived is 97.21 wt%, and di-tert-butyl peroxide product purity is 99.51 wt%.
Embodiment 2
The method of the present invention is used for the separation process of the tert-butyl alcohol and di-tert-butyl peroxide.The tert-butyl alcohol and di-tert-butyl peroxide
The treating capacity of object mixed liquor is 150 kg/h, and wherein the mass fraction of the tert-butyl alcohol is 70%, the quality point of di-tert-butyl peroxide
Number is 30%.Extractant is n-butyl ether, mixed liquor and extractant it is preheated after obtained after rectifying detaches into extractive distillation column
The tert-butyl alcohol product purity arrived is 95.45 wt%, and di-tert-butyl peroxide product purity is 99.03 wt%.
Embodiment 3
The method of the present invention is used for the separation process of the tert-butyl alcohol and di-tert-butyl peroxide.The tert-butyl alcohol and di-tert-butyl peroxide
The treating capacity of object mixed liquor is 150 kg/h, and wherein the mass fraction of the tert-butyl alcohol is 75%, the quality point of di-tert-butyl peroxide
Number is 25%.Extractant is n-butyl ether, mixed liquor and extractant it is preheated after obtained after rectifying detaches into extractive distillation column
The tert-butyl alcohol product purity arrived is 96.26wt%, and di-tert-butyl peroxide product purity is 99.03wt%.
Claims (3)
1. a kind of separation method of the tert-butyl alcohol, it is characterised in that：Add in the mixture of the tert-butyl alcohol and di-tert-butyl peroxide
Enter extractant, which can destroy the azeotropic mixture formed between the two, to realize the tert-butyl alcohol and two by the method for rectifying
Tert-butyl peroxide is kept completely separate.
2. separation method as described in claim 1, which is characterized in that the extractant is in ethylbenzene, n-butyl ether, n-amylether
One kind.
3. separation method as described in claim 1, which is characterized in that the mass ratio of the extractant and mixture be 0.5 ~
10：1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810154538.6A CN108440246B (en) | 2018-02-23 | 2018-02-23 | Separation method of tert-butyl alcohol |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810154538.6A CN108440246B (en) | 2018-02-23 | 2018-02-23 | Separation method of tert-butyl alcohol |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108440246A true CN108440246A (en) | 2018-08-24 |
| CN108440246B CN108440246B (en) | 2021-06-25 |
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ID=63192700
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810154538.6A Active CN108440246B (en) | 2018-02-23 | 2018-02-23 | Separation method of tert-butyl alcohol |
Country Status (1)
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114763333A (en) * | 2021-01-15 | 2022-07-19 | 万华化学集团股份有限公司 | Separation and recovery method of peroxide TBHP and byproduct TBA in styrene oxide mother liquor |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4810809A (en) * | 1986-12-23 | 1989-03-07 | Texaco Inc. | Ditertiary butyl peroxide recovery |
| US5312998A (en) * | 1993-06-10 | 1994-05-17 | Arco Chemical Technology, L.P. | Integrated process for the production of ditertiary butyl peroxide |
-
2018
- 2018-02-23 CN CN201810154538.6A patent/CN108440246B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4810809A (en) * | 1986-12-23 | 1989-03-07 | Texaco Inc. | Ditertiary butyl peroxide recovery |
| US5312998A (en) * | 1993-06-10 | 1994-05-17 | Arco Chemical Technology, L.P. | Integrated process for the production of ditertiary butyl peroxide |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114763333A (en) * | 2021-01-15 | 2022-07-19 | 万华化学集团股份有限公司 | Separation and recovery method of peroxide TBHP and byproduct TBA in styrene oxide mother liquor |
| CN114763333B (en) * | 2021-01-15 | 2023-05-26 | 万华化学集团股份有限公司 | Separation and recovery method of peroxide TBHP and byproduct TBA in epoxy phenylethane mother liquor |
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| Publication number | Publication date |
|---|---|
| CN108440246B (en) | 2021-06-25 |
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