CN110054556A - A kind of novel hexone dewatering process - Google Patents
A kind of novel hexone dewatering process Download PDFInfo
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- CN110054556A CN110054556A CN201910191596.0A CN201910191596A CN110054556A CN 110054556 A CN110054556 A CN 110054556A CN 201910191596 A CN201910191596 A CN 201910191596A CN 110054556 A CN110054556 A CN 110054556A
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C45/00—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds
- C07C45/78—Separation; Purification; Stabilisation; Use of additives
- C07C45/81—Separation; Purification; Stabilisation; Use of additives by change in the physical state, e.g. crystallisation
- C07C45/82—Separation; Purification; Stabilisation; Use of additives by change in the physical state, e.g. crystallisation by distillation
- C07C45/84—Separation; Purification; Stabilisation; Use of additives by change in the physical state, e.g. crystallisation by distillation by azeotropic distillation
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- Organic Chemistry (AREA)
- Crystallography & Structural Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The invention discloses a kind of novel hexone dewatering process, comprising the following steps: S01 is entered after mixing crude isobutyl ketone and isopropanol except water tower；S02, except isopropanol, hexone and water carry out three-phase azeotropic in water tower；S03, the mixture of isopropyl alcohol and water is entered from tower top carries out organic phase and aqueous phase separation in phase separator；S04, water phase come out from phase separator, and organic phase comes back to from except water tower reflux except in water tower；S05, except the crude isobutyl ketone of complete water is gone out from the tower bottom except water tower.A kind of novel hexone dewatering process provided by the invention can reduce hexone water removal cost.
Description
Technical field
The present invention relates to a kind of novel hexone dewatering process, belong to water removal tower process field.
Background technique
Hexone (MIBK) is carried out before purification except water process.As shown in Figure 1, first in the prior art
The water tower original of removing of base isobutyl ketone (MIBK) process units is removed water with isopropyl ether (IPE) as entrainer, and process system needs
It please additionally purchase addition supplement isopropyl ether (IPE) to use as the entrainer except water tower, reach and product moisture is removed effect, this will
It will increase production cost and material consumption.
Summary of the invention
The technical problem to be solved by the present invention is to overcome the deficiencies of existing technologies, providing one kind can reduce methyl tert-butyl
The novel hexone dewatering process of base ketone water removal cost and material consumption.
In order to solve the above technical problems, the technical solution adopted by the present invention are as follows:
A kind of novel hexone dewatering process, comprising the following steps:
S01 is entered after mixing crude isobutyl ketone and isopropanol except water tower；
S02, except isopropanol, hexone and water carry out three-phase azeotropic in water tower；
S03, the mixture of isopropyl alcohol and water is entered from tower top carries out organic phase and aqueous phase separation in phase separator；
S04, water phase come out from phase separator, and isopropanol organic phase comes back to from except water tower effluent entrance except in water tower；
S05, except the crude isobutyl ketone of complete water is gone out from the tower bottom except water tower.
In S01, the volume ratio of crude isobutyl ketone and isopropanol is 90:2.
In S02, except 120~140 DEG C of tower bottom operation temperature of water tower.
In S02, except 70~110 DEG C of tower top operation temperature of water tower.
In S02, except the operating pressure of water tower is 0.01~0.1MPa.
S01, isopropanol are the by-product that acetone through one-step method produces hexone technological reaction.
Beneficial effects of the present invention: the present invention provides a kind of novel hexone dewatering process, selects methyl different
Butyl ketone and isopropanol mixing are directly entered except water tower, compared to isopropyl ether is added by phase separator before, have operation
Simple advantage.In addition, isopropanol is the by-product that acetone through one-step method produces hexone technological reaction, it directly can be with
It obtains, does not need to buy entrainer again, can reduce production cost and material consumption.
Detailed description of the invention
Fig. 1 is the water removal tower process figure of hexone in the prior art；
Fig. 2 is a kind of water removal tower process figure of novel hexone dewatering process of the present invention.
Specific embodiment
Specific embodiment 1
As shown in Fig. 2, a kind of novel hexone dewatering process, comprising the following steps: step 1, by crude first
It is entered after base isobutyl ketone and isopropanol mixing except water tower, isopropanol is that acetone through one-step method produces hexone work
The volume ratio of the by-product of skill reaction, crude isobutyl ketone and isopropanol is 90:2.
Step 2, except isopropanol, hexone and water carry out three-phase azeotropic in water tower, except the tower bottom operation of water tower
120~140 DEG C of temperature, preferably 120 DEG C；Except 70~110 DEG C of tower top operation temperature of water tower, preferably 70 DEG C；Except water tower
Operating pressure is 0.01~0.1MPa, preferably 0.01MPa.
Step 3, the mixture of isopropyl alcohol and water is entered from tower top carries out organic phase and aqueous phase separation in phase separator.
Step 4, water phase come out from phase separator, and organic phase comes back to from except water tower reflux except in water tower.
Step 5, except the crude isobutyl ketone of complete water is gone out from the tower bottom except water tower.
Specific embodiment 2
As shown in Fig. 2, a kind of novel hexone dewatering process, comprising the following steps: step 1, by crude first
It is entered after base isobutyl ketone and isopropanol mixing except water tower, isopropanol is that acetone through one-step method produces hexone work
The volume ratio of the by-product of skill reaction, crude isobutyl ketone and isopropanol is 90:2.
Step 2, except isopropanol, hexone and water carry out three-phase azeotropic in water tower, except the tower bottom operation of water tower
120~140 DEG C of temperature, preferably 130 DEG C；Except 70~110 DEG C of tower top operation temperature of water tower, preferably 90 DEG C；Except water tower
Operating pressure is 0.01~0.1MPa, preferably 0.05MPa.
Step 3, the mixture of isopropyl alcohol and water is entered from tower top carries out organic phase and aqueous phase separation in phase separator.
Step 4, water phase come out from phase separator, and organic phase comes back to from except water tower reflux except in water tower.
Step 5, except the crude isobutyl ketone of complete water is gone out from the tower bottom except water tower.
Specific embodiment 3
As shown in Fig. 2, a kind of novel hexone dewatering process, comprising the following steps: step 1, by crude first
It is entered after base isobutyl ketone and isopropanol mixing except water tower, isopropanol is that acetone through one-step method produces hexone work
The volume ratio of the by-product of skill reaction, crude isobutyl ketone and isopropanol is 90:2.
Step 2, except isopropanol, hexone and water carry out three-phase azeotropic in water tower, except the tower bottom operation of water tower
120~140 DEG C of temperature, preferably 140 DEG C；Except 70~110 DEG C of tower top operation temperature of water tower, preferably 110 DEG C；Except water tower
Operating pressure is 0.01~0.1MPa, preferably 0.1MPa.
Step 3, the mixture of isopropyl alcohol and water is entered from tower top carries out organic phase and aqueous phase separation in phase separator.
Step 4, water phase come out from phase separator, and organic phase comes back to from except water tower reflux except coming back in water tower
Except in water tower.
Step 5, except the crude isobutyl ketone of complete water is gone out from the tower bottom except water tower.
The above is only a preferred embodiment of the present invention, it should be pointed out that: for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (6)
1. a kind of novel hexone dewatering process, it is characterised in that: the following steps are included:
S01 is entered after mixing crude isobutyl ketone and isopropanol except water tower；
S02, except isopropanol, hexone and water carry out three-phase azeotropic in water tower；
S03, the mixture of isopropyl alcohol and water is entered from tower top carries out organic phase and aqueous phase separation in phase separator；
S04, water phase come out from phase separator, and organic phase comes back to from except water tower reflux except in water tower；
S05, except the crude isobutyl ketone of complete water is gone out from the tower bottom except water tower.
2. a kind of novel hexone dewatering process according to claim 1, it is characterised in that: crude in S01
The volume ratio of hexone and isopropanol is 90:2.
3. a kind of novel hexone dewatering process according to claim 1, it is characterised in that: in S02, water removal
120~140 DEG C of the tower bottom operation temperature of tower.
4. a kind of novel hexone dewatering process according to claim 1, it is characterised in that: in S02, water removal
70~110 DEG C of the tower top operation temperature of tower.
5. a kind of novel hexone dewatering process according to claim 1, it is characterised in that: in S02, water removal
The operating pressure of tower is 0.01~0.1MPa.
6. a kind of novel hexone dewatering process according to claim 1, it is characterised in that: S01, isopropanol
The by-product of hexone technological reaction is produced for acetone through one-step method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910191596.0A CN110054556A (en) | 2019-03-14 | 2019-03-14 | A kind of novel hexone dewatering process |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910191596.0A CN110054556A (en) | 2019-03-14 | 2019-03-14 | A kind of novel hexone dewatering process |
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| CN110054556A true CN110054556A (en) | 2019-07-26 |
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| CN201910191596.0A Pending CN110054556A (en) | 2019-03-14 | 2019-03-14 | A kind of novel hexone dewatering process |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1951893A (en) * | 2005-10-19 | 2007-04-25 | 中国石油化工股份有限公司 | Process for separating methylisobutanone synthesized from acetone |
| CN101117309A (en) * | 2006-08-04 | 2008-02-06 | 中国石油天然气股份有限公司 | Dehydrating plant of methyl isobutyl ketone synthetic liquid |
| CN101376623A (en) * | 2007-08-31 | 2009-03-04 | 中国石油天然气股份有限公司 | Method for separating methyl isobutyl ketone synthetic fluid |
| CN105130778A (en) * | 2015-08-31 | 2015-12-09 | 宁波镇洋化工发展有限公司 | Production process of methyl isobutyl ketone |
-
2019
- 2019-03-14 CN CN201910191596.0A patent/CN110054556A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1951893A (en) * | 2005-10-19 | 2007-04-25 | 中国石油化工股份有限公司 | Process for separating methylisobutanone synthesized from acetone |
| CN101117309A (en) * | 2006-08-04 | 2008-02-06 | 中国石油天然气股份有限公司 | Dehydrating plant of methyl isobutyl ketone synthetic liquid |
| CN101376623A (en) * | 2007-08-31 | 2009-03-04 | 中国石油天然气股份有限公司 | Method for separating methyl isobutyl ketone synthetic fluid |
| CN105130778A (en) * | 2015-08-31 | 2015-12-09 | 宁波镇洋化工发展有限公司 | Production process of methyl isobutyl ketone |
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Application publication date: 20190726 |
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| RJ01 | Rejection of invention patent application after publication |