CN202527174U - Reaction kettle for detachably producing D-ethyl ester by using DL-ethyl ester - Google Patents
Reaction kettle for detachably producing D-ethyl ester by using DL-ethyl ester Download PDFInfo
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- CN202527174U CN202527174U CN2012201377088U CN201220137708U CN202527174U CN 202527174 U CN202527174 U CN 202527174U CN 2012201377088 U CN2012201377088 U CN 2012201377088U CN 201220137708 U CN201220137708 U CN 201220137708U CN 202527174 U CN202527174 U CN 202527174U
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- ethyl ester
- feed liquid
- kettle
- methanol
- liquid circulation
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Abstract
A reaction kettle for detachably producing D-ethyl ester by using DL-ethyl ester comprises a kettle body with a stirring device, a hot water interlayer is arranged on the kettle body, a feed liquid circulation inlet and a methanol steam outlet are arranged on the upper portion of the kettle body, a feed liquid circulation outlet is arranged at the bottom, and a circulation pump and a falling film evaporator are arranged on the pipeline between the feed liquid circulation inlet and the feed liquid circulation outlet; and a methanol recovery unit is connected to the methanol steam outlet. According to the reaction kettle, D-ethyl ester decomposition caused by long time heating can be prevented, the purity and the quality of the product are improved, simultaneously, the utilization rate of the methanol is improved, and the production cost id reduced.
Description
Technical field
The utility model relates to D-ethyl ester production technical field, is specifically related to the agitated reactor of DL-ethyl ester fractionation usefulness in the D-ethyl ester production process.
Background technology
D-ethyl ester, full name D-are the intermediates of Thiamphenicol to methylsulfonyl benzene serine ethyl ester, mainly are used for producing Thiamphenicol or Florfenicol and continuity product.
At present, utilizing absolute ethyl alcohol, methylsulfonyl benzene serine mantoquita and the concentrated sulfuric acid are carried out esterification finally generate the DL-ethyl ester, is to produce requisite one procedure in the D-ethyl ester process, and the later stage then need split the DL-ethyl ester.
In traditional resolution process, agitated reactor is provided with heater, utilizes methyl alcohol to accomplish as solvent and splits operation.But because the D-ethyl ester is the higher chemicals of a kind of thermal sensitivity, so in the traditional handicraft, heated time is longer in agitated reactor, is easy to decompose, and causes the purity of final products to reduce, and is second-rate.
The utility model content
The utility model technical problem to be solved provides and is used for the agitated reactor that the DL-ethyl ester splits production D-ethyl ester, and it can reduce heated time, prevents that the D-ethyl ester from decomposing, thereby eliminates defective in the above-mentioned background technology.
For solving the problems of the technologies described above, the technical scheme of the utility model is:
Be used for the DL-ethyl ester and split the agitated reactor of producing the D-ethyl ester; Comprise kettle with agitating device; Said kettle is provided with the hot water interlayer, it is characterized in that, the top of said kettle is provided with feed liquid circulation import and methanol steam outlet; The bottom is provided with the feed liquid loop exit, and the pipeline between said feed liquid circulation import and the feed liquid loop exit is provided with circulating pump and falling film evaporator; Said methanol steam outlet is connected with the Methanol Recovery unit.
As a kind of improvement, said Methanol Recovery unit comprises shell and tube condenser and the spiral sheet condenser that connects in regular turn, and said shell and tube condenser is connected with the methanol steam outlet of kettle.
In the utility model, said agitating device comprises the shaft that is arranged at said kettle axial location, and the top power of said shaft is connected with drive motors.
The utility model feeds hot water in the hot water interlayer of kettle when work, be used to the inner feed liquid heating of kettle; The shell side of falling film evaporator feeds heat medium, and feed liquid heats through tube side.
Owing to adopted technique scheme, the beneficial effect of the utility model is:
The agitated reactor that the utility model provides is applicable in the D-ethyl ester process that the DL-ethyl ester splits operation, and it is provided with circulating pump and falling film evaporator between the feed liquid circulation import of kettle and feed liquid loop exit; In the falling film evaporator; Feed liquid becomes evenly membranaceous and flows from top to bottom under gravity and vacuum induced and air-flow effect, can realize rapid, the evenly heating of feed liquid; Can reduce the heated time of feed liquid; Prevent D-ethyl ester decomposes, thereby improved the purity of D-ethyl ester product, improved the quality of final products; And the methanol steam outlet is connected with the Methanol Recovery unit, can simultaneously methyl alcohol be reclaimed huge profit usefulness, has improved production efficiency.
The DL-ethyl ester that is used for that the utility model provides splits the agitated reactor of producing the D-ethyl ester; The Methanol Recovery unit comprises shell and tube condenser and the spiral sheet condenser that connects in regular turn; Can effectively methyl alcohol be carried out condensation and purify, avoid the waste of methyl alcohol, improve utilization rate.
Description of drawings
Accompanying drawing is the utility model structural representation;
Among the figure: 1. kettle, 2. hot water interlayer, 3. feed liquid circulation import, 4. methanol steam outlet, 5. feed liquid loop exit, 6. circulating pump, 7. falling film evaporator, 8. shell and tube condenser, 9. spiral sheet condenser, 10. shaft, 11. drive motors.
The specific embodiment
For technological means, creation characteristic that the utility model is realized, reach purpose and be easy to understand understanding with effect, below in conjunction with concrete diagram, further set forth the utility model.
Shown in accompanying drawing; Be used for the DL-ethyl ester and split the agitated reactor of producing the D-ethyl ester, comprise the kettle 1 with agitating device, said kettle 1 is provided with hot water interlayer 2; It is characterized in that; The top of said kettle 1 is provided with feed liquid circulation import 3 and methanol steam outlet 4, and the bottom is provided with feed liquid loop exit 5, and the pipeline between said feed liquid circulation import 3 and the feed liquid loop exit 5 is provided with circulating pump 6 and falling film evaporator 7; Said methanol steam outlet 4 is connected with the Methanol Recovery unit.The shell side of falling film evaporator 7 feeds heat medium, and feed liquid heats through tube side, and feed liquid is under gravity and vacuum induced and air-flow effect; Becoming evenly membranaceous flows from top to bottom; Thereby realize rapid, the evenly heating of feed liquid, can reduce the heated time of feed liquid, prevent D-ethyl ester decomposes; Thereby improved the purity of D-ethyl ester product, improved the quality of final products.
In the present embodiment, said Methanol Recovery unit comprises the shell and tube condenser 8 and spiral sheet condenser 9 that connects in regular turn, and said shell and tube condenser 8 is connected with the methanol steam outlet 4 of kettle 1.Shell and tube condenser 8 can effectively carry out condensation with methyl alcohol with spiral sheet condenser 9 purifies, and has avoided the waste of methyl alcohol, has improved the utilization rate of methyl alcohol.
In the present embodiment, said agitating device comprises the shaft 10 that is arranged at said kettle 1 axial location, and the top power of said shaft 10 is connected with drive motors 11.
The utility model is not limited to the above-mentioned specific embodiment, and all are based on the technical conceive of the utility model, and the structural improvement of having done all falls among the protection domain of the utility model.
Claims (2)
1. be used for the DL-ethyl ester and split the agitated reactor of producing the D-ethyl ester; Comprise kettle with agitating device; Said kettle is provided with the hot water interlayer; It is characterized in that: the top of said kettle is provided with feed liquid circulation import and methanol steam outlet, and the bottom is provided with the feed liquid loop exit, and the pipeline between said feed liquid circulation import and the feed liquid loop exit is provided with circulating pump and falling film evaporator; Said methanol steam outlet is connected with the Methanol Recovery unit.
2. the DL-ethyl ester that is used for as claimed in claim 1 splits the agitated reactor of producing the D-ethyl ester; It is characterized in that: said Methanol Recovery unit comprises shell and tube condenser and the spiral sheet condenser that connects in regular turn, and said shell and tube condenser is connected with the methanol steam outlet of kettle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201377088U CN202527174U (en) | 2012-04-01 | 2012-04-01 | Reaction kettle for detachably producing D-ethyl ester by using DL-ethyl ester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201377088U CN202527174U (en) | 2012-04-01 | 2012-04-01 | Reaction kettle for detachably producing D-ethyl ester by using DL-ethyl ester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202527174U true CN202527174U (en) | 2012-11-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201377088U Expired - Fee Related CN202527174U (en) | 2012-04-01 | 2012-04-01 | Reaction kettle for detachably producing D-ethyl ester by using DL-ethyl ester |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202527174U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103861300A (en) * | 2014-02-27 | 2014-06-18 | 天津大学 | Online tons-level traditional Chinese medicine anti-wall-hanging evaporation and concentration device and operating method thereof |
| CN108355364A (en) * | 2018-02-01 | 2018-08-03 | 昆明理工大学 | A kind of residual heat utilization-type methanol evaporator |
-
2012
- 2012-04-01 CN CN2012201377088U patent/CN202527174U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103861300A (en) * | 2014-02-27 | 2014-06-18 | 天津大学 | Online tons-level traditional Chinese medicine anti-wall-hanging evaporation and concentration device and operating method thereof |
| CN103861300B (en) * | 2014-02-27 | 2016-04-06 | 天津大学 | A kind of online anti-wall built-up evaporation concentration device of ton Chinese medicine and method of operating |
| CN108355364A (en) * | 2018-02-01 | 2018-08-03 | 昆明理工大学 | A kind of residual heat utilization-type methanol evaporator |
| CN108355364B (en) * | 2018-02-01 | 2020-04-07 | 昆明理工大学 | Waste heat utilization type methanol evaporator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121114 Termination date: 20150401 |
|
| EXPY | Termination of patent right or utility model |