CN205368196U - Aftertreatment recovery unit of n butane oxidation method production cis -butenedioic anhydride - Google Patents
Aftertreatment recovery unit of n butane oxidation method production cis -butenedioic anhydride Download PDFInfo
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- CN205368196U CN205368196U CN201521041171.5U CN201521041171U CN205368196U CN 205368196 U CN205368196 U CN 205368196U CN 201521041171 U CN201521041171 U CN 201521041171U CN 205368196 U CN205368196 U CN 205368196U
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- tower
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- butenedioic anhydride
- desorber
- absorption tower
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Abstract
The utility model provides an aftertreatment recovery unit of n butane oxidation method production cis -butenedioic anhydride, include vapour and liquid separator, absorption tower, storage tank, desorber, film evaporator, take off light component tower, rectifying column, vapour and liquid separator's upper end exit linkage absorption tower, lower extreme exit linkage storage tank, the top of the tower series connection desorber on absorption tower, the top of the tower series connection of analytic tower takes off the light component tower, take off the lower extreme export series connection rectifying column of light component tower, the lower extreme export series connection film evaporator of analytic tower and rectifying column, the tower cauldron thing of desorber and rectifying column is in film evaporator handles back recovery to absorption tower. The device structural design is reasonable, can retrieve the purification to the result, avoids uncooled cis -butenedioic anhydride to discharge along with tail gas, causes the waste and the loss of result, and the solvent that adopts in the absorption tower simultaneously can recycle, and the consumption of practicing thrift chemical solvent reduces the pollution to the air.
Description
Technical field
This utility model belongs to technical field of chemical, relates to a kind of post processing retracting device, relates generally to a kind of n butane oxidation method and produces the post processing retracting device of cis-butenedioic anhydride.
Background technology
Prior art, maleic anhydride production technique is mainly as benzene oxidatoin method and two kinds of main production process of n butane oxidation method by raw material route.The production technology of general benzene oxidatoin method is big to the broken harmful property of environment, replaced by n butane oxidation method gradually, but the method that currently butane method produces cis-butenedioic anhydride, there is a comparatively serious problem, reaction after the cis-butenedioic anhydride cooling produced generates gas and enters in cis-butenedioic anhydride aftercooler, wherein the gaseous state cis-butenedioic anhydride of about 50% is condensed the thick acid anhydride of formation, gas containing uncooled cis-butenedioic anhydride enters and is formed along acid solution after absorbing along acid elution tower, due to without total condensation, will result in portion of product to be carried out with tail gas, cause the reduction of productivity, have a strong impact on benefit, need to design a kind of simple and easy to operate retracting device to reclaim uncooled cis-butenedioic anhydride, at utmost reduce the waste to cis-butenedioic anhydride and the pollution to environment.
Utility model content
For the problems referred to above, the purpose of this utility model is in that to provide kind of a post processing retracting device, relate generally to a kind of n butane oxidation method and produce the post processing retracting device of cis-butenedioic anhydride, this apparatus structure is reasonable in design, and can carry out product reclaiming and purify, avoid uncooled cis-butenedioic anhydride to discharge with tail gas, cause waste and the loss of product.
This utility model solves above-mentioned technical problem and be the technical scheme is that
A kind of n butane oxidation method produces the post processing retracting device of cis-butenedioic anhydride, it is characterised in that include gas-liquid separator, absorption tower, storage tank, desorber, membrane evaporator, cut light tower, rectifying column；The upper end outlet of described gas-liquid separator connects absorption tower, and lower end outlet connects storage tank, and the tower top on described absorption tower is connected in series desorber, and the tower top of described Analytic Tower is connected in series cut light tower；The lower end outlet of described cut light tower is connected in series rectifying column, and the lower end outlet of described Analytic Tower and rectifying column is connected in series membrane evaporator, and the tower reactor thing of described desorber and rectifying column is recycled in absorption tower after membrane evaporator processes；Tower reactor thing in described Analytic Tower is recycled in absorption tower, and solvent is repeated utilizing.
Further, described gas-liquid separator can only by cis-butenedioic anhydride partial condensation.
Further, described absorption tower, for uncooled cis-butenedioic anhydride gas is carried out solvent absorption, carries out processing and reclaims.
Further, in described absorption tower adopt solvent be in dibutyl phthalate or diisobutyl phthalate any one.
Further, the rough cis-butenedioic anhydride that the condensation of described storage tank storage obtains.
The utility model has the advantage of:
This utility model n butane oxidation method produces the post processing retracting device of cis-butenedioic anhydride, this apparatus structure is reasonable in design, and can carry out product reclaiming and purify, avoid uncooled cis-butenedioic anhydride to discharge with tail gas, cause waste and the loss of product, by the product collected is carried out rectification separation, obtain pure cis-butenedioic anhydride product, the solvent simultaneously adopted in absorption tower can be recycled, and saves the consumption of chemical solvent, reduces the pollution to air.
Accompanying drawing explanation
In order to be illustrated more clearly that this utility model detailed description of the invention or technical scheme of the prior art, the accompanying drawing used required in detailed description of the invention or description of the prior art will be briefly described below, apparently, accompanying drawing in the following describes is embodiments more of the present utility model, for those of ordinary skill in the art, under the premise not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the structural representation that this utility model n butane oxidation method produces the post processing retracting device of cis-butenedioic anhydride.
Wherein: 1. gas-liquid separator 2. absorption tower 3. storage tank 4. desorber
5. membrane evaporator 6. cut light tower 7. rectifying column
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, this utility model done concrete introduction.
A kind of n butane oxidation method produces the post processing retracting device of cis-butenedioic anhydride, it is characterised in that include gas-liquid separator 1, absorption tower 2, storage tank 3, desorber 4, membrane evaporator 5, cut light tower 6, rectifying column 7；The upper end outlet of described gas-liquid separator 1 connects absorption tower 2, and lower end outlet connects storage tank 3, and the tower top on described absorption tower 2 is connected in series desorber 4, and the tower top of described Analytic Tower 4 is connected in series cut light tower 6；The lower end outlet of described cut light tower 6 is connected in series rectifying column 7, and the outlet of the lower end of described Analytic Tower 4 and rectifying column 7 is connected in series membrane evaporator 5, the tower reactor thing of described desorber 4 and rectifying column 7 after membrane evaporator 5 processes by solvent recovery to absorption tower 2；Tower reactor thing in described Analytic Tower 4 is recycled in absorption tower 2, and solvent is repeated utilizing.
Further, described gas-liquid separator can only by cis-butenedioic anhydride partial condensation.
Further, described absorption tower, for uncooled cis-butenedioic anhydride gas is carried out solvent absorption, carries out processing and reclaims.
Further, in described absorption tower adopt solvent be in dibutyl phthalate or diisobutyl phthalate any one.
Further, the rough cis-butenedioic anhydride that the condensation of described storage tank storage obtains.
Operation principle: the cis-butenedioic anhydride steam of generation is through gas-liquid separation, partial condensation is stored to storage tank, the cis-butenedioic anhydride steam having not enough time to condensation can from tower top to absorption tower, adopt dibutyl phthalate solvent that cis-butenedioic anhydride is carried out absorption process, tower reactor thing is to Analytic Tower afterwards, solvent and cis-butenedioic anhydride are carried out desorbing process, and solvent recovery, to absorption tower, recycles；The cis-butenedioic anhydride simultaneously steamed by desorber is combined into cut light tower with the rough cis-butenedioic anhydride liquid in storage tank, steams cis-butenedioic anhydride fraction, enters in rectifying column and carries out refinement treatment；Absorption tower is carried out burning disposal with the tower top Litter in cut light tower；Simultaneously the tower reactor thing in desorber and rectifying column processes through membrane evaporator, and gained solvent recovery reuses to absorption tower.
This utility model is not limited to above-mentioned detailed description of the invention, and those skilled in the art also can make multiple change accordingly, but any is equal to this utility model or similar change all should be encompassed in this utility model scope of the claims.
Claims (3)
1. the post processing retracting device of a n butane oxidation method production cis-butenedioic anhydride, it is characterised in that include gas-liquid separator, absorption tower, storage tank, desorber, membrane evaporator, cut light tower, rectifying column；The upper end outlet of described gas-liquid separator connects absorption tower, and lower end outlet connects storage tank, and the tower top on described absorption tower is connected in series desorber, and the tower top of described desorber is connected in series cut light tower；The lower end outlet of described cut light tower is connected in series rectifying column, and the lower end outlet of described desorber and rectifying column is connected in series membrane evaporator, and the tower reactor thing of described desorber and rectifying column is recycled in absorption tower after membrane evaporator processes；Tower reactor thing in described desorber is recycled in absorption tower, and solvent is repeated utilizing.
2. according to claim 1 a kind of n butane oxidation method produce cis-butenedioic anhydride post processing retracting device, it is characterised in that in described absorption tower adopt solvent be in dibutyl phthalate or diisobutyl phthalate any one.
3. a kind of n butane oxidation method produces the post processing retracting device of cis-butenedioic anhydride according to claim 1, it is characterised in that the rough cis-butenedioic anhydride that the storage condensation of described storage tank obtains.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521041171.5U CN205368196U (en) | 2015-12-11 | 2015-12-11 | Aftertreatment recovery unit of n butane oxidation method production cis -butenedioic anhydride |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521041171.5U CN205368196U (en) | 2015-12-11 | 2015-12-11 | Aftertreatment recovery unit of n butane oxidation method production cis -butenedioic anhydride |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205368196U true CN205368196U (en) | 2016-07-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521041171.5U Expired - Fee Related CN205368196U (en) | 2015-12-11 | 2015-12-11 | Aftertreatment recovery unit of n butane oxidation method production cis -butenedioic anhydride |
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| Country | Link |
|---|---|
| CN (1) | CN205368196U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114100167A (en) * | 2021-11-26 | 2022-03-01 | 郑朝生 | Energy-saving maleic anhydride absorption deep analysis refining process |
-
2015
- 2015-12-11 CN CN201521041171.5U patent/CN205368196U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114100167A (en) * | 2021-11-26 | 2022-03-01 | 郑朝生 | Energy-saving maleic anhydride absorption deep analysis refining process |
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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: 20160706 Termination date: 20161211 |
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| CF01 | Termination of patent right due to non-payment of annual fee |