CN204111626U - A kind of methanol esterification reactor - Google Patents
A kind of methanol esterification reactor Download PDFInfo
- Publication number
- CN204111626U CN204111626U CN201420665859.XU CN201420665859U CN204111626U CN 204111626 U CN204111626 U CN 204111626U CN 201420665859 U CN201420665859 U CN 201420665859U CN 204111626 U CN204111626 U CN 204111626U
- Authority
- CN
- China
- Prior art keywords
- vent pipe
- connects
- upstream side
- membrane module
- esterifying kettle
- 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.)
- Active
Links
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The utility model provides a kind of methanol esterification reactor, comprises esterifying kettle, and the outlet of this esterifying kettle comprises two groups: one group and connects alcohol-water separation assembly; One group connects esterified prod vent pipe; Described alcohol-water separation assembly comprises membrane module, this membrane module is divided into independent up and down and through upstream side and downstream side, the outlet of esterifying kettle connects the upstream side of this membrane module, described upstream side, downstream side are all connected with vent pipe, and the vent pipe of this upstream side connects the top of esterifying kettle and forms loop line.Compared to the prior art, energy consumption is low for this methanol esterification reactor, and the water that separating reaction generates, without the need to providing thermal source in addition, reacts the heat generated; Process simplification, whole use procedure can realize automatic control, practical.
Description
Technical field
The utility model relates to methyl alcohol and participates in the reaction unit of esterification, specifically simple, practical, the methanol esterification reactor of a kind of structure.
Background technology
It is a class basis organic synthesis process that organic acid and alcohols carry out esterification under the effect of an acidic catalyst.Under normal circumstances, the reaction of this class is thermopositive reaction, is also typical balanced reaction, has heat to release in reaction, have water to generate.In order to enable reaction go on smoothly, must immediately remove the water generated in reaction process, otherwise system just having a large amount of raw material and ester coexists, greatly can increase equipment investment and the aftertreatment expense of aftertreatment like this.When the boiling point of reactant is higher than water, the method by the azeotropic of raw material goes out water-band, and a large amount of raw materials also can be retained in system and participate in reaction further.When can work as the esterification having methyl alcohol to participate in, the boiling point (64.7 DEG C) of material benzenemethanol is far below water, and when by adding thermal distillation and removing moisture content, methyl alcohol more easily leaves system, the result of distilling is that the suppression ratio water of material benzenemethanol also wants fast, does not reach the object improving feed stock conversion.Industrial in order to realize raising transformation efficiency, adopt distillation and drip back methyl alcohol and carry out simultaneously.Namely while while steaming first alcohol and water, in system, add methyl alcohol, ensure carrying out smoothly of reaction with this.The shortcoming of this method is that energy consumption is high, in order to shift out moisture content, simultaneously methyl alcohol must be made also to evaporate in a large number, this just needs a large amount of heats, Cai and the mixture of the first alcohol and water steamed have to pass through again rectification and purification recoverable.And point rate of methyl alcohol is very high in this mixture, wants methyl alcohol to steam, also must have large steam output.Based on this, now provide a kind of methanol esterification reactor, this reactor, in the esterification having methyl alcohol to participate in, utilizes the heat of esterification self that the water generated in esterification is separated from system, thus makes esterification smooth.
Summary of the invention
Technical assignment of the present utility model solves the deficiencies in the prior art, provides a kind of practical, methanol esterification reactor.
The technical solution of the utility model realizes in the following manner, and a kind of methanol esterification reactor, comprises esterifying kettle, and the outlet of this esterifying kettle comprises two groups: one group and connects alcohol-water separation assembly; One group connects esterified prod vent pipe; Described alcohol-water separation assembly comprises membrane module, this membrane module is divided into independent up and down and through upstream side and downstream side, the outlet of esterifying kettle connects the upstream side of this membrane module, described upstream side, downstream side are all connected with vent pipe, and the vent pipe of this upstream side connects the top of esterifying kettle and forms loop line.
As preferably, the vent pipe in described downstream side connects vapor-liquid separation mechanism, this vapor-liquid separation mechanism comprises the condenser be connected with downstream side, the vapour liquid separator be connected with condenser, the outlet of described vapour liquid separator is divided into two branch roads: a road is not condensing vent pipe, and this condensing vent pipe is not provided with vacuum pump; Another road is water shoot.
As preferably, described membrane module is the hyperfiltration membrane assembly of infiltrating and vaporizing membrane composition.
The beneficial effect that the utility model is compared with prior art produced is:
A kind of methanol esterification reactor of the present utility model have structure simple, easy to use, be skillfully constructed, the feature such as reasonable in design, energy consumption is low, the water that separating reaction generates without the need to providing thermal source in addition, the heat that reaction generates; Process simplification, whole use procedure can realize automatic control; Speed of response is fast, and the time is short, and owing to directly removing the water that reaction generates in reaction process, instead of water and methyl alcohol are removed, therefore methyl alcohol maintains higher concentration in systems in which, is conducive to the carrying out reacted simultaneously; Practical, applied widely, be easy to promote.
Accompanying drawing explanation
Accompanying drawing 1 is structural representation of the present utility model.
Mark in accompanying drawing represents respectively:
1, esterifying kettle, 2, membrane module, 2.1, upstream side, 2.2, downstream side, 3, esterified prod vent pipe, 4, condenser, 5, vapour liquid separator, 6, not condensing vent pipe, 7, vacuum pump, 8, water shoot.
Embodiment
Below in conjunction with accompanying drawing, a kind of methanol esterification reactor of the present utility model is described in detail below.
As shown in Figure 1, a kind of methanol esterification reactor, comprises esterifying kettle 1, and the outlet of this esterifying kettle 1 comprises two groups: one group and connects alcohol-water separation assembly; One group connects esterified prod vent pipe 3; Described alcohol-water separation assembly comprises membrane module 2, this membrane module 2 is divided into independent up and down and through upstream side 2.1 and downstream side 2.2, the outlet of esterifying kettle 1 connects the upstream side 2.1 of this membrane module 2, described upstream side 2.1, downstream side 2.2 are all connected with vent pipe, and the vent pipe of this upstream side 2.1 connects the top of esterifying kettle 1 and forms loop line.
The vent pipe in described downstream side 2.2 connects vapor-liquid separation mechanism, this vapor-liquid separation mechanism comprises the condenser 4 be connected with downstream side 2.2, the vapour liquid separator 5 be connected with condenser 4, the outlet of described vapour liquid separator 5 is divided into two branch roads: a road is not condensing vent pipe 6, and this condensing vent pipe 6 is not provided with vacuum pump 7; Another road is water shoot 8.
The hyperfiltration membrane assembly that described membrane module 2 forms for infiltrating and vaporizing membrane.
Reactor in the utility model, in the esterification having methyl alcohol to participate in, utilizes the heat of esterification self that the water generated in esterification is separated from system, thus makes esterification smooth.It utilizes, and first alcohol and water dissolves in certain films material, the difference of diffusion, acted on through film by dissolving, diffusion, volatilization, desorb etc. under steam pressure difference and concentration gradient etc. promote, water is overflowed in gaseous form and enters the opposite side of film, thus realize water to separate from system.
The concrete operating process of this equipment is as follows:
By the upstream side 2.1 of membrane module in the material pump delivery of esterification to infiltration evaporation device, the downstream side 2.2 of film makes liquid ingredient form chemical potential difference in the both sides of film with the form vacuumized, and the water in reaction solution enters the opposite side of film by processes such as dissolving, diffusion, volatilization, desorbs and separates.The liquid of upstream side 2.1 returns reactor and proceeds esterification.Water containing a small amount of methyl alcohol goes recovery system.In the disposable input reactor of raw material organic acid, catalyzer, methyl alcohol can drop in reactor according to different reactions in batches, under agitation esterification occurs, esterification liquid recycle pump is transported to the upstream side 2.1 of membrane module, gets back in reaction kettle of the esterification after sloughing moisture content.In infiltration evaporation device, under the effect of the chemical pressure reduction that the water in reaction solution is formed in vacuum, the downstream side 2.2 of film is entered by processes such as dissolving, diffusion, volatilization, desorbs, the heat vaporization that the water entering downstream side 2.2 utilizes reaction to generate under vacuo becomes water vapor, water vapor is condensed into liquid in condenser 4, liquid is discharged through vapour liquid separator 5 and is sent to Methanol Recovery, and condensing is not discharged through vacuum pump 7.After reaction terminates, esterifying liquid discharges aftertreatment by esterified prod vent pipe 3.
Finally should be noted that; above content is only in order to illustrate the technical solution of the utility model; but not the restriction to the utility model protection domain; although this embodiment part has been done to explain to the utility model; those of ordinary skill in the art is to be understood that; can modify to the technical solution of the utility model or equivalent replacement, these do not depart from essence and the scope of technical solutions of the utility model.
Claims (3)
1. a methanol esterification reactor, comprises esterifying kettle, it is characterized in that, the outlet of this esterifying kettle comprises two groups: one group and connects alcohol-water separation assembly; One group connects esterified prod vent pipe; Described alcohol-water separation assembly comprises membrane module, this membrane module is divided into independent up and down and through upstream side and downstream side, the outlet of esterifying kettle connects the upstream side of this membrane module, described upstream side, downstream side are all connected with vent pipe, and the vent pipe of this upstream side connects the top of esterifying kettle and forms loop line.
2. a kind of methanol esterification reactor according to claim 1, it is characterized in that, the vent pipe in described downstream side connects vapor-liquid separation mechanism, this vapor-liquid separation mechanism comprises the condenser be connected with downstream side, the vapour liquid separator be connected with condenser, the outlet of described vapour liquid separator is divided into two branch roads: a road is not condensing vent pipe, and this condensing vent pipe is not provided with vacuum pump; Another road is water shoot.
3. a kind of methanol esterification reactor according to claim 1, is characterized in that, described membrane module is the hyperfiltration membrane assembly of infiltrating and vaporizing membrane composition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420665859.XU CN204111626U (en) | 2014-11-10 | 2014-11-10 | A kind of methanol esterification reactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420665859.XU CN204111626U (en) | 2014-11-10 | 2014-11-10 | A kind of methanol esterification reactor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204111626U true CN204111626U (en) | 2015-01-21 |
Family
ID=52328960
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420665859.XU Active CN204111626U (en) | 2014-11-10 | 2014-11-10 | A kind of methanol esterification reactor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204111626U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104804876A (en) * | 2015-02-25 | 2015-07-29 | 成都格瑞思文化传播有限公司 | Esterification reaction device |
| CN114160055A (en) * | 2021-10-27 | 2022-03-11 | 岳阳职业技术学院 | Membrane dryer, intermittent esterification reaction system and dimethyl adipate preparation method |
-
2014
- 2014-11-10 CN CN201420665859.XU patent/CN204111626U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104804876A (en) * | 2015-02-25 | 2015-07-29 | 成都格瑞思文化传播有限公司 | Esterification reaction device |
| CN114160055A (en) * | 2021-10-27 | 2022-03-11 | 岳阳职业技术学院 | Membrane dryer, intermittent esterification reaction system and dimethyl adipate preparation method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9266803B2 (en) | Liquid separation by membrane assisted vapor stripping process | |
| JP5369765B2 (en) | Method for purifying fermentation alcohol | |
| TW200922680A (en) | Low-energy extractive distillation process for dehydration of aqueous ethanol | |
| JP2009263355A (en) | Method for purification-treating fermentation alcohol | |
| JP2010159212A (en) | Method for separating alcohol | |
| CN111792685B (en) | System and method for continuously recycling NMP from NMP wastewater | |
| CN107628946A (en) | The method and device of reactive distillation film device coupling production ethyl acetate in high purity | |
| TW201034736A (en) | Apparatus and method for recovery of acetic acid, from an aqueous solution thereof | |
| JP7136258B2 (en) | Method and apparatus for producing organic carboxylic acid aqueous solution | |
| CN103342631A (en) | Process for separating propylene glycol monomethyl ether aqueous solution by using double membrane coupling technology | |
| CN104926653A (en) | Reaction and steam osmotic dehydration coupled ethyl hexanoate synthesizing process and device | |
| CN204111626U (en) | A kind of methanol esterification reactor | |
| CN108059597A (en) | A kind of reactive distillation integrates the method and its device of production ethyl acetate with infiltration evaporation | |
| JPH0634898B2 (en) | Concentrator / dehydrator for organic / aqueous mixed solutions | |
| JP2014226574A (en) | Concentration method of water-soluble organic substance and concentration apparatus of water-soluble organic substance | |
| CN106117120B (en) | A kind of technique and device of rectifying-Steam soak coupled method recycling pyridine | |
| CN102191340A (en) | Method for removing inhibitors in prehydrolysis liquid of lignocellulose | |
| US20120101312A1 (en) | Method and system for producing methanol and dimethyl ether | |
| CN104926655A (en) | Technology and device for diethyl oxalate synthesis through vapor permeation dehydration process | |
| TWI577436B (en) | Separation device | |
| CN108947774B (en) | Method and device for separating isopropanol | |
| CN103613480B (en) | Device and method for recycling low-concentration organic solvent | |
| JP2017533202A (en) | Decomposition of methanol / methyl methacrylate azeotrope using pressure swing distillation | |
| JP2780323B2 (en) | Method for producing concentrated aqueous solution of volatile organic liquid | |
| CN104341268B (en) | A kind of alcohol fuel continuous dehydration method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |