CN207596754U - A kind of pressure outer circulation reactor in n-propyl acetate production - Google Patents
A kind of pressure outer circulation reactor in n-propyl acetate production Download PDFInfo
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- CN207596754U CN207596754U CN201721556136.6U CN201721556136U CN207596754U CN 207596754 U CN207596754 U CN 207596754U CN 201721556136 U CN201721556136 U CN 201721556136U CN 207596754 U CN207596754 U CN 207596754U
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- esterification
- esterifying kettle
- heater
- heating device
- falling film
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Abstract
A kind of pressure outer circulation reactor in being produced the utility model is related to n-propyl acetate, including esterifying kettle, it is esterified falling film heating device, it is esterified circulating pump and extracting tower, the esterification falling film heating device is arranged on esterifying kettle upper end entry position, the esterifying kettle bottom is equipped with material outlet, the material outlet connection esterification pump entry, it is esterified circulating-pump outlet connection esterification falling film heating device, the esterifying kettle upper end is equipped with ascending vapor pipe and liquid-phase reflux pipe, the ascending vapor pipe and liquid-phase reflux pipe are connected to depickling tower bottom, its generate advantageous effect be, solve the problems, such as that heater is evenly heated esterification material, it avoids generating hot-spot in esterification reaction solution heating process；It solves the problems, such as to wash away using heater generation during normal propyl alcohol lighter component；Avoid the problem that built-in heater generates hot-spot and brings more side reaction；Built-in heater is avoided to generate hot-spot and generate coking, coking impurity deposits to heater surfaces and generates fouling, and heater, which even occurs, for increase thermal resistance can not give thermal phenomenon.
Description
Technical field
The utility model is related to strong in normal propyl alcohol esterification device field more particularly to a kind of production of n-propyl acetate
Outer circulation reactor processed.
Background technology
When using normal propyl alcohol lighter component production n-propyl acetate, the internal-circulation type heater that uses at present, using heating
Coil pipe immerse esterification reaction solution in or using heating tube bundle be inserted into esterifying kettle reaction solution in, to be esterified kettle liquid heating completely by pair
Stream, temperature gradient come realize esterifying kettle heat up, caused by consequence heating tube be easy to the gaseous phase materials erosion corrosion being raised, can also
Generate situations such as local reaction temperature of charge is excessively high, and side reaction relatively mostly occurs.
Utility model content
The purpose of this utility model is to provide the pressure outer circulations in a kind of n-propyl acetate production for heating up uniform
Reactor.
To achieve the above object, the pressure outer circulation reactor in the production of the utility model n-propyl acetate, feature exist
In：Including esterifying kettle, esterification falling film heating device, esterification circulating pump and extracting tower, the esterification falling film heating device is arranged on esterification
Kettle upper end entry position, the esterifying kettle bottom are equipped with material outlet, the material outlet connection esterification pump entry, esterification
Circulating-pump outlet connection esterification falling film heating device, the esterifying kettle upper end be equipped with ascending vapor pipe and liquid-phase reflux pipe, it is described on
It rises gas phase pipe and liquid-phase reflux pipe is connected to depickling tower bottom.
In order to improve cycle efficieny, the esterification circulating pump is two, and two esterification circulating pumps are arranged in parallel in esterifying kettle
Between esterification falling film heating device.
Further, the esterification falling film heating device includes heating layer and material bed, and the heating layer is set around material bed
It puts, heating steam is passed through in the heating layer.
The utility model, mainly have the advantage that：
It solves the problems, such as that heater is evenly heated esterification material, avoids generation office in esterification reaction solution heating process
Portion overheats；
It solves the problems, such as larger using gasification materiel during normal propyl alcohol lighter component and heater generation is washed away；
Avoid the problem that built-in heater generates hot-spot and brings more side reaction；
Built-in heater is avoided to generate hot-spot and generate coking, coking impurity deposits to heater surfaces and generates knot
Dirt, heater, which even occurs, for increase thermal resistance can not give thermal phenomenon.
Description of the drawings
Fig. 1 is the structure diagram of the utility model.
In figure：1 is esterifying kettle, and 2 be esterification falling film reactor, and 21 be heating layer, and 22 be material bed, and 3 be esterification circulating pump,
4 be liquid-phase reflux pipe, and 5 be extracting tower, and 6 be ascending vapor pipe.
Specific embodiment
Such as Fig. 1, the pressure outer circulation reactor in the n-propyl acetate production of the utility model, mainly by esterifying kettle 1, ester
Change falling film heating device, esterification circulating pump 3 and extracting tower 5 to form, wherein esterification circulating pump 3 is two, 3 entrance of esterification circulating pump is simultaneously
Connection is connected to the outlet of 1 bottoms material of esterifying kettle, and outlet is connect with esterification falling film heating device entrance, and esterification falling film heating device is arranged on
1 material inlet position of esterifying kettle.It is esterified falling film heating device and includes heating layer 21 and material bed 22, heating layer 21 is around material bed 22
Setting, heating layer 21 are shell side, and material bed 22 be tube side, and high-temperature steam is passed through in heating layer 21, and 1 upper end of esterifying kettle, which is equipped with, to be risen
Gas phase pipe 6 and liquid-phase reflux pipe 4, ascending vapor pipe 6 and liquid-phase reflux pipe 4 are all connected to 5 bottom of extracting tower.
In actual use, material is recycled the present apparatus by two esterification circulating pumps 3, is followed by two esterifications
Ring pump 3 carries out efficient esterification cyclic process, the Matter Transfer of complete 1 liquid of tenfold esterifying kettle product in a hour.
Recycle stock enters in the tube side of falling film heating device, and high-temperature steam is passed through in the shell side of tube side, carries out material
It with the heat exchange of high-temperature steam, realizes and material is heated, and the material for passing through heating brings heat in reaction kettle of the esterification into, carry out ester
Change and react, in reaction process, the unreacted raw material in part rises, and lead to reacting the n-propyl of calculating quickly of generation with water co-gasification
Ascending vapor pipe 6 is crossed to enter in extracting tower 5, and the secondary response again in extracting tower 5.5 bottom of extracting tower is also enriched in phase simultaneously
The liquid-phase reflux pipe 4 of the reactants such as acetic acid from 5 bottom of extracting tower is reentered in esterifying kettle 1, and it is anti-to carry out esterification cycle again
It should.
Claims (3)
1. a kind of pressure outer circulation reactor in n-propyl acetate production, it is characterised in that：Add including esterifying kettle, esterification falling liquid film
Hot device, esterification circulating pump and extracting tower, the esterification falling film heating device are arranged on esterifying kettle upper end entry position, the esterifying kettle
Bottom is equipped with material outlet, the material outlet connection esterification pump entry, and esterification circulating-pump outlet connection esterification falling liquid film adds
Hot device, the esterifying kettle upper end are equipped with ascending vapor pipe and liquid-phase reflux pipe, and the ascending vapor pipe is connected with liquid-phase reflux pipe
To depickling tower bottom.
2. the pressure outer circulation reactor in n-propyl acetate production according to claim 1, it is characterised in that：The ester
It is two to change circulating pump, and two esterification circulating pumps are arranged in parallel between esterifying kettle and esterification falling film heating device.
3. the pressure outer circulation reactor in n-propyl acetate production according to claim 1, it is characterised in that：The ester
Change falling film heating device and include heating layer and material bed, heating steam is passed through in the heating layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721556136.6U CN207596754U (en) | 2017-11-20 | 2017-11-20 | A kind of pressure outer circulation reactor in n-propyl acetate production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721556136.6U CN207596754U (en) | 2017-11-20 | 2017-11-20 | A kind of pressure outer circulation reactor in n-propyl acetate production |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207596754U true CN207596754U (en) | 2018-07-10 |
Family
ID=62761033
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721556136.6U Active CN207596754U (en) | 2017-11-20 | 2017-11-20 | A kind of pressure outer circulation reactor in n-propyl acetate production |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207596754U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108704596A (en) * | 2018-08-15 | 2018-10-26 | 赵乾康 | Phosphorus pentasulfide environmental protection and energy saving processing technology and equipment |
-
2017
- 2017-11-20 CN CN201721556136.6U patent/CN207596754U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108704596A (en) * | 2018-08-15 | 2018-10-26 | 赵乾康 | Phosphorus pentasulfide environmental protection and energy saving processing technology and equipment |
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