CN206886992U - Methyl chloroacetate production reaction and rectification device - Google Patents
Methyl chloroacetate production reaction and rectification device Download PDFInfo
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- CN206886992U CN206886992U CN201720663896.0U CN201720663896U CN206886992U CN 206886992 U CN206886992 U CN 206886992U CN 201720663896 U CN201720663896 U CN 201720663896U CN 206886992 U CN206886992 U CN 206886992U
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- tower body
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- unit tower
- methyl chloroacetate
- steam
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
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Abstract
A kind of methyl chloroacetate production reaction and rectification device,The device includes tower body,Drainer,Byproduct temporary storage tank,The tower body is followed successively by rectifying section from top to bottom,Conversion zone,Methanol feed zone,Conversion zone includes the single-unit tower body second that at least 3 section length are L,Methanol feed zone is the single-unit tower body first of a section L length,Uppercap body is provided with the upper section tower body upper end of rectifying section,Center is provided with methyl chloroacetate steam outlet pipe at the top of the uppercap body,The steam outlet pipe connects condenser,Condenser is provided with liquid chloroacetic acid methyl esters collecting pipe and return duct,The sidepiece of the return duct other end through uppercap body enters uppercap body,Heating jacket is provided with outside described single-unit tower body second,The methyl chloroacetate production rectifier unit of the utility model,Using distilling period,The thinking that conversion zone is vertically superimposed,And steam heating and condensing reflux are combined to control the vapo(u)rizing temperature of inside,It is achieved thereby that the continuous production of methyl chloroacetate,Improve production efficiency,Reach the purpose of energy-conservation simultaneously.
Description
Technical field
The technical field of methyl chloroacetate production equipment is the utility model is related to, is given birth to more particularly to a kind of methyl chloroacetate
Production reaction and rectification device.
Background technology
Methyl chloroacetate is mainly used in synthetic pesticide Rogor, the intermediate sulphur phosphide of omethoate, oxygen sulphur phosphorus on agricultural chemicals
Ester and chloracetyl methylamine, in addition, as a kind of organic synthesis raw material, the preparation of medicine, bonding agent, surfactant is also used for,
Also act as solvent.
Methyl chloroacetate is made by monoxone with methanol through esterification.In the prior art by methanol and monoxone by weight
Added than well mixed in reactor, agitating and heating, carry out esterification.Reaction first puts into second reactor to enter to be about to chlorine
Methyl acetate is separated, and is distilled after separation into distillation equipment, and whole production process is turned over to cover by tank switching three times
Go, its production technology can not realize continuous production, and high energy consumption, have much room for improvement.
Utility model content
To solve the above problems, the purpose of this utility model is to propose that a kind of methyl chloroacetate production is filled with reactive distillation
Put.
The technical solution of the utility model is as follows：A kind of methyl chloroacetate production reaction and rectification device, the device include
Tower body, drainer, byproduct temporary storage tank, the tower body is followed successively by rectifying section, conversion zone, methanol feed zone from top to bottom, described
Rectifying section includes the single-unit tower body first that at least one section length is L, and described conversion zone includes the single tower that at least 3 section length are L
Body second, methanol feed zone are the single-unit tower body first of a section L length, and uppercap body, cap on this are provided with the upper section tower body upper end of rectifying section
Center is provided with methyl chloroacetate steam outlet pipe, steam outlet pipe connection condenser at the top of body, and condenser is provided with liquid chloroacetic acid
Methyl esters collecting pipe and return duct, the sidepiece of the return duct other end through uppercap body enter uppercap body, and described byproduct is kept in
Tank is connected to the tower body bottom of methanol feed zone, is provided with heating jacket outside described single-unit tower body second, heating jacket is provided with
Steam inlet and outlet connection high-temperature steam source；It is serially connected between heating jacket between adjacent single-unit tower body second；Described 3 meters≤
L≤5 meter；Described rectifying section, conversion zone, methanol feed zone are filled with structured packing；The list of described conversion zone the top
The upper end sidepiece of section tower body second is provided with monoxone feed pipe, and the lower end sidepiece of described methanol feed zone is provided with methanol feed pipe.
Preferably, the steam inlet outside described single-unit tower body second is on the top of chuck, and steam (vapor) outlet is under chuck
Portion, neighbouring two single-unit tower body second, the steam (vapor) outlet of single-unit tower body second above and the steaming of following single-unit tower body second
Vapor inlet vertical position is corresponding, is connected between the two by vertical connecting tube.
Preferably, described rectifying section includes the single-unit tower body first that two section length are L；The described conversion zone stated includes 4
Save the single-unit tower body second that length is L, L=4 meter.
It is of the present utility model to have the technical effect that：
The methyl chloroacetate production reaction and rectification device of the utility model, is vertically superimposed using distilling period, conversion zone
Thinking, and steam heating and condensing reflux are combined to control the vapo(u)rizing temperature of inside, it is achieved thereby that methyl chloroacetate is continuous
Metaplasia is produced, and improves production efficiency, operation difficulty in the production process of reduction, reaches the purpose of energy-conservation.
Brief description of the drawings
Fig. 1 is the methyl chloroacetate production reaction and rectification device structural representation；
1. uppercap bodies, 2. rectifying sections, 3. conversion zones, 4. methanol feed zones, 5. times cap bodies, 6. byproducts are temporary in figure
Deposit tank, 7. single-unit tower body first, 8. single-unit tower body second, 8-1. steam inlets, 8-2. chucks, 8-3. steam (vapor) outlets, 9. vertically connect
Adapter, 10. monoxone inlet pipes.11. methanol inlet pipe, 12. return ducts, 13. condensers.
Embodiment
It is new to this practicality below in conjunction with accompanying drawing to make the purpose of this utility model, technical scheme and advantage clearer
Type embodiment is described in further detail.
Embodiment one：Referring to Fig. 1, a kind of methyl chloroacetate production reaction and rectification device in figure, the device include tower body,
Drainer, byproduct temporary storage tank, the tower body are followed successively by rectifying section, conversion zone, methanol feed zone, described rectifying section from top to bottom
The single-unit tower body first for being L including at least one section length, described conversion zone include the single-unit tower body second that at least 3 section length are L, first
Alcohol feed zone is the single-unit tower body first of a section L length, uppercap body is provided with the upper section tower body upper end of rectifying section, uppercap body top is just
In be provided with methyl chloroacetate steam outlet pipe, steam outlet pipe connection condenser, condenser is provided with the collection of liquid chloroacetic acid methyl esters
Pipe and return duct, the sidepiece of the return duct other end through uppercap body enter uppercap body, and described byproduct temporary storage tank is connected to
The tower body bottom of methanol feed zone, described single-unit tower body second outside are provided with heating jacket, and heating jacket passes in and out provided with steam
Mouth connection high-temperature steam source；It is serially connected between heating jacket between adjacent single-unit tower body second；3 meters described≤L≤5 meter；
Described rectifying section, conversion zone, methanol feed zone are filled with structured packing；The single-unit tower body second of described conversion zone the top
Upper end sidepiece be provided with monoxone feed pipe, the lower end sidepiece of described methanol feed zone is provided with methanol feed pipe.
Steam inlet outside described single-unit tower body second is on the top of chuck, and steam (vapor) outlet is in the bottom of chuck, up and down
Two adjacent single-unit tower body second, the steam (vapor) outlet of single-unit tower body second above and the steam inlet of following single-unit tower body second erect
To position correspondence, connected between the two by vertical connecting tube, so the shape of section single-unit tower body second is identical with structure up and down, can
To adjust the length of conversion zone at any time as needed, it can be connected in correspondence with each other after being reversed between adjacent section when connection, letter
Just, while the steam pipework between single-unit tower body is connected in series together folk prescription up and down, can make full use of steam heat, energy-saving effect
It is good.
Described rectifying section includes the single-unit tower body first that two section length are L；The described conversion zone stated includes 4 section length
L single-unit tower body second, L=4 meter.
The course of work：
Methanol is entered in tower body from bottom, and the monoxone autoreaction section top of molten condition is entered in tower body, chloroethene
Acid is descending along the gap of filler under gravity, because the effect of high-temperature heating becomes steam along between filler after methanol entrance
Gap is up, with membranaceous monoxone fully contacts carry out fast reaction during up, generates gaseous chloroethene in high temperature environments
Sour methyl esters, gaseous methyl chloroacetate is up to go out tower body after the rectifying section on top, is condensed into then into condenser
Liquid, the methyl chloroacetate of small part liquid returns to through return duct carries out cooling temperature adjustment to rectifying section tower top in tower body, ensures high
The monoxone of boiling point is in conversion zone all the time, and then ensures that the qualified methyl chloroacetate that whole reaction obtains high-purity is collected.
Claims (3)
1. a kind of methyl chloroacetate production reaction and rectification device, the device includes tower body, drainer, byproduct temporary storage tank, its
It is characterized in：The tower body is followed successively by rectifying section, conversion zone, methanol feed zone from top to bottom, and described rectifying section includes at least one section
Length is L single-unit tower body first, and described conversion zone includes the single-unit tower body second that at least 3 section length are L, and methanol feed zone is one
The single-unit tower body first of section L length, described 3 meters≤L≤5 meter；Uppercap body, the uppercap body are provided with the upper section tower body upper end of rectifying section
Top center is provided with methyl chloroacetate steam outlet pipe, steam outlet pipe connection condenser, and condenser is provided with liquid chloroacetic acid first
Ester collecting pipe and return duct, the sidepiece of the return duct other end through uppercap body enter uppercap body, described byproduct temporary storage tank
The tower body bottom of methanol feed zone is connected to, heating jacket is provided with outside described single-unit tower body second, heating jacket, which is provided with, to be steamed
Vapour inlet and outlet connection high-temperature steam source；It is serially connected between heating jacket between adjacent single-unit tower body second；Described rectifying section,
Conversion zone, methanol feed zone are filled with ceramic filler；The upper end side of the single-unit tower body second of described conversion zone the top
Portion is provided with monoxone feed pipe, and the lower end sidepiece of described methanol feed zone is provided with methanol feed pipe.
2. methyl chloroacetate production reaction and rectification device according to claim 1, it is characterized in that：Described single-unit tower body
Steam inlet outside second is on the top of chuck, and steam (vapor) outlet is in the bottom of chuck, neighbouring two single-unit tower body second, on
The steam (vapor) outlet of the single-unit tower body second in face is corresponding with the steam inlet vertical position of following single-unit tower body second, passes through between the two
Vertical connecting tube connection.
3. methyl chloroacetate production reaction and rectification device according to claim 1, it is characterized in that：Described rectifying section bag
Include the single-unit tower body first that two section length are L；The described conversion zone stated includes the single-unit tower body second that 4 section length are L, L=4 meter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720663896.0U CN206886992U (en) | 2017-06-09 | 2017-06-09 | Methyl chloroacetate production reaction and rectification device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720663896.0U CN206886992U (en) | 2017-06-09 | 2017-06-09 | Methyl chloroacetate production reaction and rectification device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206886992U true CN206886992U (en) | 2018-01-16 |
Family
ID=61317896
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720663896.0U Active CN206886992U (en) | 2017-06-09 | 2017-06-09 | Methyl chloroacetate production reaction and rectification device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206886992U (en) |
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2017
- 2017-06-09 CN CN201720663896.0U patent/CN206886992U/en active Active
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