CN109293512A - Esters of acrylic acid product production device - Google Patents
Esters of acrylic acid product production device Download PDFInfo
- Publication number
- CN109293512A CN109293512A CN201811504241.4A CN201811504241A CN109293512A CN 109293512 A CN109293512 A CN 109293512A CN 201811504241 A CN201811504241 A CN 201811504241A CN 109293512 A CN109293512 A CN 109293512A
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- gas
- liquid
- shell
- tube reactor
- liquid separator
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C67/00—Preparation of carboxylic acid esters
- C07C67/08—Preparation of carboxylic acid esters by reacting carboxylic acids or symmetrical anhydrides with the hydroxy or O-metal group of organic compounds
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
This application discloses esters of acrylic acid product production device, including shell and tube reactor and injector, the injector connects with the feed inlet of shell and tube reactor, and the injector is used to for raw material to be injected into progress liquid film reaction in shell and tube reactor.The invention has the following beneficial effects: use shell and tube reactor, and reaction raw materials are the liquid filmization reactions carried out in shell and tube reactor, the usage amount for significantly reducing reaction solution reduces the yield of the three wastes in reaction process, and the phenomenon that be not in polymerization in reaction process.
Description
Technical field
The present invention relates to field of chemical equipment more particularly to a kind of esters of acrylic acid product production devices.
Background technique
Acrylate, methyl acrylic ester product are a kind of polymer monomers haveing excellent performance, and general synthetic method is
Acrylic acid (methacrylic acid), which reacts under acidic catalyst effect with alcohol or hydroxyl, generates ester.Production this kind of product uses at present
Acryloyl chloride (methacrylic chloride) is reacted with alcohol or hydroxyl does not need higher temperature, but reacts generally in nonaqueous solvents
Middle progress, equipment used are common reaction kettle, need to be added a large amount of alkali into reaction kettle (with solution in reaction process
Form heaven) it is used as acid binding agent, due to needing to use a large amount of solution, so the more three wastes can be generated, simultaneously because
It carries out in a kettle, will appear polymerism during the reaction.
Summary of the invention
The present invention is in view of the above-mentioned problems, propose a kind of esters of acrylic acid product production device.
The technical solution adopted by the present invention is as follows:
A kind of esters of acrylic acid product production device, including shell and tube reactor and injector, the injector and tubulation
The feed inlet of formula reactor connects, and the injector is used to for raw material to be injected into progress liquid film reaction in shell and tube reactor.
It should be noted that the shell and tube reactor of the present apparatus belongs to existing apparatus, setting in the tubulation of shell and tube reactor
There is filler, when reaction raw materials (liquid) are after injector spirt shell and tube reactor, liquid passes through in shell and tube reactor
Distribution grid enters tubulation, forms liquid film in tubulation wall and filler surface, is reacted by way of liquid film, the reaction of liquid film
Form can reduce the usage amount of solution, greatly reduce the yield of the three wastes, while during the reaction be not in polymerization
Phenomenon.
The present apparatus due to use shell and tube reactor, and reaction raw materials shell and tube reactor be carry out liquid filmization it is anti-
It answers, significantly reduces the usage amount of reaction solution, reduce the yield of the three wastes in reaction process, and will not go out in reaction process
The phenomenon that now polymerizeing.
It optionally, further include the first gas-liquid separator, the feed end and shell and tube reactor of first gas-liquid separator
Top exit connect, the outlet side of the first gas-liquid separator connects with raw material recovery device, the first gas-liquid separator go out liquid
End connects with the liquid return hole of shell and tube reactor.
Shell and tube reactor is in a vertical state when in use, and the top exit of shell and tube reactor is located at the upper of reactor
At end.What is left from top exit is the mixture of pure and mild ester, and the mixture of the two enters the first gas-liquid point as a vapor
From device, low-boiling alcohol (gaseous state) enters raw material recovery device, and high boiling ester (liquid condition) continues traveling downwardly leads to again
It crosses liquid return hole and enters in shell and tube reactor that the reaction was continued.
Optionally, raw material recovery device include the first condenser and recycling storage tank, the outlet end of first condenser with
Recycling storage tank connects, and the input end of first condenser connects with the first gas-liquid separator.
Low-boiling alcohol by gaseous state is transformed into liquid condition after the processing of the first condenser, then liquid alcohol into
Enter to recycle storage tank and further recycle.
It optionally, further include the second gas-liquid separator, the feed end and shell and tube reactor of second gas-liquid separator
Outlet at bottom connect, the outlet end of the second gas-liquid separator connects with product collecting device, second gas-liquid separator
Outlet side connects with the input end of the first condenser.
The liquid-type left from outlet at bottom contains the liquid of product, in this partially liq still containing it is more can be again
The alcohol utilized, so the second gas-liquid separator of setting, so as to enter the first condenser in gaseous form further for this part alcohol
Condensation utilizes.
Optionally, the product collecting device includes collecting tank and the second condenser, the input end of second condenser
Connect with the outlet end of the second gas-liquid separator, the outlet end of the second condenser connects with collecting tank.
Because still temperature is higher from the liquid (product is located in this partially liq) that the second gas-liquid separator flows out,
So further being utilized after reducing the temperature of this partially liq using the second condenser.
It optionally, further include diaphragm pump, second gas-liquid separator passes through the bottom of diaphragm pump and shell and tube reactor
Outlet connects, and the diaphragm pump is for the liquid flowed out in shell and tube reactor to be delivered in the second gas-liquid separator.
Optionally, further include sprayer, the sprayer is provided between the diaphragm pump and the second gas-liquid separator, and
The sprayer is set on the feed end of the second gas-liquid separator, and the liquid that sprayer is used to come diaphragm pump conveying is with liquid
The form of mist is injected into the second gas-liquid separator.
Optionally, the injector is venturi-type eductors.
Optionally, further include gas tank and heat exchanger, described heat exchanger one end connects with gas tank, heat exchanger it is another
End connects with the gas feed of tubular heat exchanger；Inert gas is stored in the gas tank, the heat exchanger is for being fed
Enter the inert gas heating of shell and tube reactor.
Inert gas used in this programme preferentially uses nitrogen, and the purpose in the present apparatus with nitrogen is in order to will to be located at
The material of shell and tube reactor bottom blows to top and is reacted, and whole process is similar to the reaction in ebullated bed.
It is reacted it should be noted that the present apparatus is used in using acrylic acid (methacrylic acid) with alcohol or hydroxyl to prepare
Acrylate, methyl acrylic ester product, while also using the present apparatus when the such product of ester-interchange method.
The beneficial effects of the present invention are: using shell and tube reactor, and reaction raw materials are to carry out in shell and tube reactor
Liquid filmization reaction, significantly reduce the usage amount of reaction solution, reduce the yield of the three wastes in reaction process, and reacted
The phenomenon that being not in polymerization in journey.
Detailed description of the invention:
Fig. 1 is esters of acrylic acid product production device schematic diagram.
Each appended drawing reference in figure are as follows: 1, reactor, 101, top exit, 102, liquid return hole, 103, outlet at bottom, 2, Wen Qiu
In injector, the 301, first gas-liquid separator, the 302, second gas-liquid separator, the 401, first condenser, the 402, second condenser,
5, recycling storage tank, 6, collecting tank, 7, diaphragm pump, 8, sprayer, 9, gas tank, 10, heat exchanger, 11, pressure reducing valve, 12, flowmeter,
13, raw material mixing kettle, 14, delivery pump.
Specific embodiment:
Below with reference to each attached drawing, the present invention will be described in detail.
A kind of esters of acrylic acid product production device, including shell and tube reactor 1 and injector, the injector and tubulation
The feed inlet of formula reactor 1 connects, and it is anti-that the injector is used to for raw material being injected into progress liquid filmization in shell and tube reactor 1
It answers.
It should be noted that the shell and tube reactor 1 of the present apparatus belongs to existing apparatus, set in the tubulation of shell and tube reactor 1
It is equipped with filler, when reaction raw materials (liquid) are after injector spirt shell and tube reactor 1, liquid passes through shell and tube reactor 1
Interior distribution grid enters tubulation, forms liquid film in tubulation wall and filler surface, is reacted by way of liquid film, liquid film
Reaction formation can reduce the usage amount of solution, greatly reduce the yield of the three wastes, while being not in during the reaction
Polymerism.
The present apparatus is due to using shell and tube reactor 1, and reaction raw materials are the liquid films carried out in shell and tube reactor 1
Reaction, significantly reduces the usage amount of reaction solution, reduces the yield of the three wastes in reaction process, and will not in reaction process
The phenomenon that polymerizeing.
It as shown in Fig. 1, further include the first gas-liquid separator 301, the feed end and column of first gas-liquid separator 301
The top exit 101 of tubular reactor 1 connects, and the outlet side of the first gas-liquid separator 301 connects with raw material recovery device, and first
The outlet end of gas-liquid separator 301 connects with the liquid return hole 102 of shell and tube reactor 1.
Shell and tube reactor 1 is in a vertical state when in use, and the top exit 101 of shell and tube reactor 1 is located at reaction
At the upper end of device 1.What is left from top exit 101 is the mixture of pure and mild ester, and the mixture of the two enters as a vapor
First gas-liquid separator 301, low-boiling alcohol (gaseous state) enter raw material recovery device, high boiling ester (liquid condition) after
Continuous downlink is again through the reaction was continued in the entrance shell and tube reactor 1 of liquid return hole 102.
As shown in Fig. 1, raw material recovery device includes the first condenser 401 and recycling storage tank 5, first condenser
401 outlet end connects with recycling storage tank 5, and the input end of first condenser 401 connects with the first gas-liquid separator 301.
Low-boiling alcohol is transformed into liquid condition by gaseous state after the processing of the first condenser 401, then liquid
Alcohol enters recycling storage tank 5 and further recycles.
It as shown in Fig. 1, further include the second gas-liquid separator 302, the feed end and column of second gas-liquid separator 302
The outlet at bottom 103 of tubular reactor 1 connects, and the outlet end of the second gas-liquid separator 302 connects with product collecting device, described
The outlet side of second gas-liquid separator 302 connects with the input end of the first condenser 401.
The liquid-type left from outlet at bottom 103 contains the liquid of product, in this partially liq still containing it is more can be with
The alcohol utilized again, so the second gas-liquid separator 302 of setting, so that this part alcohol enters the first condenser in gaseous form
401 further condensation utilizations.
As shown in Fig. 1, the product collecting device includes collecting tank 6 and the second condenser 402, second condenser
402 input end connects with the outlet end of the second gas-liquid separator 302, outlet end and 6 phase of collecting tank of the second condenser 402
It connects.
Because of the liquid (product is located in this partially liq) flowed out from the second gas-liquid separator 302, still temperature compared with
Height, so using further being utilized after temperature of second condenser 402 to reduce this partially liq.
It as shown in Fig. 1, further include diaphragm pump 7, second gas-liquid separator 302 is anti-by diaphragm pump 7 and shell and tube
The outlet at bottom 103 of device 1 is answered to connect, the diaphragm pump 7 is used to the liquid flowed out in shell and tube reactor 1 being delivered to the second gas
In liquid/gas separator 302.
As shown in Fig. 1, further include sprayer 8, be arranged between the diaphragm pump 7 and the second gas-liquid separator 302
Sprayer 8 is stated, and the sprayer 8 is set on the feed end of the second gas-liquid separator 302, sprayer 8 is used for diaphragm pump 7
The liquid to come is conveyed to be injected into the form of liquid mist in the second gas-liquid separator 302.
As shown in Fig. 1, the injector is venturi-type eductors 2.
It as shown in Fig. 1, further include gas tank 9 and heat exchanger 10, described 10 one end of heat exchanger connects with gas tank 9, heat
The other end of exchanger 10 connects with the gas feed of tubular heat exchanger；Inert gas, the heat are stored in the gas tank 9
Exchanger 10 is used to be fed to heat into the inert gas of shell and tube reactor 1.
Inert gas used in this programme preferentially uses nitrogen, and the purpose in the present apparatus with nitrogen is in order to will to be located at
The material of 1 bottom of shell and tube reactor blows to top and is reacted, and whole process is similar to the reaction in ebullated bed.
It is reacted it should be noted that the present apparatus is used in using acrylic acid (methacrylic acid) with alcohol or hydroxyl to prepare
Acrylate, methyl acrylic ester product, while also using the present apparatus when the such product of ester-interchange method.
As shown in Fig. 1, reaction raw materials are mixed in raw material mixing kettle 13, are mixed and are completed in raw material mixing kettle 13
Afterwards, then by delivery pump 14 venturi-type eductors 2 are delivered to.
As shown in Fig. 1, it in order to monitor the gas outflow in gas tank, is provided between gas tank 9 and heat exchanger 10
Pressure reducing valve 11 and flowmeter 12.
The above description is only a preferred embodiment of the present invention, not thereby limits scope of patent protection of the invention, all
It is directly or indirectly to be used in other relevant technologies with equivalent structure transformation made by description of the invention and accompanying drawing content
Field similarly includes within the scope of the present invention.
Claims (9)
1. a kind of esters of acrylic acid product production device, which is characterized in that including shell and tube reactor and injector, the injection
Device connects with the feed inlet of shell and tube reactor, and the injector carries out liquid film for raw material to be injected into shell and tube reactor
Change reaction.
2. esters of acrylic acid product production device as described in claim 1, which is characterized in that further include the first gas-liquid separation
The feed end of device, first gas-liquid separator connects with the top exit of shell and tube reactor, and the first gas-liquid separator goes out
Gas end connects with raw material recovery device, and the outlet end of the first gas-liquid separator connects with the liquid return hole of shell and tube reactor.
3. esters of acrylic acid product production device as claimed in claim 2, which is characterized in that raw material recovery device includes first
The outlet end of condenser and recycling storage tank, first condenser connects with recycling storage tank, the input end of first condenser
Connect with the first gas-liquid separator.
4. esters of acrylic acid product production device as claimed in claim 3, which is characterized in that further include the second gas-liquid separation
The feed end of device, second gas-liquid separator connects with the outlet at bottom of shell and tube reactor, and the second gas-liquid separator goes out
Liquid end connects with product collecting device, and the outlet side of second gas-liquid separator connects with the input end of the first condenser.
5. esters of acrylic acid product production device as claimed in claim 4, which is characterized in that the product collecting device includes
The input end of collecting tank and the second condenser, second condenser connects with the outlet end of the second gas-liquid separator, and second is cold
The outlet end of condenser connects with collecting tank.
6. esters of acrylic acid product production device as claimed in claim 4, which is characterized in that it further include diaphragm pump, described
Two gas-liquid separators are connected by diaphragm pump with the outlet at bottom of shell and tube reactor, and the diaphragm pump is used for tubular reaction
The liquid flowed out in device is delivered in the second gas-liquid separator.
7. esters of acrylic acid product production device as claimed in claim 6, which is characterized in that further include sprayer, it is described every
Be provided with the sprayer between membrane pump and the second gas-liquid separator, and the sprayer be set to the second gas-liquid separator into
Expect on end, sprayer is used to for the liquid that diaphragm pump conveying comes being injected into the form of liquid mist in the second gas-liquid separator.
8. esters of acrylic acid product production device as described in claim 1, which is characterized in that the injector is venturi spray
Emitter.
9. esters of acrylic acid product production device as described in claim 1, which is characterized in that further include gas tank and heat exchange
Device, described heat exchanger one end connect with gas tank, and the other end of heat exchanger connects with the gas feed of tubular heat exchanger；Institute
It states and stores inert gas in gas tank, the heat exchanger is used to be fed to heat into the inert gas of shell and tube reactor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811504241.4A CN109293512A (en) | 2018-12-10 | 2018-12-10 | Esters of acrylic acid product production device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811504241.4A CN109293512A (en) | 2018-12-10 | 2018-12-10 | Esters of acrylic acid product production device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109293512A true CN109293512A (en) | 2019-02-01 |
Family
ID=65141803
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811504241.4A Pending CN109293512A (en) | 2018-12-10 | 2018-12-10 | Esters of acrylic acid product production device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109293512A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110511142A (en) * | 2019-08-29 | 2019-11-29 | 青岛科技大学 | A kind of continuous production system and production technology of methylvinyl acetate |
| CN115894172A (en) * | 2022-10-14 | 2023-04-04 | 青岛科技大学 | Continuous production system and method of 2, 5-dimethyl-2, 5-hexanediol |
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| CN115894172A (en) * | 2022-10-14 | 2023-04-04 | 青岛科技大学 | Continuous production system and method of 2, 5-dimethyl-2, 5-hexanediol |
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Effective date of registration: 20230911 Address after: 24-2-601, Zijin Xiyuan, Sandun Town, Xihu District, Hangzhou City, Zhejiang Province, China Applicant after: Qin Minrui Address before: Room 601 and 605, 6th floor, R&D Building, No. 528 Shunfeng Road, Qianjiang Economic Development Zone, Yuhang District, Hangzhou City, Zhejiang Province, 311100 Applicant before: HANGZHOU RUOSHUI CHEMICAL TECHNOLOGY Co.,Ltd. |