CN110734370A - Method and device for recovering acrylic acid from UV (ultraviolet) light curing monomer crude products - Google Patents
Method and device for recovering acrylic acid from UV (ultraviolet) light curing monomer crude products Download PDFInfo
- Publication number
- CN110734370A CN110734370A CN201910999071.XA CN201910999071A CN110734370A CN 110734370 A CN110734370 A CN 110734370A CN 201910999071 A CN201910999071 A CN 201910999071A CN 110734370 A CN110734370 A CN 110734370A
- Authority
- CN
- China
- Prior art keywords
- liquid
- solid
- neutralization reaction
- solvent
- neutralization
- 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.)
- Granted
Links
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
- C07C51/09—Preparation of carboxylic acids or their salts, halides or anhydrides from carboxylic acid esters or lactones
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The invention provides a method and a device for recovering acrylic acid from UV photo-curing monomer crude products, which relate to the technical field of photo-curing materials, the method comprises the steps of mixing the UV photo-curing monomer crude product material after esterification with sodium hydroxide solid for neutralization reaction, then carrying out solid-liquid separation on the obtained neutralization reaction liquid to obtain liquid and sodium acrylate solid, then carrying out reduced pressure distillation on the liquid to obtain a UV photo-curing monomer finished product and a gaseous solvent, and finally condensing the gaseous solvent to obtain the liquid solvent.
Description
Technical Field
The invention relates to the technical field of light-cured materials, in particular to a method and a device for recovering acrylic acid in UV light-cured monomer crude products.
Background
The UV light-curable monomer is a product of esterification reaction of mono-alcohol, di-alcohol, polyol and acrylic acid, and its main component is acrylate, such as trimethylolpropane triacrylate, neopentyl glycol diacrylate, tripropylene glycol diacrylate, etc. in actual production, the effluent material after esterification reaction contains unreacted acrylic acid, solvent (such as cyclohexane), etc. besides acrylate, which become main impurity components in the crude product of UV light-curable monomer.
At present, the method for treating the crude UV light-cured monomer is generally to wash with a large amount of clear water and then neutralize with alkaline water. The treatment method can generate a large amount of wastewater, greatly increases the environmental protection pressure and capital investment, and also causes the problems of emulsification, difficult layering, cloudiness, yellowing and the like of materials.
Disclosure of Invention
The method and the device provided by the invention can effectively reduce the generation of waste water, obviously reduce the environmental protection pressure and capital investment, and solve the problems of easiness in emulsification, difficult layering, muddy, yellowing and the like of materials in the conventional treatment method.
In order to achieve the above object, the present invention provides the following technical solutions:
the invention provides a method for recovering acrylic acid in UV light curing monomer crude products, which comprises the following steps:
(1) mixing the UV photo-curing monomer crude product material after the esterification reaction with sodium hydroxide solid for neutralization reaction to obtain a neutralization reaction solution;
(2) carrying out solid-liquid separation on the neutralization reaction liquid to obtain liquid and sodium acrylate solid;
(3) carrying out reduced pressure distillation on the liquid to obtain a finished UV (ultraviolet) light-cured monomer and a gaseous solvent;
(4) condensing the gaseous solvent to obtain a liquid solvent.
Preferably, the temperature of the neutralization reaction in the step (1) is 38-42 ℃ and the time is 2 h.
Preferably, the acid value of the neutralization reaction liquid in the step (1) is 0.2-0.5 mgKOH/g, and the pH value is 8.0-9.0.
Preferably, the temperature of the reduced pressure distillation in the step (3) is 70-74 ℃, and the time is 6 h.
Preferably, the temperature of the liquid solvent in the step (4) is 20 +/-1 ℃.
The invention provides a recovery device of acrylic acid in UV light-cured monomer crude products, which comprises:
the device comprises a neutralization washing kettle 1, wherein the neutralization washing kettle 1 comprises a feeding port 1-1, a discharging port 1-2 and a stirrer 1-3, and a sampling port 1-4 is also arranged on the discharging port 1-2;
the inlet of the centrifuge 2 is communicated with the discharge port 1-2 of the neutralization washing kettle 1, and the centrifuge 2 comprises a liquid discharge port 2-1 and a solid discharge port 2-2;
a distillation kettle 3 with an inlet communicated with a liquid discharge port 2-1 of the centrifuge 2, wherein the distillation kettle 3 comprises a stirrer 3-1, a liquid outlet 3-2, a gas outlet 3-3 and a vacuum pump interface 3-4, and the vacuum pump interface 3-4 is connected with a vacuum pump;
an -stage condenser 4 and a two-stage condenser 5, the inlet of which is communicated with the gas outlet 3-3 of the distillation kettle 3 in sequence;
and a solvent receiving tank 6 having an inlet communicating with the secondary condenser 5.
The invention also provides a method for recovering acrylic acid in the UV light curing monomer crude product by using the recovery device in the scheme, which comprises the following steps:
(a) feeding the UV light-cured monomer crude product material after the esterification reaction and sodium hydroxide solid into a neutralization washing kettle 1 through a feeding hole 1-1, and mixing under stirring for neutralization reaction to obtain a neutralization reaction solution; during the neutralization reaction, monitoring the acid value and the pH value of the neutralization reaction liquid by sampling and analyzing from a sampling port 1-4;
(b) the neutralization reaction liquid enters a centrifuge 2 through a discharge port 1-2 to be subjected to solid-liquid separation, so that liquid and sodium acrylate solid are obtained; the acrylic acid solid is discharged from a solid discharge port 2-2;
(c) the liquid enters a distillation kettle 3 through a liquid discharge port 2-1, and is subjected to reduced pressure distillation under the stirring condition to obtain a finished UV (ultraviolet) light-cured monomer and a gaseous solvent; the vacuum environment of the reduced pressure distillation is provided by a vacuum pump connected at a vacuum pump interface 3-4; the UV light curing monomer finished product is discharged from a liquid outlet 3-2;
(d) and the gaseous solvent sequentially enters an -level condenser 4 and a secondary condenser 5 through a gas outlet 3-3 to be condensed, and the condensed liquid solvent enters a solvent receiving tank 6.
The invention provides a method for recovering acrylic acid from UV photocuring monomer crude products, which comprises the steps of mixing the UV photocuring monomer crude product after esterification with sodium hydroxide solid for neutralization reaction to obtain neutralization reaction liquid, then carrying out solid-liquid separation on the neutralization reaction liquid to obtain liquid and sodium acrylate solid, then carrying out reduced pressure distillation on the liquid to obtain a UV photocuring monomer finished product and a gaseous solvent, and finally condensing the gaseous solvent to obtain a liquid solvent.
The invention provides a recovery device for acrylic acid in UV photocuring monomer crude products, which has the advantages of simple process and low cost, can effectively recover the acrylic acid in the UV photocuring monomer crude products, and has broad application prospects.
Drawings
FIG. 1 is a schematic diagram of an apparatus for recovering acrylic acid from a crude product of a UV-curable monomer according to the present invention, in FIG. 1, 1 represents a neutralization washing tank, 1-1 represents a feed inlet, 1-2 represents a discharge outlet, 1-3 represents a stirrer, 1-4 represents a sampling port, 2 represents a centrifuge, 2-1 represents a liquid discharge outlet, 2-2 represents a solid discharge outlet, 3 represents a distillation tank, 3-1 represents a stirrer, 3-2 represents a liquid outlet, 3-3 represents a gas outlet, 3-4 represents a vacuum pump interface, 4 represents an -stage condenser, 5 represents a secondary condenser, and 6 represents a solvent receiving tank.
Detailed Description
The invention provides a method for recovering acrylic acid in UV light curing monomer crude products, which comprises the following steps:
(1) mixing the UV photo-curing monomer crude product material after the esterification reaction with sodium hydroxide solid for neutralization reaction to obtain a neutralization reaction solution;
(2) carrying out solid-liquid separation on the neutralization reaction liquid to obtain liquid and sodium acrylate solid;
(3) carrying out reduced pressure distillation on the liquid to obtain a finished UV (ultraviolet) light-cured monomer and a gaseous solvent;
(4) condensing the gaseous solvent to obtain a liquid solvent.
The method mixes the UV photo-curing monomer crude product material after the esterification reaction with sodium hydroxide solid for neutralization reaction to obtain a neutralization reaction solution. In the invention, the reaction formula of the neutralization reaction is shown as formula 1. In the invention, the temperature of the neutralization reaction is preferably 38-42 ℃, more preferably 40 ℃, and specifically, the temperature of the UV light-cured monomer crude product material after the esterification reaction is reduced to 38-42 ℃, and then the UV light-cured monomer crude product material is mixed with sodium hydroxide solid for neutralization reaction. The method for reducing the temperature is not particularly required, and the method for reducing the temperature is well known to those skilled in the art. In the present invention, the time of the neutralization reaction is preferably 2 hours; the neutralization reaction is preferably carried out under stirring. In the present invention, the acid value of the neutralization reaction liquid is preferably 0.2 to 0.5mgKOH/g, and the pH value is preferably 8.0 to 9.0, that is, the amount of the sodium hydroxide solid added is preferably such that the acid value and the pH value of the neutralization reaction liquid meet the above requirements. The present invention does not require a particular source of the sodium hydroxide solids, and may employ commercially available products conventional in the art, such as flake caustic. The invention changes the traditional process that the UV light-cured monomer crude product is firstly washed by a large amount of clear water and then neutralized by alkaline water, adopts sodium hydroxide solid (dry alkali) to directly neutralize unreacted acrylic acid in the UV light-cured monomer crude product, effectively reduces the generation of waste water, and obviously reduces the environmental protection pressure and the capital investment; and the problems of easy emulsification, difficult layering, cloudiness and yellowing of the UV light curing monomer in the washing process of a large amount of water and alkaline water in the traditional treatment process are solved, and the yield of the hydrophilic UV light curing monomer can be improved.
CH2＝CH-COOH+NaOH→CH2＝CHCOONa+H2O is represented by the formula 1.
After the neutralization reaction liquid is obtained, the invention carries out solid-liquid separation on the neutralization reaction liquid to obtain liquid and sodium acrylate solid. The method of solid-liquid separation is not particularly required in the present invention, and a method known to those skilled in the art, such as centrifugal separation, may be used. In the invention, the main components of the liquid obtained after the solid-liquid separation are the UV light curing monomer and the solvent; the obtained sodium acrylate solid can be sold as an industrial raw material, and creates income for enterprises.
After the solid-liquid separation is finished, the obtained liquid is subjected to reduced pressure distillation to obtain a UV light curing monomer finished product and a gaseous solvent. The present invention does not require any particular method for the distillation under reduced pressure, and a method for distillation under reduced pressure known to those skilled in the art may be used. In the invention, the temperature of the reduced pressure distillation is preferably 70-74 ℃, more preferably 72 ℃, and the time is 6 hours. The solvent is removed from the UV light-cured monomer through reduced pressure distillation, so that a finished product of the UV light-cured monomer is obtained.
After the reduced pressure distillation is finished, the gaseous solvent is condensed to obtain the liquid solvent. The method of condensation is not particularly required in the present invention, and a condensation method well known in the art, such as condensation with cooling water, may be used. In the present invention, the temperature of the liquid solvent is preferably 20 ± 1 ℃; the obtained liquid solvent can be reused.
The invention provides a recovery device of acrylic acid in UV light curing monomer crude products, as shown in figure 1, comprising:
the device comprises a neutralization washing kettle 1, wherein the neutralization washing kettle 1 comprises a feeding port 1-1, a discharging port 1-2 and a stirrer 1-3, and a sampling port 1-4 is also arranged on the discharging port 1-2;
the inlet of the centrifuge 2 is communicated with the discharge port 1-2 of the neutralization washing kettle 1, and the centrifuge 2 comprises a liquid discharge port 2-1 and a solid discharge port 2-2;
a distillation kettle 3 with an inlet communicated with a liquid discharge port 2-1 of the centrifuge 2, wherein the distillation kettle 3 comprises a stirrer 3-1, a liquid outlet 3-2, a gas outlet 3-3 and a vacuum pump interface 3-4, and the vacuum pump interface 3-4 is connected with a vacuum pump;
an -stage condenser 4 and a two-stage condenser 5, the inlet of which is communicated with the gas outlet 3-3 of the distillation kettle 3 in sequence;
and a solvent receiving tank 6 having an inlet communicating with the secondary condenser 5.
According to the invention, the feed inlet 1-1 and the discharge outlet 1-2 are respectively positioned at the upper end and the bottom end of the neutralization and washing kettle 1, the liquid outlet 3-2 is positioned at the bottom end of the distillation kettle 3, the gas outlet 3-3 and the vacuum pump interface 3-4 are both positioned at the upper end of the distillation kettle 3, the -stage condenser 4 and the secondary condenser 5 are both provided with a cooling water inlet and a cooling water outlet, the flowing direction of the cooling water in the condensers is preferably opposite to the flowing direction of the cooled gaseous solvent, and the solvent is fully cooled by the two-stage condensers.
The invention has no special requirement on the specific types of the neutralization washing kettle 1, the centrifuge 2, the distillation kettle 3, the -level condenser 4, the secondary condenser 5 and the solvent receiving tank 6, and can be communicated in a communication mode according to the scheme by using the equipment well known to the technical personnel in the field.
The invention also provides methods for recycling acrylic acid in the UV light curing monomer crude product by using the recycling device, which comprises the following steps:
(a) feeding the UV light-cured monomer crude product material after the esterification reaction and sodium hydroxide solid into a neutralization washing kettle 1 through a feeding hole 1-1, and mixing under stirring for neutralization reaction to obtain a neutralization reaction solution; during the neutralization reaction, monitoring the acid value and the pH value of the neutralization reaction liquid by sampling and analyzing from a sampling port 1-4;
(b) the neutralization reaction liquid enters a centrifuge 2 through a discharge port 1-2 to be subjected to solid-liquid separation, so that liquid and sodium acrylate solid are obtained; the acrylic acid solid is discharged from a solid discharge port 2-2;
(c) the liquid enters a distillation kettle 3 through a liquid discharge port 2-1, and is subjected to reduced pressure distillation under the stirring condition to obtain a finished UV (ultraviolet) light-cured monomer and a gaseous solvent; the vacuum environment of the reduced pressure distillation is provided by a vacuum pump connected at a vacuum pump interface 3-4; the UV light curing monomer finished product is discharged from a liquid outlet 3-2;
(d) and the gaseous solvent sequentially enters an -level condenser 4 and a secondary condenser 5 through a gas outlet 3-3 to be condensed, and the condensed liquid solvent enters a solvent receiving tank 6.
The method comprises the steps of enabling a UV photocuring monomer crude product material after esterification and a sodium hydroxide solid to enter a neutralization washing kettle 1 through a feeding hole 1-1, mixing the UV photocuring monomer crude product material and the sodium hydroxide solid under stirring conditions, and carrying out neutralization reaction to obtain a neutralization reaction liquid, wherein the addition sequence of the UV photocuring monomer crude product material and the sodium hydroxide solid is preferably that the UV photocuring monomer crude product material is firstly added into the neutralization washing kettle 1, a stirrer 1-3 is started, and then the sodium hydroxide solid is added into the neutralization washing kettle 1.
After the neutralization reaction liquid is obtained, the neutralization reaction liquid enters a centrifuge 2 through a discharge port 1-2 for solid-liquid separation to obtain liquid and sodium acrylate solid. In the invention, the main components of the liquid obtained after the solid-liquid separation are the UV light curing monomer and the solvent; the obtained sodium acrylate solid is discharged from a solid discharge port 2-2, can be sold as an industrial raw material, and creates income for enterprises.
After solid-liquid separation is finished, the obtained liquid enters a distillation kettle 3 through a liquid discharge port 2-1, and is subjected to reduced pressure distillation under the stirring condition to obtain a UV light curing monomer finished product and a gaseous solvent. In the invention, the vacuum environment of the reduced pressure distillation is provided by a vacuum pump connected at a vacuum pump interface 3-4; the temperature and time of the reduced pressure distillation are the same as those in the above scheme, and are not described in detail. The solvent is removed from the UV light-cured monomer through reduced pressure distillation, so that a finished product of the UV light-cured monomer is obtained; and the UV light curing monomer finished product is discharged from a liquid outlet 3-2.
After the reduced pressure distillation is finished, the gaseous solvent sequentially enters an -stage condenser 4 and a two-stage condenser 5 through a gas outlet 3-3 to be condensed, and the condensed liquid solvent enters a solvent receiving tank 6.
The device and the method provided by the invention can effectively recover the acrylic acid in the UV light curing monomer crude product, only sodium hydroxide solid and the acrylic acid are neutralized to generate a small amount of water in the recovery process, part of the water can enter the solvent collection tank along with the solvent and is discharged after standing and layering, and the generation of waste water is obviously reduced.
The following examples are provided to illustrate the method and apparatus for recovering acrylic acid from crude UV curable monomers of the present invention in detail, but they should not be construed as limiting the scope of the present invention.
Example 1
The acrylic acid in the UV light curing monomer crude product is recovered, and the method comprises the following steps:
(1) 7000kg of crude UV light-cured monomer material with an acid value of 22mgKOH/g after the esterification reaction is cooled to 40 +/-2 ℃, the material is transferred into a neutralization washing kettle through a feed port, a stirrer is started, 120kg of solid sodium hydroxide calculated according to the acid value of the crude product is put into the neutralization washing kettle, the temperature is kept and the stirring is carried out for two hours, and the acid value of the solution is measured to be 0.25mgKOH/g, and the pH value is 8.5;
(2) conveying the solution obtained in the step (1) to a centrifugal machine by using a feeding pump for separation, wherein the separated solid matter is sodium acrylate and is sold as a byproduct;
(3) conveying the clear liquid obtained by solid-liquid separation in the step (2) to a distillation kettle through a conveying pump for reduced pressure distillation, and opening a vacuum pump to pull vacuum for desolventizing; and the solvent is cooled by the two-stage condenser and then enters the solvent receiving tank, and the finished UV light-cured monomer is produced from the bottom of the distillation still.
The amount of wastewater generated after the treatment of the steps (1) - (3) is about 50kg (water generated by neutralization of sodium hydroxide and acrylic acid enters a solvent collection tank along with a solvent and can be discharged after standing and layering), and the yield of the finished product of the UV light-cured monomer obtained through the treatment of the steps (1) - (3) is more than or equal to 97.5 percent, the ester content is more than or equal to 97 percent, the color number is less than or equal to 20#, the acid number is less than or equal to 0.2mgKOH/g, and the viscosity is 20-30 CPS (25 ℃).
Comparative example
The UV light curing monomer crude product is processed by a conventional method, and the steps are as follows:
7000kg of crude UV light-cured monomer material after the esterification reaction is finished and the acid value is 22mgKOH/g, the temperature is reduced to 40 +/-2 ℃, the crude UV light-cured monomer material is washed twice with clear water, the water amount is 2000kg each time, then the crude UV light-cured monomer material is neutralized with soda water solution (the mass concentration is 16 percent, 1050kg of clear water is mixed with 200kg of soda), the neutralized product is placed for hours, layering is carried out, the lower water layer is discharged, the upper organic layer is transferred to a distillation kettle for desolventizing, the solvent enters a solvent receiving tank, and the finished UV light-cured monomer product is produced from the bottom of the distillation kettle and is packaged through pressure filtration by.
The amount of wastewater generated after the treatment of the comparative example is 5050kg (4000 kg of clean water and 1050kg of water in the sodium carbonate aqueous solution), the yield of the finished product of the UV light curing monomer obtained by the treatment is less than or equal to 97.5 percent, the ester content is more than or equal to 97 percent, the color number is 33-50 #, and the viscosity is 20-30 CPS (25 ℃).
According to the embodiment, the method and the device provided by the invention can effectively reduce the generation of wastewater, thereby obviously reducing the environmental protection pressure and the capital investment; and solves the problems that the materials are easy to be cloudy and yellow in the conventional treatment method.
The foregoing description of the preferred embodiments of the present invention is merely exemplary in nature and it should be understood that modifications and adaptations of the invention may occur to those skilled in the art without departing from the spirit of the invention and should be considered to be within the scope of the invention.
Claims (7)
1, A recovery method of acrylic acid in crude products of UV light curing monomers, which is characterized by comprising the following steps:
(1) mixing the UV photo-curing monomer crude product material after the esterification reaction with sodium hydroxide solid for neutralization reaction to obtain a neutralization reaction solution;
(2) carrying out solid-liquid separation on the neutralization reaction liquid to obtain liquid and sodium acrylate solid;
(3) carrying out reduced pressure distillation on the liquid to obtain a finished UV (ultraviolet) light-cured monomer and a gaseous solvent;
(4) condensing the gaseous solvent to obtain a liquid solvent.
2. The recovery method according to claim 1, wherein the temperature of the neutralization reaction in the step (1) is 38-42 ℃ and the time is 2 hours.
3. The recovery method according to claim 1, wherein the acid value of the neutralization reaction solution in the step (1) is 0.2 to 0.5mgKOH/g, and the pH value is 8.0 to 9.0.
4. The recovery method according to claim 1, wherein the temperature of the reduced pressure distillation in the step (3) is 70-74 ℃ and the time is 6 hours.
5. The recovery method according to claim 1, wherein the temperature of the liquid solvent in the step (4) is 20 ± 1 ℃.
6, recovery unit of acrylic acid in UV photocuring monomer crude, characterized by, includes:
the device comprises a neutralization washing kettle (1), wherein the neutralization washing kettle (1) comprises a feeding hole (1-1), a discharging hole (1-2) and a stirrer (1-3), and a sampling hole (1-4) is further formed in the discharging hole (1-2);
the inlet of the centrifuge (2) is communicated with the discharge hole (1-2) of the neutralization washing kettle (1), and the centrifuge (2) comprises a liquid discharge hole (2-1) and a solid discharge hole (2-2);
the inlet of the distillation kettle (3) is communicated with the liquid discharge port (2-1) of the centrifuge (2), the distillation kettle (3) comprises a stirrer (3-1), a liquid outlet (3-2), a gas outlet (3-3) and a vacuum pump interface (3-4), and the vacuum pump interface (3-4) is connected with a vacuum pump;
an -stage condenser (4) and a secondary condenser (5) with inlets communicated with the gas outlet (3-3) of the distillation kettle (3) in sequence;
and a solvent receiving tank (6) with an inlet communicated with the secondary condenser (5).
7, A method for recovering acrylic acid in crude UV light-curable monomers by using the recovery device of claim 6, which comprises the following steps:
(a) the UV light-cured monomer crude product material after the esterification reaction and sodium hydroxide solid enter a neutralization washing kettle (1) through a feed inlet (1-1), and are mixed under the stirring condition for neutralization reaction to obtain a neutralization reaction liquid; during the neutralization reaction, monitoring the acid value and pH value of the neutralization reaction solution by sampling and analyzing from a sampling port (1-4);
(b) the neutralization reaction liquid enters a centrifuge (2) through a discharge hole (1-2) for solid-liquid separation to obtain liquid and sodium acrylate solid; the acrylic acid solid is discharged from a solid discharge port (2-2);
(c) the liquid enters a distillation kettle (3) through a liquid discharge port (2-1), and is subjected to reduced pressure distillation under the stirring condition to obtain a finished UV (ultraviolet) light-cured monomer and a gaseous solvent; the vacuum environment of the reduced pressure distillation is provided by a vacuum pump connected at a vacuum pump interface (3-4); the UV light curing monomer finished product is discharged from a liquid outlet (3-2);
(d) and the gaseous solvent sequentially enters an -level condenser (4) and a secondary condenser (5) through a gas outlet (3-3) for condensation, and the liquid solvent obtained after condensation enters a solvent receiving tank (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910999071.XA CN110734370B (en) | 2019-10-21 | 2019-10-21 | Method and device for recovering acrylic acid in UV (ultraviolet) photocuring monomer crude product |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910999071.XA CN110734370B (en) | 2019-10-21 | 2019-10-21 | Method and device for recovering acrylic acid in UV (ultraviolet) photocuring monomer crude product |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110734370A true CN110734370A (en) | 2020-01-31 |
| CN110734370B CN110734370B (en) | 2022-11-22 |
Family
ID=69270329
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910999071.XA Active CN110734370B (en) | 2019-10-21 | 2019-10-21 | Method and device for recovering acrylic acid in UV (ultraviolet) photocuring monomer crude product |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110734370B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101092354A (en) * | 2007-06-12 | 2007-12-26 | 无锡百川化工股份有限公司 | Method for producing triacrylic ester of alkoxylating trimethylolpropane |
| CN102180784A (en) * | 2011-03-28 | 2011-09-14 | 岳阳亚王精细化工有限公司 | Synthesis method of sodium acrylate |
| US20130035504A1 (en) * | 2011-08-03 | 2013-02-07 | Cognis Ip Management Gmbh | Process For Preparing (Meth)Acrylic Esters Of Polyols |
| CN107253911A (en) * | 2017-06-16 | 2017-10-17 | 江苏三木化工股份有限公司 | A kind of lactate synthesis method of polyalcohol acrylate |
| CN108752201A (en) * | 2018-06-25 | 2018-11-06 | 南通百川新材料有限公司 | A kind of green synthesis process of trimethylolpropane trimethacrylate |
| CN108997113A (en) * | 2018-06-25 | 2018-12-14 | 南通百川新材料有限公司 | A kind of preparation method of trimethylolpropane trimethacrylate |
| CN212246660U (en) * | 2020-04-08 | 2020-12-29 | 江苏开磷瑞阳化工股份有限公司 | Device for extracting high-purity sodium acrylate or sodium methacrylate from UV monomer production wastewater |
-
2019
- 2019-10-21 CN CN201910999071.XA patent/CN110734370B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101092354A (en) * | 2007-06-12 | 2007-12-26 | 无锡百川化工股份有限公司 | Method for producing triacrylic ester of alkoxylating trimethylolpropane |
| CN102180784A (en) * | 2011-03-28 | 2011-09-14 | 岳阳亚王精细化工有限公司 | Synthesis method of sodium acrylate |
| US20130035504A1 (en) * | 2011-08-03 | 2013-02-07 | Cognis Ip Management Gmbh | Process For Preparing (Meth)Acrylic Esters Of Polyols |
| CN107253911A (en) * | 2017-06-16 | 2017-10-17 | 江苏三木化工股份有限公司 | A kind of lactate synthesis method of polyalcohol acrylate |
| CN108752201A (en) * | 2018-06-25 | 2018-11-06 | 南通百川新材料有限公司 | A kind of green synthesis process of trimethylolpropane trimethacrylate |
| CN108997113A (en) * | 2018-06-25 | 2018-12-14 | 南通百川新材料有限公司 | A kind of preparation method of trimethylolpropane trimethacrylate |
| CN212246660U (en) * | 2020-04-08 | 2020-12-29 | 江苏开磷瑞阳化工股份有限公司 | Device for extracting high-purity sodium acrylate or sodium methacrylate from UV monomer production wastewater |
Non-Patent Citations (1)
| Title |
|---|
| 王建: "《化学中的奥秘》", 30 September 2014 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110734370B (en) | 2022-11-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103833551A (en) | Separation equipment and separation method of methyl methacrylate (MMA) | |
| CN102276485B (en) | Method for producing dimethylaminoethylacrylate | |
| CN111205182B (en) | Method for preparing mixed plasticizer and environment-friendly plasticizer by using PTA residues | |
| CN106831471A (en) | A kind of method for removing a small amount of acid or glacial acetic acid and refining DMF | |
| CN104761452A (en) | Purification method for butyl acrylate crude product | |
| CN113248385B (en) | Method for reducing alkali consumption of acidic nitrobenzene | |
| CN110734370B (en) | Method and device for recovering acrylic acid in UV (ultraviolet) photocuring monomer crude product | |
| CN210261601U (en) | Continuous production device of dioctyl adipate | |
| CN115746048A (en) | Full continuous flow production method of tris (1-chloro-2-propyl) phosphate | |
| CN113603585A (en) | Continuous production process of ultra-pure methyl lactate | |
| CN201313874Y (en) | Waste acrylic acid and acrylic ester recovery device | |
| CN111138347B (en) | Industrial method and device for water diversion of vinyl pyridine compounds | |
| CN212864612U (en) | Recovery system of triethylamine for permanent violet production | |
| CN211814218U (en) | Continuous synthesis system of glyphosate | |
| CN111116431B (en) | Device and method for recovering trifluoromethanesulfonic acid from trifluoromethanesulfonic acid-containing wastewater | |
| CN112047864B (en) | Method for recovering sulfonic acid catalyst in acrylate preparation wastewater | |
| CN210786817U (en) | Device for recovering effective components of rectification residues and comprehensively treating waste gas in polyvinyl alcohol production process | |
| CN103641793A (en) | Treatment method of AE (Active Ester) residual liquid | |
| CN113968782A (en) | Method for removing impurities in recycled acetic acid | |
| CN213652174U (en) | Waste liquid recovery processing device in propionyl triketone production process | |
| CN1699327A (en) | Process for synthesizing propylene glycol monomethyl ether acetate (PMA) | |
| CN113072429B (en) | Continuous production process and device for p-tert-octyl phenol | |
| CN215139737U (en) | Novel waste acrylate oil depolymerization device | |
| CN211753888U (en) | Recovery system of tail gas is hydrolysised to glyphosate synthetic liquid | |
| CN219559201U (en) | Absorption tower tar cleaning device in maleic anhydride production |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: 226407 No. 6, Huanghai 4th Road, Rudong Coastal Economic Development Zone, Nantong City, Jiangsu Province Applicant after: Jiangsu Litian Technology Co.,Ltd. Address before: 226407 No. 6, Huanghai 4th Road, Rudong Coastal Economic Development Zone, Nantong City, Jiangsu Province Applicant before: JIANGSU LITIAN TECHNOLOGY Co.,Ltd. |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant |