CN212669585U - Adipic acid diethylene glycol monobutyl ether ester production system - Google Patents
Adipic acid diethylene glycol monobutyl ether ester production system Download PDFInfo
- Publication number
- CN212669585U CN212669585U CN202020911455.XU CN202020911455U CN212669585U CN 212669585 U CN212669585 U CN 212669585U CN 202020911455 U CN202020911455 U CN 202020911455U CN 212669585 U CN212669585 U CN 212669585U
- Authority
- CN
- China
- Prior art keywords
- diethylene glycol
- monobutyl ether
- glycol monobutyl
- production system
- adipic acid
- 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.)
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 25
- -1 Adipic acid diethylene glycol monobutyl ether ester Chemical class 0.000 title abstract description 12
- WNLRTRBMVRJNCN-UHFFFAOYSA-N adipic acid Chemical compound OC(=O)CCCCC(O)=O WNLRTRBMVRJNCN-UHFFFAOYSA-N 0.000 claims abstract description 34
- 238000000199 molecular distillation Methods 0.000 claims abstract description 26
- 238000005886 esterification reaction Methods 0.000 claims abstract description 25
- 229940028356 diethylene glycol monobutyl ether Drugs 0.000 claims abstract description 23
- JCGNDDUYTRNOFT-UHFFFAOYSA-N oxolane-2,4-dione Chemical compound O=C1COC(=O)C1 JCGNDDUYTRNOFT-UHFFFAOYSA-N 0.000 claims abstract description 21
- 230000032050 esterification Effects 0.000 claims abstract description 20
- 239000001361 adipic acid Substances 0.000 claims abstract description 18
- 235000011037 adipic acid Nutrition 0.000 claims abstract description 17
- 239000003054 catalyst Substances 0.000 claims abstract description 17
- 238000003860 storage Methods 0.000 claims description 27
- 238000001914 filtration Methods 0.000 claims description 20
- 239000003795 chemical substances by application Substances 0.000 claims description 13
- 239000002994 raw material Substances 0.000 claims description 13
- 238000007599 discharging Methods 0.000 claims description 12
- 238000005303 weighing Methods 0.000 claims description 12
- KEOUIRVJRXECRC-UHFFFAOYSA-N 6-[2-(2-butoxyethoxy)ethoxy]-6-oxohexanoic acid Chemical compound CCCCOCCOCCOC(=O)CCCCC(O)=O KEOUIRVJRXECRC-UHFFFAOYSA-N 0.000 claims description 9
- 238000004821 distillation Methods 0.000 abstract description 12
- 239000003712 decolorant Substances 0.000 abstract description 8
- 238000012824 chemical production Methods 0.000 abstract description 2
- 238000002845 discoloration Methods 0.000 abstract description 2
- 230000001590 oxidative effect Effects 0.000 abstract description 2
- 239000000047 product Substances 0.000 description 15
- 150000002148 esters Chemical class 0.000 description 7
- 238000006243 chemical reaction Methods 0.000 description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- 239000007788 liquid Substances 0.000 description 3
- 230000003647 oxidation Effects 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- 238000006467 substitution reaction Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 230000018044 dehydration Effects 0.000 description 2
- 238000006297 dehydration reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000003513 alkali Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- FRXFBIWLAJRBQW-UHFFFAOYSA-N hexanedioic acid;2-(2-hydroxyethoxy)ethanol Chemical compound OCCOCCO.OC(=O)CCCCC(O)=O FRXFBIWLAJRBQW-UHFFFAOYSA-N 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 229920002521 macromolecule Polymers 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000005191 phase separation Methods 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The utility model discloses chemical production technical field, concretely relates to adipic acid diethylene glycol monobutyl ether ester production system, production system is including esterification reactor, filter equipment and molecular distillation equipment, the esterification reactor is equipped with adipic acid feed inlet, diethylene glycol monobutyl ether feed inlet, catalyst feed inlet, decolorant feed inlet and discharge gate, filter equipment is equipped with feed inlet and discharge gate, molecular distillation equipment is equipped with feed inlet, light molecule discharge gate and heavy molecule discharge gate, esterification reactor discharge gate and filter equipment feed inlet pipe connection, filter equipment discharge gate and molecular distillation equipment feed inlet pipe connection. The production system replaces the conventional distillation equipment with the molecular distillation equipment, and avoids the problem of oxidative discoloration of products caused by high conventional distillation temperature.
Description
Technical Field
The utility model relates to a chemical production technical field, concretely relates to adipic acid diethylene glycol monobutyl ether ester production system.
Background
The antistatic ester is an ester with an antistatic function, and can be used as a plasticizer. At present, most of production processes of antistatic ester use liquid alkali to dissolve excessive raw materials, water washing is carried out for many times after esterification reaction, and finally distillation dehydration is carried out. Meanwhile, because the raw materials are excessively added, unreacted raw materials and prepared products are separated during distillation, so that the distillation temperature is usually high, and the antistatic ester product is easily oxidized and discolored at the temperature, so that the appearance of the final product is light yellow.
The diethylene glycol monobutyl ether adipate is a novel antistatic ester, can be widely applied to the field of rubber preparation, and cannot resist high temperature, so that if the existing antistatic ester production process and system are adopted, the finally obtained product is inevitably oxidized and discolored into light yellow, and the product purity is influenced.
Based on this, it is necessary to provide a diethylene glycol monobutyl ether adipate production system which ensures that the product does not generate oxidative discoloration.
SUMMERY OF THE UTILITY MODEL
Use conventional distillation equipment to current antistatic ester production system to lead to the easy oxidation of product to change the technical problem who discolours, the utility model provides an adipic acid diethylene glycol single butyl ether ester production system, this production system replace conventional distillation equipment with molecular distillation equipment, have avoided the product oxidation problem of discolouing because of conventional distillation temperature height causes.
The production system comprises an esterification reactor, a filtering device and molecular distillation equipment, wherein the esterification reactor is provided with an adipic acid feeding hole, a diethylene glycol monobutyl ether feeding hole, a catalyst feeding hole, a decolorizing agent feeding hole and a discharging hole, the filtering device is provided with a feeding hole and a discharging hole, the molecular distillation equipment is provided with a feeding hole, a light molecule discharging hole and a heavy molecule discharging hole, the discharging hole of the esterification reactor is connected with the feeding hole of the filtering device through a pipeline, and the discharging hole of the filtering device is connected with the feeding hole of the molecular distillation equipment through a pipeline.
Further, the adipic acid feed port is connected with an adipic acid storage tank, and a valve and a weighing device are arranged on the adipic acid feed port;
the diethylene glycol monobutyl ether feed port is connected with a diethylene glycol monobutyl ether storage tank, and a valve and a weighing device are arranged on the diethylene glycol monobutyl ether feed port;
the catalyst feeding port is connected with a catalyst storage tank, and a valve and a weighing device are arranged on the catalyst feeding port;
the decoloring agent feed port is connected with a decoloring agent storage tank, and a valve and a weighing device are arranged on the decoloring agent feed port.
Further, the filtering device is a plate and frame filter press.
Further, the production system also comprises a vacuum pump, the esterification reactor is provided with an air exhaust hole, and the air exhaust hole is connected with a vacuum pump pipeline. Adipic acid and diethylene glycol monobutyl ether take place esterification and can produce water, if reaction water can not in time get rid of, can have reversible reaction, influence production, and the vacuum pump can carry out vacuum dehydration to the esterification reaction ware through the hole of bleeding.
Furthermore, the molecular distillation equipment is provided with a dry vacuum pump unit, and the dry vacuum pump unit comprises a roots vacuum pump and a screw vacuum pump. In the production of diethylene glycol monobutyl ether adipate, the vacuum degree of molecular distillation equipment needs to be controlled within 30Pa, and the control of the vacuum degree in the equipment is realized by arranging a dry vacuum pump unit.
Further, the light molecule discharge port is connected with a raw material temporary storage tank, and the heavy molecule discharge port is connected with a product temporary storage tank. The molecular distillation equipment can realize liquid phase separation according to different movement free paths of substances, in the production of the adipic acid diethylene glycol monobutyl ether ester, excessive raw materials are light molecules, can be stored in a raw material temporary storage tank after separation, and can be used as raw materials again after collection; the product diethylene glycol monobutyl ether adipate is a heavy molecule and can be stored in a product temporary storage tank after being separated.
The utility model has the advantages that,
the utility model provides an adipic acid diethylene glycol monobutyl ether ester production system, on one hand, this system adopts molecular distillation equipment to replace conventional distillation equipment, has solved the product oxidation problem that the distillation temperature is high to lead to, and the product that makes is colorless transparent, can also retrieve the excessive raw materials of throwing added simultaneously, has reduced the raw materials waste; on the other hand, this system sets up the decolorant feed inlet on esterification reactor, with the time of throwing of decolorant in advance to before the esterification reaction, full play activated carbon surface microporous structure's adsorption effect, impurity formation macromolecule after avoiding the esterification reaction to finish, activated carbon adsorption effect reduces.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of embodiment 1 of the present invention;
fig. 2 is a schematic structural diagram of embodiment 2 of the present invention.
In the figure, a 1-esterification reactor, a 11-adipic acid feed port, a 12-diethylene glycol monobutyl ether feed port, a 13-catalyst feed port, a 14-decolorant feed port,
2-a filtering device is arranged in the filter,
3-molecular distillation equipment, 31-light molecule discharge port, 32-heavy molecule discharge port,
the method comprises the following steps of (1) storing adipic acid in a storage tank, 5-diethylene glycol monobutyl ether in a storage tank, 6-a catalyst storage tank, 7-a decolorizer storage tank, 8-a vacuum pump, 9-a raw material temporary storage tank and 10-a product temporary storage tank.
Detailed Description
In order to make the technical solutions in the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall belong to the protection scope of the present invention.
Example 1
As shown in fig. 1, a system for producing diethylene glycol monobutyl ether adipate, which comprises an esterification reactor 1, a filtering device 2 and a molecular distillation device 3, wherein the esterification reactor 1 is provided with an adipic acid feed inlet 11, a diethylene glycol monobutyl ether feed inlet 12, a catalyst feed inlet 13, a decolorizing agent feed inlet 14 and a discharge outlet, the filtering device 2 is provided with a feed inlet and a discharge outlet, the molecular distillation device 3 is provided with a feed inlet, a light molecule discharge outlet 31 and a heavy molecule discharge outlet 32, the discharge outlet of the esterification reactor 1 is connected with the feed inlet of the filtering device 2 through a pipeline, and the discharge outlet of the filtering device 2 is connected with the feed inlet of the molecular distillation device 3 through.
The working principle of the embodiment 1 is as follows:
adipic acid, excessive diethylene glycol monobutyl ether, a catalyst and a decolorizing agent enter an esterification reactor from corresponding feed inlets, the adipic acid diethylene glycol monobutyl ether ester generated by the reaction, the decolorizing agent and incompletely reacted diethylene glycol monobutyl ether enter a plate-and-frame filter press together for filtering, the mixed liquid of the adipic acid diethylene glycol monobutyl ether ester and the diethylene glycol monobutyl ether obtained after filtering enters molecular distillation equipment for distillation, the diethylene glycol monobutyl ether is discharged from a light molecule discharge port and the adipic acid diethylene glycol monobutyl ether ester is discharged from a heavy molecule discharge port according to different molecular motion free paths of the adipic acid diethylene glycol monobutyl ether ester and the decolorizing agent.
Example 2
As shown in fig. 2, on the basis of example 1,
the adipic acid feed port 11 is connected with an adipic acid storage tank 4, and a valve and a weighing device are arranged on the adipic acid feed port 11;
the diethylene glycol monobutyl ether feed inlet 12 is connected with a diethylene glycol monobutyl ether storage tank 5, and a valve and a weighing device are arranged on the diethylene glycol monobutyl ether feed inlet 12;
the catalyst feed port 13 is connected with a catalyst storage tank 6, and a valve and a weighing device are arranged on the catalyst feed port 13;
the decolorant feed port 14 is connected with a decolorant storage tank 7, and a valve and a weighing device are arranged on the decolorant feed port 14;
the filtering device 2 is a plate-and-frame filter press;
the production system also comprises a vacuum pump 8, the esterification reactor 1 is provided with an air exhaust hole, and the air exhaust hole is connected with the vacuum pump 8 through a pipeline;
the molecular distillation equipment 3 is provided with a dry vacuum pump unit, the dry vacuum pump unit comprises a roots vacuum pump and a screw vacuum pump, and the specific arrangement mode of the dry vacuum pump unit and other structures of the molecular distillation equipment are the same as those of the conventional molecular distillation equipment;
the light molecule discharge port 31 is connected with a raw material temporary storage tank 9, and the heavy molecule discharge port 32 is connected with a product temporary storage tank 10.
The working principle of the embodiment 2 is as follows:
adipic acid, excessive diethylene glycol monobutyl ether, catalyst and decolorant enter the esterification reactor from corresponding feed inlets, a vacuum pump ensures that the vacuum degree in the esterification reactor is-0.095 MPa, so as to eliminate the moisture produced in the reaction process, the diethylene glycol monobutyl ether adipate produced by the reaction, a decolorizing agent and the diethylene glycol monobutyl ether which is not completely reacted enter a plate-and-frame filter press for filtration, the mixed liquid of the diethylene glycol monobutyl ether adipate and the diethylene glycol monobutyl ether adipate obtained after filtration enters molecular distillation equipment for distillation, a dry vacuum pump unit realizes the control of the vacuum degree in the molecular distillation equipment, according to the difference of the two molecular motion free paths, the diethylene glycol monobutyl ether is discharged from a light molecular discharge port and collected into a raw material temporary storage tank, and after the mixture is reused, the adipic acid diethylene glycol monobutyl ether ester is discharged from the heavy molecule discharge port and collected into a product temporary storage tank for storage.
Although the present invention has been described in detail by referring to the drawings in conjunction with the preferred embodiments, the present invention is not limited thereto. Various equivalent modifications or substitutions can be made on the embodiments of the present invention by those skilled in the art without departing from the spirit and substance of the present invention, and these modifications or substitutions are intended to be within the scope of the present invention/any person skilled in the art can easily conceive of changes or substitutions within the technical scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (6)
1. The production system of the diethylene glycol monobutyl ether adipate is characterized by comprising an esterification reactor (1), a filtering device (2) and a molecular distillation device (3), wherein the esterification reactor (1) is provided with an adipic acid feeding hole (11), a diethylene glycol monobutyl ether feeding hole (12), a catalyst feeding hole (13), a decolorizing agent feeding hole (14) and a discharging hole, the filtering device (2) is provided with a feeding hole and a discharging hole, the molecular distillation device (3) is provided with a feeding hole, a light molecule discharging hole (31) and a heavy molecule discharging hole (32), the discharging hole of the esterification reactor (1) is in pipeline connection with the feeding hole of the filtering device (2), and the discharging hole of the filtering device (2) is in pipeline connection with the feeding hole of the molecular distillation device (3).
2. The production system of claim 1, wherein the adipic acid feed port (11) is connected with an adipic acid storage tank (4), and a valve and a weighing device are arranged on the adipic acid feed port (11);
the diethylene glycol monobutyl ether feed port (12) is connected with a diethylene glycol monobutyl ether storage tank (5), and a valve and a weighing device are arranged on the diethylene glycol monobutyl ether feed port (12);
the catalyst feeding port (13) is connected with a catalyst storage tank (6), and a valve and a weighing device are arranged on the catalyst feeding port (13);
the decolorizing agent feeding port (14) is connected with a decolorizing agent storage tank (7), and a valve and a weighing device are arranged on the decolorizing agent feeding port (14).
3. The production system according to claim 1, wherein the filtration device (2) is a plate and frame filter press.
4. The production system according to claim 1, further comprising a vacuum pump (8), wherein the esterification reactor (1) is provided with a suction hole, and the suction hole is connected with the vacuum pump (8) through a pipeline.
5. The production system as claimed in claim 1, wherein the molecular distillation apparatus (3) is provided with a dry vacuum pump unit including a roots vacuum pump and a screw vacuum pump.
6. The production system according to claim 1, wherein the light molecule outlet (31) is connected to a raw material holding tank (9) and the heavy molecule outlet (32) is connected to a product holding tank (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020911455.XU CN212669585U (en) | 2020-05-25 | 2020-05-25 | Adipic acid diethylene glycol monobutyl ether ester production system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020911455.XU CN212669585U (en) | 2020-05-25 | 2020-05-25 | Adipic acid diethylene glycol monobutyl ether ester production system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212669585U true CN212669585U (en) | 2021-03-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020911455.XU Expired - Fee Related CN212669585U (en) | 2020-05-25 | 2020-05-25 | Adipic acid diethylene glycol monobutyl ether ester production system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212669585U (en) |
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2020
- 2020-05-25 CN CN202020911455.XU patent/CN212669585U/en not_active Expired - Fee Related
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Granted publication date: 20210309 |
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