CN220003996U - Esterification reaction device is united with co-esterification to divide esterification - Google Patents
Esterification reaction device is united with co-esterification to divide esterification Download PDFInfo
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- CN220003996U CN220003996U CN202320467234.1U CN202320467234U CN220003996U CN 220003996 U CN220003996 U CN 220003996U CN 202320467234 U CN202320467234 U CN 202320467234U CN 220003996 U CN220003996 U CN 220003996U
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- 238000005886 esterification reaction Methods 0.000 title claims abstract description 402
- 230000032050 esterification Effects 0.000 title claims abstract description 338
- 238000000605 extraction Methods 0.000 claims abstract description 96
- 238000004519 manufacturing process Methods 0.000 claims abstract description 44
- 239000007788 liquid Substances 0.000 claims abstract description 11
- 238000003756 stirring Methods 0.000 claims description 43
- 230000005540 biological transmission Effects 0.000 claims description 4
- 230000002093 peripheral effect Effects 0.000 claims description 4
- 239000000463 material Substances 0.000 abstract description 10
- 230000036961 partial effect Effects 0.000 abstract description 2
- 239000000047 product Substances 0.000 description 15
- 238000006243 chemical reaction Methods 0.000 description 12
- 229920000728 polyester Polymers 0.000 description 11
- 239000002994 raw material Substances 0.000 description 11
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 8
- 238000006068 polycondensation reaction Methods 0.000 description 6
- 239000002253 acid Substances 0.000 description 5
- 239000000178 monomer Substances 0.000 description 5
- 230000002829 reductive effect Effects 0.000 description 5
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 3
- 150000001298 alcohols Chemical class 0.000 description 3
- 150000007513 acids Chemical class 0.000 description 2
- 229920000180 alkyd Polymers 0.000 description 2
- 150000001732 carboxylic acid derivatives Chemical class 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 150000002148 esters Chemical class 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 125000003118 aryl group Chemical group 0.000 description 1
- 238000010009 beating Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 150000001735 carboxylic acids Chemical class 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 239000000975 dye Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 150000004715 keto acids Chemical class 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-N sulfuric acid Substances OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The utility model relates to a combined esterification reaction device for partial esterification and co-esterification, which comprises a first esterification reaction production line, wherein the first esterification reaction production line comprises an esterification kettle I, an esterification kettle I extraction pump I, an esterification kettle II extraction pump II, an esterification kettle III and an esterification kettle III extraction pump III; the second esterification production line comprises an esterification kettle IV, an esterification kettle IV extraction pump IV, an esterification kettle V and an esterification kettle V extraction pump V, wherein a discharge end pipe of the esterification kettle IV is connected to a feed end of the esterification kettle IV extraction pump IV, and a discharge end pipe of the esterification kettle IV extraction pump IV is connected to a feed end of the esterification kettle V; the discharge end pipe of the extraction pump V of the esterification kettle V is connected to a pipeline between the extraction pump II of the esterification kettle II and the extraction pump II of the esterification kettle II; the second esterification production line connected in parallel to the first esterification production line can enable two materials to enter the mixing device for mixing after esterification, and after mixing, the two materials are discharged by the esterification liquid extraction pump, different products can be selected for production according to use requirements, and the selectivity is high.
Description
Technical Field
The utility model relates to the technical field of esterification, in particular to a combined esterification reaction device for esterification and co-esterification.
Background
The esterification reaction is an organic chemical reaction, mainly the reaction of alcohol and carboxylic acid or inorganic oxo acid to generate ester and water. The reaction of carboxylic acid with alcohol, inorganic oxyacid with alcohol and inorganic strong acid with alcohol are classified into three types. The esterification of carboxylic acids with alcohols is reversible and generally very slow, so concentrated sulfuric acid is often used as a catalyst or the esterification temperature is increased to increase the positive reaction rate. The polycarboxylic acid reacts with the alcohol to form various esters. The reaction of the inorganic strong acid with the alcohol is generally faster. Typical esterification reactions are reactions of ethanol and acetic acid to produce ethyl acetate with aromatic odor, which is a raw material for manufacturing dyes and medicines;
the traditional polyester reaction process is mainly realized by two working sections or four esterification series esterification kettle production lines;
in the existing duplex section or four serial esterification kettle production lines, each production line can generally only carry out feeding esterification of one material at the same time, namely one series of polyester products are produced by the same raw material, and the polyester products with various brands under one series are produced by the same polymerization raw material;
therefore, the modified esterification liquid monomer is provided for the esterification pre-polycondensation and polycondensation working section, and an esterification reaction kettle is connected in parallel in a duplex section or four serial esterification kettle production lines, so that the condition that multiple materials are fed and esterified simultaneously is met, the excessive product caused by raw material switching in the production process can be reduced, and can realize the production of different brands of products under the same modified polyester raw material product series, mainly change the chain segment arrangement of the polyester molecular weight through the difference of the esterified monomer, produce the polyester product of different chain segment arrangements, thus obtain the esterification and co-esterification combined esterification reaction device of different physical properties, thermal properties and optical properties.
Disclosure of Invention
Aiming at the defects of the prior art, the utility model provides a modified esterification liquid monomer for esterification pre-polycondensation and polycondensation working sections, and an esterification reaction kettle is connected in parallel in a duplex section or four serial esterification kettle production lines, so that multiple materials are fed and esterified simultaneously, excessive products caused by raw material switching in the production process can be reduced, production of different brands of products under the same modified polyester raw material product series can be realized, and polyester products with different chain segment arrangements are produced mainly by changing chain segment arrangements of polyester molecular weight through different esterification monomers, so that the esterification and co-esterification combined esterification reaction device with different physical properties, thermal properties and optical properties is obtained.
The technical problem to be solved by the utility model is realized by the following technical scheme, which comprises a combined esterification reaction device of partial esterification and co-esterification,
the first esterification production line comprises an esterification kettle I, an esterification kettle I extraction pump I, an esterification kettle II extraction pump II, an esterification kettle III and an esterification kettle III extraction pump III, wherein a discharge end pipe of the esterification kettle I is connected to a feed end of the esterification kettle I extraction pump I, a discharge end pipe of the esterification kettle I extraction pump I is connected to a feed end of the esterification kettle II, a discharge end pipe of the esterification kettle II is connected to a feed end of the esterification kettle II extraction pump II, a discharge end pipe of the esterification kettle II extraction pump II is connected to a feed end of the esterification kettle III, and a discharge end pipe of the esterification kettle III is connected to a feed end of the esterification kettle III extraction pump III;
the second esterification production line comprises an esterification kettle IV, an esterification kettle IV extraction pump IV, an esterification kettle V and an esterification kettle V extraction pump V, wherein a discharge end pipe of the esterification kettle IV is connected to a feed end of the esterification kettle IV extraction pump IV, a discharge end pipe of the esterification kettle IV extraction pump IV is connected to a feed end of the esterification kettle V, and a discharge end pipe of the esterification kettle V is connected to a feed end of the esterification kettle V extraction pump V;
the discharge end pipe of the extraction pump V of the esterification kettle V is connected to a pipeline between the extraction pump II of the esterification kettle II and the extraction pump II of the esterification kettle II, so that a combined esterification reaction of a first esterification reaction production line and a second esterification reaction production line is formed.
The technical problem to be solved by the utility model can be further solved by the technical scheme that the esterification separating and co-esterification combined esterification reaction device is characterized in that a discharge end pipe of a discharge pump V of an esterification kettle V is connected to a pipeline between an esterification kettle I and the discharge pump I of the esterification kettle I.
The technical problem to be solved by the utility model can be further solved by the technical scheme that the esterification separating and co-esterification combined esterification reaction device is characterized in that the esterification kettles I, II, III, IV and V are respectively provided with a pressure gauge and a liquid level gauge.
The technical problem to be solved by the utility model can also be achieved by the following technical scheme, the esterification separating and co-esterification combined esterification reaction device is characterized in that the feeding ends of the esterification kettle I, the esterification kettle II, the esterification kettle III, the esterification kettle IV and the esterification kettle V are provided with flow meters.
The technical problem to be solved by the utility model can be further solved by the technical scheme that the esterification reaction device combining the esterification and the co-esterification is characterized in that stirring devices are arranged in the esterification kettle I, the esterification kettle II, the esterification kettle III, the esterification kettle IV and the esterification kettle V.
The technical problem to be solved by the utility model can be also achieved by the following technical scheme, the esterification and co-esterification combined esterification reaction device comprises a stirring power mechanism, a stirring shaft and stirring blades; the stirring power mechanism is externally arranged on the top ends of the esterification kettle I, the esterification kettle II, the esterification kettle III, the esterification kettle IV and the esterification kettle V; the stirring shafts are vertically arranged in the esterification kettle I, the esterification kettle II, the esterification kettle III, the esterification kettle IV and the esterification kettle V, and the top ends of the stirring shafts are in transmission connection with the power output end of the stirring power mechanism; the stirring blade is fixed on the peripheral surface of the lower end of the stirring shaft.
Compared with the prior art, the utility model has the beneficial technical effects that:
(1) The two materials can be simultaneously mixed in the mixing device after being esterified through the second esterification production line connected in parallel to the first esterification production line, and the mixed materials are discharged by the esterification liquid extraction pump, so that different products can be selected for production according to the use requirement, and the selectivity is high;
(2) After the double-section production lines are connected in parallel, the joint production of esterification and co-esterification is realized, the esterification raw materials can be changed at any time to produce different polyester products, and the reaction temperatures of different dibasic acids and dihydric alcohols in the esterification process are inconsistent, so that different reaction temperatures can be set according to different raw materials, the valued rate is higher, and the molar ratio of alkyd is reduced;
(3) Each esterification kettle is provided with an esterification kettle extraction pump, so that the esterification kettle can control the reaction process more easily, reduce byproducts, improve the yield and reduce the energy consumption.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
fig. 2 is a schematic diagram of another embodiment of the present utility model.
In the figure, 1, an esterification kettle I; 2. the esterification kettle I is provided with a pump I; 3. an esterification kettle II; 4. extracting a pump II from the esterification kettle II; 5. esterification vessel III; 6. extracting a pump III from the esterification kettle III; 7. an esterification kettle IV; 8. extracting a pump IV from the esterification kettle IV; 9. an esterification kettle V; 10. and (5) extracting a pump V from the esterification kettle V.
Detailed Description
Specific embodiments of the utility model will be further described below with reference to the accompanying drawings, in order to facilitate a further understanding of the utility model by those skilled in the art, without limiting the scope of the claims thereto.
Embodiment 1, refer to fig. 1, a combined esterification and co-esterification reaction device comprises a first esterification reaction production line, which comprises an esterification kettle I1, an esterification kettle I extraction pump I2, an esterification kettle II 3, an esterification kettle II extraction pump II 4, an esterification kettle III 5 and an esterification kettle III extraction pump III 6, wherein a discharge end pipe of the esterification kettle I1 is connected to a feed end of the esterification kettle I extraction pump I2, a discharge end pipe of the esterification kettle I extraction pump I2 is connected to a feed end of the esterification kettle II 3, a discharge end pipe of the esterification kettle II 3 is connected to a feed end of the esterification kettle II extraction pump II 4, a discharge end pipe of the esterification kettle II extraction pump II 4 is connected to a feed end of the esterification kettle III 5, and a discharge end pipe of the esterification kettle III 5 is connected to a feed end of the esterification kettle III extraction pump III 6; the second esterification production line comprises an esterification kettle IV 7, an esterification kettle IV extraction pump IV 8, an esterification kettle V9 and an esterification kettle V extraction pump V10, wherein a discharge end pipe of the esterification kettle IV 7 is connected to a feed end of the esterification kettle IV extraction pump IV 8, a discharge end pipe of the esterification kettle IV extraction pump IV 8 is connected to a feed end of the esterification kettle V9, and a discharge end pipe of the esterification kettle V9 is connected to a feed end of the esterification kettle V extraction pump V10; the esterification kettles I1, II 3, III 5, IV 7 and V9 are respectively provided with a pressure gauge and a liquid level gauge; and the feeding ends of the esterification kettle I1, the esterification kettle II 3, the esterification kettle III 5, the esterification kettle IV 7 and the esterification kettle V9 are provided with flow meters. The discharge end pipe of the extraction pump V10 of the esterification kettle V is connected to a pipeline between the extraction pump II 3 of the esterification kettle II and the extraction pump II 4 of the esterification kettle II, so that a combined esterification reaction of a first esterification reaction production line and a second esterification reaction production line is formed. Stirring devices are arranged in the esterification kettle I1, the esterification kettle II 3, the esterification kettle III 5, the esterification kettle IV 7 and the esterification kettle V9. The stirring device comprises a stirring power mechanism, a stirring shaft and stirring blades; the stirring power mechanism is externally arranged at the top ends of the esterification kettle I1, the esterification kettle II 3, the esterification kettle III 5, the esterification kettle IV 7 and the esterification kettle V9; the stirring shafts are vertically arranged in the esterification kettle I1, the esterification kettle II 3, the esterification kettle III 5, the esterification kettle IV 7 and the esterification kettle V9, and the top ends of the stirring shafts are in transmission connection with the power output end of the stirring power mechanism; the stirring blade is fixed on the peripheral surface of the lower end of the stirring shaft.
Embodiment 2, refer to fig. 2, a combined esterification and co-esterification reaction apparatus of embodiment 1 includes a first esterification reaction production line, which includes an esterification reactor i 1, an esterification reactor i extraction pump i 2, an esterification reactor ii 3, an esterification reactor ii extraction pump ii 4, an esterification reactor iii 5, and an esterification reactor iii extraction pump iii 6, wherein a discharge end pipe of the esterification reactor i 1 is connected to a feed end of the esterification reactor i extraction pump i 2, a discharge end pipe of the esterification reactor i extraction pump i 2 is connected to a feed end of the esterification reactor ii 3, a discharge end pipe of the esterification reactor ii 3 is connected to a feed end of the esterification reactor ii extraction pump ii 4, a discharge end pipe of the esterification reactor ii extraction pump ii 4 is connected to a feed end of the esterification reactor iii 5, and a discharge end pipe of the esterification reactor iii 5 is connected to a feed end of the esterification reactor iii extraction pump iii 6; the second esterification production line comprises an esterification kettle IV 7, an esterification kettle IV extraction pump IV 8, an esterification kettle V9 and an esterification kettle V extraction pump V10, wherein a discharge end pipe of the esterification kettle IV 7 is connected to a feed end of the esterification kettle IV extraction pump IV 8, a discharge end pipe of the esterification kettle IV extraction pump IV 8 is connected to a feed end of the esterification kettle V9, and a discharge end pipe of the esterification kettle V9 is connected to a feed end of the esterification kettle V extraction pump V10; the esterification kettles I1, II 3, III 5, IV 7 and V9 are respectively provided with a pressure gauge and a liquid level gauge; and the feeding ends of the esterification kettle I1, the esterification kettle II 3, the esterification kettle III 5, the esterification kettle IV 7 and the esterification kettle V9 are provided with flow meters. The discharge end pipe of the extraction pump V10 of the esterification kettle V is connected to a pipeline between the extraction pump I1 of the esterification kettle I and the extraction pump I2 of the esterification kettle I, so that a combined esterification reaction of a first esterification reaction production line and a second esterification reaction production line is formed. Stirring devices are arranged in the esterification kettle I1, the esterification kettle II 3, the esterification kettle III 5, the esterification kettle IV 7 and the esterification kettle V9. The stirring device comprises a stirring power mechanism, a stirring shaft and stirring blades; the stirring power mechanism is externally arranged at the top ends of the esterification kettle I1, the esterification kettle II 3, the esterification kettle III 5, the esterification kettle IV 7 and the esterification kettle V9, and can be a rotary motor; the stirring shafts are vertically arranged in the esterification kettle I1, the esterification kettle II 3, the esterification kettle III 5, the esterification kettle IV 7 and the esterification kettle V9, and the top ends of the stirring shafts are in transmission connection with the power output end of the stirring power mechanism through a coupling; the stirring blade is fixed on the peripheral surface of the lower end of the stirring shaft.
In the combined esterification reaction device of the sub-esterification and co-esterification in the embodiment 1 to the embodiment 2, the esterification reactor I1, the esterification reactor I extraction pump I2, the esterification reactor II 3, the esterification reactor II extraction pump II 4, the esterification reactor III 5, the esterification reactor III extraction pump III 6, the esterification reactor IV 7, the esterification reactor IV extraction pump IV 8, the esterification reactor V9 and the esterification reactor V extraction pump V10 in the first esterification reaction production line and the second esterification reaction production line are connected in parallel to the first esterification reaction production line, so that the esterification and the mixing of two different materials can be simultaneously carried out, and in particular, a valve body is arranged at the discharge end of the esterification reactor V9 to control the discharge of the esterification liquid, thereby selectively allowing the esterification liquid of the esterification reactor V9 to enter the first esterification reaction production line;
specifically, a static mixer (not shown) can be connected in series on a pipeline between the esterification kettle III 5 and the esterification kettle III extraction pump III 6, the static mixer can be selected by the user according to the use requirement in the prior art, and a beating tank (not shown) can also be connected in series at the feed inlets of the esterification kettle I1 and the esterification kettle IV 7 in an optional manner, so that the uniform feeding of materials is ensured;
the esterification reaction device combining esterification and co-esterification is characterized in that:
the materials to be esterified are respectively added into an esterification kettle I1 and an esterification kettle IV 7, at the moment, the esterification kettle I1 is discharged into an esterification kettle I extraction pump I2, the esterification kettle I extraction pump I2 is discharged into an esterification kettle II 3, the esterification kettle II 3 is discharged into an esterification kettle II extraction pump II 4, the esterification kettle II extraction pump II 4 is discharged into an esterification kettle III 5, the esterification kettle III 5 is discharged, the esterification kettle IV 7 is discharged into an esterification kettle IV extraction pump IV 8, the esterification kettle IV extraction pump IV 8 is discharged into an esterification kettle V9, the esterification kettle V9 is discharged into an esterification kettle V extraction pump V, the esterification kettle V extraction pump V is discharged onto a pipeline between the esterification kettle II 3 and the esterification kettle II extraction pump II 4 or onto a pipeline between the esterification kettle I1 and the esterification kettle I extraction pump I2, after the first esterification production line and the second esterification production line of the duplex section are connected in parallel, the joint production of esterification and co-esterification can be realized, different polyester products can be produced by changing esterification raw materials at any time, the reaction temperatures of different dibasic acids and dihydric alcohols in the esterification process are inconsistent, different reaction temperatures can be set according to different raw materials in an esterification kettle, the valorization rate is higher, the molar ratio of alkyd is reduced, the structural design is reasonable, the technical problem that the traditional esterification equipment is difficult to provide different modified esterified liquid monomers in the esterification pre-polycondensation and polycondensation section is solved, the switching between different brands of the same products is realized, and the excessive products are reduced.
Claims (6)
1. A divide esterification and co-esterification to unite the esterification reaction unit, characterized by: comprising the steps of (a) a step of,
the first esterification production line comprises an esterification kettle I, an esterification kettle I extraction pump I, an esterification kettle II extraction pump II, an esterification kettle III and an esterification kettle III extraction pump III, wherein a discharge end pipe of the esterification kettle I is connected to a feed end of the esterification kettle I extraction pump I, a discharge end pipe of the esterification kettle I extraction pump I is connected to a feed end of the esterification kettle II, a discharge end pipe of the esterification kettle II is connected to a feed end of the esterification kettle II extraction pump II, a discharge end pipe of the esterification kettle II extraction pump II is connected to a feed end of the esterification kettle III, and a discharge end pipe of the esterification kettle III is connected to a feed end of the esterification kettle III extraction pump III;
the second esterification production line comprises an esterification kettle IV, an esterification kettle IV extraction pump IV, an esterification kettle V and an esterification kettle V extraction pump V, wherein a discharge end pipe of the esterification kettle IV is connected to a feed end of the esterification kettle IV extraction pump IV, a discharge end pipe of the esterification kettle IV extraction pump IV is connected to a feed end of the esterification kettle V, and a discharge end pipe of the esterification kettle V is connected to a feed end of the esterification kettle V extraction pump V;
the discharge end pipe of the extraction pump V of the esterification kettle V is connected to a pipeline between the extraction pump II of the esterification kettle II and the extraction pump II of the esterification kettle II, so that a combined esterification reaction of a first esterification reaction production line and a second esterification reaction production line is formed.
2. The combined esterification and co-esterification reaction apparatus according to claim 1, wherein: the discharge end pipe of the extraction pump V of the esterification kettle V is connected to a pipeline between the extraction pump I of the esterification kettle I and the extraction pump I of the esterification kettle I.
3. The combined esterification and co-esterification reaction apparatus according to claim 1, wherein: and the esterification kettle I, the esterification kettle II, the esterification kettle III, the esterification kettle IV and the esterification kettle V are respectively provided with a pressure gauge and a liquid level gauge.
4. The combined esterification and co-esterification reaction apparatus according to claim 1, wherein: and the feeding ends of the esterification kettle I, the esterification kettle II, the esterification kettle III, the esterification kettle IV and the esterification kettle V are provided with flow meters.
5. The combined esterification and co-esterification reaction apparatus according to claim 1, wherein: stirring devices are arranged in the esterification kettle I, the esterification kettle II, the esterification kettle III, the esterification kettle IV and the esterification kettle V.
6. The combined esterification and co-esterification reaction apparatus according to claim 1, wherein: the stirring device comprises a stirring power mechanism, a stirring shaft and stirring blades; the stirring power mechanism is externally arranged on the top ends of the esterification kettle I, the esterification kettle II, the esterification kettle III, the esterification kettle IV and the esterification kettle V; the stirring shafts are vertically arranged in the esterification kettle I, the esterification kettle II, the esterification kettle III, the esterification kettle IV and the esterification kettle V, and the top ends of the stirring shafts are in transmission connection with the power output end of the stirring power mechanism; the stirring blade is fixed on the peripheral surface of the lower end of the stirring shaft.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320467234.1U CN220003996U (en) | 2023-03-13 | 2023-03-13 | Esterification reaction device is united with co-esterification to divide esterification |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320467234.1U CN220003996U (en) | 2023-03-13 | 2023-03-13 | Esterification reaction device is united with co-esterification to divide esterification |
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| CN220003996U true CN220003996U (en) | 2023-11-14 |
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| CN202320467234.1U Active CN220003996U (en) | 2023-03-13 | 2023-03-13 | Esterification reaction device is united with co-esterification to divide esterification |
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