CN220276989U - Aromatic amine alkylation device - Google Patents
Aromatic amine alkylation device Download PDFInfo
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- CN220276989U CN220276989U CN202321795830.9U CN202321795830U CN220276989U CN 220276989 U CN220276989 U CN 220276989U CN 202321795830 U CN202321795830 U CN 202321795830U CN 220276989 U CN220276989 U CN 220276989U
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- Prior art keywords
- aromatic amine
- reaction
- gas
- kettle
- alkylation
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- 238000005804 alkylation reaction Methods 0.000 title claims abstract description 36
- 150000004982 aromatic amines Chemical class 0.000 title claims abstract description 27
- 230000029936 alkylation Effects 0.000 title claims abstract description 22
- 238000006243 chemical reaction Methods 0.000 claims abstract description 34
- 239000007788 liquid Substances 0.000 claims abstract description 24
- 238000000926 separation method Methods 0.000 claims abstract description 17
- 230000003068 static effect Effects 0.000 claims abstract description 16
- 238000003860 storage Methods 0.000 claims abstract description 13
- 238000006460 hydrolysis reaction Methods 0.000 claims abstract description 10
- 230000007062 hydrolysis Effects 0.000 claims abstract description 9
- 239000007789 gas Substances 0.000 claims description 23
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 12
- 229910052757 nitrogen Inorganic materials 0.000 claims description 6
- 238000011084 recovery Methods 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 150000001336 alkenes Chemical class 0.000 abstract description 3
- 239000003054 catalyst Substances 0.000 abstract description 3
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 abstract description 3
- 239000000376 reactant Substances 0.000 abstract description 3
- 230000035484 reaction time Effects 0.000 abstract description 3
- 239000011259 mixed solution Substances 0.000 abstract description 2
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 4
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- YKOLZVXSPGIIBJ-UHFFFAOYSA-N 2-Isopropylaniline Chemical compound CC(C)C1=CC=CC=C1N YKOLZVXSPGIIBJ-UHFFFAOYSA-N 0.000 description 3
- 230000002194 synthesizing effect Effects 0.000 description 3
- WKBALTUBRZPIPZ-UHFFFAOYSA-N 2,6-di(propan-2-yl)aniline Chemical compound CC(C)C1=CC=CC(C(C)C)=C1N WKBALTUBRZPIPZ-UHFFFAOYSA-N 0.000 description 2
- -1 aromatic amine compound Chemical class 0.000 description 2
- 239000012295 chemical reaction liquid Substances 0.000 description 2
- 229940079593 drug Drugs 0.000 description 2
- 239000003814 drug Substances 0.000 description 2
- 239000000543 intermediate Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000000575 pesticide Substances 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 230000036632 reaction speed Effects 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium trichloride Chemical compound Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 description 1
- 230000000844 anti-bacterial effect Effects 0.000 description 1
- 239000002220 antihypertensive agent Substances 0.000 description 1
- 229940127088 antihypertensive drug Drugs 0.000 description 1
- 239000003899 bactericide agent Substances 0.000 description 1
- 150000001718 carbodiimides Chemical class 0.000 description 1
- 238000012824 chemical production Methods 0.000 description 1
- 239000013064 chemical raw material Substances 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 208000012839 conversion disease Diseases 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002363 herbicidal effect Effects 0.000 description 1
- 239000004009 herbicide Substances 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 229920003051 synthetic elastomer Polymers 0.000 description 1
- 239000005061 synthetic rubber Substances 0.000 description 1
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The utility model relates to an aromatic amine alkylation device, which comprises a feeding device, an alkylation reaction device and a receiving and processing device, wherein the feeding device is sequentially connected with the alkylation reaction device and the receiving and processing device through pipelines; the feeding device comprises a reaction kettle, a preheating kettle, a storage tank, a preheating tank, a high-pressure plunger pump and a gas compressor; the alkylation reaction device comprises a static mixer and a reactor; the receiving and processing device comprises a gas-liquid separation device and a hydrolysis kettle. According to the utility model, the mixed solution of the aromatic amine and the catalyst and the olefin are pumped into the mixer through the high-pressure plunger pump and the gas compressor respectively, and the gas and the liquid are fully mixed and then fully reacted through the tubular reactor, so that the aromatic amine alkylation product with high selectivity and high yield is obtained, the reaction is safe, the production risk is low, the mixing time of reactants is reduced, and the reaction time is shortened.
Description
Technical Field
The utility model belongs to the field of chemical production devices, and particularly relates to an aromatic amine alkylation device.
Background
The alkylated aromatic amine compound is a basic chemical raw material and has wide application in the fields of medicines, pesticides, synthetic rubber, plastics and the like. For example, 2, 6-diisopropylaniline is a key intermediate for producing chlorfenuron, is also used for synthesizing herbicide and bactericide in pesticides, is used for synthesizing antihypertensive drugs in medicines, is used for synthesizing carbodiimide in the plastic industry, and can be used for preparing intermediates in the food industry.
The traditional aromatic amine alkylation method is that aromatic amine and catalyst are added into a high-pressure reaction kettle, then olefin is introduced, and the reaction is mainly concentrated near a gas-liquid interface. Because the gas-liquid interface of the kettle reactor is limited, and the gas-liquid transfer speed is low, the reaction speed is low, and the selectivity is poor.
According to the utility model, the mixed solution of the aromatic amine and the catalyst and the olefin are pumped into the mixer through the high-pressure plunger pump and the gas compressor respectively, and the gas and the liquid are fully mixed and then fully reacted through the tubular reactor, so that the aromatic amine alkylation product with high yield and high selectivity is obtained.
Disclosure of Invention
The utility model aims to overcome the defects in the prior art and provide the aromatic amine alkylation device with high reaction speed, complete reaction, high selectivity, high finished product content, high product yield and high production capacity.
In order to achieve the technical purpose, the utility model provides the following technical scheme: an aromatic amine alkylation device comprises a feeding device, an alkylation reaction device and a receiving and processing device, wherein the feeding device is sequentially connected with the alkylation reaction device and the receiving and processing device through pipelines;
the feeding device comprises a reaction kettle, a preheating kettle, a storage tank, a preheating tank, a high-pressure plunger pump and a gas compressor, wherein the reaction kettle is sequentially connected with the preheating kettle and the high-pressure plunger pump through primary pipelines, and the storage tank is sequentially connected with the preheating tank and the gas compressor through secondary pipelines;
the alkylation reaction device comprises a static mixer and a reactor, wherein a discharge port of the static mixer is connected with the reactor through a pipeline;
the receiving and processing device comprises a gas-liquid separation device and a hydrolysis kettle, wherein the lower end of the gas-liquid separation device is connected with the hydrolysis kettle through a recovery pipeline.
Further, the outlet end of the high-pressure plunger pump and the outlet end of the gas compressor are connected with the feed inlet of the static mixer through a feed pipeline;
further, a flowmeter is arranged on a feeding pipeline connected with the inlet of the static mixer at the outlet end of the high-pressure plunger pump and the outlet end of the gas compressor;
further, the reactor is a tubular reactor;
further, the tubular reactor is a heat-tracing tubular reactor;
further, the reaction tubes of the heat tracing type tubular reactor adopt a U-shaped tube connecting structure, and the tube diameters of the reaction tubes of the heat tracing type tubular reactor are equal;
further, the outlet end of the reactor is connected with the feed inlet of the gas-liquid separation device;
further, an air outlet of the gas-liquid separation device is connected with the upper end of the storage tank through a circulating pipeline;
further, a stop valve is arranged on the circulating pipeline;
further, the upper part of the reaction kettle is provided with a nitrogen gas inlet pipeline and a tail gas discharge pipeline.
By adopting the device, compared with the prior art, the utility model has the remarkable advantages that:
1) The tubular reactor replaces the traditional kettle type reactor, reactants are rapidly mixed and react in the reaction device, the liquid holdup is much smaller than that of the traditional kettle type reactor, the reaction is safe, the production risk is low, meanwhile, the mixing time of the reactants is shortened, and the reaction time is shortened;
2) Continuous production can be realized, and the production efficiency is obviously improved;
3) The product has high yield, high purity and high reaction selectivity, and the reaction is superior to the traditional aromatic amine alkylation preparation device.
Drawings
Fig. 1: the utility model relates to an aromatic amine alkylation device;
in the figure: 1-reaction kettle, 2-preheating kettle, 3-high pressure plunger pump, 4-storage tank, 5-preheating tank, 6-gas compressor, 7-static mixer, 8-heat tracing tubular reactor, 9-gas-liquid separation device, 10-hydrolysis kettle, 11-primary pipeline, 12-secondary pipeline, 13-feeding pipeline, 131-flowmeter, 14-circulation pipeline, 141-stop valve, 15-recovery pipeline, 16-nitrogen inlet pipeline, 17-tail gas discharge pipeline.
Detailed Description
In order to make the technical scheme and advantages of the present utility model more apparent, the present utility model will be further described in detail with reference to specific examples, but the scope of the present utility model is not limited thereto.
The aromatic amine alkylation device shown in fig. 1 comprises a feeding device, an alkylation reaction device and a receiving treatment device, wherein the feeding device is sequentially connected with the alkylation reaction device and the receiving treatment device through pipelines;
the feeding device comprises a reaction kettle 1, a preheating kettle 2, a high-pressure plunger pump 3, a storage tank 4, a preheating tank 5 and a gas compressor 6, wherein the reaction kettle 1 is sequentially connected with the preheating kettle 2 and the high-pressure plunger pump 3 through a primary pipeline 11, and the storage tank 4 is sequentially connected with the preheating tank 5 and the gas compressor 6 through a secondary pipeline 12; the upper part of the reaction kettle 1 is provided with a nitrogen inlet pipeline 16 and a tail gas discharge pipeline 17.
The alkylation reaction device comprises a static mixer 7 and a reactor, wherein the reactor is a heat-tracing tubular reactor 8, and a discharge hole of the static mixer 7 is connected with the reactor through a pipeline;
the receiving and processing device comprises a gas-liquid separation device 9 and a hydrolysis kettle 10, wherein the lower end of the gas-liquid separation device 9 is connected with the hydrolysis kettle 10 through a recovery pipeline 15.
Introducing o-isopropylaniline into a reaction kettle 1, adding 3% (w/w) aluminum powder, introducing nitrogen through a nitrogen inlet pipeline 16 arranged at the upper part of the reaction kettle 1 for air replacement, controlling the temperature of the reaction kettle 1 at 280 ℃ after 3 times of nitrogen replacement to prepare a reaction solution containing aniline aluminum, cooling, and discharging hydrogen through a tail gas discharge pipeline 17 arranged at the upper part of the reaction kettle 1. The reaction solution was transferred to the preheating vessel 2 through the primary pipe 11, 3% (w/w) of anhydrous aluminum trichloride was added to the preheating vessel, and the mixture was preheated to 320 ℃.
The propylene is stored in the storage tank 4, and is introduced into the preheating tank 5 through the secondary pipeline 12 to be preheated to 320 ℃.
The outlet ends of the high-pressure plunger pump 3 and the gas compressor 6 are connected with the feed inlet of the static mixer 7 through a feed pipeline 13, and a flowmeter 131 is arranged on the feed pipelines of the outlet ends of the high-pressure plunger pump 3 and the gas compressor 6 and the feed inlet of the static mixer 7. Pumping the catalyzed o-isopropylaniline solution into a static mixer 7 through a high-pressure plunger pump 3, introducing propylene into the static mixer 7 through a gas compressor 6, mixing the two materials through the static mixer 7, and introducing the mixture into a reactor. The flow meter 131 controls the flow rates of the catalyzed solution of o-isopropylaniline and propylene to 200mL/min.
The reactor is a tubular reactor, the tubular reactor is a heat tracing tubular reactor 8, the reaction tubes of the heat tracing tubular reactor 8 adopt a U-shaped tube connection structure, and the tube diameters of the reaction tubes of the heat tracing tubular reactor are equal, and the diameter is 8mm. The reaction temperature of the heat-tracing tubular reactor is controlled to be 320 ℃, the reaction pressure is controlled to be 5.5Mpa, and the reaction liquid is obtained after about 90s of reaction.
The outlet end of the heat-tracing tubular reactor 8 is connected with the feed inlet of the gas-liquid separation device 9, and the reaction liquid is introduced into the gas-liquid separation device 9 through the outlet end of the heat-tracing tubular reactor 8 to carry out gas-liquid separation. The gas outlet of the gas-liquid separation device 9 is connected with the upper end of the storage tank 4 through a circulating pipeline 14. The circulating pipeline 14 is provided with a stop valve 141. The shut-off valve 141 is opened to introduce the separated propylene into the storage tank 4 through the circulation pipe 14 for recycling. The liquid obtained after the gas-liquid separation is introduced into a hydrolysis kettle 10 for hydrolysis treatment through a recovery pipeline 15 to obtain 2, 6-diisopropylaniline.
The device is used for aromatic amine alkylation reaction, the reaction conversion rate and the selectivity are obviously improved, the total yield is greatly improved compared with the prior art, the reaction time is greatly shortened, and the device is fully used for aromatic amine alkylation reaction with good effect.
The above embodiments are only preferred embodiments of the present utility model, and should not be construed as limiting the present utility model, and the protection scope of the present utility model should be defined by the claims, including the technical equivalents of the technical features in the claims, as the protection scope, that is, the equivalent replacement and improvement within the protection scope of the present utility model.
Claims (10)
1. The aromatic amine alkylation device is characterized by comprising a feeding device, an alkylation reaction device and a receiving and processing device, wherein the feeding device is sequentially connected with the alkylation reaction device and the receiving and processing device through pipelines;
the feeding device comprises a reaction kettle, a preheating kettle, a storage tank, a preheating tank, a high-pressure plunger pump and a gas compressor, wherein the reaction kettle is sequentially connected with the preheating kettle and the high-pressure plunger pump through primary pipelines, and the storage tank is sequentially connected with the preheating tank and the gas compressor through secondary pipelines;
the alkylation reaction device comprises a static mixer and a reactor, wherein a discharge port of the static mixer is connected with the reactor through a pipeline;
the receiving and processing device comprises a gas-liquid separation device and a hydrolysis kettle, wherein the lower end of the gas-liquid separation device is connected with the hydrolysis kettle through a recovery pipeline.
2. An aromatic amine alkylation unit according to claim 1, wherein the outlet end of the high pressure plunger pump and the outlet end of the gas compressor are connected to the inlet of the static mixer via a feed line.
3. An aromatic amine alkylation device according to claim 2, wherein a flowmeter is arranged on a feed pipe connecting the outlet end of the high-pressure plunger pump and the outlet end of the gas compressor with the feed inlet of the static mixer.
4. An aromatic amine alkylation unit according to claim 1, wherein the reactor is a tubular reactor.
5. An aromatic amine alkylation unit according to claim 4, wherein the tubular reactor is a heat-transfer tubular reactor.
6. The aromatic amine alkylation device according to claim 5, wherein the reaction tubes of the heat tracing type tubular reactor are of a U-shaped tube connection structure, and the tube diameters of the reaction tubes of the heat tracing type tubular reactor are equal.
7. An aromatic amine alkylation unit according to claim 1, wherein the outlet end of the reactor is connected to the inlet of the gas-liquid separation device.
8. The aromatic amine alkylation device according to claim 1, wherein the gas outlet of the gas-liquid separation device is connected with the upper end of the storage tank through a circulating pipeline.
9. An aromatic amine alkylation unit according to claim 8, wherein the circulation line is provided with a shut-off valve.
10. The aromatic amine alkylation device according to claim 1, wherein a nitrogen inlet pipe and a tail gas outlet pipe are arranged at the upper part of the reaction kettle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321795830.9U CN220276989U (en) | 2023-07-10 | 2023-07-10 | Aromatic amine alkylation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321795830.9U CN220276989U (en) | 2023-07-10 | 2023-07-10 | Aromatic amine alkylation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220276989U true CN220276989U (en) | 2024-01-02 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321795830.9U Active CN220276989U (en) | 2023-07-10 | 2023-07-10 | Aromatic amine alkylation device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220276989U (en) |
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2023
- 2023-07-10 CN CN202321795830.9U patent/CN220276989U/en active Active
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