CN219964843U - Efficient and energy-saving tertiary amine amination reaction system - Google Patents
Efficient and energy-saving tertiary amine amination reaction system Download PDFInfo
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- CN219964843U CN219964843U CN202320878823.9U CN202320878823U CN219964843U CN 219964843 U CN219964843 U CN 219964843U CN 202320878823 U CN202320878823 U CN 202320878823U CN 219964843 U CN219964843 U CN 219964843U
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- Prior art keywords
- water separator
- oil
- amination
- condenser
- tower
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- 238000005576 amination reaction Methods 0.000 title claims abstract description 69
- 150000003512 tertiary amines Chemical class 0.000 title claims abstract description 24
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 110
- 239000000463 material Substances 0.000 claims abstract description 21
- 239000011344 liquid material Substances 0.000 claims abstract description 8
- 230000008676 import Effects 0.000 claims description 2
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 238000009833 condensation Methods 0.000 abstract description 3
- 230000005494 condensation Effects 0.000 abstract description 3
- 238000005265 energy consumption Methods 0.000 abstract description 3
- 230000000630 rising effect Effects 0.000 abstract description 2
- 208000012839 conversion disease Diseases 0.000 abstract 1
- 238000006243 chemical reaction Methods 0.000 description 13
- ROSDSFDQCJNGOL-UHFFFAOYSA-N Dimethylamine Chemical compound CNC ROSDSFDQCJNGOL-UHFFFAOYSA-N 0.000 description 12
- 150000002191 fatty alcohols Chemical class 0.000 description 9
- 239000007788 liquid Substances 0.000 description 6
- 238000010992 reflux Methods 0.000 description 5
- 239000003054 catalyst Substances 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 239000001257 hydrogen Substances 0.000 description 4
- 229910052739 hydrogen Inorganic materials 0.000 description 4
- 238000000926 separation method Methods 0.000 description 4
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 150000002431 hydrogen Chemical class 0.000 description 2
- 230000001174 ascending effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- -1 oil phase for short Chemical class 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
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- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The utility model discloses a high-efficiency energy-saving tertiary amine amination reaction system which comprises an amination kettle, an amination tower, a first-stage condenser, a second-stage condenser, a first-stage oil-water separator and a second-stage oil-water separator, wherein a discharge hole of the amination kettle is connected with the amination tower, a discharge hole at the top of the amination tower is connected with a hot material inlet of the first-stage condenser, a liquid material outlet of the first-stage condenser is connected with the first-stage oil-water separator, a gas material outlet of the first-stage condenser is connected with the second-stage condenser, a liquid material outlet of the second-stage condenser is connected with the second-stage oil-water separator, oil-phase discharge holes of the first-stage oil-water separator and the second-stage oil-water separator are converged into a pipeline to be connected with the amination tower, and circular baffles are horizontally suspended in the first-stage oil-water separator and the second-stage oil-water separator. The utility model adopts fractional condensation to respectively condense the oil phase and the water phase, so that the temperature of the materials returned to the amination tower is increased from 50 ℃ to about 140 ℃, the energy consumption is saved, the gaseous water rising in the amination tower is more beneficial to being removed from the system, and the reaction conversion is quickened.
Description
Technical Field
The utility model belongs to the technical field of tertiary amine amination reaction, and particularly relates to an efficient and energy-saving tertiary amine amination reaction system.
Background
The reaction of dimethylamine and fatty alcohol can generate tertiary amine and water, the reaction is an endothermic reaction, a large amount of heat is required in the whole reaction process to maintain the system in a reflux state, the water generated in the reaction system is continuously removed, the reaction is promoted to continue to the right, and the water generated in the reaction is required to be taken out and separated by means of reflux and circulating gas in the system in actual production.
The temperature of the system for the reaction of dimethylamine and fatty alcohol is 180-250 ℃, the pressure is 0.1-0.4MPa, the mixture of tertiary amine, water, unreacted fatty alcohol and the like generated by the reaction is gasified and enters an amination tower, then the tertiary amine, the fatty alcohol and steam are basically cooled to about 50 ℃ through heat exchange of a condenser, oil phase (50 ℃) is returned to the amination tower after water-oil separation, cold materials (50 ℃) returned to the amination tower collide with ascending tertiary amine, water and unreacted fatty alcohol, and hereinafter referred to as hot materials (180-250 ℃), the hot materials are partially cooled back to the amination kettle, energy is wasted, meanwhile, the water generated by the reaction cannot be well removed from the system, the catalyst activity is influenced, the reaction is slow, more continuous heat is needed, the cold materials which flow back are heated, and the energy consumption is increased.
Disclosure of Invention
In order to solve the defects in the prior art, the utility model aims to provide an efficient and energy-saving tertiary amine amination reaction system.
The specific technical scheme is as follows:
the utility model provides a high-efficient energy-conserving tertiary amine amination reaction system, including the amination cauldron, the amination tower, the primary condenser, the secondary condenser, primary oil water separator and secondary oil water separator, the amination tower is connected to the discharge gate of amination cauldron, the hot material import of primary condenser is connected to the top discharge gate of amination tower, the liquid material exit linkage primary oil water separator of primary condenser, the gaseous material exit linkage secondary condenser of primary condenser, the liquid material exit linkage secondary oil water separator of secondary condenser, primary oil water separator and secondary oil water separator's oil phase discharge gate are assembled into a pipeline and are connected with the amination tower top.
Further, the top outlet of the amination kettle is divided into two pipelines, one pipeline is connected with the amination tower, the other pipeline is connected with the discharge condenser, and the bottom discharge port of the amination tower is connected with the amination kettle.
Further, the water diversion openings at the bottoms of the primary oil-water separator and the secondary oil-water separator are converged into a pipeline which is connected with the water collection tank.
Further, the pipelines of the water distribution openings at the bottoms of the primary oil-water separator and the secondary oil-water separator are respectively provided with an automatic opening cut-off valve which is interlocked with the oil-water interface liquid level meter on the primary oil-water separator and the secondary oil-water separator.
Further, circular baffles are horizontally hung in the primary oil-water separator and the secondary oil-water separator, so that the possibility of oil-water mixing of the oil-water separator is reduced.
Further, the space between the circular baffle and the inner wall of the primary oil-water separator or the secondary oil-water separator is 40-60mm, and the too large part can form vortex, so that the oil phase is not beneficial to floating.
Further, the diameter of the pipeline of the primary condenser connected with the primary oil-water separator is 600-1000mm, the diameter of the pipeline of the secondary condenser connected with the secondary oil-water separator is 600-1000mm, so that the condenser materials can be ensured to be easier to fall down, the diameters of the connecting pipelines of the primary oil-water separator and the secondary oil-water separator and the amination tower are 500-650mm, and the water content of the materials returned to the amination tower after full separation of oil and water is ensured to be extremely low.
Through continuous sampling, the research finds that 70-90% of the materials from the amination tower are tertiary amine and raw materials, namely oil phase for short, 10-20% of water, 5-10% of hydrogen and dimethylamine, and the discharging temperature is between 180 and 250 ℃.
The utility model has the beneficial effects that: the automatic regulating valve automatically controls the cold discharging temperature to be 135-150 ℃, so that the oil phase in the mixed gas from the amination tower is cooled into liquid, water is cooled into liquid water from a gaseous form to a secondary cold, the reaction system is separated by the oil-water separator, most of materials returned to the top of the amination tower are cold cooled oil phases, the temperature is increased from 50 ℃ to about 140 ℃, the energy consumption is saved, the gaseous water rising in the amination tower is more facilitated to be removed from the system, and the high activity of the catalyst is maintained. In order to ensure implementation, the interface liquid level meter is interlocked with the automatic cut-off valve to finish automatic reflux water diversion.
Drawings
FIG. 1 is a schematic flow chart of the present utility model.
In the figure: 1. an amination kettle; 2. an amination tower; 3. a first-stage condenser; 4. a second-stage condenser; 5. a primary oil-water separator; 6. a second-stage oil-water separator; 7. a discharge condenser; 8. a circular baffle.
Detailed Description
The utility model will be further described with reference to the drawings, but the scope of the utility model is not limited thereto.
As shown in figure 1, the efficient tertiary amine amination reaction system comprises an amination kettle 1, an amination tower 2, a first-stage condenser 3, a second-stage condenser 4, a first-stage oil-water separator 5, a second-stage oil-water separator 6 and a discharge condenser 7, wherein the top discharge port of the amination kettle 1 is divided into two pipelines which are respectively connected with the discharge condenser 7 and the amination tower 2, the bottom discharge port of the amination tower 2 is connected with the amination kettle 1, the top discharge port of the amination tower 2 is connected with the hot material inlet of the first-stage condenser 3, the liquid material outlet of the first-stage condenser 3 is connected with the first-stage oil-water separator 5, the gas material outlet of the first-stage condenser 3 is connected with the second-stage condenser 4, the liquid material outlet of the second-stage condenser 4 is connected with the second-stage oil-water separator 6, the oil phase discharge ports of the first-stage oil-water separator 5 and the second-stage oil-water separator 6 are converged into a pipeline which is connected with the amination tower 2, the water phase discharge ports at the bottoms of the primary oil-water separator 5 and the secondary oil-water separator 6 are converged into a pipeline which is connected with a water collecting tank, automatic opening and closing valves are respectively arranged on the pipelines of the water distribution ports at the bottoms of the primary oil-water separator 5 and the secondary oil-water separator 6 and are interlocked with oil-water interface liquid level gauges on the primary oil-water separator 5 and the secondary oil-water separator 6, circular baffle plates 8 are horizontally hung in the primary oil-water separator 5 and the secondary oil-water separator 6, the distance between the circular baffle plates 8 and the inner wall of the primary oil-water separator 5 or the secondary oil-water separator 6 is 40-60mm, the diameter of the pipeline of the primary condenser 3 connected with the primary oil-water separator 5 is 600-1000mm, the diameter of the pipeline of the secondary condenser 4 connected with the secondary oil-water separator 6 is 600-1000mm, the diameter of the connecting pipeline between the primary oil-water separator 5 and the secondary oil-water separator 6 and the amination tower 2 is 500-650mm.
The fatty alcohol and the catalyst enter an amination kettle 1, the temperature is increased to 180-250 ℃ under the hydrogen atmosphere, dimethylamine gas is introduced, the reaction is carried out under the action of the catalyst to generate tertiary amine and water, in order to ensure that water vapor is smoothly removed from the system, a reflux water carrying mode is adopted, reflux components mainly comprise tertiary amine, fatty alcohol, hydrogen, dimethylamine and water, the materials come out of an amination tower 2 and enter a first-stage condenser 3 to be condensed to 135-150 ℃, wherein tertiary amine and fatty alcohol are condensed into a liquid state, enter a first-stage oil-water separator 5 to carry out oil-water separation, enter the amination tower 2, the materials (hydrogen, dimethylamine, a small amount of tertiary amine and fatty alcohol) which are still in a gaseous state after first-stage condensation enter a second-stage condenser 4 to carry out condensation, then enter a second-stage oil-water separator 6 to carry out oil-water separation, and the oil phase content of the materials entering the second-stage condenser 4 is small, so that the influence on the temperature of the heat material of the amination tower 2 is small.
Claims (7)
1. The utility model provides a high-efficient energy-conserving tertiary amine amination reaction system, a serial communication port includes amination kettle (1), amination tower (2), first order condenser (3), second grade condenser (4), first order oil water separator (5) and second grade oil water separator (6), amination tower (2) are connected to the discharge gate of amination kettle (1), the hot material import of first order condenser (3) is connected to the top discharge gate of amination tower (2), the liquid material export of first order condenser (3) is connected first order oil water separator (5), the gas material export of first order condenser (3) is connected second grade condenser (4), the liquid material export of second grade condenser (4) is connected second grade oil water separator (6), a pipeline is assembled into to the oil phase discharge gate of first order oil water separator (5) and second grade oil water separator (6) and is connected with the top of amination tower (2).
2. The efficient and energy-saving tertiary amine amination reaction system as claimed in claim 1 is characterized in that the top outlet of the amination kettle (1) is divided into two pipelines, one pipeline is connected with the amination tower (2), the other pipeline is connected with the discharge condenser (7), and the bottom discharge port of the amination tower (2) is connected with the amination kettle (1).
3. The efficient and energy-saving tertiary amine amination reaction system as claimed in claim 2 is characterized in that the water diversion openings at the bottoms of the primary oil-water separator (5) and the secondary oil-water separator (6) are combined into a pipeline to be connected with a water collection tank.
4. A high-efficiency energy-saving tertiary amine amination reaction system as claimed in claim 3, characterized in that the pipelines of the water diversion openings at the bottoms of the primary oil-water separator (5) and the secondary oil-water separator (6) are respectively provided with an automatic opening cut-off valve which is interlocked with an oil-water interface level meter on the primary oil-water separator (5) and the secondary oil-water separator (6).
5. The efficient and energy-saving tertiary amine amination reaction system as claimed in claim 4 is characterized in that circular baffles (8) are horizontally hung in the primary oil-water separator (5) and the secondary oil-water separator (6).
6. The efficient and energy-saving tertiary amine amination reaction system as claimed in claim 5 is characterized in that the round baffle plate (8) is arranged inside the primary oil-water separator (5) and the secondary oil-water separator (6) and is spaced from the inner wall of the primary oil-water separator (5) or the secondary oil-water separator (6) by 40-60 mm.
7. The efficient and energy-saving tertiary amine amination reaction system is characterized in that the diameter of a pipeline of a primary condenser (3) connected with a primary oil-water separator (5) is 600-1000mm, the diameter of a pipeline of a secondary condenser (4) connected with a secondary oil-water separator (6) is 600-1000mm, and the diameters of pipelines of the primary oil-water separator (5) and the secondary oil-water separator (6) connected with an amination tower (2) are 500-650mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320878823.9U CN219964843U (en) | 2023-04-19 | 2023-04-19 | Efficient and energy-saving tertiary amine amination reaction system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320878823.9U CN219964843U (en) | 2023-04-19 | 2023-04-19 | Efficient and energy-saving tertiary amine amination reaction system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219964843U true CN219964843U (en) | 2023-11-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320878823.9U Active CN219964843U (en) | 2023-04-19 | 2023-04-19 | Efficient and energy-saving tertiary amine amination reaction system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219964843U (en) |
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2023
- 2023-04-19 CN CN202320878823.9U patent/CN219964843U/en active Active
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