Pressurized reflux water diversion production device for 2-hexyl-1-decanol
By using a pressurized reflux water separation production device, which separates the reactants using a condenser and a water separator, and pressurizes the reactor, the problems of low reaction efficiency and high impurities of 2-hexyl-1-decanol are solved, achieving high-efficiency and low-cost production results.
Patent Information
- Application Number
- CN202423262844.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-27
- Publication Date
- 2025-12-16
- Estimated Expiration
- 2034-12-27
AI Technical Summary
The existing technology for 2-hexyl-1-decyl alcohol has low reaction efficiency, many impurities, insufficient yield, long reaction cycle and high cost.
The pressurized reflux water separation production device uses a condenser to condense and a water separator to separate the reaction materials. The positive pressure breather valve is used to increase the pressure, thereby improving the reaction temperature and efficiency and shortening the reaction cycle.
It improved reaction efficiency, reduced costs, increased reaction purity and yield, and shortened reaction time.
Smart Images
Figure CN223669203U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a chemical production processing field especially, relates to a production device of pressure reflux water separation, particularly relates to a production device of pressure reflux water separation of 2 - hexyl - 1 - decanol. BACKGROUND
[0002] 2 - hexyl - 1 - decanol is a common chemical material, 2 - hexyl - 1 - decanol generally uses n - octanol synthesis, and the best reaction temperature for using n - octanol to synthesize 2 - hexyl - 1 - decanol is 210 - 220 DEG C, and the normal pressure boiling point of raw material n - octanol is 195 DEG C, in actual production process, reaction temperature can be kept at the boiling point 195 DEG C of n - octanol for a long time, and 195 DEG C reaction period is as long as 35h, after 30% or so n - octanol is all converted into 2 - hexyl - 1 - decanol after 35h, reaction temperature can be increased to 210 - 220 DEG C, and the best temperature reaction is carried out. The whole reaction week is as long as 50h, and reaction impurities are more. Therefore, how to improve reaction efficiency, reduce impurities and increase yield is the direction that the person skilled in the art needs to strive for. SUMMARY
[0003] The utility model aims at providing a production device of pressure reflux water separation of 2 - hexyl - 1 - decanol, by using the structure, reaction efficiency can be effectively improved, reaction purity is improved, and yield is increased.
[0004] To reach the above-mentioned purpose, the utility model employs technical scheme, a production device of pressure reflux water separation of 2 - hexyl - 1 - decanol, including the reaction kettle and the heating system of the heating of the reaction kettle, be equipped with the import and the export on the reaction kettle, still include condenser, water separator and positive pressure type breathing valve, be equipped with first mouth, second mouth, third mouth and fourth mouth on the water separator, the import and the export of the condenser are connected with the export of the reaction kettle and the first mouth of the water separator respectively through the pipeline, the third mouth of the water separator is connected with the import of the reaction kettle through the reflux pipeline, the second mouth of the water separator is connected with the tail gas pipeline, is equipped with tail gas straight -through valve on the tail gas pipeline, is equipped with the drain pipe on the fourth mouth of the water separator, is equipped with water separation valve on the drain pipe,
[0005] the fourth pipeline is connected on the tail gas pipeline, and the fourth pipeline is arranged at the two ends of the tail gas straight -through valve respectively, and the positive pressure type breathing valve is arranged on the fourth pipeline.
[0006] In the above technical scheme, one valve is arranged on the fourth pipeline at the two ends of the positive pressure type breathing valve respectively.
[0007] In the above technical scheme, the drain pipe between the fourth mouth and the water separation valve is equipped with water separation sight glass.
[0008] The backflow pipeline is provided with a backflow control valve.
[0009] The water distribution bucket is arranged at the outlet of the drain pipe.
[0010] The reaction kettle is further provided with a pressure gauge and a temperature sensor.
[0011] The condenser is a horizontal condenser.
[0012] The first port and the second port are arranged at the top of the water distributor, the fourth port is arranged at the bottom of the water distributor, the third port is arranged on the side wall of the water distributor, and the third port is arranged close to the top of the water distributor.
[0013] Compared with the prior art, the utility model has the following advantages:
[0014] 1. In the utility model, the condenser condenses the materials sent out by the reaction kettle, and sends them into the water distributor, the water is distributed by the water distributor, and the positive pressure breathing valve is used to increase the pressure, increase the boiling point of n-octanol, quickly increase the reaction temperature in the reaction kettle to the optimal reaction temperature, shorten the whole reaction period, improve the reaction efficiency and purity, increase the yield, and reduce the cost. BRIEF DESCRIPTION OF DRAWINGS
[0015] Figure 1 is the structural schematic view of the embodiment one of the utility model.
[0016] 1, reaction kettle; 2, heating system; 3, condenser; 4, water distributor; 5, positive pressure breathing valve; 6, first port; 7, second port; 8, third port; 9, fourth port; 10, backflow pipeline; 11, tail gas pipeline; 12, tail gas straight-through valve; 13, drain pipe; 14, water distribution valve; 15, fourth pipeline; 16, valve; 17, water distribution sight glass; 18, water distribution bucket; 19, backflow control valve; 20, pressure gauge; 21, temperature sensor. DETAILED DESCRIPTION
[0017] The utility model will be further described in connection with the drawings and embodiments:
[0018] Embodiment one: refer to Figure 1As shown, a kind of 2-hexyl-1-decanol pressure reflux water production device, including reaction kettle 1 and the heating system 2 of the heating of the reaction kettle 1, the first port 6, the second port 7, the third port 8 and the fourth port 9 are equipped on the reaction kettle 1, and the outlet is equipped with import and export, still including condenser 3, water separator 4 and positive pressure breathing valve 5, the first port 6 of the water separator 4, the second port 7, the third port 8 and the fourth port 9, the import and export of the condenser 3 are connected with the outlet of the reaction kettle 1 and the first port 6 of the water separator 4 respectively, the third port 8 of the water separator 4 is connected with the import of the reaction kettle 1 by reflux pipeline 10, the second port 7 of the water separator 4 is connected with tail gas pipeline 11, the tail gas pipeline 11 is equipped with tail gas direct valve 12, the fourth port 9 of the water separator 4 is equipped with drain pipe 13, and the drain pipe 13 is equipped with water valve 14;
[0019] The fourth pipeline 15 is connected to the tail gas pipeline 11, and the fourth pipeline 15 is arranged at both ends of the tail gas direct valve 12. The positive pressure breathing valve 5 is arranged on the fourth pipeline 15. The fourth pipeline 15 at both ends of the positive pressure breathing valve 5 is respectively provided with a valve 16.
[0020] In this embodiment, the working principle is as follows: the material (n-octanol) is put into the reaction kettle, and the reaction kettle is started to stir; the condenser is opened, the tail gas straight-through valve is closed, and the valves at both ends of the positive pressure breather valve are opened, so that the fourth pipeline can normally communicate; then the water diversion valve is closed, and the heating system is opened, and the reaction kettle is heated by the heating system, wherein the heating system is set to heat the reaction kettle to 240°C, and the temperature of the material in the reaction kettle gradually rises to 210°C-220°C, and after reaching the temperature, the heat preservation reaction is started. During the heat preservation process, the internal material will be gasified, at the same time, the pressure of the whole reaction system gradually rises, when the pressure in the reaction kettle is greater than 0.03Mpa, the positive pressure breather valve automatically releases the pressure, and the tail gas pipeline is discharged (through the second port of the water separator and from the tail gas pipeline), wherein the tail gas pipeline is connected with the tail gas main (the tail gas main is connected with the tail gas treatment equipment), when the pressure is released to less than or equal to 0.03Mpa, the positive pressure breather valve is automatically closed, and the pressure of the whole system is maintained at 0.03Mpa. At the same time of material vaporization, water is generated (vaporized material contains n-octanol and water vapor), which is sent out through the outlet of the reaction kettle, enters the condenser through the pipeline, and after condensation, the liquid (n-octanol and water) and the pipeline through the outlet of the condenser enter the water separator from the first port. Because n-octanol and water are incompatible, n-octanol is in the upper layer of water, and the upper layer of n-octanol flows out from the third port and returns to the reaction kettle through the reflux pipeline for continuous reaction. Because the capacity of the water separator is limited, in order to prevent the liquid level of water from exceeding the height of the third port, and to facilitate the discharge of water in the water separator, a fourth port and a drain pipe are arranged on the water separator. After a certain time or the water in the water separator reaches a certain liquid level, the water diversion valve is opened for a certain time, the water in the water separator is discharged, and then the water diversion valve is closed.
[0021] In this structure, the reaction kettle can be pressurized, the boiling point of n-octanol is increased to 210°C-240°C, thereby effectively shortening the time of converting n-octanol into 2-hexyl-1-decanol, shortening the whole reaction period to 35h (50h is needed in the prior art, and there are more impurities), compared with the previous way, the reaction time is shortened by 15h, the cost is effectively reduced, the reaction purity is improved, and the yield is increased.
[0022] When the reaction of the whole system is completed, the valve on the fourth pipeline can be closed, and then the tail gas straight-through valve is opened to release the pressure of the whole system, so that the reaction kettle can be opened smoothly.
[0023] Reference Figure 1As shown, the drain pipe 13 between the fourth port 9 and the water segregating valve 14 is provided with a water segregating sight glass 17. The water segregating sight glass is provided to observe whether the liquid released from the water segregator is water when the water segregating valve is opened. If the liquid observed through the water segregating sight glass changes from water to n-octanol, the water segregating valve is closed to prevent the release of n-octanol.
[0024] Referring to Figure 1 As shown, a water segregating bucket 18 is further provided at the outlet of the drain pipe 13. The water segregating bucket is provided to collect the water discharged from the drain pipe.
[0025] Referring to Figure 1 As shown, a backflow control valve 19 is provided on the backflow pipe 10. The backflow control valve is used to control the opening or closing of the backflow pipe. Preferably, the backflow control valve can be a one-way valve. When the reaction kettle is heated, the material vaporizes in the process of high temperature and high pressure. The vaporized material can only be sent from the outlet of the reaction kettle to the condenser, and cannot be sent from the outlet and the backflow pipe to the water segregator, so as not to affect the normal backflow of n-octanol from the water segregator to the reaction kettle.
[0026] Referring to Figure 1 As shown, a pressure gauge 20 and a temperature sensor 21 are further provided on the reaction kettle 1. In this way, the pressure and temperature in the reaction kettle can be observed in real time through the pressure gauge and the temperature sensor.
[0027] Further, the condenser is a horizontal condenser.
[0028] Referring to Figure 1 As shown, the first port 6 and the second port 7 are provided at the top of the water segregator 4, the fourth port 9 is provided at the bottom of the water segregator 4, the third port 8 is provided on the side wall of the water segregator 4, and the third port 8 is provided close to the top of the water segregator 4.
[0029] In the embodiment, the first port and the second port are arranged at the top of the water segregator, the liquid condensed by the condenser can be sent into the first port from the pipeline, and the liquid can flow downward to the bottom of the water segregator under the action of gravity, the second port is also arranged at the top of the water segregator, so that the liquid cannot flow into the tail gas pipeline, and the liquid cannot be discharged with the tail gas pipeline during the pressure relief process. The fourth port is arranged at the bottom of the water segregator, so that when the water segregator is opened, the liquid in the water segregator can flow downward and be discharged through the drain pipe under the action of gravity. The third port is arranged on the side wall of the water segregator and close to the top of the water segregator, so that the n-octanol is above the water surface, and during the water accumulation process, the height of the water surface can rise and push the liquid surface of the n-octanol to rise, until the height of the liquid surface of the n-octanol is not lower than the height of the third port, the n-octanol can flow back to the reaction kettle through the reflux pipeline to continue the reaction. The height of the third port is arranged to be deviated upward from the water segregator, so that the water can be prevented from flowing back to the reaction kettle as much as possible, and the reaction efficiency is ensured.
[0030] Meanwhile, in the embodiment, the heating system is a heat conducting oil heating system.
[0031] In the description of the present application, it should be understood that the terms "upper", "lower", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise specifically limited.
[0032] In the present application, unless otherwise specifically defined and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood in a broad sense, for example, can be fixedly connected, or can be detachably connected, or can be integrated; can be mechanically connected, or can be electrically connected; can be directly connected, or can be indirectly connected through an intermediate medium, for example, two can be connected in a mechanical abutting or abutting manner through abutting, touching and the like, or two can be directly hung or hung through an intermediate medium, or two can be connected in a manner of internal communication or mutual action relationship of two elements. For ordinary skilled persons in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.
Claims
1. A pressurized reflux water separation production apparatus for 2-hexyl-1-decanol, comprising a reaction vessel and a heating system for heating the reaction vessel, wherein the reaction vessel is provided with an inlet and an outlet, characterized in that: The device further comprises a condenser, a water separator and a positive pressure breathing valve, the water separator is provided with a first port, a second port, a third port and a fourth port, the inlet and outlet of the condenser are connected with the outlet of the reaction kettle and the first port of the water separator through pipelines, the third port of the water separator is connected with the inlet of the reaction kettle through a reflux pipeline, the second port of the water separator is connected with a tail gas pipeline, the tail gas pipeline is provided with a tail gas straight-through valve, the fourth port of the water separator is provided with a drain pipe, and the drain pipe is provided with a water separation valve; The tail gas pipeline is connected with a fourth pipeline, the two ends of the fourth pipeline are respectively arranged at the two ends of the tail gas straight-through valve, and the positive pressure breathing valve is arranged on the fourth pipeline.
2. The apparatus for the production of 2-hexyl-1-decanol by pressure reflux water separation according to claim 1, characterized in that: The fourth pipeline at the two ends of the positive pressure breathing valve is respectively provided with a valve.
3. The apparatus for the azeotropic distillation production of 2-hexyl-1-decanol according to claim 1, characterized in that: The drain pipe between the fourth port and the water separation valve is provided with a water separation sight glass.
4. The apparatus for the azeotropic production of 2-hexyl-1-decanol according to claim 1, characterized in that The reflux pipeline is provided with a reflux control valve.
5. The apparatus for the azeotropic production of 2-hexyl-1-decanol according to claim 1, characterized in that The device is further provided with a water separation bucket, which is arranged at the outlet of the drain pipe.
6. The apparatus for the azeotropic production of 2-hexyl-1-decanol according to claim 1, characterized in that The reaction kettle is further provided with a pressure gauge and a temperature sensor.
7. The apparatus for the production of 2-hexyl-1-decanol by pressure reflux water separation according to claim 1, characterized in that: The condenser is a horizontal condenser.
8. The apparatus for the production of 2-hexyl-1-decanol by pressure reflux water separation according to claim 1, characterized in that: The first port and the second port are arranged at the top of the water separator, the fourth port is arranged at the bottom of the water separator, the third port is arranged on the side wall of the water separator, and the third port is arranged close to the top of the water separator.