CN215842894U - Loop reaction device for preparing hydrogenated oil - Google Patents
Loop reaction device for preparing hydrogenated oil Download PDFInfo
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- CN215842894U CN215842894U CN202120515211.4U CN202120515211U CN215842894U CN 215842894 U CN215842894 U CN 215842894U CN 202120515211 U CN202120515211 U CN 202120515211U CN 215842894 U CN215842894 U CN 215842894U
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Abstract
The utility model discloses a loop reaction device for preparing hydrogenated oil, which comprises a loop reactor storage tank, a discharge buffer tank, a catalyst tank, an external circulation loop, a loop external circulation pump and an external circulation heat exchanger, wherein a jet mixer is arranged above the loop reactor storage tank, one end of the external circulation loop is connected with the jet mixer, the other end of the external circulation loop is connected with the bottom of the loop reactor storage tank, the external circulation loop is respectively provided with the loop external circulation pump and the external circulation heat exchanger, the bottom of the loop reactor storage tank is provided with a reactant discharge port, the reactant discharge port is connected above the discharge buffer tank, the bottom of the discharge buffer tank is provided with a buffer tank discharge port, the loop reactor storage tank is connected with a raw material inlet, and the catalyst tank is arranged between the raw material inlet and the loop reactor storage tank; the loop reaction device for preparing the hydrogenated oil has the advantages of high reaction speed, short reaction time, few byproducts, light product color, little smell and high safety.
Description
Technical Field
The utility model relates to the technical field of production devices of hydrogenated oil, in particular to a loop reaction device for preparing hydrogenated oil.
Background
The hydrogenated oil is obtained by hydrogenating liquid unsaturated fat in animal and vegetable oil under high pressure, and is a common raw material of food additives and plastic chemical additives; the existing industrial production device for producing hydrogenated oil mainly comprises a reaction kettle and a tower; the production process comprises the steps of adding a catalyst and palm oil into a reactor, continuously introducing hydrogen, and controlling certain temperature and pressure to carry out reaction; the producer device has the problems of slow reaction speed, long reaction time, more byproducts, poorer product quality, darker color, lower yield, high production cost and the like, and because the reaction equipment has stirring or flange connection, high-temperature hydrogen leakage is easy to occur to cause explosion, and potential safety hazards exist.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem of providing a loop reaction device for preparing hydrogenated oil, which has the advantages of high reaction speed, short reaction time, few byproducts, light color and luster of products, little smell and high safety.
The technical problem to be solved by the utility model is realized by the following technical scheme:
a loop reaction device for preparing hydrogenated oil comprises a loop reactor storage tank, a discharge buffer tank, a catalyst tank, an external circulation loop, a loop external circulation pump and an external circulation heat exchanger, wherein an injection type mixer is arranged above the loop reactor storage tank, one end of the external circulation loop is connected with the injection type mixer, the other end of the external circulation loop is connected with the bottom of the loop reactor storage tank, the external circulation loop is respectively provided with the loop external circulation pump and the external circulation heat exchanger, the bottom of the loop reactor storage tank is provided with a reactant discharge port, the reactant discharge port is connected above the discharge buffer tank, the bottom of the discharge buffer tank is provided with a buffer tank discharge port, the loop reactor storage tank is connected with a raw material inlet, and the catalyst tank is arranged between the raw material inlet and the loop reactor storage tank, and an emptying valve and a first nitrogen inlet are respectively arranged above the discharging buffer tank, and a gas balance safety valve, a vacuum port, a hydrogen feeding port and a second nitrogen inlet are respectively arranged above the loop reactor storage tank.
Preferably, the discharge buffer tank, the loop reactor storage tank and the catalyst tank are respectively provided with a liquid level meter.
Preferably, the loop reactor storage tank is provided with a heat preservation coil. The heat preservation coil pipe is used for preserving heat of materials when the machine is started and stopped.
Preferably, the reactant outlet is provided with an automatic outlet control valve.
Preferably, the hydrogen inlet is provided with a hydrogen automatic control valve.
Preferably, one end of the external circulation heat exchanger is provided with a steam and cooling water inlet, and the other end of the external circulation heat exchanger is provided with a steam and cooling water outlet.
Advantageous effects
1. The loop reaction device has high reaction efficiency which is about 2 times of that of the kettle type reaction and about 3 times of that of the tower type reaction; the power consumption is mainly a circulating pump, the energy consumption is close to that of a stirrer of the kettle type reaction, and hydrogen can be recycled, so that the waste is reduced;
2. the reaction mainly takes place in the jet mixer, and the temperature and the concentration are ensured to be uniform;
3. due to the high circulation rate of the batch through the external heat exchanger, the temperature control is precise;
4. because the stirring is provided by the external circulating pump, a stirrer with a motor and accessories are not required to be arranged at the top of the stirring device, thereby avoiding leakage and reducing the maintenance cost; and when hydrogen is used for reacting with palm oil to prepare extremely hydrogenated oil, the dangerous grade belongs to class A, and the loop reaction device is compared with the reaction kettle: because rotating equipment such as mechanical stirring and the like is not arranged, leakage is avoided, static electricity cannot be generated, and the safety performance is good;
5. the utility model has good mass transfer effect, almost same material temperature, less reaction by-products, light product color, less smell and short reaction time, and can effectively solve the problems of poor mass transfer effect, large temperature difference between upper and lower materials, change between 7 and 18 ℃, more reaction by-products, dark product color, heavy smell and long reaction time of a reaction kettle or a reaction tower.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Wherein: 1-vent valve, 2-first nitrogen inlet, 3-liquid level meter, 4-discharge buffer tank, 5-buffer tank discharge port, 6-steam and cooling water inlet, 7-external circulation heat exchanger, 8-steam and cooling water outlet, 9-catalyst tank, 10-raw material feed port, 11-loop external circulation pump, 12-reactant discharge port, 13-loop reactor storage tank, 14-jet mixer, 15-gas balance safety valve, 16-vacuum port, 17-hydrogen feed port, 18-hydrogen automatic control valve, 19-second nitrogen inlet, 20-discharge automatic control valve, 21-heat preservation coil pipe, 22-external circulation loop.
Detailed Description
The present invention will be described in further detail with reference to the following drawings and specific examples, which are not intended to limit the utility model in any manner.
Example 1
The loop reactor for preparing hydrogenated oil shown in fig. 1 comprises a loop reactor storage tank 13, a discharge buffer tank 4, a catalyst tank 9, an external circulation loop 22, an external circulation loop 11 and an external circulation heat exchanger 7, wherein an injection mixer 14 is arranged above the loop reactor storage tank 13, one end of the external circulation loop 22 is connected to the injection mixer 14, the other end of the external circulation loop 22 is connected to the bottom of the loop reactor storage tank 13, the external circulation loop 22 is respectively provided with the external circulation loop 11 and the external circulation heat exchanger 7, the bottom of the loop reactor storage tank 13 is provided with a reactant discharge port 12, the reactant discharge port 12 is connected above the discharge buffer tank 4, the bottom of the discharge buffer tank 4 is provided with a buffer tank discharge port 5, and the loop reactor storage tank 13 is connected with a raw material inlet 10, and a catalyst tank 9 is arranged between the raw material feeding port 10 and the loop reactor storage tank 13, an emptying valve 1 and a first nitrogen inlet 2 are respectively arranged above the discharging buffer tank 4, and a gas balance safety valve 15, a vacuum port 16, a hydrogen feeding port 17 and a second nitrogen inlet 19 are respectively arranged above the loop reactor storage tank 13.
In the embodiment, the discharge buffer tank 4, the loop reactor storage tank 13 and the catalyst tank 9 are respectively provided with a liquid level meter 3.
In this embodiment, the loop reactor tank 13 is provided with a holding coil 21.
In this embodiment, the reactant outlet 12 is provided with an automatic outlet control valve 20.
In the present embodiment, the hydrogen inlet 17 is provided with a hydrogen automatic control valve 18.
In this embodiment, one end of the external circulation heat exchanger 7 is provided with a steam and cooling water inlet 6, and the other end of the external circulation heat exchanger 7 is provided with a steam and cooling water outlet 8.
The working principle is as follows: (1) and (3) purging the system: after the pipeline and the equipment are cleaned, the air tightness and the pressure test are qualified, opening a vacuum port 16 to ensure that the loop reactor storage tank 13 reaches the vacuum of-0.098 mpa, then opening a first nitrogen inlet 2 and a second nitrogen inlet 19 to respectively fill nitrogen into the loop reactor storage tank 13 and the discharge buffer tank 4, keeping the normal state of the relevant pipeline, filling nitrogen to the pressure of 0.02mpa, closing a nitrogen valve, and repeating the operation for more than three times to replace air with nitrogen, so that the oxygen content of the system is less than 0.5%;
(2) feeding: the palm oil subjected to vacuum degassing and dehydration is pumped into a loop reactor storage tank 13 from a raw material inlet 10 through a pump, a gas balance safety valve 15 is opened to maintain pressure balance, when a liquid level meter of the loop reactor storage tank 13 reaches a high limit, an alarm signal is sent out, a feeding valve of the raw material inlet 10 is closed in an interlocking manner, and the palm oil is ready to react;
(3) catalyst preparation: adding a certain proportion of nickel catalyst and palm oil into a catalyst tank 9, and sending an alarm signal when a liquid level meter 3 of the catalyst tank 9 reaches a high limit, and closing a catalyst tank feed valve in an interlocking manner;
(4) reaction: starting an external circulation pump 11 of the loop to circulate materials under the pressure of 3.5mpa, (when the external circulation pump 11 of the loop stops pumping, hydrogen feeding is cut off in an interlocking manner, a hydrogen automatic control valve 18 is closed), starting an external circulation heat exchanger 7, opening a steam and cooling water inlet 6, a steam and cooling water outlet 8, opening a steam valve to heat, when the temperature rises to 150 ℃, closing the steam and cooling water inlet 6 to stop heating, starting a hydrogen feeding port 17 and the hydrogen automatic control valve 18, introducing hydrogen into a loop reactor storage tank to start hydrogenation reaction, displaying the temperature of the loop reactor storage tank to control an alarm interlocking instrument, when the temperature is too high or too low, sending an alarm signal so as to control cooling water or steam to enter from the steam and cooling water inlet 6, displaying the pressure of the loop reactor to control the alarm interlocking instrument, when the pressure exceeds a specified number, interlocking to close the hydrogen automatic control valve 18, the reaction temperature is accurately controlled to be between 198 ℃ and 202 ℃, and the reaction lasts for 1.5 h. After the reaction is finished, the loop external circulating pump 11 is closed, the hydrogen automatic control valve 18 is closed in an interlocking manner when the loop external circulating pump 11 stops pumping, hydrogen feeding is cut off, the reactant discharge port 12 and the discharge automatic control valve 20 are opened, the reactant is discharged into the discharge buffer tank 4 and is sent to other workshops for use from the buffer tank discharge port 5, when the liquid level meter 3 of the discharge buffer tank 4 reaches a low limit, an alarm signal is sent, and the discharge automatic control valve 20 is closed in an interlocking manner.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the utility model concepts of the present invention are equivalent to or changed within the technical scope of the present invention.
Claims (6)
1. The loop reaction device for preparing the hydrogenated oil is characterized by comprising a loop reactor storage tank (13), a discharge buffer tank (4), a catalyst tank (9), an external circulation loop (22), a loop external circulation pump (11) and an external circulation heat exchanger (7), wherein a jet mixer (14) is arranged above the loop reactor storage tank (13), one end of the external circulation loop (22) is connected to the jet mixer (14), the other end of the external circulation loop (22) is connected to the bottom of the loop reactor storage tank (13), the external circulation loop (22) is respectively provided with a loop external circulation pump (11) and an external circulation heat exchanger (7), the bottom of the loop reactor storage tank (13) is provided with a reactant discharge hole (12), and the reactant discharge hole (12) is connected above the discharge buffer tank (4), the bottom of ejection of compact buffer tank (4) be provided with buffer tank discharge gate (5), loop reactor storage tank (13) be connected with raw materials pan feeding mouth (10), and be provided with catalyst jar (9) between raw materials pan feeding mouth (10) and loop reactor storage tank (13), the top of ejection of compact buffer tank (4) be provided with atmospheric valve (1) and first nitrogen gas entry (2) respectively, the top of loop reactor storage tank (13) be provided with gas balance relief valve (15), vacuum port (16), hydrogen pan feeding mouth (17) and second nitrogen gas entry (19) respectively.
2. The loop reaction device for preparing the hydrogenated oil according to claim 1, wherein the discharge buffer tank (4), the loop reactor storage tank (13) and the catalyst tank (9) are respectively provided with a liquid level meter (3).
3. A loop reactor device for preparing hydrogenated oil according to claim 1, wherein the loop reactor tank (13) is provided with a heat-insulating coil (21).
4. A loop reactor device for preparing hydrogenated oil according to claim 1, wherein the reactant outlet (12) is provided with an automatic outlet control valve (20).
5. A loop reactor device for preparing hydrogenated oil according to claim 1, wherein said hydrogen inlet (17) is provided with an automatic hydrogen control valve (18).
6. A loop reaction device for preparing hydrogenated oil according to claim 1, wherein one end of the external circulation heat exchanger (7) is provided with a steam and cooling water inlet (6), and the other end of the external circulation heat exchanger (7) is provided with a steam and cooling water outlet (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120515211.4U CN215842894U (en) | 2021-03-11 | 2021-03-11 | Loop reaction device for preparing hydrogenated oil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120515211.4U CN215842894U (en) | 2021-03-11 | 2021-03-11 | Loop reaction device for preparing hydrogenated oil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215842894U true CN215842894U (en) | 2022-02-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120515211.4U Active CN215842894U (en) | 2021-03-11 | 2021-03-11 | Loop reaction device for preparing hydrogenated oil |
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| Country | Link |
|---|---|
| CN (1) | CN215842894U (en) |
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2021
- 2021-03-11 CN CN202120515211.4U patent/CN215842894U/en active Active
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