Waste lubricating oil regeneration hydrogenation reactor

Abstract

The invention relates to the technical field of waste mineral oil treatment, in particular to a waste lubricating oil regeneration hydrogenation reactor which comprises a tank body, and a monitoring mechanism and a controller are arranged in the tank body; the monitoring mechanism comprises a pressure gauge for monitoring the pressure change in the tank body, an oxygen content sensor for monitoring the oxygen content in the tank body, a hydrogen content sensor I for monitoring the hydrogen content in the tank body and a temperature sensor for monitoring the reaction temperature in the tank body; the controller is used for adjusting the hydrogen inlet system and the exhaust system according to data acquired by the pressure gauge and the hydrogen content sensor I; the controller is used for giving an alarm according to data acquired by the oxygen content sensor and starting the emergency system, and the controller is used for adjusting the heating or cooling system according to data acquired by the temperature sensor. Various data of the hydrogenation reaction can be monitored, safety accidents are avoided, and the problem that in the prior art, the hydrogenation reaction process cannot be intelligently monitored, and consequently safety risks exist in waste lubricating oil recovery treatment is solved.

Description

Technical Field

[0001] The invention relates to the technical field of waste mineral oil treatment, in particular to a waste lubricating oil regeneration hydrogenation reactor. Background Art

[0002] Waste mineral oil refers to mineral oil that is extracted and refined from petroleum, coal, and oil shale. During the mining, processing, and use process, the original physical and chemical properties have been changed due to external factors, and it can no longer be used. Waste mineral oil generally needs to be hydrogenated and refined for reuse. When hydrogen is introduced into the waste mineral oil refining device, the insufficient reaction between hydrogen and waste lubricating oil will lead to hydrogen waste, and the excessive hydrogen content in the tail gas poses a safety risk. The presence of oxygen during the reaction may also cause fire or explosion. The existing technology is unable to intelligently monitor the hydrogenation reaction process, resulting in safety risks in the recycling and treatment of waste lubricating oil. To this end, we propose a waste lubricating oil regeneration hydrogenation reactor. Summary of the invention

[0003] The purpose of the present invention is to provide a waste lubricating oil regeneration hydrogenation reactor, which has the advantages of monitoring various data of the hydrogenation reaction and avoiding safety accidents, and solves the problem that the prior art cannot intelligently monitor the hydrogenation reaction process, resulting in safety risks in the recovery and treatment of waste lubricating oil.

[0004] To achieve the above object, the present invention provides the following technical solution: a waste lubricating oil regeneration hydrogenation reactor, comprising a tank body, wherein a monitoring mechanism is arranged inside the tank body, and the monitoring mechanism is used to transmit data to a controller arranged outside the tank body;

[0005] The monitoring mechanism includes a pressure gauge for monitoring pressure changes in the tank, an oxygen content sensor for monitoring the oxygen content in the tank, a hydrogen content sensor for monitoring the hydrogen content in the tank, and a temperature sensor for monitoring the reaction temperature in the tank;

[0006] The controller is used to adjust the hydrogen intake system and the exhaust system according to the data obtained by the pressure gauge and the hydrogen content sensor; the controller is used to alarm and start the emergency system according to the data obtained by the oxygen content sensor; the controller is used to adjust the heating or cooling system according to the data obtained by the temperature sensor;

[0007] The output ends of the pressure gauge, oxygen content sensor, hydrogen content sensor 1 and temperature sensor are all electrically connected to the input end of the controller.

[0008] Preferably, a motor is installed on the top of the tank body, the output end of the controller is electrically connected to the input end of the motor, the output shaft of the motor is connected to the stirring shaft in the tank body, and a stirring frame is installed at the bottom of the stirring shaft.

[0009] Preferably, the hydrogen intake system includes a supercharger for increasing the hydrogen pressure and an intake pipe, the intake pipe is provided with a flow sensor 1 for monitoring the amount of hydrogen intake, the output end of the flow sensor 1 is electrically connected to the input end of the controller, and the output end of the controller is electrically connected to the input end of the supercharger.

[0010] Preferably, the stirring shaft is a hollow shaft, the air inlet pipe is connected to the stirring shaft via a rotating connector and transports hydrogen into the hollow shaft, and a disperser is provided at the bottom of the hollow shaft.

[0011] Preferably, an air pump is provided on the side of the tank body, the air inlet end of the air pump is connected to the top of the tank body through an air suction pipe, the air outlet end of the air pump is connected to the bottom of the tank body through a return pipe, and the output end of the controller is electrically connected to the input end of the air pump.

[0012] Preferably, the emergency system includes an emergency safety valve and a carbon dioxide pipe, the air intake pipe is connected to the carbon dioxide pipe through the emergency safety valve, and the output end of the controller is electrically connected to the input end of the emergency safety valve.

[0013] Preferably, a partition is provided outside the tank body, a cooling cavity is formed between the tank body and the partition, a water inlet pipe is provided at the bottom of the cooling cavity, and an overflow pipe is provided at the top.

[0014] Preferably, a second flow sensor is provided on the overflow pipe, and an output end of the second flow sensor is electrically connected to an input end of the controller.

[0015] Preferably, the top of the tank body is provided with an inlet, the bottom is provided with a discharge port, and the bottom of the tank body is provided with supporting legs.

[0016] Preferably, an exhaust gas emission pipe is provided on the top of the tank body, a second hydrogen content sensor is installed on the exhaust gas emission pipe, and an output end of the second hydrogen content sensor is electrically connected to an input end of the controller.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] The present invention is provided with a monitoring mechanism, which monitors the pressure change in the tank body through a pressure gauge, monitors the oxygen content in the tank body through an oxygen content sensor, monitors the hydrogen content in the tank body through a hydrogen content sensor, and monitors the reaction temperature in the tank body through a temperature sensor; the controller adjusts the hydrogen inlet system and the exhaust system according to the data obtained by the pressure gauge and the hydrogen content sensor; the controller alarms and starts the emergency system according to the data obtained by the oxygen content sensor, and adjusts the heating or cooling system according to the data obtained by the temperature sensor. The problem that the prior art cannot intelligently monitor the hydrogenation reaction process, resulting in safety risks in the recycling and treatment of waste lubricating oil, is solved. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the present invention;

[0020] Figure 2 It is the principle diagram of the monitoring mechanism system of the present invention.

[0021] In the figure: 1. tank body; 2. pressure gauge; 3. oxygen content sensor; 4. hydrogen content sensor 1; 5. temperature sensor; 6. controller; 7. motor; 8. stirring shaft; 9. stirring frame; 10. supercharger; 11. flow sensor 1; 12. rotating connector; 13. disperser; 14. air pump; 15. suction pipe; 16. return pipe; 17. emergency safety valve; 18. carbon dioxide pipe; 19. partition; 20. overflow pipe; 21. water inlet pipe; 22. flow sensor 2; 23. inlet; 24. discharge port; 25. support leg; 26. exhaust pipe; 27. hydrogen content sensor 2. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] Embodiment 1:

[0024] like Figure 1 As shown, a waste lubricating oil regeneration hydrogenation reactor comprises a tank body 1, in which a monitoring mechanism is arranged, and the monitoring mechanism is used to transmit data to a controller 6 arranged outside the tank body 1;

[0025] The monitoring mechanism includes a pressure gauge 2 for monitoring the pressure change in the tank body 1, an oxygen content sensor 3 for monitoring the oxygen content in the tank body 1, a hydrogen content sensor 4 for monitoring the hydrogen content in the tank body 1, and a temperature sensor 5 for monitoring the reaction temperature in the tank body 1;

[0026] The controller 6 is used to adjust the hydrogen intake system and the exhaust system according to the data obtained by the pressure gauge 2 and the hydrogen content sensor 4; the controller 6 is used to alarm and start the emergency system according to the data obtained by the oxygen content sensor 3; the controller 6 is used to adjust the heating or cooling system according to the data obtained by the temperature sensor 5. The hydrogen content sensor 4 uses an electrochemical sensor to detect the hydrogen concentration by measuring the current generated by the oxidation-reduction reaction of hydrogen on the electrode. The hydrogen content sensor uses a zirconium dioxide oxygen sensor;

[0027] like Figure 2As shown, the output ends of the pressure gauge 2, the oxygen content sensor 3, the hydrogen content sensor 4 and the temperature sensor 5 are all electrically connected to the input end of the controller 6.

[0028] Temperature is the main control parameter of the hydrogenation reaction, which affects the activity and reaction rate of the catalyst. The temperature of the reactor or catalyst bed is monitored in real time by setting a temperature sensor 5, and the heating or cooling system is adjusted as needed. The pressure of the hydrogenation reaction is a key parameter affecting the reaction effect and needs to be controlled within a certain range. The pressure change is monitored by setting a pressure gauge 2, and the hydrogen inlet and exhaust systems are adjusted as needed. The presence of oxygen may cause fire or explosion, so the oxygen content in the tank 1 is monitored by the oxygen content sensor 3 to ensure that it is within a safe range.

[0029] Embodiment 2

[0030] like Figure 1 and 2 As shown, on the basis of the first embodiment, a motor 7 is installed on the top of the tank body 1, the output end of the controller 6 is electrically connected to the input end of the motor 7, the output shaft of the motor 7 is connected to the stirring shaft 8 in the tank body 1, and a stirring frame 9 is installed at the bottom of the stirring shaft 8. The stirring frame 9 is driven by the motor 7 to stir the waste lubricating oil so that it reacts fully with the hydrogen.

[0031] The hydrogen inlet system includes a supercharger 10 for increasing the hydrogen pressure and an intake pipe, on which a flow sensor 11 for monitoring the amount of hydrogen inlet is provided, the output end of the flow sensor 11 is electrically connected to the input end of the controller 6, and the output end of the controller 6 is electrically connected to the input end of the supercharger 10. By setting the supercharger 10 to control the hydrogen pressure, the control of the hydrogen flow is crucial for the hydrogenation reaction, and the flow sensor 11 controls the hydrogen flow, thereby ensuring that there is enough hydrogen to fully react with the feedstock oil.

[0032] Embodiment 3

[0033] like Figure 1 and 2 As shown, on the basis of the second embodiment, the stirring shaft 8 adopts a hollow shaft, the air inlet pipe is connected to the stirring shaft 8 through a rotating connector 12 and hydrogen is transported into the hollow shaft, and a disperser 13 is provided at the bottom of the hollow shaft. The waste lubricating oil is hydrogenated through the hollow shaft, so that the hydrogen and the waste lubricating oil can fully react. The setting of the disperser 13 can buffer and disperse the hydrogen, and the dispersed gas can better contact with the waste mineral oil.

[0034] An air pump 14 is provided on the side of the tank body 1, the air inlet end of the air pump 14 is connected to the top of the tank body 1 through the air suction pipe 15, the air outlet end of the air pump 14 is connected to the bottom of the tank body 1 through the return pipe 16, and the output end of the controller 6 is electrically connected to the input end of the air pump 14. By providing the air pump 14, the remaining hydrogen after the reaction on the upper layer of the tank body 1 can be continuously pumped into the waste lubricating oil at the bottom of the tank body 1 for further reaction, so as to reduce the hydrogen content in the tail gas and improve the utilization rate of hydrogen.

[0035] Embodiment 4

[0036] like Figure 1 and 2 As shown, on the basis of the third embodiment, the emergency system includes an emergency safety valve 17 and a carbon dioxide pipe 18, the air intake pipe 15 is connected to the carbon dioxide pipe 18 through the emergency safety valve 17, and the output end of the controller 6 is electrically connected to the input end of the emergency safety valve 17. The emergency system directly uses a pipeline capable of providing carbon dioxide to connect to the air intake pipe 15. When the oxygen content sensor 3 detects the presence of oxygen in the tank body 1, the emergency safety valve 17 is opened, and the carbon dioxide in the carbon dioxide pipe 18 is passed into the tank body 1 under the action of the air pump 14, so as to reduce the oxygen content in the tank body 1 as soon as possible to avoid explosion and complete risk.

[0037] Embodiment 5

[0038] like Figure 1 and 2 As shown, on the basis of the fourth embodiment, a partition 19 is provided outside the tank body 1, a cooling cavity is formed between the tank body 1 and the partition 19, a water inlet pipe 21 is provided at the bottom of the cooling cavity, and an overflow pipe 20 is provided at the top. A flow sensor 22 is provided on the overflow pipe 20, and the output end of the flow sensor 22 is electrically connected to the input end of the controller 6.

[0039] Temperature is the main control parameter of hydrogenation reaction, which affects the activity and reaction rate of catalyst. The temperature of reactor or catalyst bed is monitored in real time by temperature sensor 5, and heating or cooling system is adjusted as needed. Cooling is achieved by setting cooling chamber and injecting cooling water into the cooling chamber. The flow of cooling water is very important for controlling reaction temperature and preventing equipment from overheating, and is monitored and adjusted by setting flow sensor 22.

[0040] Embodiment 6

[0041] like Figure 1 and 2As shown, on the basis of Example 5, an inlet 23 is provided at the top of the tank body 1, a discharge port 24 is provided at the bottom, and a support leg 25 is provided at the bottom of the tank body 1. The inlet 23 is used to add waste lubricating oil and catalyst, and the discharge port 24 is used to discharge the oil after the reaction. Monitoring of hydrogen that has not been completely reacted in the exhaust gas helps to prevent safety risks. An exhaust gas discharge pipe 26 is provided at the top of the tank body 1, and a hydrogen content sensor 27 is installed on the exhaust gas discharge pipe 26. The output end of the hydrogen content sensor 27 is electrically connected to the input end of the controller 6. The hydrogen content sensor 27 can monitor the hydrogen content in the exhaust gas to avoid safety accidents. The hydrogen content sensor adopts an electrochemical sensor to detect the hydrogen concentration by measuring the current generated by the oxidation-reduction reaction of hydrogen on the electrode.

[0042] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A waste lubricating oil regeneration hydrogenation reactor, comprising a tank body (1), characterized in that: A monitoring mechanism is arranged inside the tank body (1), and the monitoring mechanism is used to transmit data to a controller (6) arranged outside the tank body (1); The monitoring mechanism comprises a pressure gauge (2) for monitoring pressure changes in the tank body (1), an oxygen content sensor (3) for monitoring the oxygen content in the tank body (1), a hydrogen content sensor (4) for monitoring the hydrogen content in the tank body (1), and a temperature sensor (5) for monitoring the reaction temperature in the tank body (1); The controller (6) is used to adjust the hydrogen intake system and the exhaust system according to the data obtained by the pressure gauge (2) and the hydrogen content sensor (4); the controller (6) is used to alarm and start the emergency system according to the data obtained by the oxygen content sensor (3); the controller (6) is used to adjust the heating or cooling system according to the data obtained by the temperature sensor (5); The output ends of the pressure gauge (2), the oxygen content sensor (3), the hydrogen content sensor 1 (4) and the temperature sensor (5) are all electrically connected to the input end of the controller (6).

2. A waste lubricating oil regeneration hydrogenation reactor according to claim 1, characterized in that: A motor (7) is installed on the top of the tank body (1), the output end of the controller (6) is electrically connected to the input end of the motor (7), the output shaft of the motor (7) is connected to the stirring shaft (8) in the tank body (1), and a stirring frame (9) is installed at the bottom of the stirring shaft (8).

3. A waste lubricating oil regeneration hydrogenation reactor according to claim 1, characterized in that: The hydrogen intake system comprises a supercharger (10) for increasing the hydrogen pressure and an intake pipe, the intake pipe is provided with a flow sensor (11) for monitoring the amount of hydrogen intake, the output end of the flow sensor (11) is electrically connected to the input end of the controller (6), and the output end of the controller (6) is electrically connected to the input end of the supercharger (10).

4. A waste lubricating oil regeneration hydrogenation reactor according to claim 3, characterized in that: The stirring shaft (8) is a hollow shaft. The air inlet pipe is connected to the stirring shaft (8) via a rotating connector (12) and transports hydrogen into the hollow shaft. A disperser (13) is provided at the bottom of the hollow shaft.

5. The waste lubricating oil regeneration hydrogenation reactor according to claim 1, characterized in that: An air pump (14) is arranged on the side of the tank body (1); an air inlet end of the air pump (14) is connected to the top of the tank body (1) through an air suction pipe (15); an air outlet end of the air pump (14) is connected to the bottom of the tank body (1) through a return pipe (16); and an output end of the controller (6) is electrically connected to an input end of the air pump (14).

6. A waste lubricating oil regeneration hydrogenation reactor according to claim 5, characterized in that: The emergency system comprises an emergency safety valve (17) and a carbon dioxide pipe (18), the air intake pipe (15) is connected to the carbon dioxide pipe (18) via the emergency safety valve (17), and the output end of the controller (6) is electrically connected to the input end of the emergency safety valve (17).

7. A waste lubricating oil regeneration hydrogenation reactor according to claim 1, characterized in that: The tank body (1) is provided with a partition layer (19) outside, a cooling cavity is formed between the tank body (1) and the partition layer (19), a water inlet pipe (21) is provided at the bottom of the cooling cavity, and an overflow pipe (20) is provided at the top.

8. A waste lubricating oil regeneration hydrogenation reactor according to claim 7, characterized in that: The overflow pipe (20) is provided with a second flow sensor (22), and the output end of the second flow sensor (22) is electrically connected to the input end of the controller (6).

9. A waste lubricating oil regeneration hydrogenation reactor according to claim 1, characterized in that: The top of the tank body (1) is provided with an inlet (23), the bottom is provided with a discharge port (24), and the bottom of the tank body (1) is provided with supporting legs (25).

10. A waste lubricating oil regeneration hydrogenation reactor according to claim 1, characterized in that: An exhaust gas discharge pipe (26) is arranged on the top of the tank body (1), and a second hydrogen content sensor (27) is installed on the exhaust gas discharge pipe (26), and an output end of the second hydrogen content sensor (27) is electrically connected to an input end of the controller (6).

Images