Equipment for deeply drawing heavy components of waste lubricating oil

Abstract

The invention relates to the technical field of waste oil treatment, in particular to equipment for deeply drawing heavy components of waste lubricating oil, which comprises a reaction kettle, a monitoring device and a controller for receiving monitoring data, the monitoring device comprises a pressure meter, a timer, a thermal infrared imager and a temperature sensor, the pressure meter is arranged in the reaction kettle, and the timer is arranged in the reaction kettle; the pressure sensor is used for monitoring pressure drop change caused by coking in the reaction kettle, the timer is used for monitoring reaction time, the thermal infrared imager is used for monitoring temperature distribution of the reaction kettle, and the temperature sensor is used for monitoring temperature change in the reaction kettle; the device further comprises an ultrasonic generator and a heating device, wherein the ultrasonic generator is used for playing an ultrasonic role in the process of heating the waste lubricating oil in the reaction kettle by the heating device. The method has the advantages of monitoring the coking condition, avoiding blockage and improving the yield, and solves the problems of low yield of base oil and blockage of green coke in the existing waste oil recovery technology.

Description

Technical Field

[0001] The invention relates to the technical field of waste oil treatment, in particular to a device for deep extraction of heavy components of waste lubricating oil. Background Art

[0002] Among the recycling products of waste mineral oil lubricants in my country, waste lubricants and industrial oils account for the largest market share, exceeding 80%. The main body of most waste mineral oil lubricants is still lubricant base oil, and the deteriorated part of waste mineral oil lubricants is less than 10%. Waste mineral oil lubricants can be used to produce base oil for lubricants. The recycling and comprehensive utilization of waste mineral oil lubricants is of great significance for solving the bottleneck problem of oil supply and demand, improving the utilization rate of existing resources, and protecting the ecological environment.

[0003] The yield of base oil in the existing waste oil recovery technology is low. This is because there are still about 20% of heavy base lubricating oil that has not been extracted in the fraction before 540°C in the vacuum tower bottom oil. It can even be said that this fraction is the most important fraction in the base lubricating oil. Although the yield can be increased by increasing the vacuum tower feed temperature, the temperature increase will directly lead to the cracking of the heavy lubricating oil at the bottom of the tower due to the thermal conversion effect, producing colloids, asphaltene, dry gas and coke. This phenomenon causes adverse effects such as increased pressure drop in the vacuum tower, coke blockage, reduced lubricating oil quality, and reduced yield. In order to avoid the problems of coke blockage and reduced yield, we propose a device for deep extraction of heavy components of waste lubricating oil. Summary of the invention

[0004] The purpose of the present invention is to provide a device for deep extraction of heavy components of waste lubricating oil, which has the advantages of monitoring coking, avoiding blockage and improving yield, and solves the problems of low base oil yield and coking blockage in existing waste oil recovery technology.

[0005] To achieve the above object, the present invention provides the following technical solution: a device for deep extraction of heavy components of waste lubricating oil, comprising a reactor, wherein a motor is provided on the reactor, and an output shaft of the motor is connected to a stirring rod inside the reactor;

[0006] It also includes a monitoring device and a controller that receives monitoring data, wherein the monitoring device includes a pressure gauge, a timer, an infrared thermal imager, and a temperature sensor, wherein the pressure gauge is arranged inside the reactor and is used to monitor the pressure drop change caused by coking inside the reactor, the timer is used to monitor the reaction time, the infrared thermal imager is used to monitor the temperature distribution of the reactor, and the temperature sensor is used to monitor the temperature change inside the reactor;

[0007] It also includes an ultrasonic generator and a heating device, wherein the ultrasonic generator is used to play an ultrasonic role in the process of the heating device heating the waste lubricating oil in the reaction kettle.

[0008] Preferably, the heating device comprises a gas heating furnace and a heating gas pipe, the gas heating furnace (8) is connected to the bottom of the reactor through the heating gas pipe, and a gas valve is provided between the heating gas pipe and the reactor, and an air pump is provided on the heater pipe.

[0009] Preferably, it also includes a cooling device, which is used for rapid cooling of the waste oil after the reaction, and the cooling device includes a water tank, a cooling pipe, an air pump and a cooling air pipe;

[0010] The cooling pipe is placed in the cooling water of the water tank, one end of the cooling pipe is used for air intake, and the other end is connected to the second air pump, the second air pump is connected to the bottom of the reactor through the cooling air pipe, and the connection is provided with a second air valve.

[0011] Preferably, it also includes a cleaning mechanism, which is used to automatically clean the coke in the reactor. The cleaning mechanism includes a water pump, the water inlet end of the water pump is connected to the water tank through a water pipe, the water outlet end of the water pump is connected to the hollow stirring rod through a rotating joint, the stirring rod is connected to a stirring frame, and the stirring rod is evenly distributed with water spray holes.

[0012] Preferably, a water inlet pipe is provided on the top of the water tank, and the water inlet pipe is used to replenish water under the negative pressure of the water tank generated by pumping water by the water pump, and an air inlet pipe is provided on the gas heating furnace.

[0013] Preferably, a discharge port and supporting legs are provided at the bottom of the reactor.

[0014] Preferably, an exhaust valve is provided on the top of the reactor.

[0015] Preferably, an outlet is provided at the top of the reactor, an outlet cover is installed at the outlet, one end of the outlet cover is rotatably connected to the reactor, and the other end is connected to an electric telescopic rod, and the controller is used to control the electric telescopic rod to drive the outlet cover to open and close.

[0016] Preferably, the outlet cover is rotatably connected to the rotating shaft of the outer wall of the reactor through a connecting rod, one end of the electric telescopic rod is fixed on the outer wall of the reactor, and the other end is connected to a sliding rod, which is inserted into the sliding sleeve of the outlet cover and is used to slide along the sliding sleeve when lifting and pressing down the outlet cover.

[0017] Preferably, the controller is provided with a communication module, a display screen and control buttons, and the communication module is used to remotely send data to the terminal.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] The present invention can effectively monitor the pressure drop change inside the reactor by setting a pressure gauge. Since the feed amount of oil products in the reactor remains unchanged, but the pressure drop increases, it indicates that the furnace tube has been coked. The increase in pressure drop is an important indicator for judging the coking of furnace tubes. The thermal state of the entire furnace tube is monitored by setting an infrared thermal imager: the infrared thermal imager is used for coking heating furnace monitoring to provide thermal state information of the entire furnace tube. The monitoring of the coking situation is further realized by setting a timer and a temperature sensor to monitor the heating time and heating temperature. By setting an ultrasonic generator, the strong stirring effect of ultrasonic waves can be used to destroy the "cage effect" during the reaction process, and the impact is minimized, thereby reducing the yield of dry gas and coke, improving the yield of light oil and reaction efficiency, reducing the waste of residual oil resources, and solving the problems of low base oil yield and coke blockage in existing waste oil recovery technologies. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of the present invention;

[0021] Figure 2 This is a schematic diagram of the water tank structure of the present invention;

[0022] Figure 3 It is a schematic diagram of the outlet structure of the present invention.

[0023] In the figure: 1. reactor; 2. motor; 3. stirring rod; 4. pressure gauge; 5. controller; 6. outlet; 7. discharge port; 8. heating air pipe; 9. gas heating furnace; 10. air pump 1; 11. air valve 1; 12. support leg; 13. timer; 14. communication module; 15. display screen; 16. control button; 17. infrared thermal imager; 18. ultrasonic generator; 19. stirring frame; 20. water spray hole; 21. rotary joint; 22. water pump; 23. water tank; 24. water inlet pipe; 25. cooling pipe; 26. air pump 2; 27. cooling air pipe; 28. air valve 2; 29. ​​temperature sensor; 30. exhaust valve; 31. air inlet pipe; 32. outlet cover; 33. connecting rod; 34. rotating shaft; 35. electric telescopic rod; 36. sliding sleeve; 37. sliding rod. DETAILED DESCRIPTION

[0024] 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.

[0025] Embodiment 1:

[0026] like Figure 1As shown, a device for deep extraction of heavy components of waste lubricating oil includes a reactor 1, on which a motor 2 is arranged, and the output shaft of the motor 2 is connected to a stirring rod 3 inside the reactor 1.

[0027] It also includes a monitoring device and a controller 5 that receives monitoring data. The monitoring device includes a pressure gauge 4, a timer 13, an infrared thermal imager 17, and a temperature sensor 29. The pressure gauge 4 is arranged inside the reactor 1 to monitor the pressure drop change caused by coking inside the reactor 1. By arranging the pressure gauge 4, the pressure drop change inside the reactor 1 can be effectively monitored. Since the feed amount of the oil product in the reactor 1 remains unchanged, but the pressure drop increases, it indicates that the furnace tube has coked. The increase in pressure drop is an important indicator for judging the coking of the furnace tube.

[0028] The timer 13 is used to monitor the reaction time, the infrared thermal imager 17 is used to monitor the temperature distribution of the reactor 1, and the temperature sensor 29 is used to monitor the temperature change in the reactor 1; the infrared thermal imager 17 is set to monitor the thermal state of the entire furnace tube: the infrared thermal imager 17 is used to monitor the coking heating furnace and provide thermal state information of the entire furnace tube. This further realizes the monitoring of the coking condition.

[0029] It also includes an ultrasonic generator 18 and a heating device. The ultrasonic generator 18 is used to play an ultrasonic role when the heating device heats the waste lubricating oil in the reactor 1.

[0030] By setting a timer 13 and a temperature sensor 29 to monitor the heating time and the heating temperature, and by setting an ultrasonic generator 18, the strong stirring effect of ultrasound can be used to destroy the "cage effect" during the reaction process, thereby minimizing the impact, thereby reducing the yield of dry gas and coke, improving the yield of light oil and the reaction efficiency, and reducing the waste of residual oil resources.

[0031] Embodiment 2:

[0032] like Figure 1 As shown, on the basis of the first embodiment, the heating device includes a gas heating furnace 9 and a heating gas pipe 8, the gas heating furnace 8 is connected to the bottom of the reactor 1 through the heating gas pipe 8, and a gas valve 11 is provided between the heating gas pipe 8 and the reactor 1, and an air pump 10 is provided on the heater pipe 8. By providing the gas heating furnace 9, air or other inert gas can be heated, and after being heated to above 500 degrees Celsius, it is directly introduced into the reactor 1 to mix with the waste oil, which improves the heating efficiency and avoids the coking phenomenon caused by heating to a certain extent. The gas can also cooperate with the ultrasonic generator 18 to stir the waste oil to a certain extent. When the heating device is not enabled, the gas valve 11 is closed.

[0033] Embodiment three:

[0034] like Figure 1 and2 As shown, on the basis of the second embodiment, a cooling device is further included, and the cooling device is used for quenching the waste oil after the reaction, and the cooling device includes a water tank 23, a cooling pipe 25, an air pump 26 and a cooling air pipe 27. When the reaction is completed, the heating device stops heating, and the air temperature is lowered by the water or coolant in the water tank 23, and then the low-temperature air is introduced into the reactor 1 to achieve quenching to prevent the product from continuing to react, and the temperature in the reactor 1 drops below 100°C, and the liquid product is taken out.

[0035] The cooling pipe 25 is placed in the cooling water of the water tank 23. One end of the cooling pipe 25 is used for air intake, and the other end is connected to the air pump 26. The air pump 26 is connected to the bottom of the reactor 1 through the cooling air pipe 27, and the connection is provided with an air valve 28. The cooling device draws low-temperature air into the reactor 1 through the air pump 26. When the cooling device is not activated, the air valve 28 is closed.

[0036] Embodiment 4:

[0037] like Figure 1 As shown, on the basis of the third embodiment, a cleaning mechanism is further included, and the cleaning mechanism is used to automatically clean the coke in the reactor 1. The cleaning mechanism includes a water pump 22, and the water inlet end of the water pump 22 is connected to the water tank 23 through a water pipe, and the water outlet end of the water pump 22 is connected to the hollow stirring rod 3 through a rotating joint 21. The stirring rod 3 is connected to a stirring and stirring frame 19, and the stirring rod 3 is evenly distributed with water spray holes 20. The cleaning mechanism injects high-pressure water into the stirring rod 3, and the stirring rod 3 sprays the high-pressure water to the inner wall of the reactor 1 through the water spray holes 20 during the stirring process, so as to clean the coke produced by the reaction. During the rotation of the stirring rod 3, the water column rotates with it to clean the inside of the reactor 1.

[0038] A water inlet pipe 24 is provided at the top of the water tank 23, and the water inlet pipe 24 is used to replenish water under the negative pressure of the water tank 23 generated by the water pump 22, and an air inlet pipe 3125 is provided on the gas heating furnace 9. By providing the water inlet pipe 24, the water tank 23 can be replenished with water while pumping water, and the water in the water tank 23 can also provide water cooling for the cooling device.

[0039] Embodiment five:

[0040] like Figure 1 and 3 As shown, on the basis of the fourth embodiment, the bottom of the reactor 1 is provided with a discharge port 7 and a support leg 12. The discharge port 7 facilitates discharge, and the support leg 12 ensures the stability of the reactor 1. An exhaust valve 30 is provided on the top of the reactor 1. The exhaust valve 30 is used to automatically exhaust when the pressure is too high to avoid equipment damage or explosion accidents.

[0041] The top of the reactor 1 is provided with an outlet 6, and an outlet cover 32 is installed at the outlet 6. One end of the outlet cover 32 is rotatably connected to the reactor 1, and the other end is connected to the electric telescopic rod 35. The controller 5 is used to control the electric telescopic rod 35 to drive the outlet cover 32 to open and close. By setting the outlet cover 32, the reactor 1 is ensured to be in a closed state during the heating process. Since the reactor 1 needs to be opened after being heated for a period of time, the electric telescopic rod 35 can be used to realize automatic opening and closing, avoid the safety hazards of manual operation, and improve automation and processing efficiency.

[0042] The outlet cover 32 is rotatably connected to the rotating shaft 34 of the outer wall of the reactor 1 through the connecting rod 33. One end of the electric telescopic rod 35 is fixed to the outer wall of the reactor 1, and the other end is connected to a sliding rod 37. The sliding rod 37 is inserted into the sliding sleeve 36 of the outlet cover 32, and is used to slide along the sliding sleeve 36 when lifting and pressing down the outlet cover 32. By setting the sliding rod 37 and the sliding sleeve 36, the electric telescopic rod 35 is prevented from getting stuck during the lifting process.

[0043] The controller 5 is provided with a communication module 14, a display screen 15 and a control button 16. The communication module 14 is used to send data to the terminal remotely. The controller 5 is a PLC, and the display screen 15 and the control button 16 are convenient for viewing data and setting control parameters.

[0044] 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 device for deep extraction of heavy components of waste lubricating oil, comprising a reactor (1), wherein a motor (2) is arranged on the reactor (1), wherein an output shaft of the motor (2) is connected to a stirring rod (3) inside the reactor (1), and wherein: It also includes a monitoring device and a controller (5) for receiving monitoring data, wherein the monitoring device includes a pressure gauge (4), a timer (13), an infrared thermal imager (17) and a temperature sensor (29), wherein the pressure gauge (4) is arranged inside the reactor (1) and is used to monitor changes in pressure drop caused by coking inside the reactor (1), the timer (13) is used to monitor reaction time, the infrared thermal imager (17) is used to monitor temperature distribution in the reactor (1), and the temperature sensor (29) is used to monitor temperature changes in the reactor (1); It also comprises an ultrasonic generator (18) and a heating device, wherein the ultrasonic generator (18) is used to play an ultrasonic role in the process of heating the waste lubricating oil in the reaction kettle (1) by the heating device.

2. The device for deep extraction of heavy components of waste lubricating oil according to claim 1, characterized in that: The heating device comprises a gas heating furnace (9) and a heating gas pipe (8); the gas heating furnace (8) is connected to the bottom of the reaction kettle (1) via the heating gas pipe (8); a gas valve (11) is provided between the heating gas pipe (8) and the reaction kettle (1); and an air pump (10) is provided on the heater pipe (8).

3. The device for deep extraction of heavy components of waste lubricating oil according to claim 2, characterized in that: It also includes a cooling device, which is used for rapid cooling of the waste oil after the reaction, and the cooling device includes a water tank (23), a cooling pipe (25), an air pump (26) and a cooling air pipe (27); The cooling pipe (25) is placed in the cooling water of the water tank (23). One end of the cooling pipe (25) is used for air intake, and the other end is connected to the second air pump (26). The second air pump (26) is connected to the bottom of the reaction kettle (1) through a cooling air pipe (27), and a second air valve (28) is provided at the connection.

4. The device for deep extraction of heavy components of waste lubricating oil according to claim 3, characterized in that: The invention also comprises a cleaning mechanism, which is used for automatically cleaning the coke in the reaction kettle (1), and comprises a water pump (22). The water inlet end of the water pump (22) is connected to a water tank (23) through a water pipe, and the water outlet end of the water pump (22) is connected to a hollow stirring rod (3) through a rotating joint (21). The stirring rod (3) is connected to a stirring frame (19), and the stirring rod (3) is evenly distributed with water spray holes (20).

5. The device for deep extraction of heavy components of waste lubricating oil according to claim 4, characterized in that: A water inlet pipe (24) is provided on the top of the water tank (23), and the water inlet pipe (24) is used to replenish water under the negative pressure of the water tank (23) generated by the water pump (22). An air inlet pipe (31) (25) is provided on the gas heating furnace (9).

6. The device for deep extraction of heavy components of waste lubricating oil according to claim 1, characterized in that: The bottom of the reaction kettle (1) is provided with a discharge port (7) and supporting legs (12).

7. The device for deep extraction of heavy components of waste lubricating oil according to claim 1, characterized in that: An exhaust valve (30) is provided on the top of the reaction kettle (1).

8. The device for deep extraction of heavy components of waste lubricating oil according to claim 1, characterized in that: The top of the reactor (1) is provided with an outlet (6), and an outlet cover (32) is installed at the outlet (6). One end of the outlet cover (32) is rotatably connected to the reactor (1), and the other end is connected to an electric telescopic rod (35). The controller (5) is used to control the electric telescopic rod (35) to drive the outlet cover (32) to open and close.

9. The device for deep extraction of heavy components of waste lubricating oil according to claim 8, characterized in that: The outlet cover (32) is rotatably connected to a rotating shaft (34) of the outer wall of the reactor (1) via a connecting rod (33); one end of the electric telescopic rod (35) is fixed to the outer wall of the reactor (1); the other end is connected to a sliding rod (37); the sliding rod (37) is inserted into a sliding sleeve (36) of the outlet cover (32) and is used to slide along the sliding sleeve (36) when lifting and pressing down the outlet cover (32).

10. The device for deep extraction of heavy components of waste lubricating oil according to claim 1, characterized in that: The controller (5) is provided with a communication module (14), a display screen (15) and control buttons (16); the communication module (14) is used to remotely send data to a terminal.

Images