Tail gas recovery device after hydrofining of lubricating oil

Abstract

The invention relates to the technical field of lubricating oil production equipment, in particular to a tail gas recovery device after hydrofining of lubricating oil. The invention provides a lubricating oil hydrofined tail gas recovery device capable of circularly purifying, which comprises a first mounting plate serving as a mounting carrier of parts; the first storage frame is connected to the upper side surface of the first mounting plate; the mounting frame is connected to the first storage frame; and the first conveying pipe is communicated with the lower part of the mounting frame. A water pump is started, a water inlet of the water pump pumps spraying liquid, a second conveying pipe and a third conveying pipe convey the spraying liquid to the upper portion and the lower portion of a mounting frame, tail gas enters the mounting frame through an output pipe, the tail gas reacts with the spraying liquid on the lower portion of the mounting frame, the tail gas passes through a flow dividing ball to form multiple gas flows, and the gas flows secondarily react with the spraying liquid on an aeration head. After secondary reaction, the gas enters a second storage frame through a fourth conveying pipe and returns to the mounting frame through a third conveying pipe for repeated purification operation.

Description

Technical Field

[0001] The present invention relates to the technical field of lubricating oil production equipment, and in particular, to a tail gas recovery device after hydrofining of lubricating oil. Background Art

[0002] At present, when lubricating oil is hydrofined, due to the presence of sulfur, nitrogen, and oxygen in the lubricating oil, harmful gases such as hydrogen sulfide will be generated. At the same time, when the lubricating oil containing these harmful gases is discharged, part of the lubricating oil will be carried out. There will also be residual impurity gases such as hydrogen sulfide in the tail gas. After such lubricating oil is recovered, due to the presence of a small amount of impurity gases generated during lubricating oil refining, the product quality is affected. Treating the tail gas containing impurity gases and lubricating oil as waste will cause product waste.

[0003] For example, the patent application document with the publication number CN211435680U and the publication date of September 8, 2020 discloses a tail gas recovery system after hydrofining of lubricating oil, including an adsorption chamber. An aeration head is arranged inside the lower end of the adsorption chamber. The aeration head and the adsorption chamber are fixedly connected by a clamping method. A bottom chamber is arranged at the bottom end of the adsorption chamber. The bottom chamber and the adsorption chamber are fixedly connected by a welding method. Blocking components are symmetrically arranged inside the adsorption chamber. The blocking components and the adsorption chamber are fixedly connected by a clamping method. A stirring device is arranged at the top end of the adsorption chamber. The stirring device and the adsorption chamber are fixedly connected. A second chamber body is arranged on the side of the adsorption chamber. The second chamber body and the adsorption chamber are fixedly connected.

[0004] The above patent is a single process throughout the process of purifying and recovering tail gas, without repeated purification operations for purification.

[0005] In summary, there is an urgent need for a tail gas recovery device after hydrofining of lubricating oil that can circulate and purify to solve the above problems. Summary of the Invention

[0006] In order to overcome the disadvantage that the above patent is a single process and has no repeated purification operation for purification, the technical problem to be solved by the present invention is to provide a tail gas recovery device after hydrofining of lubricating oil that can circulate and purify.

[0007] An exhaust gas recovery device after hydrofining of lubricating oil, comprising a first mounting plate, which is a mounting carrier for parts; a first storage frame, connected to the upper side of the first mounting plate; a mounting frame, connected to the first storage frame; a first delivery pipe, communicating with the lower part of the mounting frame; a second mounting plate, connected to a position below the middle of the mounting frame, and a delivery hole is opened on the second mounting plate; a third mounting plate, connected to the upper part inside the mounting frame; an output pipe, communicating with the third mounting plate; an aeration head, connected to a position above the middle of the mounting frame; a shunt ball, connected to the middle of the mounting frame, and the aeration head is located between the shunt ball and the second mounting plate.

[0008] Optionally, it further includes a spraying component with a spraying function. The spraying component includes water pumps, and the number of water pumps is set to two. The two water pumps are installed in the first storage frame; a second delivery pipe, communicating with one of the water pumps, and the other end of the second delivery pipe passes through the lower part of the mounting frame and is located between the first storage frame and the second mounting plate; a third delivery pipe, communicating with the other water pump, and the other end of the third delivery pipe passes through the upper part of the mounting frame and is located between the aeration head and the third mounting plate; a spray head, connected to the second delivery pipe and the third delivery pipe.

[0009] Optionally, it further includes a circulating component capable of circulating operation. The circulating component includes a second storage frame, connected to the upper side of the first mounting plate, and the right side wall of the second storage frame is connected to the first storage frame; a fourth delivery pipe, communicating between the second storage frame and the third mounting plate; a fifth delivery pipe, communicating between the second storage frame and the lower part of the mounting frame.

[0010] Optionally, it further includes a collecting component with a collecting function. The collecting component includes a sixth delivery pipe, communicating with the mounting frame; a seventh delivery pipe, communicating with the upper inner side of the first storage frame; an eighth delivery pipe, connected to the right side of the first storage frame, one end of the eighth delivery pipe is connected to the seventh delivery pipe, and the other end of the sixth delivery pipe is connected to the eighth delivery pipe.

[0011] Optionally, it further includes a control component with a control function. The control component includes a transmission shaft, rotatably connected to the side of the mounting frame through a bushing, and the bottom end of the transmission shaft extends into the fifth delivery pipe; a ball valve, connected to the bottom end of the transmission shaft, for conveniently delivering the purified gas to the mounting frame; a baffle, connected to the top end of the output pipe, and a circulation hole is opened on the baffle; a rotating disk, rotatably arranged on the output pipe, and another circulation hole is opened on the rotating disk, and the baffle is located in the lower part inside the rotating disk; a pulley, connected to the top end of the seventh delivery pipe; a flat belt, wound between the rotating disk and the pulley.

[0012] Optionally, it further includes a separation component with a separation function. The separation component includes a ninth delivery pipe rotatably communicated with the eighth delivery pipe; a delivery rod connected to the third mounting plate and communicated with the ninth delivery pipe; a first oil-attaching plate, with the number of the first oil-attaching plates set to three, and the three first oil-attaching plates are connected inside the delivery rod; a second oil-attaching plate connected inside the delivery rod, with the second oil-attaching plate located above the first oil-attaching plate for attaching the lubricating oil in the gas; a discharge pipe connected to the upper part of the mounting frame, and the other end of the discharge pipe is communicated with the third mounting plate and located below the delivery rod for discharging the lubricating oil.

[0013] Optionally, the shunt ball is evenly spaced with shunt holes for dividing the tail gas into multiple airflows.

[0014] Optionally, the eighth delivery pipe is connected to the first storage frame in a U shape, and one end of the eighth delivery pipe is connected to the seventh delivery pipe.

[0015] Optionally, a contact plate is connected to the lower part of the delivery rod, and the lubricating oil in the reacted gas can fall onto the third mounting plate through the contact plate and be discharged through the discharge pipe.

[0016] Optionally, the discharge pipe is connected to the upper part of the mounting frame in an L shape.

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

[0018] 1. In the present invention, by starting the water pump, the water pump inlet pumps the spraying liquid, and the second delivery pipe and the third delivery pipe transport the spraying liquid to the upper and lower parts of the mounting frame. The tail gas enters the mounting frame through the output pipe, reacts with the spraying liquid at the lower part of the mounting frame, passes through the shunt ball to form multiple airflows and reacts with the spraying liquid on the aeration head for the second time. After the second reaction, the gas enters the second storage frame through the fourth delivery pipe and returns to the mounting frame through the third delivery pipe for repeated purification operations.

[0019] 2. In the present invention, the spraying liquid is transported to the first storage frame under the action of gravity through the transmission shaft, the ball valve and the eighth delivery pipe, and then the above operations are carried out to carry out a new round of purification of the tail gas. Such operations can realize the recycling of the spraying liquid and the repeated purification of the tail gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional structure diagram of the present invention.

[0021] Figure 2 It is a three-dimensional structure diagram of the first mounting plate, the first delivery pipe and the first storage frame of the present invention.

[0022] Figure 3 It is a cross-sectional view of the spraying component of the present invention.

[0023] Figure 4 This is a cross-sectional view of the circulation component of the present invention.

[0024] Figure 5 This is an enlarged three-dimensional structural schematic diagram of the aeration head and the flow splitting ball of the present invention.

[0025] Figure 6 This is a cross-sectional view of the collection component of the present invention.

[0026] Figure 7 This is a three-dimensional structural schematic diagram of the mounting bracket and the fifth delivery pipe of the present invention.

[0027] Figure 8 This is a partially enlarged cross-sectional view of the control component of the present invention.

[0028] Figure 9 This is an enlarged cross-sectional view of the separation component of the present invention.

[0029] Names and serial numbers of components in the figure: 1. First mounting plate, 101. First delivery pipe, 2. First storage frame, 3. Mounting bracket, 4. Second mounting plate, 401. Third mounting plate, 5. Output pipe, 6. Aeration head, 7. Flow splitting ball, 8. Spraying component, 801. Water pump, 802. Second delivery pipe, 803. Third delivery pipe, 804. Spraying head, 9. Circulation component, 901. Second storage frame, 902. Fourth delivery pipe, 903. Fifth delivery pipe, 10. Collection component, 1001. Sixth delivery pipe, 1002. Seventh delivery pipe, 1003. Eighth delivery pipe, 11. Control component, 1101. Transmission shaft, 1102. Ball valve, 1103. Rotating disk, 1104. Baffle plate, 1105. Pulley, 1106. Flat belt, 12. Separation component, 1201. Ninth delivery pipe, 1202. Delivery rod, 1203. First oil-attaching plate, 1204. Second oil-attaching plate, 1205. Discharge pipe. Detailed implementation manners

[0030] The following further illustrates the technical solution with specific embodiments. It should be noted that: The words indicating directions such as up, down, left, and right mentioned herein are only in terms of the positions of the shown structures in the corresponding drawings. The serial numbers assigned to the components herein, for example: first, second, etc., are only used to distinguish the described objects and do not have any sequential or technical meanings. And as used in this application: connection, coupling, unless otherwise specified, both include direct and indirect connection (coupling).

[0031] Embodiment: An exhaust gas recovery device after hydrofining of lubricating oil, as Figures 1-5As shown, it includes a first mounting plate 1, a first conveying pipe 101, a first storage frame 2, a mounting bracket 3, a second mounting plate 4, a third mounting plate 401, an output pipe 5, an aeration head 6 and a flow splitting ball 7. The first mounting plate 1 is the mounting carrier for parts. The upper side of the first mounting plate 1 is welded with the first storage frame 2. The first storage frame 2 is welded with the mounting bracket 3. The lower part of the mounting bracket 3 is connected to the first conveying pipe 101. The second mounting plate 4 is welded at a position below the middle of the mounting bracket 3. A conveying hole is opened on the second mounting plate 4. The third mounting plate 401 is welded in the upper part of the mounting bracket 3. The output pipe 5 is connected to the third mounting plate 401. The aeration head 6 is connected at a position above the middle of the mounting bracket 3. The flow splitting ball 7 is connected in the middle of the mounting bracket 3. The aeration head 6 is located between the flow splitting ball 7 and the second mounting plate 4. The flow splitting ball 7 is evenly and spacedly provided with flow splitting holes, which can be used to divide the tail gas into multiple airflows. The aeration head 6 can prevent the spraying liquid above the mounting bracket 3 from falling into the first storage tank 2. The first conveying pipe 101 is used to facilitate the entry of the tail gas into the mounting bracket 3.

[0032] As Figure 3 shown, it further includes a spraying assembly 8 with a spraying function. The spraying assembly 8 includes a water pump 801, a second conveying pipe 802, a third conveying pipe 803 and a spraying head 804. Two water pumps 801 are installed in the first storage frame 2. One water pump 801 is connected to the second conveying pipe 802. The other end of the second conveying pipe 802 passes through the lower part of the mounting bracket 3 and is located between the first storage frame 2 and the second mounting plate 4. The other water pump 801 is connected to the third conveying pipe 803. The other end of the third conveying pipe 803 passes through the upper part of the mounting bracket 3 and is located between the aeration head 6 and the third mounting plate 401. Spraying heads 804 are connected to the second conveying pipe 802 and the third conveying pipe 803. By starting the water pump 801, the water inlet of the water pump 801 pumps the spraying liquid, which is conveyed through the second conveying pipe 802 and the third conveying pipe 803 and sprayed by the spraying heads 804 to the upper and lower parts of the mounting bracket 3.

[0033] As Figure 4 shown, it further includes a circulating assembly 9 that can operate in a cycle. The circulating assembly 9 includes a second storage frame 901, a fourth conveying pipe 902 and a fifth conveying pipe 903. The second storage frame 901 is welded on the upper side of the first mounting plate 1. The right side wall of the second storage frame 901 is connected to the first storage frame 2. A fourth conveying pipe 902 is connected between the second storage frame 901 and the third mounting plate 401. A fifth conveying pipe 903 is connected between the second storage frame 901 and the lower part of the mounting bracket 3. The purified gas is conveyed through the fourth conveying pipe 902 into the second storage frame 901, and then the gas is conveyed through the fifth conveying pipe 903 to the mounting bracket 3 for a new round of purification operation.

[0034] When the device needs to be used, first, the staff starts the water pump 801. The water inlet of the water pump 801 pumps the spraying liquid in the first storage frame 2, and pumps it out through the second delivery pipe 802 and the third delivery pipe 803. The spraying liquid is respectively sprayed on the upper and lower parts of the mounting rack 3 through the spray head 804. Connect the equipment with tail gas to the first delivery pipe 101. Then, the tail gas enters the lower part of the mounting rack 3 through the first delivery pipe 101. After the tail gas is output, the staff disconnects the equipment loaded with tail gas from the first delivery pipe 101 and closes the first delivery pipe 101. The tail gas in the lower part of the mounting rack 3 reacts with the adjacent spraying liquid. The reacted gas moves upward and enters the shunt ball 7 through the delivery holes on the second mounting plate 4, and then exits from the shunt ball 7 to form multiple airflows. Then, it undergoes a secondary reaction with the spraying liquid under the second mounting plate 4 through the aeration head 6. The gas after the secondary reaction can enter the second storage frame 901 through the fourth delivery pipe 902, and then enter the lower part of the mounting rack 3 through the fifth delivery pipe 903 to repeat the above operations to purify and refine the tail gas. Then, open the output pipe 5, and the purified tail gas is discharged through the output pipe 5. Finally, the staff closes the water pump 801. The above content can repeatedly purify the tail gas.

[0035] As Figure 6 shown, it further includes a collection component 10 with a collection function. The collection component 10 includes a sixth delivery pipe 1001, a seventh delivery pipe 1002, and an eighth delivery pipe 1003. The sixth delivery pipe 1001 is connected to the mounting rack 3, the upper side surface in the first storage frame 2 is connected to the seventh delivery pipe 1002, and the right side surface of the first storage frame 2 is connected to the eighth delivery pipe 1003. The eighth delivery pipe 1003 is U-shaped, one end of the eighth delivery pipe 1003 is connected to the seventh delivery pipe 1002, and the other end of the sixth delivery pipe 1001 is connected to the eighth delivery pipe 1003. The spraying liquid on the mounting rack 3 is transported to the first storage tank 2 through the sixth delivery pipe 1001, the seventh delivery pipe 1002, and the eighth delivery pipe 1003, facilitating a new round of purification operation.

[0036] According to the above operation content, the spraying liquid on the upper and lower parts of the mounting rack 3 will be transported to the first storage frame 2 through the sixth delivery pipe 1001, the seventh delivery pipe 1002, and the eighth delivery pipe 1003 under the action of gravity. Then, according to the above operation content, the spraying liquid in the first storage frame 2 is respectively sprayed on the upper and lower parts of the mounting rack 3, so as to purify the tail gas. Part of the spraying liquid will remain in the seventh delivery pipe 1002 to prevent the tail gas from entering the seventh delivery pipe 1002 and the eighth delivery pipe 1003 through the sixth delivery pipe 1001 and finally entering the mounting rack 3 to react with the spraying liquid. Such an operation can realize the recycling of the spraying liquid and the repeated purification operation of the tail gas.

[0037] As Figures 7-9As shown in the figure, it also includes a control component 11 with control functions. The control component 11 includes a transmission shaft 1101, a ball valve 1102, a rotating disk 1103, a baffle 1104, a pulley 1105, and a flat belt 1106. The side of the mounting frame 3 is rotatably connected to the transmission shaft 1101 through a bushing. The bottom end of the transmission shaft 1101 extends into the fifth delivery pipe 903. The bottom end of the transmission shaft 1101 is connected to the ball valve 1102, which is used to conveniently deliver the purified gas to the mounting frame 3. The top end of the output pipe 5 is connected to the baffle 1104, and a flow hole is opened on the baffle 1104. The output pipe 5 is rotatably provided with a rotating disk 1103, and another flow hole is opened on the rotating disk 1103. The baffle 1104 is located in the lower part inside the rotating disk 1103. The top end of the seventh delivery pipe 1002 is connected to the pulley 1105, and a flat belt 1106 is wound between the rotating disk 1103 and the pulley 1105.

[0038] The staff rotates the pulley 1105, and the pulley 1105 drives the transmission shaft 1101 and the ball valve 1102 to rotate and open. The gas in the second storage box 901 enters the mounting frame 3 through the third delivery pipe 803 for reaction. While the pulley 1105 rotates, it drives the rotating disk 1103 to rotate through the flat belt 1106, so that the flow hole on the rotating disk 1103 is located above the flow hole on the baffle 1104. The gas that has completed the secondary reaction is discharged through the flow hole on the rotating disk 1103. Such an operation can achieve the synchronization of opening the ball valve 1102 and discharging the gas through the rotating disk 1103.

[0039] As Figure 9 As shown in the figure, it also includes a separation component 12 with separation functions. The separation component 12 includes a ninth delivery pipe 1201, a delivery rod 1202, a first oil-attaching plate 1203, a second oil-attaching plate 1204, and a discharge pipe 1205. The eighth delivery pipe 1003 is rotatably connected to the ninth delivery pipe 1201. The delivery rod 1202 is welded to the third mounting plate 401, and the delivery rod 1202 is communicated with the ninth delivery pipe 1201. Three first oil-attaching plates 1203 are connected inside the delivery rod 1202, and a second oil-attaching plate 1204 is connected inside the delivery rod 1202. The second oil-attaching plate 1204 is located above the first oil-attaching plate 1203. The upper part of the mounting frame 3 is connected to the discharge pipe 1205, and the other end of the discharge pipe 1205 is communicated with the third mounting plate 401 and is located below the delivery rod 1202. The discharge pipe 1205 is connected to the upper part of the mounting frame 3 in an L shape. A contact plate is connected to the lower part of the delivery rod 1202. The lubricating oil in the gas after the reaction can fall onto the third mounting plate 401 through the contact plate and be discharged through the discharge pipe 1205. The gas discharged from the rotating disk 1103 is delivered to the delivery rod 1202 through the ninth delivery pipe 1201. The lubricating oil in the gas adheres to the first oil-attaching plate 1203 and the second oil-attaching plate 1204, and then falls onto the third mounting plate 401 under the action of gravity and is discharged through the discharge pipe 1205.

[0040] According to the above operation content, the gas after the secondary reaction is discharged from the rotating disk 1103, and the gas is conveyed to the conveying rod 1202 through the ninth conveying pipe 1201. The lubricating oil in the gas will adhere to the first oil adhering plate 1203 and the second oil adhering plate 1204. Finally, the lubricating oil adhering to the first oil adhering plate 1203 and the second oil adhering plate 1204 falls onto the third mounting plate 401 under the action of gravity and is discharged through the discharge pipe 1205, and the staff collects it. Such an operation can separate the lubricating oil in the tail gas, which is convenient for the staff to collect the lubricating oil in the tail gas and prevent waste.

[0041] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit the protection scope of the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the essence and scope of the technical solutions of the present invention.

Claims

1. An exhaust gas recovery device after hydrofining of lubricating oil, comprising a first mounting plate (1), which is a mounting carrier for parts; a first storage frame (2), connected to the upper side of the first mounting plate (1) and used for storing spraying liquid; a mounting frame (3), connected to the first storage frame (2); a first delivery pipe (101), communicated with the lower part of the mounting frame (3); a second mounting plate (4), connected to the lower-middle position inside the mounting frame (3), and a delivery hole is formed on the second mounting plate (4); a third mounting plate (401), connected to the upper part inside the mounting frame (3); an output pipe (5), communicated with the third mounting plate (401); characterized in that, It further includes an aeration head (6) connected to the upper-middle position of the mounting frame (3) for dividing the tail gas into multiple airflows to accelerate the purification of the tail gas; a shunt ball (7) connected to the middle part of the mounting frame (3), and the aeration head (6) is located between the shunt ball (7) and the second mounting plate (4).

2. The tail gas recovery device after hydrofining of lubricating oil according to claim 1, characterized in that, It further includes a spraying assembly (8) with a spraying function. The spraying assembly (8) includes water pumps (801), and the number of water pumps (801) is set to two. The two water pumps (801) are installed in the first storage frame (2); a second delivery pipe (802) is connected to one of the water pumps (801), and the other end of the second delivery pipe (802) passes through the lower part of the mounting frame (3) and is located between the first storage frame (2) and the second mounting plate (4); a third delivery pipe (803) is connected to the other water pump (801), and the other end of the third delivery pipe (803) passes through the upper part of the mounting frame (3) and is located between the aeration head (6) and the third mounting plate (401) for delivering the spraying liquid to the mounting frame (3); spraying nozzles (804) are connected to the second delivery pipe (802) and the third delivery pipe (803) for spraying the spraying liquid to the corresponding positions.

3. The tail gas recovery device after hydrorefining of lubricating oil according to claim 2, characterized in that, It further includes a circulation assembly (9) capable of cyclic operation. The circulation assembly (9) includes a second storage frame (901) connected to the upper side surface of the first mounting plate (1), and the right side wall of the second storage frame (901) is connected to the first storage frame (2); a fourth delivery pipe (902) is connected between the second storage frame (901) and the third mounting plate (401); a fifth delivery pipe (903) is connected between the second storage frame (901) and the lower part of the mounting frame (3) for delivering the purified gas.

4. The tail gas recovery device after hydrorefining of lubricating oil according to claim 3, characterized in that, It further includes a collection assembly (10) with a collection function. The collection assembly (10) includes a sixth delivery pipe (1001) connected to the mounting frame (3); a seventh delivery pipe (1002) connected to the upper side surface inside the first storage frame (2); an eighth delivery pipe (1003) connected to the right side surface of the first storage frame (2), one end of the eighth delivery pipe (1003) is connected to the seventh delivery pipe (1002), and the other end of the sixth delivery pipe (1001) is connected to the eighth delivery pipe (1003) for delivering the spraying liquid to the first storage frame (2).

5. A tail gas recovery device after hydrofining of lubricating oil according to claim 4, characterized in that, It further includes a control component (11) with control functions. The control component (11) includes a transmission shaft (1101) rotatably connected to the side of the mounting frame (3) through a bushing. The bottom end of the transmission shaft (1101) extends into the fifth delivery pipe (903); a ball valve (1102) connected to the bottom end of the transmission shaft (1101) for conveniently delivering the purified gas to the mounting frame (3); a baffle (1104) connected to the top end of the output pipe (5), with a flow hole formed in the baffle (1104); a rotating disk (1103) rotatably arranged on the output pipe (5), with another flow hole formed in the rotating disk (1103), and the baffle (1104) is located in the lower inner part of the rotating disk (1103); a pulley (1105) connected to the top end of the seventh delivery pipe (1002); and a flat belt (1106) wound between the rotating disk (1103) and the pulley (1105).

6. The tail gas recovery device after hydrofining of lubricating oil according to claim 5, wherein, It further includes a separation component (12) with separation functions. The separation component (12) includes a ninth delivery pipe (1201) rotatably connected to the eighth delivery pipe (1003); a delivery rod (1202) connected to the third mounting plate (401), and the delivery rod (1202) is communicated with the ninth delivery pipe (1201); a first oil-attaching plate (1203), with the number of the first oil-attaching plates (1203) set to three, and the three first oil-attaching plates (1203) are connected inside the delivery rod (1202); a second oil-attaching plate (1204) connected inside the delivery rod (1202), and the second oil-attaching plate (1204) is located above the first oil-attaching plate (1203) for attaching the lubricating oil in the gas; a discharge pipe (1205) connected to the upper part of the mounting frame (3), and the other end of the discharge pipe (1205) is communicated with the third mounting plate (401) and is located below the delivery rod (1202) for discharging the lubricating oil.

7. The tail gas recovery device after hydrofining of lubricating oil according to claim 6, characterized in that, The shunt ball (7) is evenly spaced with shunt holes for dividing the tail gas into multiple airflows.

8. The tail gas recovery device after hydrofining of lubricating oil according to claim 7, characterized in that, The eighth delivery pipe (1003) is connected to the first storage frame (2) in a U shape, and one end of the eighth delivery pipe (1003) is connected to the seventh delivery pipe (1002).

9. The tail gas recovery device after hydrofining of lubricating oil according to claim 8, characterized in that, A contact plate is connected to the lower part of the delivery rod (1202), and the lubricating oil in the reacted gas can fall onto the third mounting plate (401) through the contact plate and be discharged through the discharge pipe (1205).

10. The tail gas recovery device after hydrorefining of lubricating oil according to claim 9, characterized in that, The discharge pipe (1205) is connected to the upper part of the mounting frame (3) in an L shape.

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