Production equipment of regenerated lubricating oil and use method thereof

Abstract

The invention provides regenerated lubricating oil production equipment which comprises a stripping tower, a spraying plate arranged at the top of an inner cavity of the stripping tower, a liquid supply pipeline for supplying oil liquid to the spraying plate, a liquid outlet device externally connected to the bottom wall of the tower, a gas outlet pipe externally connected to the top wall of the tower, and a plurality of circles of gas nozzles which are formed in the inner ring of the side wall of the tower and are vertically distributed at equal intervals, the rotary drum is arranged at the bottom end of the tower side wall, is coaxial with the tower side wall, penetrates through the upper part of a circular ring groove of each air jet hole, is inserted into the circular ring groove, penetrates through each air jet hole and is in sealing fit with the circular ring groove; the plurality of circles of vent holes are formed in the rotary drum and are vertically distributed at equal intervals; and the rotary supporting mechanism is used for supporting and driving the rotary drum to rotate. The invention further provides a use method of the production equipment for the regenerated lubricating oil. According to the invention, oil liquid of regenerated lubricating oil can be subjected to steam stripping deodorization so as to remove odor substances in the oil liquid; and the efficiency and the effect of stripping and deodorizing the oil can be improved.

Description

Technical Field

[0001] This invention relates to a production equipment for recycled lubricating oil and its usage method. Background Technology

[0002] Regenerated lubricating oil is a base oil obtained by processing waste lubricating oil through specific processes. It boasts high recovery rates and environmentally friendly characteristics, making it an important component of resource recycling. During the production of recycled lubricating oil, it is necessary to strip and deodorize the oil to remove odorous substances. Generally, a stripping tower is used for this purpose. The oil is dispersed and sprayed from the top of the stripping tower's inner cavity, while water vapor is ejected from evenly distributed nozzles on the inner ring of the tower's sidewall. This water vapor carries away the odorous substances from the oil. Although multiple vertically distributed nozzles are located on the tower's sidewall, all nozzles spray water vapor towards the tower's axis, and all nozzles on the inner ring of the sidewall simultaneously and continuously eject water vapor. This simultaneous and continuous spraying of water vapor, all directed towards the tower's axis, causes a large amount of the originally dispersed oil to concentrate at the tower's axis. This hinders oil dispersion and reduces the sufficient contact between the water vapor and the oil, affecting the efficiency and effectiveness of the stripping and deodorization process. Summary of the Invention

[0003] To address the shortcomings of existing technologies, this invention provides a production apparatus for regenerated lubricating oil, comprising: a stripping tower having a vertically arranged cylindrical tower sidewall, a conical tower top wall, and an inverted conical tower bottom wall; a spray plate located at the top of the inner cavity of the stripping tower; a liquid supply pipeline supplying oil to the spray plate; a liquid outlet device connected to the bottom wall of the tower; a gas outlet pipe connected to the top wall of the tower; multiple rings of jet nozzles vertically and equally spaced within the inner ring of the tower sidewall (with the inner surface of the tower sidewall as the inner ring and the outer surface of the tower sidewall as the outer ring), a gas supply pipeline supplying water vapor to the inner end of each jet nozzle (the inner end of the jet nozzle is the end of the jet nozzle away from the inner ring of the tower sidewall); and an annular groove (circular groove) located at the bottom end of the tower sidewall, coaxial with the tower sidewall, and penetrating each jet nozzle. The annular groove faces downwards, extending upwards from the bottom of the tower sidewall and penetrating each jet nozzle. The annular groove has two coaxial groove sidewalls: one with a smaller radius is the inner ring of the annular groove, and the other with a larger radius is the outer ring of the annular groove. It is coaxial with the annular groove, inserted into the annular groove at the top, and penetrates each jet nozzle. It can rotate and slide up and down in the annular groove and is sealed with the annular groove. The rotating cylinder is a vertical cylindrical rotating cylinder (with the inner circumference of the rotating cylinder as the inner ring and the outer circumference of the rotating cylinder as the outer ring, the inner ring of the rotating cylinder is sealed with the inner ring of the annular groove, and the outer ring of the rotating cylinder is sealed with the outer ring of the annular groove). Multiple rings of ventilation holes are opened on the rotating cylinder and are vertically and equally spaced (the ventilation holes in the same ring are located at the same height). A rotating support mechanism supports and drives the rotating cylinder to rotate. Each jet nozzle extends radially along the tower sidewall, and jet nozzles in the same ring are evenly distributed circumferentially along the tower sidewall; each vent extends radially along the rotating cylinder, and vents in the same ring are unevenly distributed circumferentially along the rotating cylinder (specifically, in the same ring of vents, the circumferential distance between any two adjacent vents along the inner ring of the rotating cylinder is different for each segment, and there are no two segments with the same circumferential distance). The multiple rings of vent holes and multiple rings of jet nozzles correspond one-to-one in height; the corresponding ring of vent holes and ring of jet nozzles are located at the same height, have the same number (i.e., the number of vent holes in a ring is the same as the number of corresponding jet nozzles in a ring), and have the same inner diameter; each vent hole can sequentially connect with the corresponding ring of jet nozzles during the rotation of the drum, and when a vent hole connects with a certain jet nozzle, the jet nozzle is connected through the connected vent hole (each vent hole is a through hole that connects the inner and outer rings of the drum).

[0004] Preferably, the two adjacent rings of vents are staggered vertically (i.e., any vent in the upper ring is not directly above any vent in the adjacent lower ring, and any vent in the lower ring is not directly below any vent in the adjacent upper ring).

[0005] Preferably, each jet nozzle is evenly distributed on the inner ring of the tower sidewall (specifically, two adjacent rings of jet nozzles, one above the other, correspond one-to-one with the other and are aligned vertically, that is, there is a ventilation hole in the lower ring directly below any jet nozzle in the upper ring, and there is a ventilation hole in the upper ring directly above any jet nozzle in the lower ring).

[0006] Preferably, the liquid outlet device includes: a vertical buffer tank located directly below the stripping tower, with its top wall connected to the bottom wall of the tower via a vertical upper telescopic pipe (the buffer tank, the upper telescopic pipe, and the tower side wall are coaxial; the buffer tank has a vertical cylindrical side wall, a conical top wall, and an inverted conical bottom wall); a vertical liquid outlet pipe located directly below the buffer tank, with its top end connected to the bottom wall of the tank via a vertical lower telescopic pipe (the liquid outlet pipe, the lower telescopic pipe, and the buffer tank are coaxial); a support frame fixedly connected to the outer ring of the tower side wall and the liquid outlet pipe; a lifting frame fixedly connected to the buffer tank and vertically slidably connected to the support frame; and a floating support mechanism supporting the lifting frame to move up and down.

[0007] Preferably, the support frame includes: a horizontal upper support plate fixed to the outer ring of the tower side wall, a horizontal lower support plate fixed to the outer peripheral wall of the liquid outlet pipe, and a column fixed to the side of the upper support plate and the side of the lower support plate. The lifting frame includes: a flat lifting plate fixed to the bottom of the outer ring of the tank side wall (with the inner surface of the tank side wall as the inner ring of the tank side wall and the outer surface of the tank side wall as the outer ring of the tank side wall), and a vertical sliding sleeve fitted on the column and sliding vertically with the column, with the outer ring fixed to the side of the lifting plate. The floating support mechanism includes: a vertical telescopic rod whose bottom end is fixed to the top surface of the lower support plate and whose top end is fixed to the bottom surface of the lifting plate; and a vertical spring fitted around the telescopic rod, whose bottom end is fixed to the top surface of the lower support plate and whose top end is fixed to the bottom surface of the lifting plate.

[0008] Preferably, the inner diameter of the rotating drum is larger than the outer diameter of the upper telescopic tube and the buffer tank, and the bottom end of the rotating drum extends downward to be flush with the top of the tank sidewall (the upper telescopic tube is surrounded by the rotating drum); the rotating support mechanism includes: a flat bearing that rotatably connects the bottom end of the inner ring of the rotating drum to the top end of the outer ring of the tank sidewall (the inner ring of the bearing is fixed to the top end of the outer ring of the tank sidewall, and the outer ring of the bearing is fixed to the bottom end of the inner ring of the rotating drum), a flat toothed ring fixed to the bottom end of the outer ring of the rotating drum (the toothed ring is coaxial with the rotating drum), a gear meshing with the toothed ring, and a motor fixed on the top surface of the lifting frame and driving the gear to rotate.

[0009] Preferably, the liquid supply pipeline includes: an inlet pipe that penetrates the top wall of the tower and is connected to the spray plate; a slide gate valve located on the inlet pipe, outside the stripping tower, and with the valve plate vertically positioned; a vertical valve stem located at the top of the slide gate valve and driving the valve plate to rise and fall to adjust the opening of the slide gate valve; and a connecting frame that fixes the top of the valve stem to the top surface of the lifting plate; the connecting frame includes: a vertical connecting rod whose bottom end is fixed to the top surface of the lifting plate, penetrates the upper support plate, and extends upward to be level with the top of the valve stem (the upper support plate has a vertical through hole for the vertical connecting rod to pass through); and a horizontal connecting rod that fixes the top of the vertical connecting rod to the top of the valve stem.

[0010] Preferably, the gas supply pipeline includes: an air inlet pipe connected to the bottom of the outer ring of the tower sidewall, and an internal gas delivery channel (located on the outer periphery of the rotating drum) opened on the tower sidewall and connecting the inner ends of each jet nozzle to the air inlet pipe.

[0011] This invention also provides a method of using the above-mentioned equipment for producing recycled lubricating oil, including: The regenerated lubricating oil that needs to be deodorized is supplied to the spray plate through the inlet pipe, and the spray plate disperses the oil downwards. The air inlet pipe supplies water vapor to the inner end of each jet nozzle through the air delivery channel. The motor drives the rotating drum to rotate through gears and gear rings. As the rotating drum rotates, the vent holes on the drum can connect with the corresponding jet nozzles in sequence. When a vent hole connects with a certain jet nozzle, the jet nozzle is connected through the connected vent hole. When the vent hole is connected, water vapor can be sprayed radially from the outer end of the jet nozzle along the side wall of the tower. The water vapor sprayed from the vent hole can cross the axis of the side wall of the tower. Multiple vertically spaced jet nozzles spray water vapor into contact with the falling oil. The water vapor carries away the odorous substances in the oil and is discharged through the exhaust pipe (which is then transported to the subsequent water vapor treatment device). The oil with the odorous substances carried away by the water vapor enters the buffer tank through the upper telescopic pipe, then enters the liquid outlet pipe through the lower telescopic pipe, and is discharged through the drain pipe (which is then transported to the subsequent oil treatment device). The drain pipe continuously discharges oil, and the buffer tank maintains a buffer of oil, with the amount of oil in the buffer tank fluctuating dynamically within a certain weight range. When the fluctuation of the amount of oil in the buffer tank becomes heavier, the amount of oil sprayed from the stripping tower and the amount of water vapor sprayed from the stripping tower are reduced; when the fluctuation of the amount of oil in the buffer tank becomes lighter, the amount of oil sprayed from the stripping tower and the amount of water vapor sprayed from the stripping tower are increased. Specifically, when the oil level in the buffer tank fluctuates and becomes heavier, the buffer tank moves downward, the upper telescopic pipe extends and the lower telescopic pipe shortens. The buffer tank also causes the lifting plate and sliding sleeve of the lifting frame to move downward. The downward movement of the lifting plate further compresses the spring and telescopic rod of the floating support mechanism. The lifting plate also causes the motor and gear of the rotating support mechanism to move downward. The buffer tank further causes the bearing of the rotating support mechanism to move downward, and through the bearing, it causes the rotating drum to move downward. The rotating drum then causes the gear ring of the rotating support mechanism to move downward, and the gear ring and gear remain engaged. The downward movement of the rotating drum reduces the vertical opening of the air nozzle when it aligns with the air outlet, thereby reducing the amount of water vapor ejected from the air nozzle. The lifting plate also drives the vertical and horizontal connecting rods of the connecting frame to move downward, and through the horizontal connecting rod, it drives the valve stem of the slide valve to move downward. The downward movement of the valve stem drives the valve plate to reduce the opening of the slide valve, thereby reducing the oil flow rate in the inlet pipe, which in turn reduces the amount of oil sprayed by the spray plate. When the fluctuation in the oil level in the buffer tank becomes less severe, the spring of the floating support mechanism drives the lifting plate and sliding sleeve of the lifting frame to move upward. The lifting plate drives the motor and gear of the rotating support mechanism to move upward, and the lifting plate also drives the buffer tank to move upward. The upper telescopic tube shortens and the lower telescopic tube extends. The buffer tank also drives the bearing of the rotating support mechanism to move upward, and through the bearing, it drives the rotating drum to move upward. The rotating drum drives the gear ring of the rotating support mechanism to move upward, and the gear ring and gear remain meshed. Furthermore, the upward movement of the rotating drum can increase the vertical opening of the air vent when it connects with the air jet, thereby increasing the vertical opening of the air jet and increasing the amount of water vapor ejected from the air jet. The lifting plate also drives the vertical connecting rod and the horizontal connecting rod of the connecting frame to move upward, and through the horizontal connecting rod, it drives the valve stem of the slide valve to move upward. The upward movement of the valve stem can drive the valve plate to increase the opening of the slide valve, thereby increasing the oil flow rate in the inlet pipe, and thus increasing the oil flow rate in the inlet pipe and increasing the amount of oil sprayed by the spray plate.

[0012] The advantages and beneficial effects of this invention are as follows: it provides a production equipment for recycled lubricating oil and a method for using it, which can perform stripping deodorization on the recycled lubricating oil to remove odorous substances from the oil; it can also improve the efficiency and effect of stripping deodorization on the oil.

[0013] The present invention also has the following characteristics: 1) Although this invention also uses jet nozzles evenly distributed on the inner ring of the stripping tower sidewall to spray water vapor, and each jet nozzle sprays water vapor towards the axis of the tower sidewall, this invention opens an annular groove through each jet nozzle on the tower sidewall, and inserts a rotating cylinder with vent holes into the annular groove. The opening and closing of each jet nozzle is controlled by rotating the rotating cylinder. Moreover, the vent holes in the same ring are unevenly distributed along the circumference of the rotating cylinder (specifically, in the same ring of vent holes, the circumferential distance between each two adjacent vent holes along the inner ring of the rotating cylinder is different in each segment, and there are no two segments with the same circumferential distance). This can avoid all jet nozzles on the inner ring of the tower sidewall simultaneously and continuously spraying water vapor towards the axis of the tower sidewall, thereby avoiding or reducing the concentration of the originally dispersed oil at the axis of the tower sidewall. This is more conducive to the contact between water vapor and oil, and will improve the efficiency and effect of oil stripping and deodorization.

[0014] 2) In this invention, the upper and lower rings of vent holes are staggered (i.e., any vent hole in the upper ring is not directly above any vent hole in the adjacent lower ring, and any vent hole in the lower ring is not directly below any vent hole in the adjacent upper ring). This allows for a certain difference in the working state (i.e., the on / off state and on / off time of the vent holes) of the two adjacent rings of vent holes, which in turn causes a certain difference in the steam ejection state (i.e., the steam ejection angle and ejection time) of the two adjacent rings of vent holes. This ensures that the originally dispersed oil is concentrated at the center of the tower side wall. Furthermore, since the water vapor ejected from each vent can pass over the axis of the tower side wall, the difference in the water vapor ejection state of the two adjacent rings of jet nozzles (i.e., the difference in water vapor ejection angle, ejection time, etc.) can more fully or to a greater extent disturb the oil. This is more conducive to the dispersion of the oil, and thus more conducive to the full contact between water vapor and oil, which will further improve the efficiency and effect of oil stripping and deodorization.

[0015] 3) The present invention also provides a buffer tank between the stripping tower and the outlet pipe to ensure the basic stability of the oil output from the outlet pipe, so as to ensure the continuous and stable operation of the subsequent oil treatment device (the oil after stripping and deodorization is transported to the subsequent oil treatment device by the discharge pipe). Specifically, this invention can automatically adjust the oil spray volume in the stripping tower based on fluctuations in the oil buffer volume in the buffer tank, thereby dynamically adjusting the oil buffer volume within a certain weight range. More specifically, this invention automatically adjusts the vertical movement of the connecting frame based on fluctuations in the oil buffer volume in the buffer tank, thereby adjusting the opening of the slide valve, which in turn adjusts the oil flow rate in the inlet pipe, which in turn adjusts the spray volume of the dispersed oil sprayed by the spray plate. This achieves the following: reducing the oil spray volume when the oil buffer volume fluctuation in the buffer tank becomes heavier, and increasing the oil spray volume when the oil buffer volume fluctuation in the buffer tank becomes lighter; ultimately, this ensures that the oil buffer volume in the buffer tank dynamically fluctuates within a certain weight range, thus guaranteeing the basic stability of the oil output from the outlet pipe.

[0016] 4) In addition to automatically adjusting the amount of oil sprayed in the stripping tower, this invention can also automatically adjust the amount of water vapor sprayed in the stripping tower in a corresponding synchronous manner, so that the increase or decrease of the amount of water vapor sprayed is adapted to the increase or decrease of the amount of oil sprayed. Specifically, this invention can automatically adjust the steam injection rate in the stripping tower based on fluctuations in the oil buffer volume in the buffer tank. More specifically, this invention automatically adjusts the vertical movement of the rotating drum based on fluctuations in the oil buffer volume in the buffer tank, thereby adjusting the vertical opening of the jet nozzle when the vent is aligned with the jet nozzle. This adjustment of the vertical opening of the jet nozzle further adjusts the steam injection rate, thus achieving the following: reducing the steam injection rate when the oil buffer volume fluctuation in the buffer tank becomes heavier, and increasing the steam injection rate when the oil buffer volume fluctuation in the buffer tank becomes lighter. Ultimately, the increase or decrease in steam injection rate is adapted to the increase or decrease in oil injection rate, that is, reducing the steam injection rate synchronously when the oil injection rate decreases, and increasing the steam injection rate synchronously when the oil injection rate increases. This ensures a timely and sufficient supply of steam when the oil injection rate increases, and avoids excessive steam supply and waste when the oil injection rate decreases. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the present invention. Detailed Implementation

[0018] The specific embodiments of the present invention will be further described below with reference to the accompanying drawings and examples. The following examples are only used to more clearly illustrate the technical solutions of the present invention and should not be construed as limiting the scope of protection of the present invention.

[0019] The specific technical solution of this invention is as follows: like Figure 1As shown, the present invention provides a production equipment for recycled lubricating oil, comprising: a stripping tower 1 having a vertical cylindrical tower sidewall 11, a conical tower top wall 12, and an inverted conical tower bottom wall 13; a spray plate 21 disposed at the top of the inner cavity of the stripping tower 1; a liquid supply pipeline 2 supplying oil to the spray plate 21; a liquid outlet device 3 externally connected to the tower bottom wall 13; an air outlet pipe 42 externally connected to the tower top wall 12; and an outlet pipe 42 formed in the inner ring of the tower sidewall 11 (with the inner surface of the tower sidewall 11 as the inner surface of the tower sidewall 11). A gas supply pipe 4 is provided at the bottom of the tower sidewall 11, coaxial with the tower sidewall 11, and penetrating through multiple rings of jet nozzles 14 (the outer ring of the tower sidewall 11 is defined as the outer surface of the tower sidewall 11) that are vertically and equally spaced (jet nozzles 14 in the same ring are located at the same height). The pipe 4 supplies water vapor to the inner end of each jet nozzle 14 (the inner end of the jet nozzle 14 is the end of the jet nozzle 14 furthest from the inner ring of the tower sidewall 11, and the outer end of the jet nozzle 14 is the opening end of the jet nozzle 14 on the inner ring of the tower sidewall 11). The annular groove 15 of each jet nozzle 14 (the groove opening of the annular groove 15 faces downward, the annular groove 15 extends upward from the bottom end of the tower sidewall 11 and penetrates each jet nozzle 14, the annular groove 15 has two coaxial groove sidewalls: the groove sidewall with the smaller radius is the inner ring of the annular groove 15, and the groove sidewall with the larger radius is the outer ring of the annular groove 15) is coaxial with the annular groove 15, inserted into the annular groove 15 at the top, penetrates each jet nozzle 14, and can rotate within the annular groove 15. The rotating cylinder 5 is a vertically placed cylindrical rotating cylinder 5 that can slide up and down and is sealed in the annular groove 15 (with the inner circumference of the rotating cylinder 5 as the inner ring of the rotating cylinder 5 and the outer circumference of the rotating cylinder 5 as the outer ring of the rotating cylinder 5, the inner ring of the rotating cylinder 5 is sealed in the annular groove 15 and the outer ring of the rotating cylinder 5 is sealed in the annular groove 15). Multiple rings of vent holes 51 are opened on the rotating cylinder 5 and are vertically and equally distributed (the vent holes 51 in the same ring are located at the same height). A rotating support mechanism 6 supports and drives the rotating cylinder 5 to rotate. Each jet nozzle 14 extends radially along the tower sidewall 11, and is evenly distributed on the inner ring of the tower sidewall 11 (specifically, jet nozzles 14 in the same ring are evenly distributed circumferentially along the tower sidewall 11; for two adjacent rings of jet nozzles 14, the upper ring of jet nozzles 14 corresponds one-to-one with the lower ring of jet nozzles 14 and is vertically aligned, that is, directly below any jet nozzle 14 in the upper ring of vents 51, there is a vent 51 in the lower ring, and the lower ring of vents 51...). Above each jet nozzle 14 is a vent 51 located in the upper ring; each vent 51 extends radially along the rotating cylinder 5, and the vents 51 in the same ring are unevenly distributed along the circumference of the rotating cylinder 5 (specifically, among the vents 51 in the same ring, the circumferential spacing between any two adjacent vents 51 along the inner circumference of the rotating cylinder 5 is different for each segment, and there are no two segments with the same circumferential spacing); the vents 51 in two adjacent rings, one above the other... The upper ring of ventilation holes 51 is staggered vertically with the lower ring of ventilation holes 51 (i.e., any ventilation hole 51 in the upper ring is not directly above any ventilation hole 51 in the adjacent lower ring, and any ventilation hole 51 in the lower ring is not directly below any ventilation hole 51 in the adjacent upper ring); the multiple rings of ventilation holes 51 correspond one-to-one with the multiple rings of jet nozzles 14 in height; the corresponding ring of ventilation holes 51, the ring of... The air vents 14 are located at the same height, have the same number (i.e., the number of vent holes 51 in a ring is the same as the number of corresponding air vents 14 in a ring), and have the same inner diameter. Each vent hole 51 can sequentially connect with the corresponding air vent 14 in a ring during the rotation of the rotating drum 5. When a vent hole 51 connects with a certain air vent 14, that air vent 14 is connected through the connected vent hole 51 (each vent hole 51 is a through hole that connects the inner and outer rings of the rotating drum 5). The liquid outlet device 3 includes: a vertical buffer tank 32 located directly below the stripping tower 1, with its top wall 322 connected to the bottom wall 13 of the tower via a vertical upper telescopic pipe 31 (the buffer tank 32, the upper telescopic pipe 31, and the tower side wall 11 are coaxial; the buffer tank 32 has a vertical cylindrical side wall 321, a conical top wall 322, and an inverted conical bottom wall 323); a vertical liquid outlet pipe 34 located directly below the buffer tank 32, with its top end connected to the bottom wall 323 via a vertical lower telescopic pipe 33 (the liquid outlet pipe 34, the lower telescopic pipe 33, and the buffer tank 32 are coaxial); a support frame 7 fixedly connected to the outer ring of the tower side wall 11 and the liquid outlet pipe 34; a lifting frame 8 fixedly connected to the buffer tank 32 and vertically slidably connected to the support frame 7; and a floating support mechanism 9 supporting the lifting frame 8 to move up and down; the support frame 7 includes: a sleeve fixed to the outer ring of the tower side wall 11. The lifting frame 8 includes: a horizontal upper support plate 71, a horizontal lower support plate 72 fixed to the outer periphery of the liquid outlet pipe 34, and a column 73 fixed to the side of the upper support plate 71 and the side of the lower support plate 72; the lifting frame 8 includes: a horizontal lifting plate 81 fixed to the bottom of the outer ring of the tank side wall 321 (with the inner surface of the tank side wall 321 as the inner ring and the outer surface of the tank side wall 321 as the outer ring); and a vertical sliding sleeve 82 fitted on the column 73 and vertically slidingly engaged with the column 73, with its outer ring fixed to the side of the lifting plate 81; the floating support mechanism 9 includes: a vertical telescopic rod 91 with its bottom end fixed to the top surface of the lower support plate 72 and its top end fixed to the bottom surface of the lifting plate 81; and a vertical spring 92 fitted on the outer periphery of the telescopic rod 91 with its bottom end fixed to the top surface of the lower support plate 72 and its top end fixed to the bottom surface of the lifting plate 81. The inner diameter of the rotating drum 5 is larger than the outer diameter of the upper telescopic tube 31 and the buffer tank 32. The bottom end of the rotating drum 5 extends downward to be flush with the top end of the tank side wall 321 (the upper telescopic tube 31 is surrounded by the rotating drum 5). The rotating support mechanism 6 includes: a flat bearing 61 that rotatably connects the bottom end of the inner ring of the rotating drum 5 to the top end of the outer ring of the tank side wall 321 (the inner ring of the bearing 61 is fixed to the top end of the outer ring of the tank side wall 321, and the outer ring of the bearing 61 is fixed to the bottom end of the inner ring of the rotating drum 5), a flat toothed ring 62 fixed to the bottom end of the outer ring of the rotating drum 5 (the toothed ring 62 is coaxial with the rotating drum 5), a gear 63 that meshes with the toothed ring 62, and a motor 64 fixed on the top surface of the lifting frame 8 and driving the gear 63 to rotate. The liquid supply pipeline 2 includes: an inlet pipe 22 that penetrates the top wall 12 of the tower and is connected to the spray plate 21; a slide valve 23 located on the inlet pipe 22, outside the stripping tower 1, and with the valve plate vertically positioned; a vertical valve stem 24 located at the top of the slide valve 23 and driving the valve plate to rise and fall to adjust the opening of the slide valve 23; and a connecting frame 25 that fixes the top of the valve stem 24 to the top surface of the lifting plate 81. The connecting frame 25 includes: a vertical connecting rod 251 whose bottom end is fixed to the top surface of the lifting plate 81, penetrates the upper support plate 71, and extends upward to be level with the top of the valve stem 24 (the upper support plate 71 has a vertical through hole for the vertical connecting rod 251 to pass through); and a horizontal connecting rod 252 that fixes the top of the vertical connecting rod 251 to the top of the valve stem 24. The gas supply pipeline 4 includes: an air inlet pipe 41 connected to the bottom of the outer ring of the tower side wall 11, and an internal gas delivery channel 16 (located on the outer periphery of the rotating drum 5) opened in the tower side wall 11 and connecting the inner ends of each jet nozzle 14 to the air inlet pipe 41.

[0020] This invention also provides a method of using the above-mentioned equipment for producing recycled lubricating oil, including: The regenerated lubricating oil that needs to be deodorized is supplied to the spray plate 21 through the liquid inlet pipe 22, and the spray plate 21 sprays the oil downwards. The air inlet pipe 41 supplies water vapor to the inner end of each jet nozzle 14 through the air delivery inner channel 16. The motor 64 drives the rotating drum 5 to rotate through the gear 63 and the gear ring 62. The vent hole 51 on the rotating drum 5 can be connected to the corresponding jet nozzle 14 in sequence as the rotating drum 5 rotates. When the vent hole 51 is connected to a certain jet nozzle 14, the jet nozzle 14 is connected through the connected vent hole 51. When the vent hole 51 is connected, water vapor can be sprayed radially from the outer end of the jet nozzle 14 along the tower side wall 11. The water vapor sprayed from the vent hole 51 can pass over the axis of the tower side wall 11. Multiple vertically spaced jet nozzles 14 spray water vapor that comes into contact with the falling oil. The water vapor carries away the odorous substances in the oil and is discharged through the exhaust pipe 42 (which is then transported to the subsequent water vapor treatment device). The oil with the odorous substances carried away by the water vapor enters the buffer tank 32 through the upper telescopic pipe 31, then enters the liquid outlet pipe 34 through the lower telescopic pipe 33, and is discharged through the drain pipe (which is then transported to the subsequent oil treatment device). The drain pipe continuously discharges oil, and the buffer tank 32 maintains a buffer of oil, with the amount of oil in the buffer tank 32 fluctuating dynamically within a certain weight range. When the fluctuation of the amount of oil in the buffer tank 32 becomes heavier, the amount of oil sprayed from the stripping tower 1 and the amount of water vapor sprayed from the stripping tower 1 are reduced. When the fluctuation of the amount of oil in the buffer tank 32 becomes lighter, the amount of oil sprayed from the stripping tower 1 and the amount of water vapor sprayed from the stripping tower 1 are increased. Specifically, when the oil buffer level in the buffer tank 32 fluctuates and becomes heavier, the buffer tank 32 moves downward, the upper telescopic pipe 31 extends and the lower telescopic pipe 33 shortens. The buffer tank 32 also causes the lifting plate 81 and sliding sleeve 82 of the lifting frame 8 to move downward. The downward movement of the lifting plate 81 further compresses the spring 92 and telescopic rod 91 of the floating support mechanism 9. The lifting plate 81 also causes the motor 64 and gear 63 of the rotating support mechanism 6 to move downward. The buffer tank 32 also causes the bearing 61 of the rotating support mechanism 6 to move downward, and through the bearing 61, it causes the rotating drum 5 to move downward. The rotating drum 5 causes the gear ring 62 of the rotating support mechanism 6 to move downward, and the gear ring 62 and gear 63 remain engaged. Furthermore, the downward movement of the rotating drum 5 can reduce the vertical opening of the air vent 51 when it connects with the air vent 14, thereby reducing the vertical opening of the air vent 14 and thus reducing the amount of water vapor ejected from the air vent 14; the lifting plate 81 also drives the vertical connecting rod 251 and the horizontal connecting rod 252 of the connecting frame 25 to move downward, and drives the valve stem 24 of the slide valve 23 to move downward through the horizontal connecting rod 252; the downward movement of the valve stem 24 can drive the valve plate to reduce the opening of the slide valve 23, thereby reducing the opening of the slide valve 23 and thus reducing the oil flow rate of the inlet pipe 22, thereby reducing the amount of oil sprayed by the spray plate 21; When the fluctuation in the oil buffer level in the buffer tank 32 becomes less severe, the spring 92 of the floating support mechanism 9 drives the lifting plate 81 and sliding sleeve 82 of the lifting frame 8 to move upward. The lifting plate 81 drives the motor 64 and gear 63 of the rotating support mechanism 6 to move upward. The lifting plate 81 also drives the buffer tank 32 to move upward, the upper telescopic tube 31 shortens and the lower telescopic tube 33 extends. The buffer tank 32 also drives the bearing 61 of the rotating support mechanism 6 to move upward, and through the bearing 61 drives the rotating drum 5 to move upward. The rotating drum 5 drives the gear ring 62 of the rotating support mechanism 6 to move upward, and the gear ring 62 and gear 63 remain meshed. Furthermore, the upward movement of the rotating drum 5 increases the flow rate. When the air hole 51 is connected to the jet nozzle 14, the vertical opening of the jet nozzle 14 is increased, which in turn increases the amount of water vapor ejected from the jet nozzle 14. The lifting plate 81 also drives the vertical connecting rod 251 and the horizontal connecting rod 252 of the connecting frame 25 to move upward, and drives the valve stem 24 of the slide valve 23 to move upward through the horizontal connecting rod 252. The upward movement of the valve stem 24 can drive the valve plate to increase the opening of the slide valve 23, which in turn increases the oil flow rate of the inlet pipe 22, which in turn increases the amount of oil sprayed by the spray plate 21.

[0021] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A production equipment for recycled lubricating oil, characterized in that, include: A stripping tower includes a spray plate at the top of its inner cavity, a liquid supply pipeline that supplies oil to the spray plate, a liquid outlet device connected to the bottom wall of the tower, an air outlet pipe connected to the top wall of the tower, multiple rings of air jets evenly spaced vertically on the inner ring of the tower side wall, a gas supply pipeline that supplies water vapor to the inner end of each air jet, a rotating cylinder inserted into the annular groove at the bottom of the tower side wall, coaxial with the tower side wall, and passing through each air jet, and sealed to the annular groove, multiple rings of vent holes evenly spaced vertically on the rotating cylinder, and a rotating support mechanism that supports and drives the rotating cylinder to rotate. Each jet nozzle extends radially along the side wall of the tower, and the jet nozzles in the same ring are evenly distributed circumferentially along the side wall of the tower; each vent extends radially along the rotating cylinder, and the vents in the same ring are unevenly distributed circumferentially along the rotating cylinder. The multiple vent holes and multiple jet nozzles correspond one-to-one in height; the corresponding vent holes and jet nozzles are located at the same height and have the same number; each vent hole can sequentially connect with the corresponding jet nozzle during the rotation of the drum, and when a vent hole connects with a certain jet nozzle, the jet nozzle is connected through the vent hole.

2. The equipment for producing recycled lubricating oil according to claim 1, characterized in that, There are two adjacent rings of vents, with the upper ring of vents being staggered from the lower ring.

3. The equipment for producing recycled lubricating oil according to claim 2, characterized in that, Each jet nozzle is evenly distributed on the inner ring of the tower side wall.

4. The equipment for producing recycled lubricating oil according to claim 3, characterized in that, The liquid discharge device includes: a buffer tank located directly below the stripping tower, with its top wall connected to the bottom wall of the tower via an upper telescopic pipe; a liquid discharge pipe located directly below the buffer tank, with its top end connected to the bottom wall of the tank via a lower telescopic pipe; a support frame fixedly connected to the outer ring of the tower side wall and the liquid discharge pipe; a lifting frame fixedly connected to the buffer tank and vertically slidably connected to the support frame; and a floating support mechanism supporting the lifting frame to move up and down.

5. The equipment for producing recycled lubricating oil according to claim 4, characterized in that, The support frame includes: an upper support plate fixed to the outer ring of the tower side wall, a lower support plate fixed to the outer peripheral wall of the liquid outlet pipe, and a column fixed to the side of the upper support plate and the side of the lower support plate. The lifting frame includes: a lifting plate fixed to the bottom of the outer ring of the tank side wall, and a sliding sleeve fitted on the column and slidingly engaged with the column vertically, with the outer ring fixed to the side of the lifting plate. The floating support mechanism includes: a vertical telescopic rod whose bottom end is fixed to the top surface of the lower support plate and whose top end is fixed to the bottom surface of the lifting plate; and a vertical spring fitted around the telescopic rod, whose bottom end is fixed to the top surface of the lower support plate and whose top end is fixed to the bottom surface of the lifting plate.

6. The equipment for producing recycled lubricating oil according to claim 5, characterized in that, The inner diameter of the rotating drum is larger than the outer diameter of the upper telescopic tube and the buffer tank, and the bottom end of the rotating drum extends downward to be flush with the top of the tank side wall; the rotating support mechanism includes: a bearing that rotatably connects the bottom end of the inner ring of the rotating drum to the top end of the outer ring of the tank side wall, a toothed ring fixed to the bottom end of the outer ring of the rotating drum, a gear meshing with the toothed ring, and a motor fixed to the top surface of the lifting frame and driving the gear to rotate.

7. The equipment for producing recycled lubricating oil according to claim 6, characterized in that, The liquid supply pipeline includes: an inlet pipe that penetrates the top wall of the tower and is connected to the spray plate; a slide gate valve located on the inlet pipe, outside the stripping tower, and with the valve plate vertically positioned; a vertical valve stem located at the top of the slide gate valve and driving the valve plate to rise and fall to adjust the opening of the slide gate valve; and a connecting frame that fixes the top of the valve stem to the top surface of the lifting plate. The connecting frame includes: a vertical connecting rod whose bottom end is fixed to the top surface of the lifting plate, penetrates the upper support plate, and extends upward to be level with the top of the valve stem; and a horizontal connecting rod that fixes the top of the vertical connecting rod to the top of the valve stem.

8. The equipment for producing recycled lubricating oil according to claim 7, characterized in that, The gas supply pipeline includes: an air inlet pipe connected to the outer ring of the tower side wall, and an internal gas delivery channel opened in the tower side wall to connect the inner end of each jet nozzle to the air inlet pipe.

9. The method of using the equipment for producing recycled lubricating oil as described in claim 8, characterized in that, include: The spray plate is supplied with recycled lubricating oil that requires deodorization, and the spray plate disperses the oil downwards. Water vapor is supplied to the inner end of each jet nozzle. The motor drives the rotating drum to rotate through gears and a gear ring. The vent holes on the rotating drum can be connected to the corresponding jet nozzles in sequence as the drum rotates. When a vent hole is connected to a certain jet nozzle, the jet nozzle is connected through the connected vent hole. When the vent hole is connected, water vapor can be sprayed radially along the side wall of the tower. The water vapor sprayed from the vent hole can cross the axis of the side wall of the tower. Multiple jet nozzles spray water vapor that comes into contact with the falling oil. The water vapor carries away the odorous substances in the oil and is discharged through the exhaust pipe.

10. The method of using the equipment for producing recycled lubricating oil according to claim 9, characterized in that, include: The regenerated lubricating oil required for deodorization is supplied to the spray plate through the inlet pipe; The intake pipe supplies water vapor to the inner end of each jet nozzle through the internal air supply channel; The oil, whose odorous substances are carried away by water vapor, enters the buffer tank through the upper telescopic pipe, then enters the outlet pipe through the lower telescopic pipe, and is discharged through the drain pipe. The drain pipe continuously discharges oil, and the buffer tank maintains a buffer of oil, with the amount of oil in the buffer tank fluctuating dynamically within a certain weight range. When the fluctuation of the amount of oil in the buffer tank becomes heavier, the amount of oil sprayed from the stripping tower and the amount of water vapor sprayed from the stripping tower are reduced; when the fluctuation of the amount of oil in the buffer tank becomes lighter, the amount of oil sprayed from the stripping tower and the amount of water vapor sprayed from the stripping tower are increased. Specifically, when the oil level in the buffer tank fluctuates and becomes heavier, the buffer tank moves downward, the upper telescopic tube extends and the lower telescopic tube shortens, and the buffer tank drives the lifting plate to move downward to compress the spring. The lifting plate also drives the motor and gear to move downward. The buffer tank also drives the rotating drum to move downward through the bearing, and the rotating drum drives the gear ring to move downward. The gear ring and gear remain meshed. Furthermore, the downward movement of the rotating drum can reduce the vertical opening of the air nozzle when the vent hole connects with the air nozzle, thereby reducing the amount of water vapor ejected from the air nozzle. The lifting plate also drives the valve stem to move downward through the vertical connecting rod and the horizontal connecting rod. The downward movement of the valve stem can drive the valve plate to reduce the opening of the slide valve, thereby reducing the oil flow rate in the inlet pipe, and thus reducing the amount of oil ejected from the spray plate. When the fluctuation in the oil level in the buffer tank becomes less, the spring drives the lifting plate to move upward. The lifting plate then drives the motor and gears to move upward, and the lifting plate also drives the buffer tank to move upward. The upper telescopic tube shortens and the lower telescopic tube extends. The buffer tank also drives the rotating drum to move upward through the bearing. The rotating drum drives the gear ring to move upward, and the gear ring and gear remain engaged. Furthermore, the upward movement of the rotating drum can increase the vertical opening of the air nozzle when the vent is connected to the air nozzle, thereby increasing the amount of water vapor ejected from the air nozzle. The lifting plate also drives the valve stem of the slide valve to move upward through the vertical connecting rod and the horizontal connecting rod. Moving the valve stem upwards can drive the valve plate to increase the opening of the slide gate valve, which in turn increases the oil flow rate in the inlet pipe, and consequently increases the oil spray volume from the spray plate.

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