Petrochemical engineering oil-water separation system and process

Abstract

The invention discloses a petrochemical engineering oil-water separation system, and belongs to the technical field of oil-water separation. A petrochemical engineering oil-water separation system comprises a separation pool, an annular plate is arranged in the separation pool, a standing separation cavity used for oil-water separation is formed between the outer wall of the annular plate and the inner wall of the separation pool, a plurality of partition plates are circumferentially and evenly arranged between the outer wall of the annular plate and the inner wall of the separation pool, and the standing separation cavity is divided into a plurality of storage tanks by the partition plates; a rotary lifting part is arranged in the annular plate, a rotary joint is fixedly arranged at the top of the rotary lifting part, a material guide pipe is movably connected to the top of the rotary joint, and a mounting frame is arranged on the outer side of the rotary joint; according to the oil-water separation device, oil-water mixed liquid is sequentially guided into the different storage tanks through the guide pipes, the oil-water mixture in the previous storage tank cannot be disturbed by the next storage tank for discharging the oil-water mixture, an additive and the oil-water mixed liquid are fully mixed, the oil-water mixed liquid is rapidly stood and layered, and the oil-water separation efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of oil-water separation, and in particular to a petrochemical oil-water separation system and process. Background Art

[0002] Oil-water separation is mainly based on the density difference or chemical properties of water and oil, using the principle of gravity sedimentation or other physical and chemical reactions to remove impurities or complete the separation of oil and water. The wastewater produced by petrochemicals usually contains a large amount of oil. The discharge of these wastewaters will pollute the environment, and the oily wastewater will often be separated from the oil before being discharged.

[0003] In the existing sedimentation-type oil-water separation tank, after receiving the refined oil-liquid mixture, a filtering device will be used to filter out the impurities in the oil and water, and the treated oil and water will then enter the tank for further treatment. The filtering structure used in this link is mostly an ordinary filter mesh, and the remaining oil and water in the filter residue impurities filtered at the top of the treatment tank will be cleaned and discharged together with the filter mesh, causing waste; in the continuous operation process, since oil and water are continuously discharged into the separation tank, waves are generated on the surface of the separation tank, which can easily cause the oil-water mixture to stand for a long time, thereby reducing the oil-water separation efficiency. Summary of the invention

[0004] The purpose of the present invention is to solve the problems existing in the prior art and to propose a petrochemical oil-water separation system.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: A petrochemical oil-water separation system comprises a separation tank, wherein an annular plate is arranged in the separation tank, a static separation chamber for oil-water separation is formed between the outer wall of the annular plate and the inner wall of the separation tank, a plurality of partitions are evenly arranged in a circle between the outer wall of the annular plate and the inner wall of the separation tank, and the plurality of partitions divide the static separation chamber into a plurality of storage tanks, a rotating lifting member is arranged in the annular plate, a rotating joint is fixedly arranged on the top of the rotating lifting member, a material guide pipe is movably connected to the top of the rotating joint, a mounting frame is arranged on the outside of the rotating joint, a filtering assembly and an additive discharge assembly are arranged on the mounting frame, a discharge pipe facing the filtering assembly is arranged on the rotating joint, a stirring assembly for stirring the additive is also arranged on the end of the mounting frame away from the rotating lifting member, and the stirring assembly is connected to the filtering assembly.

[0006] Preferably, the rotary lifting member comprises a hydraulic cylinder disposed in the annular plate and fixedly connected to the inner wall of the separation tank, the piston rod of the hydraulic cylinder is connected to a support, a rotary motor is disposed on the support, and the output shaft of the rotary motor is connected to a rotary joint.

[0007] Preferably, the filtering assembly includes a support plate fixed on a mounting frame, a first reel is provided on the support plate, a second reel is provided on the mounting frame, a filter cloth is wound around the second reel, an end of the filter cloth away from the second reel is connected to the first reel, a driving motor for driving the second reel to rotate is provided on the mounting frame, a synchronous wheel is provided between the second reel and the first reel, and a synchronous belt is provided between the two synchronous wheels.

[0008] Preferably, a connecting plate is fixedly provided on the support plate, an elastic telescopic plate is fixedly provided on the connecting plate, a pressure roller is rotatably connected to the elastic telescopic plate via a pin shaft, and the pressure roller movably contacts the filter cloth on the first winding rod.

[0009] Preferably, a pressure rod is fixedly provided on the support plate, and the pressure rod is movably opposed to the filter cloth between the first rolling rod and the second rolling rod.

[0010] Preferably, the stirring assembly includes a rotating tube rotatably connected to the mounting frame, the rotating tube is provided with a plurality of stirring blades equidistantly arranged along its axial direction, the rotating tube is provided with a driven bevel gear, and the second winding rod is provided with an active bevel gear meshing with the driven bevel gear.

[0011] Preferably, the additive discharge assembly includes a material box and a working shell fixed on a mounting frame, a liquid inlet valve is arranged between the material box and the working shell, a piston block is slidably connected in the working shell, a moving rod is fixed on the piston block, a first connecting plate is fixed on the first winding rod, a second connecting plate is movably connected between the first connecting plate and the moving rod, a liquid outlet valve is arranged on the working shell, the working shell is connected to a liquid guide tube via the liquid outlet valve, and an end of the liquid guide tube away from the working shell passes through the mounting frame and is rotatably connected to the bottom of the rotating tube.

[0012] Preferably, the rotating tube is provided with a plurality of discharge holes along its axial direction, and a self-weight floating plate for covering the discharge holes is slidably connected to the outer side of the rotating tube.

[0013] Preferably, a sealing slide plate corresponding to a plurality of material storage tanks is slidably connected to the separation tank, an oil drain valve is provided on each of the sealing slide plates, and a drain valve corresponding to a plurality of material storage tanks is provided at the bottom of the separation tank.

[0014] The present invention also discloses a petrochemical oil-water separation process, which is processed by applying a petrochemical oil-water separation system, and includes the following steps: S1: Introduce the oil-water mixture into the separation tank through the guide pipe, and the oil-water mixture enters the storage tank through the rotating joint, the discharge pipe and the filter cloth; S2: Control the driving motor in the mounting frame to operate. When the driving motor is in operation, it drives the second reel to rotate. The first reel rotates with the second reel under the action of the synchronous wheel and the synchronous belt. The second reel releases the filter cloth, and the first reel reels the filter cloth, so that the filter cloth always filters the filter residue in the oil-water mixture in a clean state. The filter residue is reeled up with the filter cloth. When the first reel reels the filter cloth, the pressure roller presses the filter cloth, so that the oil-water mixture contained in the filter cloth and the filter residue is squeezed out, and the squeezed oil-water mixture falls into the storage tank; S3: When the first winding rod rotates, it drives the first connecting plate to rotate. The first connecting plate drives the moving rod to move back and forth through the second connecting plate, so that the piston block moves back and forth in the working shell. The working shell extracts the additive in the material box and discharges it into the rotating tube through the liquid guide pipe. The additive is discharged into the oil-water mixture in the storage tank through the discharge hole; S4: When the second reel rotates, the driving bevel gear meshes with the driven bevel gear on the rotating tube, and the rotating tube drives the stirring blade to rotate, so that the additive and the oil-water mixture are fully mixed; S5: As the liquid level of the oil-water mixture in the storage tank rises, the self-weight floating plate moves upward under the action of buoyancy, causing more discharge holes at the rotating tube to leak out, and the additives are discharged from multiple discharge holes at the same time; S6: After the oil-water mixture in the storage tank reaches a predetermined height, the hydraulic cylinder drives the mounting frame upward through the rotating joint, so that the stirring assembly moves out of the storage tank, and the self-weight floating plate slides down and resets under the action of its own gravity, and then the rotating motor drives the rotating joint to rotate the angle, so that the stirring assembly is placed on the upper side of the next storage tank to be discharged, and the hydraulic cylinder drives the stirring assembly downward through the rotating joint, so that the stirring assembly is placed in the storage tank, and the oil-water mixture is continuously discharged to the second storage tank through the guide pipe. The continuously discharged oil-water mixture will not disturb the oil-water mixture in the previous storage tank, and the oil-water mixture in the previous storage tank is allowed to stand and stratify; S7: Repeat S2-S6 to discharge the oil-water mixture into multiple storage tanks in turn. Before that, the additives are mixed with the oil-water mixture after stirring, and then allowed to stand and quickly separate into layers. The staff moves the sealing slide to move the oil discharge valve to the height of the oil-water separation layer, discharges the oil through the oil discharge valve, and then discharges the water through the water drain valve.

[0015] Compared with the prior art, the present invention provides a petrochemical oil-water separation system and process, which has the following beneficial effects: 1. The petrochemical oil-water separation system and process guides the oil-water mixture into different storage tanks in sequence through a guide pipe. The latter storage tank that discharges the oil-water mixture will not disturb the oil-water mixture in the previous storage tank, so that the oil-water mixture can be quickly stratified and the oil-water separation efficiency is improved.

[0016] 2. The petrochemical oil-water separation system and process is characterized in that the first reel rotates with the second reel under the action of the synchronous wheel and the synchronous belt, the second reel releases the filter cloth, and the first reel reels the filter cloth, so that the filter cloth always filters the filter residue in the oil-water mixture in a clean state to ensure the filtering performance of the filter cloth, the filter residue is reeled with the filter cloth, and when the first reel reels the filter cloth, the pressure roller presses the filter cloth to squeeze out the oil-water mixture contained in the filter cloth and the filter residue, and the squeezed oil-water mixture falls into the storage tank, so that the oil and water are collected to the maximum extent to avoid waste.

[0017] 3. The petrochemical oil-water separation system and process, when the first reel rotates, drives the first connecting plate to rotate, and the first connecting plate drives the moving rod to move back and forth through the second connecting plate, so that the piston block moves back and forth in the working shell, the working shell extracts the additive in the material box and discharges it into the rotating tube through the liquid guide tube, and the additive is discharged into the oil-water mixture in the storage tank through the discharge hole, and when the second reel rotates, the active bevel gear and the driven bevel gear on the rotating tube are meshed and driven, and the rotating tube drives the stirring blade to rotate, so that the additive and the oil-water mixture are fully mixed, the oil and water stratification speed is accelerated, and the oil-water separation efficiency is improved.

[0018] 4. The petrochemical oil-water separation system and process blocks the discharge hole by arranging a self-weight floating plate on the outside of the rotating tube. As the liquid level of the oil-water mixture in the storage tank rises, the self-weight floating plate moves upward under the action of buoyancy, so that more discharge holes at the rotating tube leak out, and additives are discharged from multiple discharge holes at the same time, avoiding that most of the additives discharged from the discharge holes fall on the upper side of the oil-water mixture, ensuring that the additives are quickly and evenly mixed with the oil-water mixture under the action of the stirring component, thereby improving the oil-water separation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 It is a schematic diagram of the cross-sectional structure of the present invention; Figure 3 It is a schematic cross-sectional structure diagram of the rotary lifting member of the present invention; Figure 4 It is a schematic diagram of the external structure of the mounting frame of the present invention; Figure 5 For the present invention Figure 4 A partial enlarged structural diagram of the middle part; Figure 6 It is a schematic diagram of the cross-sectional structure of the working shell of the present invention; Figure 7 It is a schematic diagram of the external structure of the rotating tube of the present invention; Figure 8 It is a partial cross-sectional structural schematic diagram of the separation tank of the present invention.

[0020] In the figure: 1, separation tank; 2, annular plate; 3, partition; 4, storage tank; 5, rotating lifting member; 501, hydraulic cylinder; 502, support; 503, rotating motor; 6, rotating joint; 601, discharge pipe; 7, guide pipe; 8, mounting frame; 9, support plate; 901, first reel; 9011, first connecting plate; 9012, second connecting plate; 902, second reel; 9021, active bevel gear; 903, Synchronous wheel; 10, filter cloth; 11, connecting plate; 111, elastic expansion plate; 112, pressure roller; 12, pressure rod; 13, rotating tube; 131, stirring blade; 132, driven bevel gear; 133, discharge hole; 134, self-weight floating plate; 14, material box; 15, working shell; 151, piston block; 152, moving rod; 153, liquid guide tube; 16, sealing slide plate; 161, oil discharge valve; 17, water discharge valve. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention; it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making creative work are within the scope of protection of the present invention.

[0022] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0023] In the description of the present invention, it should be noted that, unless otherwise clearly stipulated and limited, the terms "installed", "provided with", "mounted / connected", "connected", etc. should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two components; for ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] Example: Refer to Figure 1 , Figure 2 and Figure 4A petrochemical oil-water separation system comprises a separation tank 1, wherein an annular plate 2 is arranged in the separation tank 1, a static separation chamber for oil-water separation is formed between the outer wall of the annular plate 2 and the inner wall of the separation tank 1, a plurality of partitions 3 are evenly arranged circumferentially between the outer wall of the annular plate 2 and the inner wall of the separation tank 1, the plurality of partitions 3 divide the static separation chamber into a plurality of storage tanks 4, a rotating lifting member 5 is arranged in the annular plate 2, a rotating joint 6 is fixedly arranged on the top of the rotating lifting member 5, a material guide pipe 7 is movably connected to the top of the rotating joint 6, a mounting frame 8 is arranged on the outer side of the rotating joint 6, a filtering component and an additive discharge component are arranged on the mounting frame 8, a discharge pipe 601 facing the filtering component is arranged on the rotating joint 6, a stirring component for stirring the additive is also arranged on the end of the mounting frame 8 away from the rotating lifting member 5, and the stirring component is connected to the filtering component.

[0025] Specifically, the oil-water mixture is introduced into the separation tank 1 through the guide pipe 7. When one of the storage tanks 4 is discharged, the filtering component and the additive discharge component are activated to filter the filter residue in the oil-water mixture while adding the additive into the storage tank 4. The stirring component stirs the added additive to make the additive and the oil-water mixture evenly mixed, thereby accelerating the stratification of oil and water. After the discharge of one of the storage tanks 4 is completed, the rotating lifting member 5 drives the stirring component to move upward, and then the discharge pipe 601 rotates to another storage tank 4 to discharge the oil-water mixture. The oil-water mixture is introduced into different storage tanks 4 in turn through the guide pipe 7. The latter storage tank 4 that discharges the oil-water mixture will not disturb the oil-water mixture in the previous storage tank 4, so that the oil-water mixture quickly stands and stratifies, thereby improving the oil-water separation efficiency.

[0026] Reference Figure 1 , Figure 2 and Figure 3 As a preferred technical solution of the present invention, the rotary lifting member 5 includes a hydraulic cylinder 501 arranged in the annular plate 2 and fixedly connected to the inner wall of the separation tank 1, the piston rod of the hydraulic cylinder 501 is connected to a support 502, a rotary motor 503 is arranged on the support 502, and the output shaft of the rotary motor 503 is connected to the rotary joint 6; specifically, after the discharge of one of the storage tanks 4 is completed, the hydraulic cylinder 501 drives the stirring assembly to move upward to avoid the stirring assembly being placed in the storage tank 4 and affecting the subsequent rotation, and then the rotary motor 503 drives the rotary joint 6 to rotate the angle so that the stirring assembly is placed on the upper side of the next storage tank 4 to be discharged, and the hydraulic cylinder 501 drives the stirring assembly to move downward through the rotary joint 6 so that the stirring assembly is placed in the storage tank 4 for subsequent stirring work.

[0027] Reference Figure 1 , Figure 2 , Figure 4 and Figure 5As a preferred technical solution of the present invention, the filter assembly includes a support plate 9 fixed on the mounting frame 8, a first rolling rod 901 is arranged on the support plate 9, a second rolling rod 902 is arranged on the mounting frame 8, a filter cloth 10 is wound and connected on the second rolling rod 902, and the end of the filter cloth 10 away from the second rolling rod 902 is connected to the first rolling rod 901, a driving motor for driving the second rolling rod 902 to rotate is arranged on the mounting frame 8, and a synchronous wheel 903 is arranged between the second rolling rod 902 and the first rolling rod 901, and the two synchronous wheels 903 is provided with a synchronous belt; specifically, the driving motor in the control mounting frame 8 is operated, and when the driving motor is operated, the second reel 902 is driven to rotate, and the first reel 901 rotates with the second reel 902 under the action of the synchronous wheel 903 and the synchronous belt, the second reel 902 releases the filter cloth 10, and the first reel 901 reels the filter cloth 10, and the filter residue is reeled with the filter cloth 10, so that the filter cloth 10 always filters the filter residue in the oil-water mixture in a clean state, thereby ensuring the long-term and effective filtering function of the filter cloth 10.

[0028] Reference Figure 1 , Figure 2 , Figure 4 and Figure 5 As a preferred technical solution of the present invention, a connecting plate 11 is fixedly provided on the support plate 9, and an elastic telescopic plate 111 is fixedly provided on the connecting plate 11. A pressure roller 112 is rotatably connected to the elastic telescopic plate 111 through a pin shaft, and the pressure roller 112 and the filter cloth 10 on the first reel 901 are movably opposed to each other; specifically, when the first reel 901 reels the filter cloth 10, the filter residue is reeled along with the filter cloth 10, and the pressure roller 112 presses the filter cloth 10 to squeeze out the filter cloth 10 and the oil-water mixture contained in the filter residue, and the squeezed oil-water mixture falls into the storage tank 4, so that the oil and water are collected to the maximum extent to avoid waste; and the pressure roller 112 is elastically arranged to make the elastic telescopic plate 111 automatically shrink as the filter cloth 10 outside the first reel 901 is wound and collected.

[0029] Reference Figure 1 , Figure 2 and Figure 4 As a preferred technical solution of the present invention, a pressure rod 12 is also fixed on the support plate 9, and the pressure rod 12 and the filter cloth 10 between the first reel 901 and the second reel 902 are movably opposed to each other; specifically, the filter cloth 10 between the first reel 901 and the second reel 902 is pressed down by the pressure rod 12, and the pressing position is placed on the middle side of the filter cloth 10, so that the filter cloth 10 is low in the middle and high on both sides, thereby effectively preventing the oil-water mixture discharged from the discharge pipe 601 from falling directly from both sides of the filter cloth 10 without being filtered, thereby ensuring the filtering effect of the filter residue in the oil-water mixture.

[0030] Reference Figure 1 , Figure 2 , Figure 4 and Figure 7As a preferred technical solution of the present invention, the stirring assembly includes a rotating tube 13 rotatably connected to the mounting frame 8, the rotating tube 13 is provided with a plurality of stirring blades 131 equidistantly arranged along its axial direction, a driven bevel gear 132 is arranged on the rotating tube 13, and an active bevel gear 9021 meshing with the driven bevel gear 132 is arranged on the second winding rod 902; specifically, when the second winding rod 902 rotates, the active bevel gear 9021 is meshed with the driven bevel gear 132 on the rotating tube 13, and the rotating tube 13 drives the stirring blades 131 to rotate, so that the additives in the storage tank 4 are fully mixed with the oil-water mixture.

[0031] Reference Figure 1 , Figure 2 , Figure 4 , Figure 6 and Figure 7 As a preferred technical solution of the present invention, the additive discharge assembly includes a material box 14 and a working shell 15 fixedly mounted on the mounting frame 8, a liquid inlet valve is arranged between the material box 14 and the working shell 15, a piston block 151 is slidably connected in the working shell 15, a moving rod 152 is fixedly arranged on the piston block 151, a first connecting plate 9011 is fixedly arranged on the first rolling rod 901, a second connecting plate 9012 is movably connected between the first connecting plate 9011 and the moving rod 152, a liquid outlet valve is arranged on the working shell 15, and the working shell 15 is connected to a liquid guide tube 153 through the liquid outlet valve, and an end of the liquid guide tube 153 away from the working shell 15 passes through the mounting frame 8 and is rotatably connected to the bottom of the rotating tube 13.

[0032] Furthermore, the rotating tube 13 is provided with a plurality of discharge holes 133 along its axial direction, and a self-weight floating plate 134 for covering the discharge holes 133 is slidably connected to the outer side of the rotating tube 13 .

[0033] Specifically, when the first winding rod 901 rotates, it drives the first connecting plate 9011 to rotate, and the first connecting plate 9011 drives the moving rod 152 to reciprocate through the second connecting plate 9012, so that the piston block 151 moves back and forth in the working shell 15, and the working shell 15 extracts the additive in the material box 14 and discharges it into the rotating tube 13 through the liquid guide tube 153, and the additive is discharged into the oil-water mixture in the storage tank 4 through the discharge hole 133. As the liquid level of the oil-water mixture in the storage tank 4 rises, the self-weight floating plate 134 moves upward under the action of buoyancy, so that more discharge holes 133 at the rotating tube 13 leak out, and the additive is discharged from multiple discharge holes 133 at the same time, so as to avoid that most of the additive discharged from the discharge hole 133 falls on the upper side of the oil-water mixture, so as to ensure that the additive is quickly and evenly mixed with the oil-water mixture under the action of the stirring component, thereby improving the oil-water separation efficiency.

[0034] Reference Figure 1 and Figure 8As a preferred technical solution of the present invention, a sealing slide plate 16 corresponding to a plurality of material storage tanks 4 is slidably connected to the separation tank 1, and an oil discharge valve 161 is provided on each sealing slide plate 16. A drainage valve 17 corresponding to a plurality of material storage tanks 4 is provided at the bottom of the separation tank 1. Specifically, since the mixing ratio of the oil-water mixture in each material storage tank 4 is different, the height of the oil-water stratification line in each material storage tank 4 is different. The staff moves the sealing slide plate 16 to move the oil discharge valve 161 to the height of the oil-water separation layer, discharges the oil through the oil discharge valve 161, and then discharges the water through the drainage valve 17.

[0035] The present invention also discloses a petrochemical oil-water separation process, which is processed by applying a petrochemical oil-water separation system, and includes the following steps: S1: The oil-water mixture is introduced into the separation tank 1 through the guide pipe 7, and the oil-water mixture enters the storage tank 4 through the rotary joint 6, the discharge pipe 601, and the filter cloth 10; S2: Control the driving motor in the mounting frame 8 to operate. When the driving motor operates, the second reel 902 is driven to rotate. The first reel 901 rotates with the second reel 902 under the action of the synchronous wheel 903 and the synchronous belt. The second reel 902 releases the filter cloth 10, and the first reel 901 reels the filter cloth 10, so that the filter cloth 10 always filters the filter residue in the oil-water mixture in a clean state. The filter residue is reeled with the filter cloth 10. When the first reel 901 reels the filter cloth 10, the pressure roller 112 presses the filter cloth 10, so that the filter cloth 10 and the oil-water mixture contained in the filter residue are squeezed out, and the squeezed oil-water mixture falls into the storage tank 4; S3: When the first rolling rod 901 rotates, it drives the first connecting plate 9011 to rotate. The first connecting plate 9011 drives the moving rod 152 to reciprocate through the second connecting plate 9012, so that the piston block 151 reciprocates in the working shell 15. The working shell 15 extracts the additive in the material box 14 and discharges it into the rotating tube 13 through the liquid guide tube 153. The additive is discharged into the oil-water mixture in the storage tank 4 through the discharge hole 133; S4: When the second rolling rod 902 rotates, the driving bevel gear 9021 engages with the driven bevel gear 132 on the rotating tube 13 to drive the stirring blade 131 to rotate, so that the additive and the oil-water mixture are fully mixed; S5: As the liquid level of the oil-water mixture in the storage tank 4 rises, the self-weight floating plate 134 moves upward under the action of buoyancy, causing more discharge holes 133 at the rotating tube 13 to leak out, and the additives are discharged from multiple discharge holes 133 at the same time; S6: After the oil-water mixture in the storage tank 4 reaches a predetermined height, the hydraulic cylinder 501 drives the mounting frame 8 to move upward through the rotating joint 6, so that the stirring assembly moves out of the storage tank 4, and the self-weight floating plate 134 slides down and resets under the action of its own gravity, and then the rotating motor 503 drives the rotating joint 6 to rotate an angle, so that the stirring assembly is placed on the upper side of the next storage tank 4 to be discharged, and the hydraulic cylinder 501 drives the stirring assembly to move downward through the rotating joint 6, so that the stirring assembly is placed in the storage tank 4, and the oil-water mixture is continuously discharged to the second storage tank 4 through the guide pipe 7. The continuously discharged oil-water mixture will not disturb the oil-water mixture in the previous storage tank 4, and the oil-water mixture in the previous storage tank 4 is allowed to stand and stratify; S7: Repeat S2-S6 to discharge the oil-water mixture into multiple storage tanks 4 in sequence. Before that, the additive is mixed with the oil-water mixture after stirring and then allowed to stand and quickly stratify. The staff moves the sealing slide 16 to move the oil drain valve 161 to the height of the oil-water separation layer, discharges the oil through the oil drain valve 161, and then discharges the water through the drain valve 17.

[0036] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A petrochemical oil-water separation system, comprising a separation tank (1), characterized in that: An annular plate (2) is arranged in the separation tank (1), a static separation chamber for oil-water separation is formed between the outer wall of the annular plate (2) and the inner wall of the separation tank (1), a plurality of partitions (3) are evenly arranged in a circumference between the outer wall of the annular plate (2) and the inner wall of the separation tank (1), the plurality of partitions (3) divide the static separation chamber into a plurality of storage tanks (4), a rotary lifting member (5) is arranged in the annular plate (2), a rotary joint (6) is fixedly arranged on the top of the rotary lifting member (5), a material guide pipe (7) is movably connected to the top of the rotary joint (6), a mounting frame (8) is arranged outside the rotary joint (6), a filtering assembly and an additive discharge assembly are arranged on the mounting frame (8), a discharge pipe (601) facing the filtering assembly is arranged on the rotary joint (6), and a stirring assembly for stirring the additive is also arranged at one end of the mounting frame (8) away from the rotary lifting member (5), the stirring assembly is connected to the filtering assembly.

2. A petrochemical oil-water separation system according to claim 1, characterized in that: The rotary lifting member (5) comprises a hydraulic cylinder (501) which is arranged in the annular plate (2) and fixedly connected to the inner wall of the separation tank (1); the piston rod of the hydraulic cylinder (501) is connected to a support (502); a rotary motor (503) is arranged on the support (502); and the output shaft of the rotary motor (503) is connected to a rotary joint (6).

3. A petrochemical oil-water separation system according to claim 2, characterized in that: The filtering assembly comprises a support plate (9) fixedly mounted on a mounting frame (8); a first rolling rod (901) is arranged on the support plate (9); a second rolling rod (902) is arranged on the mounting frame (8); a filter cloth (10) is wound and connected to the second rolling rod (902); an end of the filter cloth (10) away from the second rolling rod (902) is connected to the first rolling rod (901); a driving motor for driving the second rolling rod (902) to rotate is arranged on the mounting frame (8); a synchronous wheel (903) is arranged between the second rolling rod (902) and the first rolling rod (901); and a synchronous belt is arranged between the two synchronous wheels (903).

4. A petrochemical oil-water separation system according to claim 3, characterized in that: A connecting plate (11) is fixedly provided on the support plate (9), an elastic telescopic plate (111) is fixedly provided on the connecting plate (11), a pressing roller (112) is rotatably connected to the elastic telescopic plate (111) via a pin shaft, and the pressing roller (112) movably contacts the filter cloth (10) on the first rolling rod (901).

5. A petrochemical oil-water separation system according to claim 4, characterized in that: A pressure rod (12) is also fixedly provided on the support plate (9), and the pressure rod (12) movably contacts the filter cloth (10) between the first winding rod (901) and the second winding rod (902).

6. A petrochemical oil-water separation system according to claim 5, characterized in that: The stirring assembly comprises a rotating tube (13) rotatably connected to a mounting frame (8), the rotating tube (13) being provided with a plurality of stirring blades (131) equidistantly arranged along its axial direction, the rotating tube (13) being provided with a driven bevel gear (132), and the second rolling rod (902) being provided with a driving bevel gear (9021) meshing with the driven bevel gear (132).

7. A petrochemical oil-water separation system according to claim 6, characterized in that: The additive discharge assembly comprises a material box (14) and a working shell (15) fixedly mounted on a mounting frame (8); a liquid inlet valve is arranged between the material box (14) and the working shell (15); a piston block (151) is slidably connected inside the working shell (15); a moving rod (152) is fixedly mounted on the piston block (151); a first connecting plate (9011) is fixedly mounted on the first winding rod (901); a second connecting plate (9012) is movably connected between the first connecting plate (9011) and the moving rod (152); a liquid outlet valve is arranged on the working shell (15); the working shell (15) is connected to a liquid guide tube (153) via the liquid outlet valve; an end of the liquid guide tube (153) away from the working shell (15) passes through the mounting frame (8) and is rotatably connected to the bottom of the rotating tube (13).

8. A petrochemical oil-water separation system according to claim 7, characterized in that: The rotating tube (13) is provided with a plurality of discharge holes (133) along its axial direction, and a self-weight floating plate (134) for covering the discharge holes (133) is slidably connected to the outer side of the rotating tube (13).

9. A petrochemical oil-water separation system according to claim 8, characterized in that: The separation tank (1) is slidably connected to a sealing slide plate (16) corresponding one-to-one to the plurality of material storage tanks (4), each of the sealing slide plates (16) is provided with an oil drain valve (161), and the bottom of the separation tank (1) is provided with a drain valve (17) corresponding one-to-one to the plurality of material storage tanks (4).

10. A petrochemical oil-water separation process, which is processed by applying a petrochemical oil-water separation system according to claim 9, characterized in that: The following steps are involved: S1: introducing an oil-water mixture into the separation tank (1) through the guide pipe (7), and the oil-water mixture enters the storage tank (4) through the rotating joint (6), the discharge pipe (601), and the filter cloth (10); S2: Controlling the operation of the driving motor in the mounting frame (8), the driving motor drives the second reel (902) to rotate when in operation, the first reel (901) rotates along with the second reel (902) under the action of the synchronous wheel (903) and the synchronous belt, the second reel (902) releases the filter cloth (10), the first reel (901) reels the filter cloth (10), so that the filter cloth (10) always filters the filter residue in the oil-water mixture in a clean state, the filter residue is reeled along with the filter cloth (10), when the first reel (901) reels the filter cloth (10), the pressing roller (112) presses the filter cloth (10), so that the filter cloth (10) and the oil-water mixture contained in the filter residue are squeezed out, and the squeezed oil-water mixture falls into the storage tank (4); S3: When the first rolling rod (901) rotates, it drives the first connecting plate (9011) to rotate. The first connecting plate (9011) drives the moving rod (152) to move back and forth through the second connecting plate (9012), so that the piston block (151) moves back and forth in the working shell (15). The working shell (15) extracts the additive in the material box (14) and discharges it into the rotating tube (13) through the liquid guide tube (153). The additive is discharged into the oil-water mixture in the storage tank (4) through the discharge hole (133); S4: When the second rolling rod (902) rotates, the driving bevel gear (9021) is meshed with the driven bevel gear (132) on the rotating tube (13) to transmit the rotation, and the rotating tube (13) drives the stirring blade (131) to rotate, so that the additive and the oil-water mixture are fully mixed; S5: As the liquid level of the oil-water mixture in the storage tank (4) rises, the self-weight floating plate (134) moves upward under the action of buoyancy, causing more discharge holes (133) at the rotating tube (13) to leak out, and the additive is discharged from the multiple discharge holes (133) at the same time; S6: After the oil-water mixture in the storage tank (4) reaches a predetermined height, the hydraulic cylinder (501) drives the mounting frame (8) to move upwards through the rotating joint (6), so that the stirring assembly moves out of the storage tank (4), and the self-weight floating plate (134) slides down and resets under the action of its own gravity. Then, the rotating motor (503) drives the rotating joint (6) to rotate an angle, so that the stirring assembly is placed on the upper side of the next storage tank (4) to be discharged. The hydraulic cylinder (501) drives the stirring assembly to move downwards through the rotating joint (6), so that the stirring assembly is placed in the storage tank (4), and the oil-water mixture is continuously discharged to the second storage tank (4) through the guide pipe (7). The oil-water mixture that continues to be discharged will not disturb the oil-water mixture in the previous storage tank (4), and the oil-water mixture in the previous storage tank (4) is allowed to stand and stratify; S7: Repeat S2-S6 to discharge the oil-water mixture into multiple storage tanks (4) in sequence. Prior to this, the additive is mixed with the oil-water mixture after stirring, and then allowed to stand and rapidly separate into layers. The staff moves the sealing slide (16) to move the oil discharge valve (161) to the height of the oil-water separation layer, discharges the oil through the oil discharge valve (161), and then discharges the water through the water discharge valve (17).

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