A set of efficient oil-water separation elements

Abstract

The application discloses a set of high-efficiency oil-water separation elements, comprising a three-phase separation tank, a baffle is arranged in the three-phase separation tank, a gas outlet and a dirty oil outlet are arranged on one side of the baffle of the three-phase separation tank, a gas inlet is arranged on the side far from the gas outlet, a water bag is arranged at the bottom of the three-phase separation tank, an acidic water outlet is arranged at the bottom of the water bag, a liquid remover and a baffling device are further arranged, the liquid remover is fixedly arranged in the lower region between the gas inlet and the baffle in the three-phase separation tank; the liquid remover and the baffling device are staggered to form secondary gas-liquid separation, effectively avoiding the disturbance of high-speed flowing oil gas to the liquid in the tank after entering the tank, avoiding the intensification of the emulsification effect, and due to the effect of the liquid remover and the baffling device, the oil-water separation effect is more prominent, and the water content in the separated gas is also obviously reduced.

Description

Technical Field

[0001] This application relates to the technical field of venting systems for delayed coking units in the petrochemical industry, specifically a set of high-efficiency oil-water separation elements. Background Technology

[0002] The venting system of the delayed coking unit uses closed-loop in-tower contact cooling technology to handle the high-temperature steam generated during the large-volume blowing and feedwater operation phases of the coke tower during cold coking, and to recover some of the oil and gas carried by the high-temperature steam. After being cooled by the top cooler, the high-temperature oil and gas enters the top three-phase separator, where non-condensable steam, acidic water, and sludge are separated. The non-condensable steam enters the low-pressure fuel gas system, the acidic water enters the stripping unit, and the sludge enters the sludge system.

[0003] Currently, the three-phase separators at the top of venting towers generally employ static settling separation technology. The separator contains two chambers of different sizes separated by a partition. High-temperature oil and gas carrying a large amount of water vapor enter the larger chamber, and after overflowing, the oil and gas are discharged into the fuel gas system through the gas outlet at the top of the tank. The remaining oil-water mixture separates into layers due to the difference in oil and water density. When the liquid level exceeds the height of the partition, the upper layer of oil crosses the partition and enters the smaller chamber, while the water settles in the water pocket below the larger chamber, thus achieving oil-water separation.

[0004] In actual production, high-speed, high-temperature oil and gas containing a large amount of water vapor frequently enters the three-phase separator, disturbing the liquid in the larger chambers. This not only prevents sufficient settling but also causes some oil and water to re-mix and emulsify due to the disturbance. When the liquid level exceeds the baffle, the oil-water mixture containing acidic water enters the smaller chambers, resulting in water contamination in the oil. Furthermore, the airflow disturbance also causes oil contamination in the water tank of the separator. Due to poor separation efficiency, the oil content in the acidic water is severely excessive, making it impossible to send to downstream units, causing serious disruption to normal production. Therefore, a set of high-efficiency oil-water separation elements is proposed to solve this problem. Summary of the Invention

[0005] The technical problem to be solved by this application is to overcome the existing defects and provide a set of high-efficiency oil-water separation elements, which can effectively solve the problems in the background art.

[0006] To achieve the above objectives, this application provides the following technical solution: a set of high-efficiency oil-water separation elements, including a three-phase separation tank, a baffle plate inside the three-phase separation tank, a gas outlet and a sludge / oil outlet on one side of the baffle plate, a gas inlet on the side away from the gas outlet, a water tank at the bottom of the three-phase separation tank, an acidic water outlet at the bottom of the water tank, and a liquid separator and a baffle device. The liquid separator is fixedly installed inside the three-phase separation tank in the lower region between the gas inlet and the baffle plate, and the baffle device is fixedly installed inside the three-phase separation tank in the upper region between the gas inlet and the baffle plate, with the baffle device located above the liquid separator.

[0007] Furthermore, the liquid separator includes a porous baffle, liquid separator packing, an upper sealing plate, a lower sealing plate, a first movable baffle fixing plate, and a first movable baffle. The porous baffle is welded inside the three-phase separator. The liquid separator packing is provided on one side of the porous baffle. The upper part of the liquid separator packing is connected to the porous baffle through the upper sealing plate, and the lower part of the liquid separator packing is connected to the porous baffle through the lower sealing plate. At least two first movable baffles are provided on the side of the liquid separator packing away from the porous baffle. The first movable baffles are connected to the three-phase separator through the first movable baffle fixing plate.

[0008] Furthermore, the packing of the liquid removal device is composed of an array of coalescing corrugated plates, and the coalescing corrugated plates are provided with guide grooves.

[0009] Furthermore, two first vertical strips are provided on one side of the porous baffle.

[0010] Furthermore, the baffle device includes a second movable baffle, a second movable baffle fixing plate, a sealing plate, a winged baffle, a fixed baffle, a mounting strip, a base frame, and a baffle plate. The number of fixed baffles is not less than two. The two fixed baffles are connected to the three-phase separator tank through the mounting strip. A sealing plate is provided on one side of the mounting strip. The upper surface of the sealing plate is connected to the three-phase separator tank through the winged baffle. The lower part of the sealing plate is connected to the base frame through the baffle plate. Both the baffle plate and the winged baffle plate are provided with not less than two second movable baffles. The second movable baffles are connected to the three-phase separator tank through the second movable baffle fixing plate.

[0011] Furthermore, the upper surface of the sealing plate is provided with not less than two second horizontal strips.

[0012] Furthermore, the base frame is welded together from an array of multiple crossbeams, with gaps between adjacent crossbeams.

[0013] Compared with the prior art, this application forms a secondary gas-liquid separation by staggering the liquid separator and the baffle device, which effectively avoids the disturbance of the liquid in the tank by the high-speed flowing oil and gas after entering the separation tank, and avoids aggravating its emulsification. Furthermore, due to the function of the liquid separator and the baffle device, not only is the oil-water separation effect more prominent, but the water content in the separated gas is also significantly reduced. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this application; Figure 2 This is the front view of the component liquid separator; Figure 3 For this application Figure 2 The left view; Figure 4 For this application Figure 2 The right view; Figure 5 This is the front view of the component deflector device; Figure 6 For this application Figure 5 The left view; Figure 7 For this application Figure 5 The right view.

[0015] In the diagram: 1 Three-phase separator, 2 Baffle, 3 Gas outlet, 4 Sludge / oil outlet, 5 Gas inlet, 6 Water tank, 7 Acidic water outlet, 8 Liquid separator, 81 Porous baffle, 82 Liquid separator packing, 83 Upper sealing plate, 84 Lower sealing plate, 85 First movable baffle fixing plate, 86 First movable baffle, 87 First vertical bar, 9 Baffle device, 91 Second movable baffle, 92 Second movable baffle fixing plate, 93 Sealing plate, 94 Baffle with wings, 95 Fixed baffle, 96 Mounting bar, 97 Base frame, 98 Baffle. Detailed Implementation

[0016] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments in this application (for ease of description and understanding, hereinafter referred to as...), Figure 2 (The above is described above). All other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this application.

[0017] Please see Figure 1-7This application provides a set of high-efficiency oil-water separation element technical solutions: a set of high-efficiency oil-water separation elements, including a three-phase separation tank 1, a baffle 2 is provided inside the three-phase separation tank 1, a gas outlet 3 and a sludge-oil outlet 4 are provided on one side of the baffle 2, a gas inlet 5 is provided on the side away from the gas outlet 3, a water tank 6 is provided at the bottom of the three-phase separation tank 1, and an acidic water outlet 7 is provided at the bottom of the water tank 6.

[0018] The liquid separator 8 and the baffle device 9 are fixed inside the three-phase separator 1. The liquid separator 8 is fixedly installed in the lower region between the gas inlet 5 and the baffle 2 inside the three-phase separator 1. The baffle device 9 is fixedly installed in the upper region between the gas inlet 5 and the baffle 2 inside the three-phase separator 1. The baffle device 9 is located above the liquid separator 8.

[0019] The liquid separator 8 and the baffle device 9 form an alternating structure, so that the liquid separator 8 performs initial separation of the gas-liquid mixture, and the baffle device 9 performs secondary separation of the gas-liquid mixture, thereby improving the separation effect.

[0020] Furthermore, the liquid separator 8 includes a porous baffle 81, a liquid separator packing 82, an upper sealing plate 83, a lower sealing plate 84, a first movable baffle fixing plate 85, and a first movable baffle 86. The porous baffle 81 is welded inside the three-phase separator 1, and the liquid separator packing 82 is provided on one side of the porous baffle 81.

[0021] The porous baffle 81 allows the gas-liquid mixture to pass through the porous baffle 81 and enter the packing 82 of the liquid removal device. The packing 82 of the liquid removal device is composed of an array of coalescing corrugated plates. The coalescing corrugated plates are provided with guide grooves, so that the gas-liquid mixture comes into contact with and collides with the array of coalescing corrugated plates. The droplets are captured and gathered by the blades of the coalescing corrugated plates. When the weight of the droplet itself is greater than the resultant force of the gas lift force and the liquid surface tension, the droplet will flow downward along the guide grooves of the blades, while the gas moves upward through the channel formed by the gaps between the blades, thereby realizing gas-liquid separation.

[0022] The packing material 82 of the liquid removal device is connected to the porous baffle 81 above via the upper sealing plate 83, and the packing material 82 of the liquid removal device is connected to the porous baffle 81 below via the lower sealing plate 84.

[0023] Two first vertical bars 87 are provided on one side of the porous baffle 81. The first vertical bars can support the porous baffle 81 and improve the strength and stability of the porous baffle 81.

[0024] The upper sealing plate 83 and the lower sealing plate 84 can limit the position of the packing material 82 of the liquid removal device, making it convenient for workers to install the packing material 82 of the liquid removal device.

[0025] The packing 82 of the liquid removal device is provided with at least two first movable baffles 86 on the side away from the porous baffle 81. The first movable baffles 86 are connected to the three-phase separator 1 through the first movable baffle fixing plate 85.

[0026] The first movable baffle 86 is designed to facilitate workers to fix the packing 82 of the liquid removal device inside the upper sealing plate 83 and the lower sealing plate 84. The first movable baffle 86 is fixed to the first movable baffle fixing plate 85 by bolts and nuts. The first movable baffle fixing plate 85 is welded inside the three-phase separator 1.

[0027] Furthermore, the flow deflector 9 includes a second movable baffle 91, a second movable baffle fixing plate 92, a sealing plate 93, a winged flow deflector 94, a fixed baffle 95, a mounting strip 96, a base frame 97, and a flow deflector 98. The number of fixed baffles 95 is not less than two. The two fixed baffles 95 are connected to the three-phase separator 1 through the mounting strip 96. A sealing plate 93 is provided on one side of the mounting strip 96.

[0028] There are three fixed baffles 95, which are fixed on the mounting strip 96. The mounting strip 96 is semi-circular, and a sealing plate 93 for separating the baffle 98 and the winged baffle 94 is fixed on one side of the mounting strip 96.

[0029] Furthermore, the upper surface of the sealing plate 93 is provided with no fewer than two second horizontal bars 99.

[0030] The upper surface of the sealing plate 93 is provided with three second horizontal bars 99, which can enhance the strength and stability of the sealing plate 93.

[0031] The upper surface of the sealing plate 93 is connected to the three-phase separator tank 1 via a winged baffle 94. The lower part of the sealing plate 93 is connected to the base frame 97 via a baffle 98. Both the baffle 98 and the winged baffle 94 are provided with no less than two second movable baffles 91. The second movable baffles 91 are connected to the three-phase separator tank 1 via a second movable baffle fixing plate 92.

[0032] The second movable baffle 91 can limit and fix the winged baffle 94 and the baffle 98. The second movable baffle 91 is fixed on the second movable baffle fixing plate 92 by bolt and nut structure. The winged baffle 94 and the baffle 98 are both composed of multi-layer bent plate blades.

[0033] Furthermore, the base frame 97 is welded together from an array of multiple crossbeams, with gaps between adjacent crossbeams.

[0034] In operation: High-temperature oil and gas containing a large amount of water vapor from the coking tower is cooled by an air cooler and enters the three-phase separator 1 through the oil and gas inlet 5. When the steam encounters the liquid separator 8, it collides with the array of coalescing corrugated plates. The droplets are captured and gathered by the blades of the coalescing corrugated plates. When the weight of the droplets is greater than the resultant force of the gas's upward force and the liquid's surface tension, the droplets flow downward along the guide grooves of the blades, while the gas moves upward through the channels formed by the gaps between the blades, thus achieving gas-liquid separation. The gas flows in the upper space of the tank, while the liquid flows to the bottom of the tank. When the gas separated in the first step flows through the baffle device 9, the droplets that escape with the gas collide with the blades of the baffle device and are captured and gathered again, thus achieving secondary gas-liquid separation. The separated liquid has a very slow flow velocity. After natural sedimentation, the water and oil will separate into layers. When the oil level on the upper layer exceeds the height of the baffle 2, the sludge oil crosses the baffle and enters the cavity on the left side of the separator, achieving oil-water separation.

[0035] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A set of high-efficiency oil-water separation elements, including a three-phase separation tank (1), wherein a baffle (2) is provided inside the three-phase separation tank (1), a gas outlet (3) and a sludge-oil outlet (4) are provided on one side of the baffle (2), and a gas inlet (5) is provided on the side away from the gas outlet (3), and a water tank (6) is provided at the bottom of the three-phase separation tank (1), wherein an acidic water outlet (7) is provided at the bottom of the water tank (6), characterized in that: It also includes a liquid separator (8) and a baffle (9). The liquid separator (8) is fixedly installed in the lower region between the gas inlet (5) and the partition (2) inside the three-phase separator (1). The baffle (9) is fixedly installed in the upper region between the gas inlet (5) and the partition (2) inside the three-phase separator (1), and the baffle (9) is located above the liquid separator (8).

2. The set of high-efficiency oil-water separation elements according to claim 1, characterized in that: The liquid separator (8) includes a porous baffle (81), liquid separator packing (82), an upper sealing plate (83), a lower sealing plate (84), a first movable baffle fixing plate (85), and a first movable baffle (86). The porous baffle (81) is welded inside the three-phase separator (1). A liquid separator packing (82) is provided on one side of the porous baffle (81). The liquid separator packing (82) is connected to the porous baffle (81) above the upper sealing plate (83) and to the porous baffle (81) below the lower sealing plate (84). At least two first movable baffles (86) are provided on the side of the liquid separator packing (82) away from the porous baffle (81). The first movable baffles (86) are connected to the three-phase separator (1) through the first movable baffle fixing plate (85).

3. The set of high-efficiency oil-water separation elements according to claim 2, characterized in that: The packing (82) of the liquid removal device is composed of an array of coalescing corrugated plates, and the coalescing corrugated plates are provided with guide grooves.

4. The set of high-efficiency oil-water separation elements according to claim 2, characterized in that: Two first vertical strips (87) are provided on one side of the porous baffle (81).

5. The set of high-efficiency oil-water separation elements according to claim 1, characterized in that: The baffle device (9) includes a second movable baffle (91), a second movable baffle fixing plate (92), a sealing plate (93), a winged baffle (94), a fixed baffle (95), an installation strip (96), a base frame (97), and a baffle (98). The number of fixed baffles (95) is not less than two. The two fixed baffles (95) are connected to the three-phase separator (1) through the installation strip (96). A sealing plate (93) is provided on one side of the installation strip (96). The upper surface of the sealing plate (93) is connected to the three-phase separator (1) through the winged baffle (94). The lower part of the sealing plate (93) is connected to the base frame (97) through the baffle (98). Both the baffle (98) and the winged baffle (94) are provided with not less than two second movable baffles (91). The second movable baffles (91) are connected to the three-phase separator (1) through the second movable baffle fixing plate (92).

6. The set of high-efficiency oil-water separation elements according to claim 5, characterized in that: The upper surface of the sealing plate (93) is provided with not less than two second horizontal strips (99).

7. The set of high-efficiency oil-water separation elements according to claim 5, characterized in that: The base frame (97) is welded together from an array of multiple crossbeams, and there are gaps between adjacent crossbeams.

Images