Thiol removal separation tank for coked liquefied gas

Abstract

The utility model relates to the technical field of separation tanks, and discloses a mercaptan removal separation tank for coked liquefied gas, which comprises a treatment box, a base is arranged at the bottom of the treatment box, a separation tank for storing liquid is vertically, upwards and fixedly mounted at the bottom in the treatment box, and a gas inlet is horizontally mounted at the top of the surface of one side of the treatment box. A feeding opening is vertically and fixedly formed in the center position of one end of the top surface of the treatment box, and a rotating rod capable of rotating is vertically mounted in the center position of the interior of the separation tank through a bearing. According to the utility model, the top cover is opened, separated liquid is conveyed to the bottom end in the separation tank through the feeding hole, liquefied gas is conveyed to the interior of the separation tank through the gas inlet, the driving motor is started through the control panel, and the driving motor drives the rotating rod to rotate; through the rotation of the rotating rod, each group of stirring rings and the fixed rod enable the separation liquid to fully react with liquefied gas, so that mercaptan is removed, and normal use can be carried out without subsequent impurity removal.

Description

Technical Field

[0001] The utility model relates to the technical field of separation tanks, in particular to a mercaptan removal separation tank for coking liquefied gas. Background Art

[0002] Coker gas (LCG) is primarily composed of C3 and C4 hydrocarbons and has a high sulfur content. In recent years, with the continuous expansion of delayed coking unit capacity, the production of LCG has also increased rapidly. Therefore, to fully and rationally utilize this LCG, it is necessary to remove the sulfides to recover the more economically valuable propylene and improve the economic efficiency of the refining process. However, even after desulfurization in existing mercaptan removal units, the total sulfur content of LCG remains as high as 300-400 ppm, with mercaptans being the main component. This makes it impossible to process propylene in the gas separation unit for propylene recovery, resulting in a waste of propylene resources.

[0003] In the existing separation tank, the separated liquid falls directly to the bottom of the cylinder and is discharged through the drain valve, so the discharged liquid is mixed with impurities. Such liquid is difficult to be effectively utilized directly after discharge, and subsequent impurities need to be removed before normal use. Therefore, a certain number of processes are added, resulting in a waste of human resources.

[0004] Therefore, we propose a mercaptan removal separation tank for coking liquefied gas. Utility Model Content

[0005] The utility model mainly solves the technical problems existing in the above-mentioned prior art and provides a mercaptan removal separation tank for coking liquefied gas.

[0006] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a mercaptan removal separation tank for coking liquefied gas, comprising a treatment box, a base is provided at the bottom of the treatment box, a separation tank for storing liquid is fixedly installed vertically upward at the bottom of the interior of the treatment box, an air inlet is horizontally installed at the top of one side surface of the treatment box, a feed port is vertically fixedly installed at the center position of one end of the top surface of the treatment box, a rotatable rotating rod is vertically installed at the center position of the interior of the separation tank through a bearing, a driving motor for driving the rotating rod to rotate is vertically installed at the center position of the top surface of the treatment box, and multiple groups of horizontal and vertical stirring devices for stirring the liquefied gas are arranged inside the separation tank. A stirring ring, a drain pipe for discharging the liquid is fixedly installed vertically downward at the bottom of the processing box, and the end of the drain pipe away from the processing box is vertically fixedly connected to the first fixed plate, and the other end of the first fixed plate is vertically movably provided with a second fixed plate, and limiting grooves are horizontally provided on both sides of the end of the first fixed plate away from the processing box, and the outer surface of the first fixed plate is vertically movably clamped with a filter plate for filtering the liquid, and the two side surfaces of the filter plate are horizontally fixedly connected with fixed blocks, and the top surface of each group of fixed blocks is provided with limiting holes vertically downward, and the top of each group of limiting grooves is vertically fixedly connected with a reset spring, and the bottom of each group of reset springs is vertically connected to a limit block for limiting the filter plate.

[0007] Preferably, the interior of the processing box is a hollow rectangular structure, the top of the separation tank is an open circular groove, the air inlet is connected to the interior of the separation tank, a valve is provided on the outer surface of the air inlet, the feed port is located above the top surface of the separation tank, and a flip-up top cover is installed on the top surface of the feed port through a hinge.

[0008] Preferably, the driving motor is electrically connected to the control panel, and each group of stirring rings is in the shape of a horizontal circular ring. The outer surface of the rotating rod is horizontally fixed with multiple groups of fixing rods for fixing the stirring rings, and one end of each group of fixing rods is fixedly connected to the inner surface of the corresponding stirring ring, and each group of stirring rings corresponds vertically to each other.

[0009] Preferably, the drain pipe is in a horizontal L-shape as a whole, a valve is provided on the outer surface of the drain pipe, one end of the drain pipe is connected to the interior of the separation tank, the second fixed plate and the first fixed plate are threadedly connected by bolts, and a drain outlet is provided horizontally on the outer surface of the second fixed plate.

[0010] Preferably, the limiting groove is connected to the interior of the first fixed plate, the filter plate is disc-shaped as a whole, each group of fixed blocks is movably engaged inside the corresponding limiting groove, each group of limiting blocks is vertically T-shaped as a whole, and the interior of each group of limiting blocks is movably engaged inside the corresponding limiting hole.

[0011] The utility model provides a mercaptan removal separation tank for coking liquefied gas, which has the following beneficial effects:

[0012] 1. A mercaptan removal separation tank for coking liquefied gas. The gas-liquid separation tank is characterized in that the top cover is opened to transport the separated liquid to the bottom end of the separation tank through the feed port, and the liquefied gas is transported to the interior of the separation tank through the air inlet. The drive motor is started through the control panel, and the driving motor drives the rotating rod to rotate. Through the rotation of the rotating rod, each group of stirring rings and the fixed rod fully reacts the separated liquid with the liquefied gas to remove the mercaptan. At this time, after opening the drain pipe, the liquid will first pass through the filter plate. The filter plate filters the impurities in the liquid and then the liquid can be discharged through the drain port to be collected by personnel. The liquid filtered by the filter plate is also separated from the impurities and can be directly and effectively utilized according to the use direction. There is no need to remove impurities before normal use, which prevents waste of human resources.

[0013] 2. In this mercaptan removal separation tank for coking liquefied gas, since the filter plates normally need to be replaced regularly after long-term use, replacement is achieved by removing the second fixed plate from the side end of the first fixed plate, pulling upward on the return spring. The return spring's own elasticity causes one end of the stop block to separate from the corresponding stop hole, thereby completing the removal of the filter plates. This device is simple and highly practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for the embodiments or the description of the prior art. Obviously, the drawings described below are only exemplary, and those skilled in the art can derive other implementation drawings based on the provided drawings without inventive effort.

[0015] The structures, proportions, sizes, etc. illustrated in this specification are intended solely to complement the contents disclosed herein and to facilitate understanding and reading by persons familiar with the art. They are not intended to limit the conditions under which the present invention may be implemented and therefore have no substantive technical significance. Any structural modifications, changes in proportions, or adjustments in size, without affecting the efficacy and objectives of the present invention, shall remain within the scope of the technical contents disclosed herein.

[0016] Figure 1 This is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the stirring assembly of the utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the limit assembly of the utility model.

[0019] Legend:

[0020] 1. Processing box; 2. Base; 3. Separation tank; 4. Air inlet; 5. Feed inlet; 6. Top cover; 7. Rotating rod; 8. Drive motor; 9. Stirring ring; 10. Fixed rod; 11. Drain pipe; 12. First fixed plate; 13. Second fixed plate; 14. Drain outlet; 15. Limiting groove; 16. Filter plate; 17. Fixed block; 18. Limiting hole; 19. Return spring; 20. Limiting block. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] In the description of the utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," "the other end," and the like, indicating positions or relationships, are based on the positions or relationships shown in the accompanying drawings and are intended solely to facilitate the description of the utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0023] Example: A mercaptan removal separation tank for coking liquefied gas, such as Figure 1-Figure 3As shown, it includes a treatment box 1, the bottom of the treatment box 1 is vertically fixedly connected to four groups of bases 2, the interior of the treatment box 1 is a hollow rectangular structure, the bottom of the interior of the treatment box 1 is vertically fixedly installed with a separation tank 3 for storing liquid, the top of the separation tank 3 is an open circular groove, and an air inlet 4 is horizontally installed on the top of one side surface of the treatment box 1. The air inlet 4 is connected to the interior of the separation tank 3, and a valve is provided on the outer surface of the air inlet 4. A feed port 5 is vertically fixedly installed at the center position of one end of the top surface of the treatment box 1. The feed port 5 is located above the top surface of the separation tank 3, and the top surface of the feed port 5 is installed with a hinge. The top cover 6 is flipped, and a rotatable rotating rod 7 is vertically installed at the inner center position of the separation tank 3 through a bearing. A driving motor 8 for driving the rotating rod 7 to rotate is vertically installed at the center position of the top surface of the processing box 1. The driving motor 8 is electrically connected to the control panel. There are multiple groups of stirring rings 9 for stirring the liquefied gas horizontally and vertically inside the separation tank 3. Each group of stirring rings 9 is a horizontal circular ring. The outer surface of the rotating rod 7 is horizontally fixedly connected to multiple groups of fixed rods 10 for fixing the stirring rings 9. One end of each group of fixed rods 10 is fixedly connected to the inner surface of the corresponding stirring ring 9, and each group of stirring rings 9 corresponds vertically to each other.

[0024] A drain pipe 11 for discharging the liquid is fixedly installed vertically downward at the bottom of the processing box 1. The drain pipe 11 is horizontally L-shaped as a whole. A valve is provided on the outer surface of the drain pipe 11. One end of the drain pipe 11 is connected to the inside of the separation tank 3. The end of the drain pipe 11 away from the processing box 1 is vertically fixedly connected to a first fixed plate 12. The other end of the first fixed plate 12 is vertically movably provided with a second fixed plate 13. The second fixed plate 13 is threadedly connected to the first fixed plate 12 by bolts. A drain port 14 is horizontally provided on the outer surface of the second fixed plate 13. Limiting grooves 15 are horizontally provided on both sides of the end of the first fixed plate 12 away from the processing box 1. The limiting grooves 15 are connected to the first fixed plate The interior of the disk 12 is connected, and the outer surface of the first fixed disk 12 is vertically movably connected with a filter plate 16 for filtering the liquid. The filter plate 16 is disc-shaped as a whole, and the two side surfaces of the filter plate 16 are horizontally fixedly connected with fixed blocks 17. Each group of fixed blocks 17 is located in the corresponding limit groove 15 and is movably connected. A limit hole 18 is vertically downwardly provided on the top surface of each group of fixed blocks 17. A return spring 19 is vertically fixedly connected to the top of each group of limit grooves 15. The bottom of each group of return springs 19 is vertically connected to a limit block 20 for limiting the filter plate 16. Each group of limit blocks 20 is vertically T-shaped as a whole, and the interior of each group of limit blocks 20 is located in the corresponding limit hole 18 and is movably connected.

[0025] Working principle: The gas-liquid separation tank opens the top cover 6 to transport the separated liquid to the bottom end of the separation tank 3 through the feed port 5, and transports the liquefied gas to the inside of the separation tank 3 through the air inlet 4. The drive motor 8 is started through the control panel, and the driving motor 8 drives the rotating rod 7 to rotate. Through the rotation of the rotating rod 7, each group of stirring rings 9 and the fixed rod 10 fully react the separated liquid with the liquefied gas to remove the mercaptan. At this time, after opening the drain pipe 11, the liquid will first pass through the filter plate 16. After the filter plate 16 filters the impurities in the liquid, it can be discharged through the drain port 14 to be collected by personnel. The liquid filtered by the filter plate 16 is also separated from the impurities, and can be directly and effectively utilized according to the direction of use. There is no need to remove impurities later before normal use, which prevents waste of human resources.

[0026] Working Principle: Since the filter plate 16 needs to be replaced regularly after a long period of use, the second fixing plate 13 is removed from the side of the first fixing plate 12, and the return spring 19 is pulled upward. Due to the elasticity of the return spring 19, one end of the limit block 20 is separated from the corresponding limit hole 18. In this way, the filter plate 16 is removed. This device is simple and practical.

[0027] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.

Claims

1. A mercaptan removal separation tank for coking liquefied gas, characterized by: The invention comprises a processing box (1), wherein a base (2) is provided at the bottom of the processing box (1), a separation tank (3) for storing liquid is fixedly installed vertically upward at the bottom of the processing box (1), an air inlet (4) is horizontally installed at the top of one side surface of the processing box (1), a feed port (5) is vertically fixedly installed at the center of one end of the top surface of the processing box (1), a rotating rod (7) that can rotate is vertically installed at the center of the interior of the separation tank (3) through a bearing, a driving motor (8) for driving the rotating rod (7) to rotate is vertically installed at the center of the top surface of the processing box (1), multiple groups of stirring rings (9) for stirring liquefied gas are arranged horizontally and vertically inside the separation tank (3), and a drain pipe (11) for discharging liquid is fixedly installed vertically downward at the bottom of the processing box (1). The end of the discharge pipe (11) away from the processing box (1) is vertically fixedly connected to the first fixed disk (12), and the other end of the first fixed disk (12) is vertically movably provided with a second fixed disk (13). Limiting grooves (15) are horizontally provided on both sides of the end of the first fixed disk (12) away from the processing box (1). The outer surface of the first fixed disk (12) is vertically movably connected to a filter plate (16) for filtering the liquid. The two side surfaces of the filter plate (16) are horizontally fixedly connected to fixed blocks (17). The top surface of each group of fixed blocks (17) is vertically downwardly provided with a limiting hole (18). The top of each group of limiting grooves (15) is vertically fixedly connected to a reset spring (19). The bottom of each group of reset springs (19) is vertically connected to a limiting block (20) for limiting the filter plate (16).

2. The mercaptan removal separation tank for coking liquefied gas according to claim 1, characterized in that: The interior of the treatment box (1) is a hollow rectangular structure, the top of the separation tank (3) is an open circular groove, the air inlet (4) is connected to the interior of the separation tank (3), the outer surface of the air inlet (4) is provided with a valve, the feed port (5) is located above the top surface of the separation tank (3), and the top surface of the feed port (5) is provided with a reversible top cover (6) via a hinge.

3. The mercaptan removal separation tank for coking liquefied gas according to claim 1, characterized in that: The driving motor (8) is electrically connected to the control panel. Each group of stirring rings (9) is in the shape of a horizontal circular ring. The outer surface of the rotating rod (7) is horizontally fixedly connected to a plurality of fixing rods (10) for fixing the stirring rings (9). One end of each group of fixing rods (10) is fixedly connected to the inner surface of the corresponding stirring ring (9). Each group of stirring rings (9) is vertically corresponding to each other.

4. The mercaptan removal separation tank for coking liquefied gas according to claim 1, characterized in that: The drain pipe (11) is in a horizontal L-shape as a whole. A valve is provided on the outer surface of the drain pipe (11). One end of the drain pipe (11) is connected to the interior of the separation tank (3). The second fixed plate (13) and the first fixed plate (12) are threadedly connected by bolts. A drain outlet (14) is provided horizontally on the outer surface of the second fixed plate (13).

5. The mercaptan removal separation tank for coking liquefied gas according to claim 1, characterized in that: The limiting groove (15) is communicated with the interior of the first fixed disk (12); the filter plate (16) is disc-shaped as a whole; each group of fixing blocks (17) is located inside the corresponding limiting groove (15) and is movably engaged; each group of limiting blocks (20) is vertically T-shaped as a whole; the interior of each group of limiting blocks (20) is located inside the corresponding limiting hole (18) and is movably engaged.

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