Separating tank for removing mercaptan from coked liquefied gas

Abstract

The utility model discloses a separation tank for removing mercaptan from coked liquefied gas, and particularly relates to the technical field of liquefied gas separation tanks, which comprises a tank body, a top cover is mounted at the top end of the tank body, a gas inlet pipe is arranged on the top cover, an exhaust pipe is arranged on one side of the gas inlet pipe, a bottom plate is mounted at the bottom end of the tank body, and rollers are mounted at the bottom end of the bottom plate. A supporting plate is supported at the bottoms of the rolling wheels, supporting legs are arranged at the bottom end of the supporting plate, a motor connected with the bottom plate is installed at the bottom of the supporting plate, a flow dividing pipe is installed at the bottom end of the air inlet pipe, branch pipes are installed at the bottom end of the flow dividing pipe, a baffle is arranged at the bottom end in the tank body, and strip-shaped through holes are evenly formed in the baffle. The number of the idler wheels is multiple, the idler wheels are annularly arranged, and the number of the branch pipes is multiple. The separation tank has the advantages that the dispersity of liquefied gas in the separation tank can be improved, and the mixing effect of the liquefied gas and a reaction solution is improved, so that the mercaptan removal effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of liquefied gas separation tanks, and more specifically, to a separation tank for removing mercaptans from 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] The utility model patent with patent announcement number CN218901387U discloses a separation tank for removing mercaptans from coking liquefied gas, comprising a tank body and a base. The base has a rotating chamber defined therein, a servo motor fixedly connected to the inner wall of the rotating chamber, an output end of the servo motor fixedly connected to a reciprocating screw, the other end of the reciprocating screw rotatably connected to the inner wall of the rotating chamber, a moving block threadedly connected to the reciprocating screw, the upper end face of the moving block fixedly connected to a connecting rod, the upper end of the connecting rod passing through the upper end face of the base and fixedly connected to a first tooth plate. Through the coordinated arrangement of the first tooth plate, the second tooth plate, and the moving block, the tank body can rotate, causing the solution in the tank body to shake and fully mix the solution in the tank body, thereby allowing the mercaptans in the liquefied gas to fully react with the solution in the tank body, thereby improving the mercaptans removal effect of the liquefied gas.

[0004] However, in actual use, this structure can only be shaken left and right, and the shaking speed cannot be too high, which reduces the mixing effect and leads to low mercaptan removal efficiency. Therefore, a separation tank for removing mercaptan from coking liquefied gas is proposed. Utility Model Content

[0005] In order to overcome the above-mentioned defects of the prior art, the utility model provides a separation tank for removing mercaptans from coking liquefied gas to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a separation tank for removing mercaptans from coking liquefied gas, comprising a tank body, a top cover installed on the top of the tank body, an air inlet pipe provided on the top cover, an exhaust pipe provided on one side of the air inlet pipe, a bottom plate installed at the bottom end of the tank body, a roller installed at the bottom end of the bottom plate, a support plate supported at the bottom of the roller, a support leg provided at the bottom end of the support plate, a motor connected to the bottom plate installed at the bottom of the support plate, a diverter pipe installed at the bottom end of the air inlet pipe, a branch pipe installed at the bottom end of the diverter pipe, a baffle provided at the bottom end of the tank body, and strip-shaped through holes evenly opened on the baffle.

[0007] Preferably, a plurality of rollers are provided and arranged in a ring shape.

[0008] Preferably, a plurality of branch pipes are provided, and each branch pipe is connected to the shunt pipe.

[0009] Preferably, the motor is connected to a rotating rod, and the top end of the rotating rod is connected to the middle part of the bottom end of the base plate.

[0010] Preferably, an axial hole is opened on the support plate, and a bearing is installed in the axial hole, and the rotating rod is connected to the bearing.

[0011] Preferably, a shaft sealing disk is installed in the middle of the top cover, and the shaft sealing disk is rotatably connected to the top cover.

[0012] The technical effects and advantages of this utility model are:

[0013] 1. The motor drives the bottom plate to rotate, and the tank body can rotate quickly and smoothly under the support of the roller, so that the baffle also rotates with the tank body. The air inlet pipe and the exhaust pipe are connected to the shaft sealing disk. Since the air inlet pipe is connected to the gas transmission end and is fixed and does not rotate, it can remain stationary. Therefore, when the liquefied gas is input into the tank body by the air inlet pipe, the liquefied gas is dispersed by the branch pipe at the bottom of the diverter pipe, thereby improving the dispersion of the liquefied gas in the reaction solution. When the liquefied gas is discharged from the branch pipe, it hits the rotating baffle, and the liquefied gas discharged from the branch pipe is cut off by the rotating strip through hole. Under the stirring of the reaction solution by the diverter pipe, the reaction solution can be further mixed with the liquefied gas, thereby improving the mercaptan removal effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0015] Figure 2 This is a schematic diagram of the internal structure of the tank body of the present invention.

[0016] Figure 3 This is a schematic diagram of the intake pipe connection structure of the utility model.

[0017] Figure 4 This is a schematic diagram of the tank bottom connection structure of the utility model.

[0018] The accompanying drawings are marked as follows: 1. tank body; 2. top cover; 3. air inlet pipe; 4. exhaust pipe; 5. bottom plate; 6. roller; 7. support plate; 8. support leg; 9. motor; 10. shaft sealing disk; 11. diverter pipe; 12. branch pipe; 13. baffle; 14. rotating rod. DETAILED DESCRIPTION

[0019] 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.

[0020] As attached Figure 1-4 The separation tank for removing mercaptans from coking liquefied gas shown in the figure includes a tank body 1, a top cover 2 is installed on the top of the tank body 1, an air inlet pipe 3 is provided on the top cover 2, an exhaust pipe 4 is provided on one side of the air inlet pipe 3, a bottom plate 5 is installed at the bottom end of the tank body 1, a roller 6 is installed at the bottom end of the bottom plate 5, a support plate 7 is supported at the bottom of the roller 6, a support leg 8 is provided at the bottom end of the support plate 7, a motor 9 connected to the bottom plate 5 is installed at the bottom of the support plate 7, a diverter pipe 11 is installed at the bottom end of the air inlet pipe 3, a branch pipe 12 is installed at the bottom end of the diverter pipe 11, a baffle 13 is provided at the bottom end of the tank body 1, and strip-shaped through holes are evenly opened on the baffle 13.

[0021] During specific implementation, the motor 9 drives the bottom plate 5 to rotate, and the tank body 1 can rotate quickly and smoothly under the support of the roller 6, so that the baffle 13 also rotates with the tank body 1, and the air inlet pipe 3 and the exhaust pipe 4 are connected to the shaft sealing disk 10. Since the air inlet pipe 3 is connected to the gas transmission end and is fixed and does not rotate, it can remain stationary. Therefore, when the liquefied gas is input into the tank body 1 by the air inlet pipe 3, the branch pipe 12 at the bottom end of the branch pipe 11 disperses the liquefied gas, thereby improving the dispersion of the liquefied gas in the reaction solution, and when the liquefied gas is discharged from the branch pipe 12, it hits the rotating baffle 13, and the liquefied gas discharged from the branch pipe 12 is cut off by the rotating bar-shaped through hole, and under the stirring of the reaction solution by the branch pipe 11, the reaction solution can be further mixed with the liquefied gas, thereby improving the thiol removal effect.

[0022] There are multiple rollers 6 arranged in a ring shape, so that when the tank body 1 rotates, the tank body 1 rotates more smoothly under the support of the rollers 6, avoiding sliding friction between the bottom of the tank body 1 and the support plate 7, thereby improving the rotation effect and improving the mixing effect of the liquefied gas and the reaction solution.

[0023] There are multiple branch pipes 12, and each branch pipe 12 is connected to the branch pipe 11, so that the gas entering the branch pipe 11 through the air inlet pipe 3 is discharged from each branch pipe 12, thereby reducing the aggregation effect of the liquefied gas entering the reaction solution and improving the dispersion, thereby further improving the mixing effect between the branch pipe 11 and the reaction solution, so that the thiol can react with the reaction solution more thoroughly.

[0024] The motor 9 is connected to a rotating rod 14 , and the top end of the rotating rod 14 is connected to the middle of the bottom end of the base plate 5 .

[0025] The support plate 7 is provided with an axial hole, and a bearing is installed in the axial hole, and the rotating rod 14 is connected to the bearing.

[0026] In specific implementation, the operation of the motor 9 can enable the rotating rod 14 to drive the base plate 5 to rotate, and under the connection between the bearing and the support plate 7, the friction between the rotating rod 14 and the shaft hole can be reduced, thereby increasing the service life of the rotating rod 14.

[0027] A shaft sealing disk 10 is installed in the middle of the top cover 2. The shaft sealing disk 10 is rotatably connected to the top cover 2 and is used to seal the top cover 2. It also ensures that when the tank body 1 rotates, the air inlet pipe 3, the exhaust pipe 4 and the shaft sealing disk 10 can remain relatively still, thereby improving the stability of the structure.

[0028] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A separation tank for removing mercaptans from coking liquefied gas, comprising a tank body (1), characterized in that: The top of the tank body (1) is provided with a top cover (2), an air intake pipe (3) is provided on the top cover (2), an exhaust pipe (4) is provided on one side of the air intake pipe (3), a bottom plate (5) is provided at the bottom of the tank body (1), a roller (6) is provided at the bottom of the bottom plate (5), a support plate (7) is supported at the bottom of the roller (6), a support leg (8) is provided at the bottom of the support plate (7), a motor (9) connected to the bottom plate (5) is provided at the bottom of the support plate (7), a diverter pipe (11) is provided at the bottom of the air intake pipe (3), a diverter pipe (12) is provided at the bottom of the diverter pipe (11), a baffle (13) is provided at the bottom of the interior of the tank body (1), and strip-shaped through holes are evenly opened on the baffle (13).

2. The separation tank for removing mercaptans from coking liquefied gas according to claim 1, characterized in that: A plurality of rollers (6) are provided and arranged in a ring shape.

3. The separation tank for removing mercaptans from coking liquefied gas according to claim 2, characterized in that: A plurality of branch pipes (12) are provided, and each branch pipe (12) is communicated with the diversion pipe (11).

4. The separation tank for removing mercaptans from coking liquefied gas according to claim 3, characterized in that: The motor (9) is connected to a rotating rod (14), and the top end of the rotating rod (14) is connected to the middle portion of the bottom end of the base plate (5).

5. The separation tank for removing mercaptans from coking liquefied gas according to claim 4, characterized in that: An axial hole is provided on the support plate (7), and a bearing is installed in the axial hole, and the rotating rod (14) is connected to the bearing.

6. The separation tank for removing mercaptans from coking liquefied gas according to claim 5, characterized in that: A shaft sealing disc (10) is installed in the middle of the top cover (2), and the shaft sealing disc (10) is rotatably connected to the top cover (2).

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