A liquid phase catalytic oxidation desulfurization process deep desulfurization device

Abstract

The application is suitable for the technical field of desulfurization equipment, and provides a liquid-phase catalytic oxidation desulfurization process deep desulfurization device; the device comprises a regeneration tank, a first liquid level regulator, a through tank, a first through sleeve, a first cover plate, a plurality of first support columns, a middle cover plate, a flow guide mechanism, a second liquid level regulator, and a driving component.

Description

Technical Field

[0001] This invention relates to the field of desulfurization equipment technology, specifically a deep desulfurization device using a liquid-phase catalytic oxidation desulfurization process. Background Technology

[0002] Coal gas from the main coke oven gas pipe of the coking plant enters the lower part of the desulfurization section of the desulfurization regeneration tower. It then flows counter-currently upwards along the desulfurization section, contacting the desulfurization liquid sprayed at the top for a liquid-phase catalytic oxidation chemical absorption process, absorbing H2S from the coal gas into the desulfurization liquid. To maintain a certain catalyst concentration and minimize its consumption, a facility for continuous small-scale catalyst replenishment is used, with the catalyst tank and alkali addition tank shared. After absorbing H2S, the desulfurization liquid is pumped to the top of the desulfurization regeneration tower via a bottom gas liquid seal facility and a solution circulation pump. It then contacts air through a self-priming injector for oxidation regeneration. The regenerated solution flows by gravity to the top of the desulfurization section via a level regulator, contacting the coal gas counter-currently for reuse. The level regulator primarily controls the sulfur foam height in the regeneration tank to prevent overflow, thus improving the desulfurization liquid regeneration effect. In existing technology, the inner cylinder of the level regulator remains in the lowest adjustment position for extended periods during operation, and sulfur paste in the regeneration tank causes caking and blockage between the inner and outer cylinders of the level regulator. When the amount of sulfur foam generated is small, it cannot overflow into the sulfur foam drain pipe. When the amount of sulfur foam generated is large, the sulfur foam overflows into the regeneration tank, causing pollution accidents and resulting in poor desulfurization effect. Summary of the Invention

[0003] The purpose of this invention is to provide a deep desulfurization device for a liquid-phase catalytic oxidation desulfurization process to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution:

[0005] A deep desulfurization device for a liquid-phase catalytic oxidation desulfurization process includes: a regeneration tank;

[0006] The first liquid level regulator is slidably installed in the passageway on the regeneration tank.

[0007] The first liquid level regulator includes a first through sleeve and a first cover plate. The first cover plate and the first through sleeve are connected by a plurality of first support columns. A detachable intermediate cover plate is provided at a notch at the upper end of the first cover plate.

[0008] A flow guiding mechanism is located directly above the first liquid level regulator and is used to guide the foam discharged from the first liquid level regulator to be discharged.

[0009] The second liquid level regulator is slidably disposed inside the first liquid level regulator and is slidably disposed through the notch on the first cover plate;

[0010] A driving component is used to connect to either the first liquid level regulator or the second liquid level regulator, and to drive either the first liquid level regulator or the second liquid level regulator to move up or down.

[0011] As a further embodiment of the present invention: the driving component includes a mounting base, a lifting motor and a first lead screw; the mounting base is fixedly mounted on the regeneration tank, two lifting motors are mounted on the mounting base, and the first lead screw is detachably disposed at the output end of the lifting motor, and the first lead screw passes through a first threaded hole on the intermediate cover plate.

[0012] As a further embodiment of the present invention: the intermediate cover plate is mounted on the first cover plate by bolts.

[0013] As a further embodiment of the present invention: the flow guiding mechanism includes a receiving ring fixedly installed on the regeneration tank, and a discharge pipe is provided on one side of the receiving ring.

[0014] As a further embodiment of the present invention: the second liquid level regulator includes a second through sleeve and a second cover plate, the second cover plate and the second through sleeve are connected by a plurality of second support columns, and the second cover plate is also provided with two second threaded holes.

[0015] As a further embodiment of the present invention: the driving component further includes a second lead screw, which is used to be installed at the output end of the lifting motor, and the lifting motor is mounted on the mounting base in an adjustable position; the end of the second lead screw away from the lifting motor passes through a second threaded hole.

[0016] As a further embodiment of the present invention: the lifting motor is mounted on the mounting base by bolts, and the mounting base is provided with multiple sets of bolt holes for mounting the lifting motor.

[0017] As a further embodiment of the present invention: the lifting motor and the first lead screw are connected by a flange.

[0018] As a further aspect of the present invention, the first liquid level regulator and the second liquid level regulator are made of stainless steel.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows: By providing a notch at the top of the first liquid level regulator, it is convenient to install the second liquid level regulator inside the first liquid level regulator when the first liquid level regulator is stuck inside the regeneration tank. Then, the drive mechanism moves the second liquid level regulator up and down to achieve material discharge; this solves the problem of jamming in the prior art. The present invention restores the function of regulating the liquid level in the regeneration tank by installing the second liquid level regulator without ignition, so that sulfur foam can overflow into the sulfur foam lower pipe at any time, restoring the original desulfurization effect. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of a deep desulfurization device for a liquid-phase catalytic oxidation desulfurization process according to the present invention. Figure 1 .

[0021] Figure 2 This is a schematic diagram of the structure of a deep desulfurization device for a liquid-phase catalytic oxidation desulfurization process according to the present invention. Figure 2 .

[0022] Figure 3 This is a schematic diagram of the first liquid level regulator in a deep desulfurization device of a liquid-phase catalytic oxidation desulfurization process according to the present invention.

[0023] Figure 4 This is a schematic diagram of the installation of the second liquid level regulator in a deep desulfurization device of a liquid-phase catalytic oxidation desulfurization process according to the present invention.

[0024] In the diagram: 1-Regeneration tank, 2-First liquid level regulator, 3-Mounting base, 4-Lifting motor, 5-First lead screw, 6-Flow guiding mechanism, 7-Second liquid level regulator, 8-Second lead screw, 21-First through sleeve, 22-First cover plate, 23-First support column, 24-Intermediate cover plate, 25-First threaded hole, 71-Second through sleeve, 72-Second cover plate, 73-Second support column, 74-Second threaded hole. Detailed Implementation

[0025] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] See Figures 1-4 As shown, Figure 1 This is a schematic diagram of the structure of a deep desulfurization device for a liquid-phase catalytic oxidation desulfurization process according to the present invention. Figure 1 ; Figure 2 This is a schematic diagram of the structure of a deep desulfurization device for a liquid-phase catalytic oxidation desulfurization process according to the present invention. Figure 2 ; Figure 3 This is a schematic diagram of the structure of the first liquid level regulator in a deep desulfurization device of a liquid-phase catalytic oxidation desulfurization process according to the present invention; Figure 4This is a schematic diagram of the installation of the second liquid level regulator in a deep desulfurization device for a liquid-phase catalytic oxidation desulfurization process according to the present invention. In existing technology, the inner cylinder of the liquid level regulator remains inactive at the lowest adjustment position for extended periods during operation, causing sulfur paste in the regeneration tank to cake and obstruct the gap between the inner and outer cylinders of the regulator. When the amount of sulfur foam generated is small, it cannot overflow into the sulfur foam drain pipe; when the amount of sulfur foam generated is large, it overflows into the regeneration tank, causing pollution and resulting in poor desulfurization efficiency. To solve this technical problem, a deep desulfurization device for a liquid-phase catalytic oxidation desulfurization process is proposed.

[0027] The following detailed description of some embodiments of this application is provided in conjunction with the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0028] Please see Figures 1-4 This invention provides a structural diagram of a deep desulfurization device for a liquid-phase catalytic oxidation desulfurization process. The device includes: a regeneration tank 1, a first liquid level regulator 2, a flow guiding mechanism 6, a second liquid level regulator 7, and a driving component. The first liquid level regulator 2 is slidably disposed in a passageway on the regeneration tank 1. The flow guiding mechanism 6 is disposed directly above the first liquid level regulator 2 and is used to guide the foam discharged from the first liquid level regulator 2. The first liquid level regulator 2 includes a first passage sleeve 21 and a first cover plate 22, which is connected to the first passage sleeve 21 by a plurality of first support columns 23. A detachable intermediate cover plate 24 is provided at a notch at the upper end of the first cover plate 22. The second liquid level regulator 7 is slidably disposed inside the first liquid level regulator 2 and can slide through the notch on the first cover plate 22. The driving component is used to connect with either the first liquid level regulator 2 or the second liquid level regulator 7 and to drive either the first liquid level regulator 2 or the second liquid level regulator 7 to move up and down.

[0029] Specifically, this invention provides a notch at the top of the first liquid level regulator 2, allowing the installation of a second liquid level regulator 7 inside the first liquid level regulator 2 when it becomes stuck inside the regeneration tank 1. The drive mechanism then moves the second liquid level regulator 7 up and down to discharge the material, thus solving the problem of sticking in existing technologies. This invention restores the function of regulating the liquid level in the regeneration tank 1 by installing the second liquid level regulator 7 without ignition, allowing sulfur foam to overflow into the sulfur foam drain pipe at any time, restoring the original desulfurization effect.

[0030] Furthermore, to drive the first liquid level regulator 2 to rise and fall, the driving component includes a mounting base 3, a lifting motor 4, and a first lead screw 5. The mounting base 3 is fixedly mounted on the regeneration tank 1. Two lifting motors 4 are mounted on the mounting base 3. The first lead screw 5 is detachably mounted at the output end of the lifting motor 4, and passes through a first threaded hole 25 on the intermediate cover plate 24. Thus, when the two lifting motors 4 rotate, they drive the first lead screw 5 to rotate, and the first lead screw 5 drives the intermediate cover plate 24 through the first threaded hole 25, causing the first liquid level regulator 2 to rise and fall.

[0031] In a preferred embodiment of the present invention, the intermediate cover plate 24 can be bolted to the first cover plate 22, which facilitates the disassembly of the intermediate cover plate 24. When the first liquid level regulator 2 is stuck, the intermediate cover plate 24 is disassembled and the second lead screw 8 is removed from the lifting motor 4, which facilitates the installation of the second liquid level regulator 7. This solves the problem of the first liquid level regulator 2 getting stuck and blocked.

[0032] In a preferred embodiment of the present invention, the flow guiding mechanism 6 includes a receiving ring 61 fixedly installed on the regeneration tank 1. A discharge pipe 62 is provided on one side of the receiving ring 61. When the upper edge of the first pass sleeve 21 on the first liquid level regulator 2 rises above the position of the receiving ring 61, the foam enters the receiving ring 61 through the gap between the first cover plate 22 and the first pass sleeve 21, and is then discharged through the discharge pipe 62.

[0033] In a preferred embodiment of the present invention, the second liquid level regulator 7 includes a second through sleeve 71 and a second cover plate 72. The second cover plate 72 and the second through sleeve 71 are connected by a plurality of second support columns 73. The second cover plate 72 is also provided with two second threaded holes 74.

[0034] In a preferred embodiment of the present invention, the driving component further includes a second lead screw 8, which is mounted on the output end of the lifting motor 4, the lifting motor 4 being adjustablely mounted on the mounting base 3; the end of the second lead screw 8 away from the lifting motor 4 passes through the second threaded hole 74. This provides power for the up-and-down movement of the second liquid level regulator 7.

[0035] Specifically, the lifting motor 4 is mounted on the mounting base 3 by bolts. The mounting base 3 is provided with multiple sets of bolt holes for mounting the lifting motor 4. By adjusting the installation of the lifting motor 4 in different sets of bolt holes, its position can be adjusted, so that the lifting motor 4 can drive the second liquid level regulator 7 or the first liquid level regulator 2.

[0036] In a preferred embodiment of the present invention, the lifting motor 4 and the first lead screw 5 are connected by a flange, which facilitates the disassembly of the first lead screw 5 and makes it easy to disassemble the first liquid level regulator 2 when it is stuck.

[0037] In a preferred embodiment of the present invention, the lifting motor 4 and the second lead screw 8 are also connected by a flange, which facilitates their installation.

[0038] The first liquid level regulator 2 and the second liquid level regulator 7 are made of stainless steel. 304 stainless steel is preferred.

[0039] Specifically, the gap between the second liquid level regulator 7 and the first liquid level regulator 2 is 6mm.

[0040] Post-implementation results or expected results: Under the condition that the original gas operating parameters remain unchanged, the H2S content of the gas after the ammonia removal tower during the test period was 35-50 mg / Nm³. 3 Evidence: This invention restores the original desulfurization effect and improves the situation of excessive emissions.

[0041] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0042] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0043] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0044] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A liquid phase catalytic oxidative desulfurization process deep desulfurization device, characterized in that, include: Regeneration tank (1); The first liquid level regulator (2) is slidably installed in the passageway on the regeneration tank (1); The first liquid level regulator (2) includes a first pass sleeve (21) and a first cover plate (22). The first cover plate (22) and the first pass sleeve (21) are connected by a plurality of first support columns (23). A detachable intermediate cover plate (24) is provided at the upper notch of the first cover plate (22). The flow guiding mechanism (6) is located directly above the first liquid level regulator (2) and is used to guide the foam discharged from the first liquid level regulator (2) to be discharged. The second liquid level regulator (7) is slidably disposed inside the first liquid level regulator (2) and is slidably disposed through the notch on the first cover plate (22); A driving component is used to connect with either the first liquid level regulator (2) or the second liquid level regulator (7) to drive either the first liquid level regulator (2) or the second liquid level regulator (7) to move up or down. The drive component includes a mounting base (3), a lifting motor (4), and a first lead screw (5); the mounting base (3) is fixedly mounted on the regeneration tank (1), there are two lifting motors (4), the lifting motors (4) are mounted on the mounting base (3), and the first lead screw (5) is detachably mounted on the output end of the lifting motor (4), and the first lead screw (5) passes through the first threaded hole (25) on the intermediate cover plate (24); The second liquid level regulator (7) includes a second through sleeve (71) and a second cover plate (72). The second cover plate (72) and the second through sleeve (71) are connected by a plurality of second support columns (73). The second cover plate (72) is also provided with two second threaded holes (74). The drive component also includes a second lead screw (8), which is used to be installed at the output end of the lifting motor (4), and the lifting motor (4) is mounted on the mounting base (3) in an adjustable position; the end of the second lead screw (8) away from the lifting motor (4) passes through the second threaded hole (74).

2. The deep desulfurization device for liquid-phase catalytic oxidation desulfurization process according to claim 1, characterized in that, The intermediate cover plate (24) is bolted to the first cover plate (22).

3. The deep desulfurization device for liquid-phase catalytic oxidation desulfurization process according to claim 1, characterized in that, The flow guiding mechanism (6) includes a receiving ring (61) fixedly installed on the regeneration tank (1), and a discharge pipe (62) is provided on one side of the receiving ring (61).

4. The deep desulfurization device for liquid-phase catalytic oxidation desulfurization process according to claim 1, characterized in that, The lifting motor (4) is mounted on the mounting base (3) by bolts. The mounting base (3) is provided with multiple sets of bolt holes for mounting the lifting motor (4).

5. A deep desulfurization device for liquid-phase catalytic oxidation desulfurization process according to claim 4, characterized in that, The lifting motor (4) and the first lead screw (5) are connected by a flange.

6. The deep desulfurization device for liquid-phase catalytic oxidation desulfurization process according to claim 4, characterized in that, The lifting motor (4) and the second lead screw (8) are also connected by a flange.

7. A deep desulfurization device for liquid-phase catalytic oxidation desulfurization process according to any one of claims 1-6, characterized in that, The first liquid level regulator (2) and the second liquid level regulator (7) are made of stainless steel.

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