Gas purification device for petrochemical fuel gas

Abstract

The utility model provides a gas purification device for petrochemical fuel gas, which belongs to the technical field of fuel gas filtration and purification and comprises an outer shell. The shell cover is fixed at the top of the outer shell through a flange; the self-cleaning filtering and purifying assembly is arranged in the outer shell; the self-cleaning filtering and purifying assembly comprises a filtering inner rotating cylinder, a filtering outer rotating cylinder and a filtering outer rotating cylinder, wherein the filtering inner rotating cylinder rotates at the central position of the bottom in the outer shell; the filtering holes are formed in the outer side wall of the filtering inner rotary drum; the barrel cover is fixed at the top of the filtering inner rotating barrel; the central column is welded at the central position of the bottom in the filtering inner rotary drum; the pressure of fuel gas flowing in a pipeline is used for pushing the filtering inner rotating drum to rotate in the outer shell, solid particles filtered and blocked on the outer side of the filtering inner rotating drum are scraped by the inner side wall of the outer shell, filtering holes in the filtering inner rotating drum are prevented from being blocked, the flowing rate of the fuel gas is guaranteed, and the number of times of cleaning and replacing the filtering inner rotating drum is reduced.

Description

Technical Field

[0001] This utility model belongs to the field of gas filtration and purification technology, specifically relating to a gas purification device for petrochemical fuels. Background Technology

[0002] Petrochemical fuel gas refers to the gases produced during the petrochemical production process. Petrochemical fuel gas can include a variety of gases, such as ethylene, propylene, hydrogen, methane, carbon monoxide, carbon dioxide, and nitrogen. These gases are usually used as energy raw materials or intermediates in the petrochemical production process.

[0003] In the petrochemical production process, solid particulate matter often exists in the gas. This particulate matter can accumulate and block narrow parts such as pipes, valves, and nozzles, affecting the flow and transmission of gas. In order to protect the normal operation of petrochemical equipment and systems, extend equipment life, and improve production efficiency and safety, it is necessary to perform particulate filtration on petrochemical gas to remove solid particulate matter and ensure the purity and quality of the gas.

[0004] Existing gas particulate matter purifiers filter particles by fixing a particulate filter screen inside the housing. While this method is effective, the filter screen gradually becomes clogged after a period of time, requiring disassembly for cleaning or replacement. This necessitates repeated disassembly and reassembly of the particulate filter screen, increasing the workload for workers and requiring shutdowns for cleaning, which also affects gas delivery.

[0005] Therefore, a gas purification device for petrochemical fuels is proposed. Summary of the Invention

[0006] This invention provides a gas purification device for petrochemical fuels, the purpose of which is to solve the problems mentioned above.

[0007] This utility model provides a gas purification device for petrochemical fuel gas, including an outer shell; a cover fixed to the top of the outer shell via a flange; and a self-cleaning filter purification assembly disposed inside the outer shell. The self-cleaning filter purification assembly includes: an inner rotating filter cylinder rotatably positioned at the center of the bottom inside the outer shell; a filter hole formed on the outer wall of the inner rotating filter cylinder; a cylinder cover fixed to the top of the inner rotating filter cylinder; a central column welded to the center of the bottom inside the inner rotating filter cylinder; a baffle plate welded between the outer wall of the central column and the inner wall of the inner rotating filter cylinder; and a gas inlet and a gas outlet penetrating the outer wall of the outer shell, the gas inlet being located to one side of the gas outlet, and the gas inlet and gas outlet being eccentrically offset from the central column.

[0008] A gas purification device for petrochemical fuel gas further includes a first mounting platform fixedly disposed on the outer wall of the outer casing near the outer side of the gas inlet; an inlet pipe fixedly disposed on the outer wall of the first mounting platform; a second mounting platform fixedly disposed on the outer wall of the outer casing near the outer side of the gas outlet; and an outlet pipe fixedly disposed on the outer wall of the second mounting platform.

[0009] A gas purification device for petrochemical fuel gas further includes a fuel gas solid particulate discharge port located at the bottom of the inner wall of the fuel gas inlet; a fuel gas solid particulate collection box fixed to the bottom of the outer shell by bolts; a collection groove located at the top of the fuel gas solid particulate collection box; and a connecting channel located inside the outer shell near the fuel gas solid particulate discharge port and the collection groove.

[0010] Furthermore, the top of the cylinder cover is provided with a shaft that is rotatably connected to the shell cover;

[0011] By adopting the above technical solution, the stability of the inner filter cylinder rotating within the outer shell is ensured.

[0012] Furthermore, a total of five diaphragm plates are provided, and the five diaphragm plates are axially and equally spaced on the outer wall of the central column;

[0013] By adopting the above technical solution, an impeller structure can be formed by five baffles, thereby generating thrust during the gas flow to make the inner filter cylinder rotate.

[0014] Furthermore, the intake pipe is connected to the gas inlet, and the outlet pipe is connected to the gas outlet;

[0015] By adopting the above technical solution, it can be ensured that the gas passes through the intake pipe into the gas inlet, and then into the interior of the outer casing, and that the gas passes through the gas outlet and the exhaust pipe in sequence before being discharged.

[0016] Furthermore, both the gas-fired solid particulate matter discharge outlet and the collection tank are connected to the docking communication channel;

[0017] By adopting the above technical solution, it is ensured that the gas solid particles scraped off by the inner wall of the outer shell during the rotation of the inner rotating cylinder can pass through the gas solid particle discharge port into the docking communication channel and fall into the collection tank along the docking communication channel, thereby realizing the collection of gas solid particles.

[0018] Furthermore, the inner filter cylinder adopts a metal cylinder structure, and the outer wall of the inner filter cylinder is precisely fitted to the inner wall of the outer shell.

[0019] By adopting the above technical solution, the inner filter cylinder adopts a metal cylinder structure, and the outer side wall of the inner filter cylinder is precisely fitted to the inner side wall of the outer shell. The metal cylinder structure can ensure the structural strength of the inner filter cylinder, and the precisely fitted matching structure can minimize the gap between the inner filter cylinder and the outer shell, preventing gas solid particles from passing through the gap.

[0020] The beneficial effects of this utility model are as follows:

[0021] This invention utilizes the pressure of gas flowing in the pipeline to drive the inner filter cylinder to rotate within the outer shell. Through the interaction between the rotating inner filter cylinder and the inner wall of the outer shell, the inner wall scrapes away solid particles blocked by the filter on the outside of the inner filter cylinder, preventing clogging of the filter holes. This ensures that the contact area between the inner filter cylinder and the gas inlet maintains high gas permeability, guaranteeing the gas flow rate and reducing the frequency of cleaning and replacement of the inner filter cylinder. Furthermore, the interconnected design of the gas solid particle outlet, connecting channel, and collection tank allows for the separate collection of gas solid particles, preventing their accumulation at the gas inlet and subsequent blockage. This further reduces the frequency of cleaning and replacement of the inner filter cylinder, thereby reducing downtime and ensuring the delivery of purified gas.

[0022] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of this invention can be realized and obtained by means of the structures particularly pointed out in the description and the drawings. Attached Figure Description

[0023] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0024] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model;

[0025] Figure 2 This is an exploded view of an embodiment of the present invention;

[0026] Figure 3 This is a schematic diagram of the outer shell structure of an embodiment of the present utility model;

[0027] Figure 4 This is a schematic diagram showing the combination of the gas inlet and the gas solid particulate collection box in an embodiment of the present invention.

[0028] Figure 5 This is a schematic diagram showing the installation and assembly of the outer shell and the gas-fired solid particulate matter collection box according to an embodiment of the present invention;

[0029] Reference numerals: 1. Outer shell; 2. Shell cover; 3. Self-cleaning filter purification assembly; 31. Inner filter cylinder; 32. Filter hole; 33. Cylinder cover; 34. Central column; 35. Baffle plate; 4. Gas inlet; 5. Gas outlet; 6. Mounting platform one; 7. Inlet pipe; 8. Mounting platform two; 9. Outlet pipe; 10. Gas solid particulate matter discharge port; 11. Gas solid particulate matter collection box; 12. Collection tank; 13. Connecting channel. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. The same reference numerals in the drawings represent the same components. It should be noted that the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the described embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0031] Reference Figure 1-3This utility model provides a gas purification device for petrochemical fuels, including an outer shell 1. A shell cover 2 is bolted to the top of the outer shell 1. An inner filter cylinder 31 from a self-cleaning filter purification assembly 3 is rotatably connected to the center of the bottom of the outer shell 1. The inner filter cylinder 31 has a metal cylindrical structure, and its outer sidewall is precisely fitted to the inner sidewall of the outer shell 1. The metal cylindrical structure ensures the structural strength of the inner filter cylinder 31, and the precisely fitted structure minimizes the gap between the inner filter cylinder 31 and the outer shell 1, preventing solid particles from passing through. Filter holes 32 are provided on the outer sidewall of the inner filter cylinder 31. A cylinder cover 33 is fixedly installed on the top of the inner filter cylinder 31. A shaft rotatably connected to the top of the cylinder cover 33 and the shell cover 2 ensures that the inner filter cylinder 31 rotates within the outer shell 1. To ensure dynamic stability, a central column 34 is welded to the center of the bottom of the inner rotating cylinder 31. A baffle plate 35 is welded between the outer wall of the central column 34 and the inner wall of the inner rotating cylinder 31. Five baffle plates 35 are provided in total, and the five baffle plates 35 are axially and equally spaced on the outer wall of the central column 34. The five baffle plates 35 can form an impeller structure, so that the thrust generated during the gas flow causes the inner rotating cylinder 31 to rotate. A gas inlet 4 and a gas outlet 5 are provided on the outer wall of the outer shell 1. The gas inlet 4 is located on one side of the gas outlet 5, and the gas inlet 4 and the gas outlet 5 are located on the same axis. The gas inlet 4 and the gas outlet 5 are misaligned with the central column 34, and the gas inlet 4 and the gas outlet 5 are located at the eccentric position of the axial trajectory of the inner rotating cylinder 31. The gas thrust can be used to drive the inner rotating cylinder 31 to rotate inside the outer shell 1.

[0032] The specific implementation method is as follows: In use, the gas inlet 4 and gas outlet 5 are respectively connected to two sections of petrochemical gas transmission pipelines. The two sections of petrochemical gas transmission pipelines are connected through the outer shell 1. At this time, the gas in the pipeline enters the interior of the outer shell 1 through the gas inlet 4. The gas is blown towards the inner rotating cylinder 31 of the filter. The filter holes 32 filter the solid particles present in the gas and block them on the outside of the inner rotating cylinder 31 of the filter. Since the gas is blown eccentrically towards the inner rotating cylinder 31 of the filter, the gas passes through the filter holes 32 and enters the interior of the inner rotating cylinder 31 of the filter. Under the action of gas pressure, the gas pushes the filter... The inner rotating cylinder 31 rotates inside the outer shell 1, causing the filtered gas to be discharged through the gas outlet 5. At this time, the inner rotating cylinder 31 is in a rotating state. Since the outer side wall of the inner rotating cylinder 31 is precisely attached to the inner side wall of the outer shell 1, the inner side wall of the outer shell 1 scrapes away the solid particles blocked on the outside of the inner rotating cylinder 31, preventing the filter holes 32 on the inner rotating cylinder 31 from becoming blocked. This ensures that the contact part between the inner rotating cylinder 31 and the gas inlet 4 is always in a state of high gas permeability, ensuring the gas flow rate, reducing the number of times the inner rotating cylinder 31 needs to be cleaned and replaced, and achieving gas filtration and purification.

[0033] In a further preferred embodiment of this utility model, such as Figure 1-5 As shown, the system includes an outer casing 1. A mounting platform 6 is fixedly installed on the outer wall of the outer casing 1 near the outer side of the gas inlet 4. An inlet pipe 7 is fixedly installed on the center of the outer wall of the mounting platform 6 on the side away from the outer casing 1. The inlet pipe 7 is connected to the gas inlet 4, ensuring that gas passes through the inlet pipe 7 and enters the gas inlet 4, thus reaching the interior of the outer casing 1. A mounting platform 8 is fixedly installed on the outer wall of the outer casing 1 near the outer side of the gas outlet 5. An outlet pipe 9 is fixedly installed on the center of the outer wall of the mounting platform 8 on the side away from the outer casing 1. The outlet pipe 9 is connected to the gas outlet 5, allowing gas to pass through the gas outlet 5 and the outlet pipe 9 sequentially for discharge. A gas solid particulate discharge port is located at the bottom of the inner wall of the gas inlet 4. At the outlet 10, near the bottom of the outer shell 1, close to the gas solid particulate discharge outlet 10, a gas solid particulate collection box 11 is fixedly connected by bolts. The top of the gas solid particulate collection box 11 has a collection groove 12. Inside the outer shell 1, near the gas solid particulate discharge outlet 10 and the collection groove 12, a connecting channel 13 is provided. Both the gas solid particulate discharge outlet 10 and the collection groove 12 are connected to the connecting channel 13, ensuring that the gas solid particulates scraped off by the inner wall of the outer shell 1 during the rotation of the inner filter drum 31 can pass through the gas solid particulate discharge outlet 10 into the connecting channel 13 and fall down along the connecting channel 13 to the collection groove 12, thereby achieving the collection of gas solid particulates.

[0034] The specific implementation method is as follows: In use, the inlet pipe 7 and the outlet pipe 9 are fixed to two sections of petrochemical gas transmission pipelines to realize the flow of gas. When the filter inner rotating cylinder 31 in the self-cleaning filter purification component 3 rotates under the push of gas, the gas solid particles scraped and dropped by the inner side wall of the outer shell 1 pass through the gas solid particle outlet 10 and enter the docking and connecting channel 13. Under the action of the gas solid particles' own gravity, the gas solid particles fall into the collection tank 12 and are collected by the gas solid particle collection box 11, avoiding the problem of gas solid particles accumulating at the gas inlet 4 and causing subsequent blockage, and further reducing the number of times the filter inner rotating cylinder 31 needs to be cleaned and replaced.

[0035] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A gas purification device for petrochemical fuels, characterized in that: Including the outer shell (1); A cover (2) fixed to the top of the outer casing (1) by a flange; and A self-cleaning filter purification component (3) is provided inside the outer shell (1); The self-cleaning filter purification component (3) includes: The inner filter cylinder (31) rotates at the center of the bottom inside the outer shell (1). Filter holes (32) are formed on the outer wall of the inner rotating filter cylinder (31); and A cylinder cover (33) is fixed to the top of the inner rotating filter cylinder (31). A central column (34) is welded to the bottom center of the inner rotating cylinder (31) of the filter. A baffle plate (35) is welded between the outer wall of the central column (34) and the inner wall of the filter inner rotating cylinder (31). A gas inlet (4) and a gas outlet (5) are provided through the outer wall of the outer shell (1). The gas inlet (4) is located on one side of the gas outlet (5), and the gas inlet (4) and the gas outlet (5) are eccentrically offset from the central column (34).

2. The gas purification device for petrochemical fuel gas according to claim 1, characterized in that: It also includes a mounting platform (6) fixedly installed on the outer side wall of the outer shell (1) near the outer side of the gas inlet (4); An air inlet pipe (7) is fixedly installed on the outer side wall of the mounting platform (6); Mounting platform 2 (8) is fixedly installed on the outer side wall of the outer shell (1) near the outer side of the gas outlet (5); An air outlet pipe (9) is fixedly installed on the outer side wall of the mounting platform (8).

3. The gas purification device for petrochemical fuel gas according to claim 1, characterized in that: It also includes a gas solid particulate discharge port (10) located at the bottom of the inner side wall of the gas inlet (4); The gas solid particulate matter collection box (11) is fixed to the bottom of the outer shell (1) by bolts. A collection trough (12) is provided on the top of the gas solid particulate matter collection box (11); A connecting channel (13) is provided inside the outer shell (1) near the gas solid particulate discharge port (10) and the collection tank (12).

4. The gas purification device for petrochemical fuel gas according to claim 1, characterized in that: The top of the cylinder cover (33) is provided with a shaft that is rotatably connected to the shell cover (2).

5. A gas purification device for petrochemical fuel gas according to claim 1, characterized in that: There are five leaf septa (35) in total, and the five leaf septa (35) are arranged axially at equal intervals on the outer wall of the central column (34).

6. A gas purification device for petrochemical fuel gas according to claim 2, characterized in that: The air inlet pipe (7) is connected to the gas inlet (4), and the air outlet pipe (9) is connected to the gas outlet (5).

7. A gas purification device for petrochemical fuel gas according to claim 3, characterized in that: The gas solid particulate discharge port (10) and the collection tank (12) are both connected to the docking communication channel (13).

8. A gas purification device for petrochemical fuel gas according to claim 1, characterized in that: The inner filter cylinder (31) adopts a metal cylinder structure, and the outer side wall of the inner filter cylinder (31) is precisely fitted to the inner side wall of the outer shell (1).

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