Coal gasification tail gas purification device

Abstract

The utility model relates to the technical field of purification devices, in particular to a coal gasification tail gas purification device which comprises a particulate matter purification box, a gas inlet pipe is arranged on the left side of the particulate matter purification box, a gas outlet pipe is arranged on the right side of the particulate matter purification box, and three filter screen plates are arranged in the particulate matter purification box. A self-cleaning assembly is arranged at the position, close to the right side of each filter screen plate, of the particulate matter purification box and comprises a motor, an output shaft of the motor penetrates through the rear side of the particulate matter purification box and is coaxially connected with a rotating rod, a plurality of annular fixing blocks are arranged on the outer wall of the rotating rod, and the annular fixing blocks are connected with rubber balls through connecting ropes. The coal gasification tail gas purification device is provided with the self-cleaning assembly, a motor is used for driving a rotating rod and an annular fixing block, a filter screen plate is knocked through a rubber ball, particulate matter accumulated on the surface of the filter screen plate is automatically cleaned, the manual maintenance requirement is lowered through the function, the cleaning frequency is reduced, and the usability and operation efficiency of equipment are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of purification devices, in particular to a coal gasification tail gas purification device. Background Art

[0002] Coal gasification is a process in which solid coal reacts with gases at high temperatures and under oxygen-deficient or limited oxygen conditions to convert it into synthesis gas (syngas). Syngas, primarily composed of carbon monoxide, hydrogen, and small amounts of other gases, is widely used in the chemical and energy sectors, becoming a key technological path for achieving clean coal utilization and resource diversification. However, in addition to the production of synthesis gas, the gasification process also produces a large amount of harmful exhaust gases. These exhaust gases contain a variety of environmental pollutants, such as hydrogen sulfide, nitrogen oxides, volatile organic compounds, and solid particulate matter. If discharged untreated, these harmful substances can cause serious atmospheric pollution, endanger human health, and hinder the achievement of sustainable development goals. Therefore, purifying the exhaust gas produced by coal gasification before discharge is a necessary measure to comply with environmental requirements and social responsibility.

[0003] During the coal gasification process, solid particulate matter (PM) in the exhaust gas is a significant issue. These PM primarily originate from coal ash, incompletely gasified pulverized coal, and carbon black and tar particles generated during the gasification process. These PM not only directly pollute the environment but can also cause blockage, corrosion, and wear on downstream equipment within the coal gasification unit (such as heat exchangers and catalytic reactors), further impacting the efficiency and safety of the entire gasification system. Therefore, the design and performance of the PM filtration structure within the exhaust gas purification system are crucial to ensuring a smooth coal gasification process.

[0004] Current coal gasification tail gas purification devices generally use physical or chemical methods to remove particulate matter. The common particulate matter filtering structures in these devices are prone to clogging after long-term operation, resulting in a significant reduction in treatment efficiency. This clogging is mainly due to the continuous accumulation of particulate matter on the filter medium, forming a filter layer, which increases the resistance to gas flow. At the same time, existing filtration systems often lack effective self-cleaning functions, resulting in operators needing to manually disassemble and clean them regularly. During the cleaning process, the purification device needs to be shut down for maintenance, which not only increases operating and maintenance costs, but also leads to a decrease in production efficiency. High-frequency cleaning and maintenance work will affect the overall working efficiency of the coal gasification tail gas purification device, thereby reducing the economic benefits of the gasification process. In view of this, we propose a coal gasification tail gas purification device. Utility Model Content

[0005] The purpose of the present utility model is to provide a coal gasification tail gas purification device to solve the problems raised in the above background technology.

[0006] To achieve the above objectives, the present invention provides the following technical solutions:

[0007] A coal gasification tail gas purification device includes a particulate matter purification box, which is a main component of the coal gasification tail gas purification device and is responsible for accommodating a filter screen plate and a self-cleaning component, and providing a space for purifying and processing the tail gas. An air inlet pipe is provided on the left side of the particulate matter purification box, which is connected to the tail gas outlet of the gasification device and introduces the tail gas containing pollutants into the particulate matter purification box for treatment. An air outlet pipe is provided on the right side of the particulate matter purification box, which discharges the purified tail gas out of the particulate matter purification box and is connected to a subsequent tail gas purification device. Three filter screen plates are arranged at equal intervals in the particulate matter purification box, which filter solid particulate matter in the tail gas through their pores to effectively remove solid harmful substances.

[0008] A self-cleaning component is provided on the particulate matter purification box and near the right side of each filter plate, which is used to automatically clean the particulate matter accumulated on the surface of the filter plate, maintain the filtration efficiency, and reduce the need for manual maintenance. The self-cleaning component includes a motor fixedly connected to the rear side of the particulate matter purification box. The motor is connected to an external power supply to work. The motor drives the rotating rod to rotate, providing power for the self-cleaning component. The output shaft of the motor passes through the rear side of the particulate matter purification box and is coaxially connected to the rotating rod. The outer wall of the rotating rod is provided with a plurality of annular solid blocks arranged equidistantly front and back. A connecting rope is provided on the annular solid block, and a rubber ball is provided at one end of the connecting rope away from the annular solid block. The motor drives the rotating rod to rotate, and the rotating rod drives the plurality of annular solid blocks to rotate, so that the annular solid block drives the connecting rope to move, causes the connecting rope to swing the rubber ball, and causes the rubber ball to hit the filter plate.

[0009] Preferably, the filter pore sizes of the three filter screens decrease from left to right, achieving three-fold filtration and effectively removing solid particulate matter.

[0010] Preferably, three U-shaped guide rails are arranged equidistantly on the left and right sides of the front and rear sides of the inner wall of the particulate matter purification box, and the filter screen is located between the two U-shaped guide rails arranged opposite to each other in the front and rear. The U-shaped guide rails are arranged in the particulate matter purification box to provide support for the installation and position of the filter screen to ensure its stability.

[0011] Preferably, a strip operation port is provided on the top of the particulate matter purification box for the filter screen to pass through, and a cover is provided on the top of the filter screen. The strip operation port is located at the top of the particulate matter purification box and is used by operators to install, disassemble and maintain the filter screen.

[0012] Preferably, the top of the particulate matter purification box and the positions near the front and rear ends of the left side of the strip operation port are rotatably connected to a limiting rotation block, and the bottom of the limiting rotation block is against the top of the cover plate and in contact with the cover plate, providing a limiting function for the cover plate to ensure its stability during operation.

[0013] Preferably, the bottom of the particulate matter purification box is provided with three collection bins arranged equidistantly on the left and right to collect the particulate matter cleaned from the filter plate for subsequent processing. The bottom end of the collection bin is provided with a rectangular discharge pipe, which is responsible for discharging the collected particulate matter from the collection bin.

[0014] Preferably, an opening and closing assembly is provided on the front side of the rectangular discharge tube for opening and closing the rectangular discharge tube. The opening and closing assembly includes a rectangular shell fixedly connected to the front side of the rectangular discharge tube, and the rear side of the rectangular shell is an opening structure. A threaded rod is threadedly connected to the middle part of the front side of the rectangular shell, and the rear end of the threaded rod is rotatably connected to a rectangular baffle. A knob is provided at the front end of the threaded rod, and the threaded rod is driven to rotate by the knob, so that the threaded rod drives the rectangular baffle to move forward and backward, and the rectangular baffle is slidably connected in the rectangular shell.

[0015] Preferably, the rectangular baffle passes through the front side of the rectangular discharge pipe into the rectangular discharge pipe, and the outer side of the rectangular baffle is tightly fitted with the inner wall of the rectangular discharge pipe. The rectangular discharge pipe can be closed by the rectangular baffle, and the rectangular discharge pipe can also be opened by the rectangular baffle to discharge the filtered material in the collection bin.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] 1. The coal gasification tail gas purification device is equipped with three equidistantly arranged filter screens, and the filter pore sizes decrease from left to right, realizing multi-stage filtration. This design can effectively remove solid particles in the tail gas, significantly improve the purification efficiency, and reduce the emission of harmful substances.

[0018] 2. The coal gasification tail gas purification device is equipped with a self-cleaning component. It uses a motor to drive a rotating rod and an annular solid block, and uses a rubber ball to knock on the filter plate to automatically clean the particulate matter accumulated on its surface. This function reduces the need for manual maintenance, reduces the frequency of cleaning, and improves the availability and operating efficiency of the equipment.

[0019] 3. The coal gasification tail gas purification device has a strip operation port on the top of the particulate matter purification box, which allows operators to easily install, disassemble and maintain the filter plate. In addition, the limited rotation block design ensures the stability of the cover during operation, further improving the stability of the filter plate.

[0020] 4. The coal gasification tail gas purification device has a collecting bin that effectively collects the particulate matter cleaned from the filter screen. The rectangular discharge pipe at the bottom is used in conjunction with the opening and closing assembly to facilitate the discharge of the collected particulate matter, simplifying the cleaning process. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0022] Figure 2 This is a schematic cross-sectional view of the particle purification box in the present invention;

[0023] Figure 3 For this utility model Figure 2 A schematic diagram of the structure at point A in the middle;

[0024] Figure 4 It is a partial structural diagram of the utility model;

[0025] Figure 5 This is a schematic diagram of the assembly structure of the rectangular discharge tube and the opening and closing component in the present invention;

[0026] In the figure: 1. Particle purification box; 10. Air inlet pipe; 11. Air outlet pipe; 12. U-shaped guide rail; 13. Strip operation port; 14. Limit rotating block; 15. Collection bin; 16. Rectangular discharge pipe; 2. Filter screen; 20. Cover plate; 3. Self-cleaning component; 30. Motor; 31. Rotating rod; 32. Annular solid block; 33. Connecting rope; 34. Rubber ball; 4. Opening and closing component; 40. Rectangular shell; 41. Threaded rod; 42. Rectangular baffle; 43. Knob. DETAILED DESCRIPTION

[0027] 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.

[0028] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0029] See also Figure 1-Figure 5 , the utility model provides a technical solution:

[0030] A coal gasification tail gas purification device includes a particulate matter purification box 1, which is a main component of the coal gasification tail gas purification device and is responsible for accommodating a filter screen plate 2 and a self-cleaning component 3, and providing a space for purifying and processing the tail gas. An air inlet pipe 10 is provided on the left side of the particulate matter purification box 1, which is connected to the tail gas outlet of the gasification device and introduces the tail gas containing pollutants into the particulate matter purification box 1 for treatment. An air outlet pipe 11 is provided on the right side of the particulate matter purification box 1, which discharges the purified tail gas out of the particulate matter purification box 1 and is connected to a subsequent tail gas purification device. Three filter screen plates 2 are arranged at equal intervals in the particulate matter purification box 1, which filter solid particulate matter in the tail gas through their pores to effectively remove solid harmful substances.

[0031] A self-cleaning assembly 3 is provided on the particle purification box 1 and near the right side of each filter plate 2, which is used to automatically clean the particles accumulated on the surface of the filter plate 2, maintain the filtration efficiency, and reduce the need for manual maintenance. The self-cleaning assembly 3 includes a motor 30 fixedly connected to the rear side of the particle purification box 1. The motor 30 is connected to an external power supply. The motor 30 drives the rotating rod 31 to rotate, providing power for the self-cleaning assembly 3. The output shaft of the motor 30 passes through the rear side of the particle purification box 1 and is coaxially connected to the rotating rod 31. The outer wall of the rotating rod 31 is provided with a plurality of annular solid blocks 32 arranged equidistantly front and back. The annular solid block 32 is provided with a connecting rope 33. The end of the connecting rope 33 away from the annular solid block 32 is provided with a rubber ball 34. The motor 30 drives the rotating rod 31 to rotate, and the rotating rod 31 drives the plurality of annular solid blocks 32 to rotate, so that the annular solid block 32 drives the connecting rope 33 to move, so that the connecting rope 33 swings the rubber ball 34, and the rubber ball 34 knocks on the filter plate 2.

[0032] In this embodiment, the filter pore sizes of the three filter screens 2 decrease from left to right, achieving three filtrations and effectively removing solid particles.

[0033] Specifically, three U-shaped guide rails 12 are arranged equidistantly on the left and right sides of the front and rear sides of the inner wall of the particulate matter purification box 1. The filter plate 2 is located between the two U-shaped guide rails 12 arranged opposite to each other in the front and rear. The U-shaped guide rails 12 are arranged in the particulate matter purification box 1 to provide support for the installation and position of the filter plate 2 to ensure its stability.

[0034] Furthermore, a strip operation port 13 is provided at the top of the particulate matter purification box 1 for the filter screen plate 2 to pass through, and a cover plate 20 is provided at the top of the filter screen plate 2. The strip operation port 13 is located at the top of the particulate matter purification box 1 and is used by operators to install, disassemble and maintain the filter screen plate 2.

[0035] Furthermore, the top of the particulate matter purification box 1 and the positions near the front and rear ends of the left side of the strip operation port 13 are rotatably connected to the limiting rotation block 14. The bottom of the limiting rotation block 14 is against the top of the cover 20 and contacts the cover 20, providing a limiting function for the cover 20 to ensure its stability during operation.

[0036] Furthermore, three collection bins 15 are arranged equidistantly on the left and right at the bottom of the particulate matter purification box 1 to collect the particulate matter cleaned from the filter plate 2 for subsequent processing. A rectangular discharge pipe 16 is provided at the bottom end of the collection bin 15 to discharge the collected particulate matter from the collection bin 15.

[0037] Furthermore, an opening and closing assembly 4 is provided on the front side of the rectangular discharge tube 16 for opening and closing the rectangular discharge tube 16. The opening and closing assembly 4 includes a rectangular shell 40 fixedly connected to the front side of the rectangular discharge tube 16. The rear side of the rectangular shell 40 is an open structure. A threaded rod 41 is threadedly connected to the middle part of the front side of the rectangular shell 40. The rear end of the threaded rod 41 is rotatably connected to a rectangular baffle 42. A knob 43 is provided at the front end of the threaded rod 41. The threaded rod 41 is driven to rotate by the knob 43, so that the threaded rod 41 drives the rectangular baffle 42 to move forward and backward, and the rectangular baffle 42 is slidably connected to the rectangular shell 40.

[0038] Furthermore, the rectangular baffle 42 passes through the front side of the rectangular discharge pipe 16 to the inside of the rectangular discharge pipe 16, and the outer side of the rectangular baffle 42 is tightly fitted with the inner wall of the rectangular discharge pipe 16. The rectangular discharge pipe 16 is closed by the rectangular baffle 42, and the rectangular discharge pipe 16 can also be opened by the rectangular baffle 42 to discharge the filtered material in the collection bin 15.

[0039] When the coal gasification tail gas purification device of this embodiment is in use, the particulate matter purification box 1 is connected to the tail gas outlet of the coal gasification device to ensure that the air intake pipe 10 can introduce the tail gas containing pollutants into the particulate matter purification box 1, check the sealing of all connection parts to avoid gas leakage, turn on the power, start the motor 30, and thus drive the self-cleaning component 3. At this time, the motor 30 will start to run, the rotating rod 31 and the annular solid block 32 will start to rotate, and the rubber ball 34 will knock on the filter screen 2 through the swinging action of the connecting rope 33 to clean the particulate matter accumulated on its surface. The tail gas containing pollutants will flow into the particulate matter purification box 1 through the air intake pipe 10. In the purification box, the tail gas will pass through three equidistantly arranged filter screens 2 in turn. Since the filter pore size of the filter screen 2 gradually decreases from left to right, multi-stage filtration can be achieved to effectively remove solid particulate matter in the tail gas. During the filtration process, the purified tail gas will pass through the outlet The air is discharged through the air pipe 11, and the particulate matter cleaned off the filter screen plate 2 will be collected in the collection bin 15 at the bottom. The rectangular discharge pipe 16 is opened and closed by the opening and closing component 4, and the rectangular discharge pipe 16 will be responsible for discharging the collected particulate matter; during use, the filter screen plate 2 can be inspected and cleaned as necessary through the top strip operation port 13. The limit rotation block 14 ensures the stability of the cover plate 20 during operation, which is convenient for operators to install, disassemble and maintain. When the filter material needs to be cleaned, the operator can control the opening and closing of the rectangular baffle 42 through the knob 43, open the rectangular discharge pipe 16, and discharge the filter material in the collection bin 15 for subsequent processing and disposal. Through the above steps, the coal gasification exhaust gas purification device can efficiently purify the exhaust gas generated in the gasification process, reduce the emission of harmful substances, and at the same time provide convenience in operation and maintenance, thereby improving the overall utilization efficiency.

[0040] 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 preferred examples of the present invention and are not intended to limit 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, and such changes and improvements fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A coal gasification tail gas purification device, comprising a particle purification box (1), characterized in that: An air inlet pipe (10) is provided on the left side of the particle purification box (1), and an air outlet pipe (11) is provided on the right side of the particle purification box (1). Three filter screens (2) arranged at equal intervals are provided in the particle purification box (1). A self-cleaning component (3) is provided on the particle purification box (1) and close to the right side of each filter screen (2). The self-cleaning component (3) includes a motor (30) fixedly connected to the rear side of the particle purification box (1), an output shaft of the motor (30) passes through the rear side of the particle purification box (1) and is coaxially connected to a rotating rod (31), and an outer wall of the rotating rod (31) is provided with a plurality of annular solid blocks (32) arranged at equal intervals in front and back, a connecting rope (33) is provided on the annular solid block (32), and a rubber ball (34) is provided at one end of the connecting rope (33) away from the annular solid block (32).

2. The coal gasification tail gas purification device according to claim 1, characterized in that: The filter pore sizes of the three filter screen plates (2) decrease from left to right.

3. The coal gasification tail gas purification device according to claim 1, characterized in that: Three U-shaped guide rails (12) are arranged equidistantly on the front and rear sides of the inner wall of the particle purification box (1), and the filter screen plate (2) is located between the two U-shaped guide rails (12) arranged opposite to each other.

4. The coal gasification tail gas purification device according to claim 1, characterized in that: The top of the particle purification box (1) is provided with a strip-shaped operating opening (13) for the filter screen plate (2) to pass through, and the top of the filter screen plate (2) is provided with a cover plate (20).

5. The coal gasification tail gas purification device according to claim 4, characterized in that: The top of the particle purification box (1) and the positions close to the front and rear ends of the left side of the strip-shaped operation port (13) are rotatably connected to the limited rotation block (14), and the bottom of the limited rotation block (14) is against the top of the cover plate (20).

6. The coal gasification tail gas purification device according to claim 1, characterized in that: The bottom of the particle purification box (1) is provided with three collection bins (15) arranged at equal distances from left to right, and the bottom ends of the collection bins (15) are provided with rectangular discharge pipes (16).

7. The coal gasification tail gas purification device according to claim 6, characterized in that: An opening and closing assembly (4) is provided on the front side of the rectangular discharge pipe (16), and the opening and closing assembly (4) comprises a rectangular shell (40) fixedly connected to the front side of the rectangular discharge pipe (16), a threaded rod (41) is threadedly connected to the middle part of the front side of the rectangular shell (40), a rectangular baffle (42) is rotatably connected to the rear end of the threaded rod (41), and a knob (43) is provided on the front end of the threaded rod (41).

8. The coal gasification tail gas purification device according to claim 7, characterized in that: The rectangular baffle (42) passes through the front side of the rectangular discharge pipe (16) to the inside of the rectangular discharge pipe (16), and the outer side of the rectangular baffle (42) is tightly fitted with the inner wall of the rectangular discharge pipe (16).

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