Cleaning and dust removal device and method for high-temperature filter of waste sulfuric acid regeneration device

Abstract

The invention relates to a cleaning and dedusting device and method for a high-temperature filter of a waste sulfuric acid regeneration device, and belongs to the technical field of environmental protection and chemical engineering. Comprising a filter, a dust discharging pipeline, a connecting piece, a dust collecting barrel and a lifting cart used for carrying and lifting the dust collecting barrel, an outlet of the filter is connected with the dust discharging pipeline through a flange, a butterfly valve is installed on the dust discharging pipeline, and the dust discharging pipeline is communicated with the dust collecting barrel through the connecting piece. Complete sealing in the dust discharging process is achieved through cooperation of the connecting piece and the dust collecting barrel, carrying in the dust discharging process is achieved through the lifting cart, it is guaranteed that dust cannot diffuse to pollute the environment through the fence, and the effects of being environmentally friendly, easy to operate, capable of improving efficiency and capable of guaranteeing personal safety are achieved.

Description

Technical Field

[0001] The present invention relates to a high-temperature filter cleaning and dust removal device and method for a waste sulfuric acid regeneration device, belonging to the technical fields of environmental protection and chemical engineering. Background Art

[0002] A waste sulfuric acid cracking and regeneration device generally produces sulfuric acid through steps such as high-temperature cracking of waste acid, purification, conversion, drying and absorption. The waste sulfuric acid regeneration device is a petrochemical device, which is designed in a supporting manner with a low-temperature sulfuric acid alkylation device. Due to the process characteristics of the waste sulfuric acid regeneration device, a large amount of high-temperature dust containing sulfur dioxide and sulfur trioxide generated after the combustion of the incinerator not only harms the human body but also seriously pollutes the environment and must be cleaned regularly. A number of special high-temperature filters are designed in the process flow to filter the dust in the process gas. The dust adheres to the filter element and falls into the bottom of the high-temperature filter under the oscillation of pulse air at high temperature, and then enters the bottom dust collection tank after collection. The dust in the dust collection tank is cleaned daily.

[0003] The following problems are found in the actual cleaning and transfer process of dust by the high-temperature filter:

[0004] 1. Since the density of the dust itself is extremely low, with an average of about 50 kg / m 3 , collectively called fly ash, it is extremely easy to generate a large amount of leakage during the dust transfer process, which not only pollutes the environment but also affects the health of on-site operators, making the operation inconvenient and having certain risks.

[0005] 2. Limited by the nature of the dust, the temperature of the high-temperature filter needs to reach about 500 °C to effectively detach from the adsorption of the filter element. Therefore, the temperature is high during the process of discharging the dust into the dust collection tank, and the transfer operation can only be carried out after cooling, resulting in a transfer process time of up to 2 hours.

[0006] 3. The average daily dust discharge amount during daily production is about 20 - 50 kg. It is necessary to discharge and transfer the dust multiple times. The daily dust discharge operation time is long, and the workload of the entire transfer process is large. Especially after entering winter, the climate is dry and windy, and the negative impacts of the dust cleaning work on the environment and other aspects are more prominent.

[0007] In summary, although the high-temperature filter dust removal methods of the same type of waste sulfuric acid regeneration devices across the country are different, the existing problems are the same, that is, the dust removal process is time-consuming, labor-intensive, causes great harm to the human body, and causes greater environmental pollution, and safety cannot be controlled. Summary of the Invention

[0008] The present invention discloses a high-temperature filter cleaning and dust removal device and method for a waste sulfuric acid regeneration device, which not only solves the problems of great personal injury and environmental pollution in the cleaning and dust removal of the high-temperature filter of the waste sulfuric acid regeneration device in the background art, but also completely solves various risks existing in the original dust collection and transfer processes. The dust removal process is fully enclosed, environmentally friendly, simple to operate, effective, and safe and controlled.

[0009] The technical solution adopted by the present invention is: a high-temperature filter cleaning and dust removal device for a waste sulfuric acid regeneration device, which includes a filter, a dust discharge pipeline, a connector, a dust collection barrel, and a lifting trolley for transporting and lifting the dust collection barrel. The outlet of the filter is connected to the dust discharge pipeline through a flange, a butterfly valve is installed on the dust discharge pipeline, and the dust discharge pipeline is communicated with the dust collection barrel through a connector.

[0010] Further, the lifting trolley includes a bottom plate, side plates, handrails, a worm gear screw jack, a first platform, a second platform, a first bracket, a second bracket, a connecting rod, a turntable, and brake casters; one end of the side plate is fixedly connected to the bottom plate and there is an included angle between the side plate and the bottom plate, the handrail is fixed on the side plate, the brake casters are installed at the bottom of the bottom plate, the worm gear screw jack is fixed on the side plate, and the turntable is connected to the worm gear screw jack through a transmission rod; the second platform is fixed above the bottom plate, slideways are provided on the side walls of the first platform and the second platform, the centers of the first bracket and the second bracket are hinged, the top end of the first bracket is hinged to the first platform, the bottom end of the first bracket is hinged to the second platform, the top end of the second bracket is hinged to the first platform, the bottom end of the second bracket is hinged to the second platform, the screws of the two worm gear screw jacks are hinged through a connecting rod, and the bottom ends of the two first brackets are also hinged to the connecting rod. The first platform is controlled to rise or fall by rotating the turntable.

[0011] Further, the lifting trolley further includes a bearing and a barrel wall clamp. The bearing is sleeved on the transmission rod, and the barrel wall clamp is fixed on the bearing. The barrel wall clamp is used to clamp the dust collection barrel to increase stability.

[0012] Further, a fence for preventing dust diffusion is also placed around the outside of the lifting trolley.

[0013] Further, the fence includes a rectangular frame and a stainless steel mesh. The stainless steel mesh is fixed inside the rectangular frame. Brake casters are also provided at the bottom of the rectangular frame, connection rings are provided on the side walls of the rectangular frame, and hooks are provided at the rear side of the rectangular frame.

[0014] Further, the top end of the connector is detachably connected to the dust discharge pipeline, and the bottom end of the connector is detachably connected to the dust collection barrel.

[0015] Further, the bottom end of the connector includes an inner ring and an outer ring, and there is a gap between the inner ring and the outer ring. The gap is used to clamp the barrel wall of the dust collection barrel.

[0016] Furthermore, a gasket is provided between the inner ring, the dust collection bucket, and the outer ring.

[0017] The present invention also provides a method for cleaning and dust removal of a high-temperature filter in a waste sulfuric acid regeneration device, and the specific steps are as follows:

[0018] Step 1: Place the dust collection bucket on the first platform of the lifting trolley, clamp the dust collection bucket with the barrel wall clamp, transport the dust collection bucket to below the connector by the lifting trolley, control the first platform to rise by rotating the turntable, and then insert the top end of the dust collection bucket between the inner ring and the outer ring, and seal it with a gasket.

[0019] Step 2: Open the butterfly valve, start the screw conveyor and keep it running for a period of time. Dust is injected into the dust collection bucket through the ash discharge pipeline. The operator judges the dust injection amount by knocking on the dust collection bucket. When the dust injection amount reaches the requirement, close the screw conveyor.

[0020] Step 3: Operate the lifting trolley to lower the dust collection bucket to a height where there is enough space for the bucket lid to be inserted between the top end of the bucket and the connector. Cover the dust collection bucket with the bucket lid through the gap. Finally, push out the lifting trolley to unload the dust collection bucket and store it at a designated location.

[0021] Furthermore, before opening the butterfly valve, set up enclosures around the outside of the lifting trolley.

[0022] The present invention discloses a device and method for cleaning and dust removal of a high-temperature filter in a waste sulfuric acid regeneration device. The beneficial effect is that compared with the prior art, through the cooperation of the connector and the dust collection bucket, complete sealing during the ash discharge process is achieved. Through the setting of the lifting trolley, handling during the ash discharge process is realized. By setting up enclosures, it is ensured that dust will not spread and pollute the environment, achieving the effects of green environmental protection, simple operation, improved efficiency, and ensuring personal safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0024] Figure 1 Shown is the structural schematic diagram of the dust removal device in Embodiment 1;

[0025] Figure 2 Shown is the structural schematic diagram of the lifting trolley in Embodiment 1;

[0026] Figure 3Shown is the schematic rear view structure of the lifting trolley in Embodiment 1;

[0027] Figure 4 Shown is Figure 3 the schematic A-A sectional view of

[0028] Figure 5 Shown is Figure 2 the schematic top view of

[0029] Figure 6 Shown is the schematic sectional view of the connecting piece in Embodiment 1;

[0030] Figure 7 Shown is the schematic front view structure of the enclosure in Embodiment 1;

[0031] Figure 8 Shown is the schematic diagram of the rectangular frame and the brake caster.

[0032] As shown in the figure:

[0033] 1. Filter; 2. Ash discharge pipeline; 3. Connecting piece; 4. Dust collection bucket; 5. Flange; 6. Butterfly valve; 11. Bottom plate; 12. Side plate; 13. Armrest; 14. Worm gear screw lift; 15. First platform; 16. Second platform; 17. First bracket; 18. Second bracket; 19. Turntable; 20. Bearing; 21. Barrel wall clamp; 22. Brake caster; 23. Transmission rod; 24. Slideway; 25. Lead screw; 26. Stainless steel mesh; 27. Rectangular frame; 28. Connecting ring; 29. Brake caster; 30. Outer ring; 31. Inner ring; 33. Connecting rod.

[0034] Specific implementation method

[0035] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Apparently, the described embodiments are only some of the embodiments of the present invention, rather than all of the embodiments.

[0036] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the present invention, its application, or its use. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection of the present invention.

[0037] Embodiment 1

[0038] As Figures 1 to 8As shown in the figure, this embodiment provides a high-temperature filter cleaning and dust removal device for a waste sulfuric acid regeneration device, including a filter 1, a dust discharge pipeline 2, a connecting piece 3, a dust collection bucket 4, and a lifting trolley for transporting and lifting the dust collection bucket 4. The outlet of the filter 1 is connected to the dust discharge pipeline 2 through a flange 5. A butterfly valve 6 is installed on the dust discharge pipeline 2, and the dust discharge pipeline 2 is communicated with the dust collection bucket 4 through the connecting piece 3. A fence for preventing dust diffusion is also placed around the outside of the lifting trolley.

[0039] As Figures 2 to 5 shown, the lifting trolley includes a bottom plate 11, side plates 12, a handrail 13, a worm gear screw jack 14, a first platform 15, a second platform 16, a first bracket 17, a second bracket 18, a turntable 19, a bearing 20, a connecting rod 33, a barrel wall clamp 21, and a brake caster 22. One end of the side plate 12 is fixedly connected to the bottom plate 11 and there is an angle between the side plate 12 and the bottom plate 11. The handrail 13 is fixed on the side plate 12. The brake caster 22 is installed at the bottom of the bottom plate 11. The worm gear screw jack 14 is fixed on the side plate 12. The bottom end of the turntable 19 is connected to a transmission rod 23, and the other end of the transmission rod 23 is connected to the worm gear screw jack 14. The bearing 20 is sleeved on the transmission rod 23. The barrel wall clamp 21 is fixed on the bearing 20, and the barrel wall clamp 21 is used to clamp the dust collection bucket 4. The second platform 16 is fixed above the bottom plate 11. Slideways 24 are provided on the side walls of the first platform 15 and the second platform 16. The centers of the first bracket 17 and the second bracket 18 are hinged. The top end of the first bracket 17 is hinged to the first platform 15, the bottom end of the first bracket 17 is hinged to the second platform 16, the top end of the second bracket 18 is hinged to the first platform 15, and the bottom end of the second bracket 18 is hinged to the second platform 16. The screws 25 of the two worm gear screw jacks 14 are hinged through the connecting rod 33, and the bottom ends of the two first brackets 17 are also hinged to the connecting rod 33. By rotating the turntable 19, the screw 25 of the worm gear screw jack 14 is extended or retracted, and then the first bracket 17 is driven by the connecting rod 33 to slide in the slideway 24 of the second platform 16, realizing the rise or fall of the first platform 15.

[0040] As Figure 7 and 8 shown, the fence includes a rectangular frame 27 and a stainless steel mesh 26. The stainless steel mesh 26 is fixed inside the rectangular frame 27. Brake casters 29 are also provided at the bottom of the rectangular frame 27. Connecting rings 28 are provided on the side walls of the rectangular frame 27. Hooks are also provided at the rear side of the rectangular frame 27. The enclosure of multiple fences is realized by the plug-in fit of the hooks and the connecting rings 28, avoiding the outward diffusion of the leaked dust.

[0041] The top end of the connecting piece 3 is connected to the dust discharge pipeline 2 by bolts. As Figure 6 shown, the bottom end of the connecting piece 3 includes an inner ring 31 and an outer ring 30, and there is a gap between the inner ring 31 and the outer ring 30, facilitating the insertion of the top barrel wall of the dust collection bucket 4 into the gap.

[0042] A gasket is provided between the inner ring 31 and the dust collection bucket 4 and between the dust collection bucket 4 and the outer ring 30 to prevent dust from overflowing.

[0043] The present invention also provides a method for cleaning and dust removal of a high-temperature filter in a waste sulfuric acid regeneration device. First, place the dust collection bucket 4 on the first platform 15 of the lifting trolley, and the barrel wall clamp 21 clamps the dust collection bucket 4. Then, use the lifting trolley to transport the dust collection bucket 4 below the connecting member 3. Manually rotate the turntable 19 to control the first platform 15 to rise, and then insert the top end of the dust collection bucket 4 between the inner ring 31 and the outer ring 30, and seal it with a gasket. Secondly, set up enclosures around the outside of the lifting trolley, open the butterfly valve 6, start the screw conveyor and run it continuously for 3 - 5 minutes. The operator judges the dust injection amount by knocking on the dust collection bucket 4. Generally, the dust injection amount is required not to exceed 90% of the volume of the dust collection bucket 4. Then, turn off the screw conveyor, operate the lifting trolley to lower the dust collection bucket 4 to a height where the top end of the bucket is far enough from the connecting member 3 for the bucket cover to be inserted. Cover the dust collection bucket 4 with the bucket cover through the gap, remove the enclosures, and finally push out the lifting trolley to unload the dust collection bucket 4 and store it at a designated location.

[0044] It should be noted that the worm gear screw jack 14 can be driven not only manually but also by a motor.

[0045] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A high-temperature filter cleaning and dust removal device for a waste sulfuric acid regeneration device, characterized in that, It includes a filter (1), a dust discharge pipeline (2), a connecting piece (3), a dust collection bucket (4), and a lifting trolley for carrying and lifting the dust collection bucket (4). The outlet of the filter (1) is connected to the dust discharge pipeline (2) through a flange (5). A butterfly valve (6) is installed on the dust discharge pipeline (2), and the dust discharge pipeline (2) is communicated with the dust collection bucket (4) through the connecting piece (3).

2. The high-temperature filter cleaning and dust removal device for a waste sulfuric acid regeneration device according to claim 1, characterized in that, The lifting trolley includes a bottom plate (11), side plates (12), handrails (13), a worm gear screw jack (14), a first platform (15), a second platform (16), a first bracket (17), a second bracket (18), a turntable (19), and brake casters (22); one end of the side plate (12) is fixedly connected to the bottom plate (11) and there is an angle between the side plate (12) and the bottom plate (11). The handrail (13) is fixed on the side plate (12). The brake caster (22) is installed at the bottom of the bottom plate (11). The worm gear screw jack (14) is fixed on the side plate (12). The turntable (19) is connected to the worm gear screw jack (14) through a transmission rod (23); the second platform (16) is fixed above the bottom plate (11). Sliding grooves (24) are provided on the side walls of the first platform (15) and the second platform (16). The centers of the first bracket (17) and the second bracket (18) are hinged. The top end of the first bracket (17) is fixedly connected to the first platform (15), the bottom end of the first bracket (17) is slidably connected to the second platform (16), the top end of the second bracket (18) is slidably connected to the first platform (15), and the bottom end of the second bracket (18) is fixedly connected to the second platform (16). The screw rod (25) of the worm gear screw jack (14) is also fixedly connected to the bottom end of the first bracket (17). By rotating the turntable (19), the first platform (15) is controlled to rise or fall.

3. The high-temperature filter cleaning and dust removal device for a waste sulfuric acid regeneration device according to claim 2, characterized in that, The lifting trolley further includes a bearing (20) and a barrel wall clamp (21). The bearing (20) is sleeved on the transmission rod (23), and the barrel wall clamp (21) is fixed on the bearing (20). The barrel wall clamp (21) is used for clamping the dust collection bucket (4).

4. The high-temperature filter cleaning and dust removal device for a waste sulfuric acid regeneration device according to claim 3, wherein, Around the outside of the lifting trolley, there are also placed enclosures for preventing dust diffusion.

5. A high-temperature filter cleaning and dust removal device for a waste sulfuric acid regeneration device according to claim 4, characterized in that, The enclosure includes a rectangular frame (27) and a stainless steel mesh (26). The stainless steel mesh (26) is fixed inside the rectangular frame (27). A base (29) is also provided at the bottom of the rectangular frame (27). Connecting rings (28) are provided on the side walls of the rectangular frame (27). A hook is also provided at the rear of the rectangular frame (27).

6. The high-temperature filter cleaning and dust removal device for a waste sulfuric acid regeneration device according to claim 1, characterized in that, The top end of the connecting piece (3) is detachably connected to the dust discharge pipeline (2), and the bottom end of the connecting piece (3) is detachably connected to the dust collection bucket (4).

7. The high-temperature filter cleaning and dust removal device for a waste sulfuric acid regeneration device according to claim 6, wherein, The bottom end of the connecting piece (3) includes an inner ring and an outer ring (30). There is a gap between the inner ring and the outer ring (30), and the gap is used for clamping the barrel wall of the dust collection bucket (4); gaskets are also provided between the inner ring, the dust collection bucket (4), and the outer ring (30).

8. A method for cleaning and dedusting a high-temperature filter of a waste sulfuric acid regeneration device, characterized in that, First, place the dust collection bucket (4) on the first platform (15) of the lifting trolley. The bucket wall clamp (21) clamps the dust collection bucket (4). Then, use the lifting trolley to transport the dust collection bucket (4) below the connecting piece (3). By rotating the turntable (19), control the first platform (15) to rise, and then insert the top of the dust collection bucket (4) between the inner ring and the outer ring (30), and seal it with a gasket. Secondly, open the butterfly valve (6), start the screw conveyor and run it continuously for a period of time. The operator taps the dust collection bucket (4) and judges the dust injection amount according to the tapping sound. Then, turn off the screw conveyor, operate the lifting trolley to lower the dust collection bucket (4) to a height sufficient for the bucket cover to be inserted between the top of the bucket and the connecting piece (3), and cover the bucket cover of the dust collection bucket (4) on the dust collection bucket (4) through the gap. Finally, push out the lifting trolley to unload the dust collection bucket (4) and store it at the designated location.

9. A method for cleaning and dust removal of a high-temperature filter in a waste sulfuric acid regeneration device according to claim 8, characterized in that, Before opening the butterfly valve (6), set up a fence around the outside of the lifting trolley.

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