Flue gas countercurrent multistage automatic purification device

Abstract

The utility model discloses a flue gas countercurrent multistage automatic purification device which comprises a shell, adsorption areas which are vertically arranged and horizontally separated in pairs are arranged in the shell, and a feeding device is arranged on the upper portion of the shell and connected with openings in the upper ends of the adsorption areas. An upper partition plate is horizontally and fixedly arranged between the upper ends of the two air passing partition plates in each pair of adsorption areas, a lower partition plate is horizontally and fixedly arranged at the lower end of the outer side of each pair of adsorption areas, and a discharging device is arranged at an outlet below each adsorption area. A plurality of horizontally-arranged middle partition plates are arranged in the air passing space below the upper partition plate and the air passing space above the lower partition plate respectively, and the middle partition plates above the lower partition plate are arranged on the upper side of the middle partition plate below the upper partition plate in a staggered mode. According to the utility model, on-line continuous replacement of the filler can be realized, and the gas purification efficiency and the filler reaction utilization efficiency can be better improved.

Description

Technical Field

[0001] This utility model relates to the field of industrial gas purification and treatment technology, and in particular to a multi-stage automatic flue gas counter-current purification device. Background Technology

[0002] Industrial flue gas is the gaseous byproduct of fuel combustion in industrial production processes. It typically contains large amounts of solid dust and toxic gases, especially carbon monoxide, which has received considerable attention in recent years. Conventional carbon monoxide treatment equipment and other types of flue gas purification equipment all employ a fixed-bed packing structure. For example, CN202311805432.5 discloses a flue gas treatment device utilizing the calorific value of carbon monoxide in sintering flue gas, and CN202021463211.6 discloses a combined removal device for carbon monoxide and nitrogen oxides in sintering flue gas. In these technologies, the purification packing is laid on fixed filter plates, and the flue gas is controlled to pass through the packing and filter plates for purification. This approach suffers from drawbacks such as low treatment efficiency and inconvenient packing replacement.

[0003] The applicant previously applied for patent number 2024213766018, entitled "A Moving Bed Type Sintering Flue Gas Treatment Equipment." This patent uses a moving bed to improve the purification efficiency of carbon monoxide and facilitate the replacement of carbon monoxide catalyst packing. However, this equipment still has the problem of low packing treatment efficiency due to its tilt.

[0004] To facilitate packing replacement and improve purification efficiency, the applicant also applied for patent CN202411691084.8, which discloses a continuous packing gas purification method. The method is characterized by controlling the purification packing material to fall into multiple vertically arranged, horizontally spaced adsorption zones after entering the processing space. The gas to be purified is controlled to pass vertically from top to bottom through the processing space, and then laterally through each adsorption zone within the processing space to contact the purification packing material for purification. After the reaction, the purified packing material leaves the processing space below the adsorption zone. This invention has the advantages of facilitating online packing replacement, reducing operating resistance, and improving the purification efficiency and effectiveness of the packing material.

[0005] However, in the aforementioned invention patent, the gas to be purified moves from top to bottom in the same direction as the flue gas, and the gas passes through the packing area in the horizontal direction in one go. Therefore, it still has the defects of low gas purification efficiency and low packing reaction utilization efficiency.

[0006] Therefore, how to further improve gas purification efficiency and packing reaction utilization efficiency while ensuring continuous replacement of packing material has become a problem that needs to be further considered and solved by those in the field. Utility Model Content

[0007] In view of the shortcomings of the prior art, the technical problem to be solved by this utility model is: how to provide a flue gas countercurrent multi-stage automatic purification device that can better improve gas purification efficiency and packing reaction utilization efficiency on the basis of realizing online continuous replacement of packing.

[0008] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0009] A multi-stage automatic flue gas counter-current purification device includes a housing. Inside the housing are vertically arranged and horizontally spaced pairs of adsorption zones. A feeding device is located at the top of the housing, connecting to the upper openings of each adsorption zone. Each pair of adsorption zones is formed by four vertically arranged and horizontally spaced air-passing baffles. Air-passing spaces are formed between the adsorption zones and between the adsorption zones and the housing. An upper baffle is horizontally fixed between the upper ends of the two air-passing baffles inside each pair of adsorption zones. The upper ends of the adsorption zones on both sides of the upper baffle are open. The lower ends of the two air-passing baffles on the outer sides of each pair of adsorption zones are open. A lower partition is horizontally fixed between the outer air passage partitions of the shell or other adsorption areas, and a discharge device is provided at the outlet below each adsorption area. The feature is that several horizontally arranged intermediate partitions are respectively provided in the air passage space below the upper partition and the air passage space above the lower partition. The intermediate partitions above the lower partition are staggered and located above the intermediate partitions below the upper partition. An air inlet is provided at the bottom of the shell and communicates with the lower end of the air passage space inside each pair of adsorption areas. An air outlet is provided at the top of the shell and communicates with the upper end of the air passage space outside each pair of adsorption areas.

[0010] In this way, when the device is working, the packing material enters each adsorption zone from the feeding device, moves downward along each adsorption zone, and exits from the outer shell through the discharge device. The flue gas to be purified enters the lower end of the air passage space inside each pair of adsorption zones through the air inlet at the bottom of the outer shell. Then, under the action of the middle partition, it flows horizontally through the adsorption zone and repeatedly folds upward, finally flowing upward from the upper end of the air passage space outside each pair of adsorption zones and exiting through the air outlet at the top of the outer shell. Therefore, this device can easily realize online replacement of the packing material and achieve continuous filling and processing. At the same time, the flue gas and the packing material repeatedly come into contact, which improves the contact reaction efficiency between the flue gas and the packing material. In addition, the upward movement of the flue gas and the countercurrent contact with the packing material ensure that the packing material reacts with the freshest flue gas before flowing out of the outer shell, and the flue gas reacts with the freshest packing material before flowing out of the outer shell, maximizing the reaction effect between the packing material and the flue gas and avoiding the defect of waste caused by the packing material's reaction being less active than its own. In addition, the design uses vertically arranged adsorption zones, which facilitates the simultaneous processing of multiple sets (at least two sets) of purification packing materials, improving the processing efficiency.

[0011] Furthermore, the intermediate partition is generally horizontal, and vertical sliding adjustment mechanisms are provided between its two ends along the horizontal gas flow direction and the corresponding mounting walls.

[0012] This allows the middle partition to be adjusted up and down as needed during installation and maintenance, thus better ensuring the reaction effect.

[0013] Furthermore, the vertical sliding adjustment mechanism includes a connecting plate that is vertically upward or downward at both ends of the intermediate partition along the horizontal gas flow direction. Vertical slots are provided on the mounting walls at both ends of the connecting plate. The horizontal cross-section of the slot cavity is an inwardly expanding convex shape. The vertical sliding adjustment mechanism also includes an adjusting bolt with a nut confined within the slot. The adjusting bolt passes through the slot and the through hole on the connecting plate and is fixed by a limiting nut.

[0014] In this way, loosening the limit nut allows the middle partition to slide up and down for adjustment, and tightening the limit nut after adjustment secures it. This makes it very convenient to quickly adjust the position of the middle partition.

[0015] Furthermore, a clamping nut is also connected and installed outside the limiting nut. This allows for easy adjustment and fixation.

[0016] Furthermore, the connecting plate of the middle partition below the upper partition is set downwards, and the connecting plate of the middle partition above the lower partition is set upwards. A manhole is opened at the upper end and the lower end of the outer shell.

[0017] This allows maintenance personnel to easily access the manhole at the top of the casing to adjust the position of the middle partition above the lower partition, and access the manhole at the bottom of the casing to adjust the position of the middle partition below the upper partition.

[0018] Furthermore, elastic material is provided on both ends of the middle partition and fits snugly against the corresponding mounting wall. This achieves a better seal and prevents air leakage.

[0019] Furthermore, the structure of the feeding device, discharging device, etc., can be the same as that in the applicant's previous patent CN202411691084.8, and will not be described again here.

[0020] In summary, this invention enables continuous online replacement of the packing material and improves gas purification efficiency and packing material reaction utilization efficiency. Attached Figure Description

[0021] Figure 1 This is a front cross-sectional view of the flue gas counterflow multi-stage automatic purification device in Embodiment 1 of this utility model.

[0022] Figure 2 for Figure 1 AA sectional view.

[0023] Figure 3 for Figure 2A schematic diagram of the structure of the middle partition located above the lower partition.

[0024] Figure 4 for Figure 3 Left sectional view.

[0025] Figure 5 for Figure 2 A schematic diagram of the middle partition located below the upper partition.

[0026] Figure 6 This is a structural schematic diagram of Embodiment 2 of the present invention. Detailed Implementation

[0027] The present invention will now be described in further detail with reference to specific embodiments.

[0028] Example 1: See Figure 1-5 A multi-stage automatic flue gas counter-current purification device includes a housing 1. Inside the housing 1 are vertically arranged and horizontally spaced pairs of adsorption zones 2. A feeding device 3 is located at the top of the housing 1 and connects to the upper openings of each adsorption zone 2. Each pair of adsorption zones 2 is formed by four vertically arranged and horizontally spaced air-passing baffles 5 sandwiched together. Air-passing spaces are formed between the adsorption zones and between the adsorption zones and the housing. An upper baffle 6 is horizontally fixed between the upper ends of the two air-passing baffles inside each pair of adsorption zones. The upper ends of the adsorption zones on both sides of the upper baffle 6 are open. The lower ends of the two air-passing baffles on the outer sides of each pair of adsorption zones are open. A lower partition 7 is horizontally fixed between the outer air passage partitions of the shell or other adsorption areas, and a discharge device 8 is provided at the outlet below each adsorption area. The feature is that several horizontally arranged intermediate partitions 9 are respectively provided in the air passage space below the upper partition 6 and the air passage space above the lower partition. The intermediate partitions above the lower partition 6 are staggered and located on the upper side of the intermediate partitions below the upper partition 7. An air inlet 11 is provided at the bottom of the shell and communicates with the lower end of the air passage space inside each pair of adsorption areas. An air outlet 12 is provided at the top of the shell and communicates with the upper end of the air passage space outside each pair of adsorption areas.

[0029] In this way, when the device is working, the packing material enters each adsorption zone from the feeding device, moves downward along each adsorption zone, and exits from the outer shell through the discharge device. The flue gas to be purified enters the lower end of the air passage space inside each pair of adsorption zones through the air inlet at the bottom of the outer shell. Then, under the action of the middle partition, it flows horizontally through the adsorption zone and repeatedly folds upward, finally flowing upward from the upper end of the air passage space outside each pair of adsorption zones and exiting through the air outlet at the top of the outer shell. Therefore, this device can easily realize online replacement of the packing material and achieve continuous filling and processing. At the same time, the flue gas and the packing material repeatedly come into contact, which improves the contact reaction efficiency between the flue gas and the packing material. In addition, the upward movement of the flue gas and the countercurrent contact with the packing material ensure that the packing material reacts with the freshest flue gas before flowing out of the outer shell, and the flue gas reacts with the freshest packing material before flowing out of the outer shell, maximizing the reaction effect between the packing material and the flue gas and avoiding the defect of waste caused by the packing material's reaction being less active than its own. In addition, the design uses vertically arranged adsorption zones, which facilitates the simultaneous processing of multiple sets (at least two sets) of purification packing materials, improving the processing efficiency.

[0030] The intermediate partition 9 is generally horizontal, and vertical sliding adjustment mechanisms are provided between its two ends along the horizontal gas flow direction and the corresponding mounting walls.

[0031] This allows the middle partition to be adjusted up and down as needed during installation and maintenance, thus better ensuring the reaction effect.

[0032] The vertical sliding adjustment mechanism includes a connecting plate 13 that is vertically upward or downward at both ends of the intermediate partition 9 along the horizontal flow direction of the gas. Vertical slots 14 are provided on the mounting walls at both ends of the connecting plate. The horizontal cross section of the inner cavity of the slot 14 is convex inward. The vertical sliding adjustment mechanism also includes an adjusting bolt 15 with a nut limited in the slot. The adjusting bolt 15 passes through the slot and the through hole on the connecting plate and is fixed by a limiting nut 16.

[0033] In this way, loosening the limit nut allows the middle partition to slide up and down for adjustment, and tightening the limit nut after adjustment secures it. This makes it very convenient to quickly adjust the position of the middle partition.

[0034] The limiting nut 16 is connected to a clamping nut 17 for easy adjustment and fixation.

[0035] Among them, the connecting plate of the middle partition below the upper partition 6 is set downward, and the connecting plate of the middle partition above the lower partition 7 is set upward. A manhole 19 is opened at the upper end and the lower end of the outer shell.

[0036] This allows maintenance personnel to easily access the manhole at the top of the casing to adjust the position of the middle partition above the lower partition, and access the manhole at the bottom of the casing to adjust the position of the middle partition below the upper partition.

[0037] The middle partition 9 also has elastic material 18 on both sides, which fits into the corresponding mounting wall. This better achieves a seal and prevents air leakage.

[0038] In addition, in practice, the structure of the feeding device, discharging device, etc. is completely consistent with that of the applicant's previous patent CN202411691084.8, and the specific structure will not be described again here.

[0039] Example 2, see Figure 6 The difference between the flue gas countercurrent multi-stage automatic purification device in this embodiment and that in embodiment 1 is that the horizontally spaced adsorption regions are arranged in multiple pairs at intervals in the horizontal direction. The rest of the structure is the same as that in embodiment 1 and will not be described in detail here.

Claims

1. A multi-stage automatic flue gas counter-current purification device, comprising a housing, wherein the housing has vertically arranged and horizontally spaced pairs of adsorption zones, a feeding device is provided at the top of the housing and connected to the upper openings of each adsorption zone, each pair of adsorption zones is formed by four vertically arranged and horizontally spaced air-passing baffles sandwiched between each other, forming an air-passing space between the adsorption zones and between the adsorption zones and the housing, an upper baffle is horizontally fixed between the upper ends of the two air-passing baffles inside each pair of adsorption zones, the upper ends of the adsorption zones on both sides of the upper baffle are open, a lower baffle is horizontally fixed between the lower ends of the two air-passing baffles on the outer side of each pair of adsorption zones and the outer side air-passing baffles of the housing or other pairs of adsorption zones, and a discharge device is provided at the outlet below each adsorption zone, characterized in that… Several horizontally arranged intermediate partitions are respectively installed in the air passage space below the upper partition and in the air passage space above the lower partition. The intermediate partition above the lower partition is offset to the upper side of the intermediate partition below the upper partition. An air inlet is provided at the bottom of the shell and communicates with the lower end of the air passage space inside each pair of adsorption areas. An air outlet is provided at the top of the shell and communicates with the upper end of the air passage space outside each pair of adsorption areas.

2. The multi-stage automatic flue gas counter-current purification device as described in claim 1, characterized in that, The intermediate partition is generally horizontal, and vertical sliding adjustment mechanisms are provided between its two ends along the horizontal gas flow direction and the corresponding mounting walls.

3. The multi-stage automatic flue gas counter-current purification device as described in claim 2, characterized in that, The vertical sliding adjustment mechanism includes a connecting plate that is vertically upward or downward at both ends of the intermediate partition along the horizontal gas flow direction. Vertical slots are provided on the mounting walls at both ends of the connecting plate. The horizontal cross-section of the slot cavity is an inwardly expanding convex shape. The vertical sliding adjustment mechanism also includes an adjusting bolt with a nut limited in the slot. The adjusting bolt passes through the slot and the through hole on the connecting plate and is fixed by a limiting nut.

4. The multi-stage automatic flue gas counter-current purification device as described in claim 3, characterized in that, A clamping nut is also connected and installed in addition to the limit nut.

5. The multi-stage automatic flue gas counter-current purification device as described in claim 3, characterized in that, The connecting plate of the middle partition below the upper partition is set downwards, and the connecting plate of the middle partition above the lower partition is set upwards. A manhole is opened at the upper and lower ends of the outer shell.

6. The multi-stage automatic flue gas counter-current purification device as described in claim 3, characterized in that, The other two sides of the middle partition are also provided with elastic material that fits into the corresponding mounting wall.

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