Filtering device, blast furnace gas desulfurization device and coke oven gas desulfurization device

Abstract

The utility model discloses a filter equipment, blast furnace gas desulfurization device and coke oven gas desulfurization device relates to coke oven gas tail gas treatment field, including outer tube, first bottom plate, second bottom plate, material import and export component, outer tube is cylindrical, has top end and bottom, top end and first bottom plate sealedly connected, bottom and second bottom plate sealedly connected, the outer tube is inwards arranged with at least two fluid passageways, and fluid passageway has same cross -section area, and material import and export component sets up on outer tube or first bottom plate or second bottom plate. The outer tube is inwards arranged with at least two cross -section area same passageways, can make the flow of fluid more uniform and will not disturb the fluid in other passageways. The cross -section area of each fluid passageway is same, then can avoid the tangential velocity variation caused by the flow area uneven and causes the filtration efficiency reduction.

Description

Technical Field

[0001] This utility model relates to the field of coke oven gas tail gas treatment, and in particular to a filtration device, a blast furnace gas desulfurization device, and a coke oven gas desulfurization device. Background Technology

[0002] Coke oven gas is mainly composed of hydrogen and methane, and its composition is extremely complex, containing a large amount of organic matter, benzene and benzene series compounds, naphthalene, phenols, etc., as well as a large amount of organic sulfur (mainly composed of carbon disulfide CS2, carbonyl sulfide COS, and a small amount of thiols, thioethers, and thiophenes). When solvent desulfurization is used, it will undergo physical and chemical reactions with the organic matter in the solvent, causing blockages in pipelines and pumps.

[0003] To ensure the solvent operates stably and efficiently over a long period of time, it is necessary to remove organic impurities introduced into the solvent by coke oven gas during the solvent operation process.

[0004] In normal use, traditional filters have uneven packing density of filter media and uneven internal fluid resistance. This causes the fluid to preferentially choose the path with the lowest pressure drop (lowest resistance) during filtration, resulting in reduced efficiency.

[0005] In addition, the mature and widely used treatment method in industry is to use activated carbon adsorption and filtration. However, activated carbon is very easy to pulverize and form secondary pollution during long-term immersion in solvents and use. Therefore, when using activated carbon filters, additional mechanical filters need to be added at the inlet and outlet of the filtrate to make up for this defect. This can easily lead to premature maintenance and replacement of the entire activated carbon filtration system due to local failure.

[0006] Therefore, those skilled in the art are dedicated to developing a filtration device, a blast furnace gas desulfurization device, and a coke oven gas desulfurization device to overcome the shortcomings of the aforementioned traditional activated carbon filters. Utility Model Content

[0007] In view of the above-mentioned defects in the prior art, the technical problem to be solved by this utility model is how to develop a filtration device, a blast furnace gas desulfurization device and a coke oven gas desulfurization device to solve the problems of low utilization rate of filter media caused by uneven fluid flow and easy pulverization and failure of filter media.

[0008] To achieve the above objectives, this utility model provides a filtration device, which may include an outer cylinder, a first bottom plate, a second bottom plate, and material inlet and outlet components; The outer cylinder is cylindrical, with a top end and a bottom end. The top end is sealed to the first bottom plate, and the bottom end is sealed to the second bottom plate. The outer cylinder has an outer wall and an inner wall. The inner wall, together with the first bottom plate and the second bottom plate, forms a filter cavity. At least two fluid channels are provided in the filter cavity along the tangential direction. The fluid channels have the same cross-sectional area. The material inlet and outlet components are disposed on the outer cylinder, the first bottom plate, or the second bottom plate for material to enter and exit the filter chamber.

[0009] Furthermore, the filtration device may also include a partition and a central column; The central column is disposed tangentially at the center of the filter cavity, and the partition is disposed between the central column and the inner wall of the outer cylinder to separate at least two fluid channels within the filter cavity.

[0010] Furthermore, the cross-sectional profile of the partition is an involute geometry, the partition has a starting side and a ending side, the starting side is connected to the central column, and the ending side is connected to the inner wall of the outer cylinder.

[0011] Furthermore, the ratio of the tangential length of the partition to the arc length of the cross-sectional profile of the partition is greater than or equal to 6.5 and less than or equal to 7.5.

[0012] Furthermore, the ratio of the diameter of the central column to the diameter of the outer cylinder is greater than or equal to 2 and less than or equal to 7.

[0013] Furthermore, the material inlet and outlet components may include a filtrate inlet component, which is located at the center of the first base plate.

[0014] Furthermore, the material inlet and outlet components may include a filtrate inlet component, which is located at the center of the second base plate.

[0015] Furthermore, the filtrate inlet component is cylindrical, having an outer section and an inner section. The outer section is located outside the outer cylinder, and the inner section is located inside the outer cylinder.

[0016] Furthermore, an opening is provided on the outer section of the filtrate inlet component.

[0017] Furthermore, the inner section of the filtrate inlet component is provided with holes, which are evenly distributed on the outer surface of the inner section.

[0018] Furthermore, the central column is connected to the inner section.

[0019] Furthermore, the material inlet / outlet component may also include a filtrate outlet component, which is disposed on the first base plate.

[0020] Furthermore, the material inlet / outlet component may also include a filtrate outlet component, which is disposed on the second base plate.

[0021] Furthermore, the material inlet / outlet component may also include a loading port component, which is disposed on the first base plate.

[0022] Furthermore, the material inlet / outlet component may also include a loading port component, which is disposed on the second base plate.

[0023] Furthermore, the material inlet / outlet component may also include a discharge port component, which is disposed on the first base plate.

[0024] Furthermore, the material inlet / outlet component may also include a discharge port component, which is disposed on the second base plate.

[0025] Furthermore, the fluid channel is filled with a filter medium.

[0026] Furthermore, the difference in the amount of filter medium filling in each of the two fluid channels is less than 1%.

[0027] Furthermore, the filter medium is in the form of granules, with an average particle diameter ranging from 3 mm to 50 mm.

[0028] Furthermore, the filter medium is one or more of the following: coke particles, activated carbon particles, sand particles, diatomaceous earth particles, molecular sieve particles, and ceramic ball particles.

[0029] Furthermore, the filter medium may include coke particles from the tailings of the coke oven gas.

[0030] And a blast furnace gas desulfurization device, which may include a pretreatment device, an organic sulfur absorption and conversion device, and a filtration device; The pretreatment device is connected to the upstream device of the gas desulfurization device and is configured to pretreat the blast furnace gas discharged from the upstream device of the gas desulfurization device. The organic sulfur absorption and conversion device is connected to the pretreatment device and is configured to desulfurize the pretreated blast furnace gas. The organic sulfur absorption and conversion device contains a desulfurization solvent, which contacts and mixes with the blast furnace gas in the organic sulfur absorption and conversion device to remove organic sulfur from the blast furnace gas. The filtration device is connected to the organic sulfur absorption and conversion device and is configured to filter the desulfurized solvent after desulfurization treatment to remove organic impurities from the desulfurized solvent. The filter device may include an outer cylinder, a first bottom plate, and a second bottom plate; The outer cylinder is cylindrical, with a top end and a bottom end. The top end is sealed to the first bottom plate, and the bottom end is sealed to the second bottom plate. The outer cylinder has an outer wall and an inner wall. The inner wall, together with the first bottom plate and the second bottom plate, forms a filter cavity. At least two fluid channels are provided in the filter cavity along the tangential direction. The fluid channels have the same cross-sectional area. The fluid channel is filled with a filter medium to filter the desulfurized solvent that has undergone desulfurization treatment as it flows through the fluid channel.

[0031] And a coke oven gas desulfurization device, which may include a pretreatment device, an organic sulfur absorption and conversion device, and a filtration device; The pretreatment device is connected to the upstream device of the coke oven gas desulfurization device and is configured to pretreat the coke oven gas discharged from the upstream device of the coke oven gas desulfurization device. The organic sulfur absorption and conversion device is connected to the pretreatment device and is configured to desulfurize the pretreated coke oven gas. The organic sulfur absorption and conversion device contains a desulfurization solvent, which contacts and mixes with the coke oven gas in the organic sulfur absorption and conversion device to remove organic sulfur from the coke oven gas. The filtration device is connected to the organic sulfur absorption and conversion device and is configured to filter the desulfurized solvent after desulfurization treatment to remove organic impurities from the desulfurized solvent. The filter device may include an outer cylinder, a first bottom plate, and a second bottom plate; The outer cylinder is cylindrical, with a top end and a bottom end. The top end is sealed to the first bottom plate, and the bottom end is sealed to the second bottom plate. The outer cylinder has an outer wall and an inner wall. The inner wall, together with the first bottom plate and the second bottom plate, forms a filter cavity. At least two fluid channels are provided in the filter cavity along the tangential direction. The fluid channels have the same cross-sectional area. The fluid channel is filled with a filter medium to filter the desulfurized solvent that has undergone desulfurization treatment as it flows through the fluid channel.

[0032] Furthermore, the filter medium may include coke particles from the tailings of coke oven gas.

[0033] The technical effects of this utility model are as follows: In normal use, traditional filters inevitably have uneven packing density of the filter media. This causes the fluid to preferentially flow in the direction of lower packing density (i.e., lower resistance) during filtration. As a result, more fluid flows through the filter media with lower packing density, while less fluid flows through the filter media with higher packing density. Ultimately, the filter media cannot be used evenly and fully, and the filtration efficiency is greatly reduced.

[0034] Dividing the outer cylinder into at least two fluid channels with uniform cross-sectional area ensures that the fluid can only flow within its own channel without interfering with the fluid in other channels. Even if one fluid channel becomes uneven, it will not affect the flow in other channels. This effectively suppresses the free flow of fluid in the filter medium, making the fluid flow more uniform.

[0035] On the other hand, the flow area of ​​the fluid (the effective cross-sectional area of ​​the fluid in the normal direction) affects the tangential velocity of the fluid. The larger the flow area, the lower the tangential velocity. Ultimately, the flow rate per unit volume in a fluid channel with a larger flow area will be less than that in a fluid channel with a smaller flow area. A larger flow area also means more filter media, which results in more filter media processing less fluid per unit volume, thus reducing the utilization efficiency of the filter media in a fluid channel with a larger flow area. Setting each fluid channel to have the same cross-sectional area can avoid the reduction in filtration efficiency caused by uneven flow area.

[0036] The following will further explain the concept, specific structure and technical effects of this utility model in conjunction with the accompanying drawings, so as to fully understand the purpose, features and effects of this utility model. Attached Figure Description

[0037] Figure 1 This is a schematic diagram of a preferred embodiment of the filtration device of this utility model; Figure 2 This is a schematic diagram of the filter device partition of a preferred embodiment of the present invention; Figure 3 This is a schematic diagram of the normal cross-section of a filter device according to a preferred embodiment of the present invention; Figure 4 This is a schematic diagram of the normal cross-section of a filter device according to another preferred embodiment of the present invention; Among them, 1-filtrate outlet component, 2-feeding port component, 3-partition plate, 31-starting side of partition plate, 32-ending side of partition plate, 33-section profile of partition plate, 4-outer cylinder, 5-central column, 6-discharge port component, 7-filtrate inlet component, 71-opening, 72-hole, 8-first bottom plate, 9-second bottom plate, 10-fluid channel. Detailed Implementation

[0038] The following description, with reference to the accompanying drawings, illustrates several preferred embodiments of the present invention to make it clearer and easier to understand. The present invention can be embodied in many different forms, and the scope of protection of the present invention is not limited to the embodiments mentioned herein.

[0039] In the accompanying drawings, components with the same structure are indicated by the same numerical designation, and components with similar structures or functions are indicated by similar numerical designations. The dimensions and thicknesses of each component shown in the drawings are arbitrary, and this invention does not limit the dimensions and thicknesses of each component. To make the illustrations clearer, the thickness of some components has been appropriately exaggerated in the drawings.

[0040] like Figure 1 The diagram shown is of a filtration device, characterized in that it may include: Outer cylinder 4, first bottom plate 8, second bottom plate 9, material inlet / outlet components; The outer cylinder 4 is cylindrical, with a top and a bottom. The top is sealed to the first bottom plate 8, and the bottom is sealed to the second bottom plate 9. The outer cylinder 4 has an outer wall and an inner wall. The inner wall, together with the first bottom plate 8 and the second bottom plate 9, forms a filter cavity. At least two fluid channels 10 are provided in the filter cavity along the tangential direction. The fluid channels 10 have the same cross-sectional area. Material inlet and outlet components are located on the outer cylinder 4, the first bottom plate 8, or the second bottom plate 9.

[0041] In normal use, traditional filters inevitably have uneven packing density of the filter media. This causes the fluid to preferentially flow in the direction of lower packing density (i.e., lower resistance) during filtration. As a result, more fluid flows through the filter media with lower packing density, while less fluid flows through the filter media with higher packing density. Ultimately, the filter media cannot be used evenly and fully, and the filtration efficiency is greatly reduced.

[0042] The outer cylinder 4 is divided into at least two fluid channels 10 with uniform cross-sectional area. This ensures that the fluid can only flow in its own fluid channel without interfering with the fluid in other fluid channels. Even if there is unevenness in one fluid channel, it will not affect the flow in other fluid channels. This effectively suppresses the free flow of fluid in the filter medium and makes the fluid flow more uniform.

[0043] On the other hand, the flow area of ​​the fluid (the effective cross-sectional area of ​​the fluid in the normal direction) affects the tangential velocity of the fluid. The larger the flow area, the lower the tangential velocity. Ultimately, the flow rate per unit volume in a fluid channel with a larger flow area will be less than that in a fluid channel with a smaller flow area. A larger flow area also means more filter media, which results in more filter media processing less fluid per unit volume, thus reducing the utilization efficiency of the filter media in a fluid channel with a larger flow area. The uniform cross-sectional area of ​​each fluid channel 10 avoids the reduction in filtration efficiency caused by uneven flow area.

[0044] In some embodiments, the filtration device may further include a partition 3 and a central column 5. The central column 5 is a cylinder and is disposed at the center of the filtration cavity. The partition 3 is disposed between the central column 5 and the inner wall of the outer cylinder 4, thereby dividing at least two fluid channels 10 within the filtration cavity.

[0045] In some embodiments, such as Figure 3 The partition 3 shown is a rectangular thin sheet with a straight cross-sectional profile. Its extension line passes through the common center of the outer cylinder 4 and the central column 5. The partition 3 has a first long side and a second long side, which are two tangential sides on the partition 3. The first long side of the partition 3 is connected to the central column 5, and the second long side of the partition 3 is connected to the outer cylinder 4. That is, the partition 3 divides the outer cylinder 4 into at least two fluid channels 10 with the same cross-sectional area along the radial direction of the outer cylinder 4. The cross-sectional area of ​​the fluid channel 10 is an annular sector shape.

[0046] In some embodiments, such as Figure 2 and 4 As shown, the cross-sectional profile 33 of the partition plate is involute. The partition plate 3 has a starting side 31 and a ending side 32. The starting side 31 and the ending side 32 are two sides in the tangential direction on the partition plate 3. The starting side 31 is one side located at the starting position of the involute shape, and the ending side 32 is one side located at the ending position of the involute shape. The starting side 31 is connected to the central column 5, and the ending side 32 is connected to the outer cylinder 4. Thus, the space enclosed by the outer wall of each pair of partition plates 3 and the central column 5 and the inner wall of the outer cylinder 4 is the fluid channel 10. The fluid characteristics of viscous tangential flow include a gradient of tangential velocity along the normal direction, and a normal velocity gradient ( u t / The greater the rate of change of tangential velocity (n) in the normal direction, the more uneven the flow rate will be across different regions of the filter medium—within a unit volume, regions with high tangential velocity will have high flow rates, while regions with low tangential velocity will have low flow rates. This unevenness leads to a decrease in the utilization rate of the filter medium and reduces the overall filtration efficiency. Tangential (t) is the main flow direction of the fluid, while normal (n) refers to the direction perpendicular to the tangential direction. Different cross-sectional area shapes affect the normal velocity gradient; the smaller the rate of change of cross-sectional area per unit distance in the normal direction, the smaller the normal velocity gradient. The fluid channel 10, formed by the outer wall of the central column 5 and the inner wall of the outer cylinder 4, which are composed of two partitions 3 with involute geometric profiles, has a smaller rate of change of cross-sectional area per unit distance in the normal direction compared to other cross-sectional area shapes (such as annular or sector shapes). Therefore, it can make the normal velocity gradient of the fluid smaller, thereby improving the utilization efficiency of the filter medium.

[0047] In some embodiments, the aspect ratio of the fluid channel 10 (the ratio of the tangential length of the partition 3 to the arc length of the cross-sectional profile 33 of the partition) is set to 6.5 to 7.5, which is 30 to 50% higher than that of the conventional type (the aspect ratio of a cylindrical fluid channel designed according to standard is generally in the range of 1 to 5). Increasing the aspect ratio of the fluid channel 10 can further suppress the normal velocity gradient of the fluid.

[0048] In some embodiments, the ratio of the diameter of the central column 5 to the diameter of the outer cylinder 4 is set to 2 to 7, thereby making the cross-sectional shape of the fluid channel 10 have a smaller rate of change of cross-sectional area per unit distance in the normal direction.

[0049] In some embodiments, the filtration device may further include a filtrate inlet component 7, which is disposed at the center of the first base plate 8, and the center is equidistant from the flow path of the fluid channel 10, so that the fluid can flow more evenly to each fluid channel 10.

[0050] In some embodiments, the filtrate inlet component 7 is disposed at the center of the second base plate 9.

[0051] In some embodiments, the filtrate inlet component 7 is cylindrical, having an outer section and an inner section, wherein the outer section is disposed outside the outer cylinder 4, and the inner section is disposed inside the outer cylinder 4.

[0052] In some embodiments, an opening 71 is provided on the outer segment.

[0053] In some embodiments, holes 72 are provided on the inner section, and the holes 72 are evenly distributed on the inner section, so that the fluid can be more evenly distributed to each fluid channel 10, and the flow rate of each fluid channel 10 is more uniform.

[0054] In some embodiments, the central column 5 is connected to the inner section of the filtrate inlet component 7, thereby providing better stability.

[0055] In some embodiments, the filtration device may further include a filtrate outlet component 1, which is disposed on the first base plate 8.

[0056] In some embodiments, the filtrate outlet component 1 is disposed on the second base plate 9.

[0057] In some embodiments, the filtration device may further include a loading port component 2, which is disposed on the first base plate 8.

[0058] In some embodiments, the loading port component 2 is disposed on the second base plate 9.

[0059] In some embodiments, the filtration device may further include a discharge port component 6, which is disposed on the first base plate 8.

[0060] In some embodiments, the discharge port component 6 is disposed on the second base plate 9.

[0061] In some embodiments, the filtrate outlet component 1 is disposed on the feed inlet component 2, thereby reducing the opening on the container head, protecting the structural strength and integrity of the container, and effectively improving the safety of high-pressure operation conditions.

[0062] In some embodiments, there are no fewer than four baffles 3, which divide the outer cylinder 4 into at least four fluid channels 10 with the same cross-sectional area. The number of baffles 3 can be adjusted according to the diameter of the outer cylinder 4. The larger the diameter of the outer cylinder, the more baffles can be set.

[0063] In some embodiments, the fluid channel 10 is filled with a filter medium.

[0064] In some embodiments, the difference in the amount of filter media filling in every two fluid channels 10 is less than 1%, so that the filter media in the fluid channels 10 are distributed as evenly as possible, thereby improving utilization efficiency.

[0065] In some embodiments, the size of the filter medium is 3 to 50 mm.

[0066] In some embodiments, the filter medium can be one or more of the following: coke particles, activated carbon particles, sand, diatomaceous earth particles, molecular sieve particles, and ceramic ball particles. Coke particles, in particular, have significantly higher mechanical strength than traditional activated carbon, greatly improving their resistance to media pulverization caused by organic pollutants and reducing the risk of secondary solvent contamination from filter medium pulverization. Furthermore, because they are less prone to pulverization, there is no need to add a mechanical filter at the filtrate inlet, thereby reducing system operational risks and costs.

[0067] In some embodiments, the filter medium may include coke particles from the tailings of coke oven gas, thereby enabling the use of locally sourced materials and reducing costs.

[0068] In some embodiments, the filtrate inlet component 7 is located at the center of the second base plate 9, the discharge port component is located on the second base plate 9, next to the filtrate inlet component 7, the loading port component 2 is located at the center of the first base plate 8, and the filtrate outlet component 1 is located on the loading port component 2. The liquid to be filtered enters through the opening 71 on the filtrate inlet component 7 and flows evenly through the holes 72 on the filtrate inlet component 7 into each fluid channel 10, each fluid channel 10 being filled with filter media. The liquid to be filtered flows from bottom to top through the filter media in the fluid channel 10, and the filter media filters the flowing liquid to obtain filtered liquid. The filtered liquid flows out through the filtrate outlet component 1. When the filter media becomes ineffective after a period of operation, the filter media is replaced. The process involves blowing out the liquid from the filter media with nitrogen, discharging the ineffective filter media through the discharge port component 6, rinsing the inside of the outer cylinder 4 with water, and then filling each fluid channel 10 in the outer cylinder 4 with new filter media through the loading port component 2.

[0069] In some embodiments, the filtrate inlet component 7 is disposed at the center of the first base plate 8, and the filtrate outlet component 1 is disposed on the second base plate 9. After the liquid to be filtered enters through the filtrate inlet component 7, it flows from top to bottom through the filter medium in the fluid channel 10, and then flows out from the filtrate outlet component 1.

[0070] A blast furnace gas desulfurization device may include a pretreatment device, an organic sulfur absorption and conversion device, and a filtration device; The pretreatment unit is connected to the upstream unit of the blast furnace gas desulfurization unit and is configured to pretreat the blast furnace gas discharged from the upstream unit of the blast furnace gas desulfurization unit. The organic sulfur absorption and conversion device is connected to the pretreatment device and is configured to desulfurize the pretreated blast furnace gas. The organic sulfur absorption and conversion device contains a desulfurization solvent, which contacts and mixes with the blast furnace gas in the organic sulfur absorption and conversion device to remove organic sulfur from the blast furnace gas. The filtration device is connected to the organic sulfur absorption and conversion device and is configured to filter the desulfurization solvent after desulfurization treatment to remove organic impurities from the desulfurization solvent after desulfurization treatment; the organic impurities may include the products of physical and / or chemical reactions between organic matter in blast furnace gas and desulfurization solvent. The filtration device may include an outer cylinder 4, a first bottom plate 8, and a second bottom plate 9; The outer cylinder 4 is cylindrical, with a top end and a bottom end. The top end is sealed to the first bottom plate 8, and the bottom end is sealed to the second bottom plate 9. The outer cylinder 4 has an outer wall and an inner wall. The inner wall, together with the first bottom plate 8 and the second bottom plate 9, forms a filter cavity. At least two fluid channels 10 are provided in the filter cavity along the tangential direction. The fluid channels 10 have the same cross-sectional area. The fluid channel 10 is filled with a filter medium to filter the desulfurization solvent that has undergone desulfurization treatment and flows through the fluid channel 10. The filtration device may also include a filtrate inlet component 7 and a filtrate outlet component 1, wherein the filtrate inlet component 7 is disposed on the first base plate 8 and the filtrate outlet component 1 is disposed on the second base plate 9; The filtrate inlet component 7 is connected to the organic sulfur absorption and conversion device. The desulfurized solvent that has been desulfurized and flows out of the organic sulfur absorption and conversion device flows into the filtration device from the filtrate inlet component 7 and flows out from the filtrate outlet component 1.

[0071] In some embodiments, the filtrate inlet component 7 is disposed on the second base plate 9, and the filtrate outlet component 1 is disposed on the first base plate 8.

[0072] In some embodiments, the upstream unit of the blast furnace gas desulfurization unit can be a blast furnace gas residual pressure turbine power generation unit.

[0073] And a coke oven gas desulfurization device, which may include a pretreatment device, an organic sulfur absorption and conversion device, and a filtration device. The pretreatment device is connected to the upstream device of the coke oven gas desulfurization device and is configured to pretreat the coke oven gas discharged from the upstream device of the coke oven gas desulfurization device. The organic sulfur absorption and conversion device is connected to the pretreatment device and is configured to desulfurize the pretreated coke oven gas. The organic sulfur absorption and conversion device contains a desulfurization solvent, which contacts and mixes with the coke oven gas in the organic sulfur absorption and conversion device to remove organic sulfur from the coke oven gas. The filtration device is connected to the organic sulfur absorption and conversion device and is configured to filter the desulfurization solvent after desulfurization treatment to remove organic impurities from the desulfurization solvent after desulfurization treatment; the organic impurities may include the products of physical and / or chemical reactions between organic matter in coke oven gas (such as benzene and benzene series compounds, naphthalene, phenol, etc.) and the desulfurization solvent. The filtration device may include an outer cylinder 4, a first bottom plate 8, and a second bottom plate 9; The outer cylinder 4 is cylindrical, with a top end and a bottom end. The top end is sealed to the first bottom plate 8, and the bottom end is sealed to the second bottom plate 9. The outer cylinder 4 has an outer wall and an inner wall. The inner wall, together with the first bottom plate 8 and the second bottom plate 9, forms a filter cavity. At least two fluid channels 10 are provided in the filter cavity along the tangential direction. The fluid channels 10 have the same cross-sectional area. The fluid channel 10 is filled with a filter medium to filter the desulfurization solvent that has undergone desulfurization treatment and flows through the fluid channel 10. The filtration device may also include a filtrate inlet component 7 and a filtrate outlet component 1, wherein the filtrate inlet component 7 is disposed on the first base plate 8 and the filtrate outlet component 1 is disposed on the second base plate 9; The filtrate inlet component 7 is connected to the organic sulfur absorption and conversion device. The desulfurized solvent that has been desulfurized and flows out of the organic sulfur absorption and conversion device flows into the filtration device from the filtrate inlet component 7 and flows out from the filtrate outlet component 1.

[0074] In some embodiments, the filter medium may include coke particles in the tail gas of the coke oven.

[0075] In some embodiments, the filtrate inlet component 7 is disposed on the second base plate 9, and the filtrate outlet component 1 is disposed on the first base plate 8.

[0076] In some embodiments, the upstream unit of the coke oven gas desulfurization unit may be a coke oven gas primary cooling unit, a coke oven gas ammonia removal unit, a coke oven gas naphthalene removal unit, or a coke oven gas crude benzene recovery unit.

[0077] The preferred embodiments of this utility model have been described in detail above. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of this utility model without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of this utility model through logical analysis, reasoning, or limited experimentation on the basis of existing technology should be within the scope of protection defined by the claims.

Claims

1. A filtration device, characterized in that, Includes outer cylinder, first bottom plate, second bottom plate, and material inlet / outlet components; The outer cylinder is cylindrical, with a top end and a bottom end. The top end is sealed to the first bottom plate, and the bottom end is sealed to the second bottom plate. The outer cylinder has an outer wall and an inner wall. The inner wall, together with the first bottom plate and the second bottom plate, forms a filter cavity. At least two fluid channels are provided in the filter cavity along the tangential direction. The fluid channels have the same cross-sectional area. The material inlet / outlet components are disposed on the outer cylinder, the first bottom plate, or the second bottom plate; The filtration device also includes a partition and a central column; The central column is disposed tangentially at the center of the filter cavity, and the partition is disposed between the central column and the inner wall of the outer cylinder to separate at least two fluid channels within the filter cavity.

2. The filtration device as described in claim 1, characterized in that, The partition has an involute geometry in cross-section and has a starting side and a ending side. The starting side is connected to the central column and the ending side is connected to the inner wall of the outer cylinder.

3. The filtration device as described in claim 2, characterized in that, The ratio of the tangential length of the partition to the arc length of the cross-sectional profile of the partition is greater than or equal to 6.5 and less than or equal to 7.

5.

4. The filtration device as described in claim 1, characterized in that, The ratio of the diameter of the central column to the diameter of the outer cylinder is greater than or equal to 2 and less than or equal to 7.

5. The filtration device as claimed in claim 1, characterized in that, The material inlet and outlet components include a filtrate inlet component, which is located at the center of the first base plate.

6. The filtration device as claimed in claim 1, characterized in that, The material inlet and outlet components include a filtrate inlet component, which is located at the center of the second base plate.

7. The filtration device as described in claim 5 or 6, characterized in that, The filtrate inlet component is cylindrical, having an outer section and an inner section. The outer section is located outside the outer cylinder, and the inner section is located inside the outer cylinder.

8. The filtration device as claimed in claim 7, characterized in that, An opening is provided on the outer section of the filtrate inlet component.

9. The filtration device as claimed in claim 7, characterized in that, The inner section of the filtrate inlet component is provided with holes, which are evenly distributed on the outer surface of the inner section.

10. The filtration device as claimed in claim 7, characterized in that, The central column is connected to the inner section.

11. The filtration device as claimed in claim 1, characterized in that, It also includes a filtrate outlet component, which is disposed on the first base plate.

12. The filtration device as claimed in claim 1, characterized in that, The fluid channel is filled with filter media.

13. The filtration device as claimed in claim 12, characterized in that, The difference in the amount of filter media filling in any two fluid channels is less than 1%.

14. The filtration device as claimed in claim 12, characterized in that, The filter medium is granular, with an average particle diameter ranging from 3 mm to 50 mm.

15. A blast furnace gas desulfurization device, characterized in that, Includes pretreatment equipment, organic sulfur absorption and conversion equipment, and filtration equipment; The pretreatment device is connected to the upstream device of the gas desulfurization device and is configured to pretreat the blast furnace gas discharged from the upstream device of the gas desulfurization device. The organic sulfur absorption and conversion device is connected to the pretreatment device and is configured to desulfurize the pretreated blast furnace gas. The organic sulfur absorption and conversion device contains a desulfurization solvent, which contacts and mixes with the blast furnace gas in the organic sulfur absorption and conversion device to remove organic sulfur from the blast furnace gas. The filtration device is connected to the organic sulfur absorption and conversion device and is configured to filter the desulfurized solvent after desulfurization treatment to remove organic impurities from the desulfurized solvent. The filter device includes an outer cylinder, a first bottom plate, and a second bottom plate; The outer cylinder is cylindrical, with a top end and a bottom end. The top end is sealed to the first bottom plate, and the bottom end is sealed to the second bottom plate. The outer cylinder has an outer wall and an inner wall. The inner wall, together with the first bottom plate and the second bottom plate, forms a filter cavity. At least two fluid channels are provided in the filter cavity along the tangential direction. The fluid channels have the same cross-sectional area. The fluid channel is filled with a filter medium to filter the desulfurized solvent that has undergone desulfurization treatment as it flows through the fluid channel.

16. A coke oven gas desulfurization device, characterized in that, Includes pretreatment equipment, organic sulfur absorption and conversion equipment, and filtration equipment; The pretreatment device is connected to the upstream device of the coke oven gas desulfurization device and is configured to pretreat the coke oven gas discharged from the upstream device of the coke oven gas desulfurization device. The organic sulfur absorption and conversion device is connected to the pretreatment device and is configured to desulfurize the pretreated coke oven gas. The organic sulfur absorption and conversion device contains a desulfurization solvent, which contacts and mixes with the coke oven gas in the organic sulfur absorption and conversion device to remove organic sulfur from the coke oven gas. The filtration device is connected to the organic sulfur absorption and conversion device and is configured to filter the desulfurized solvent after desulfurization treatment to remove organic impurities from the desulfurized solvent. The filter device includes an outer cylinder, a first bottom plate, and a second bottom plate; The outer cylinder is cylindrical, with a top end and a bottom end. The top end is sealed to the first bottom plate, and the bottom end is sealed to the second bottom plate. The outer cylinder has an outer wall and an inner wall. The inner wall, together with the first bottom plate and the second bottom plate, forms a filter cavity. At least two fluid channels are provided in the filter cavity along the tangential direction. The fluid channels have the same cross-sectional area. The fluid channel is filled with a filter medium to filter the desulfurized solvent that has undergone desulfurization treatment as it flows through the fluid channel.

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