Fine desulfurization pretreatment device for blast furnace gas

Abstract

The utility model provides a blast furnace gas fine desulfurization pretreatment device, which relates to the technical field of gas desulfurization, and comprises a shell and a plurality of guide vanes, a gas inlet chamber and a catalyst filling chamber which are communicated with each other are arranged in the shell; the multiple guide vanes are arranged at the communicating position of the air inlet chamber and the catalyst filling chamber at intervals in parallel in the first direction, the distance between every two adjacent guide vanes is smaller than the particle size of a catalyst, and the ends, facing the air inlet chamber, of the guide vanes are obliquely arranged downwards. According to the utility model, the probability that dust and moisture in coal gas directly enter the catalyst filling chamber can be effectively reduced, the risk that a catalyst is blocked and caked at the communication part of the gas inlet chamber and the catalyst filling chamber is effectively reduced, and the service life of the catalyst is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of coal gas desulfurization, in particular to a blast furnace coal gas fine desulfurization pretreatment device. Background Art

[0002] At present, blast furnace gas is one of the most important secondary energy sources for steel enterprises. It is used as fuel for combustion and heating, and the gas use points are distributed in various areas of steel plants. During the blast furnace ironmaking process, sulfur, chlorine and other elements contained in iron ore, sintered ore, coke and coal will react with other substances to generate carbonyl sulfide (COS), hydrosulfide (H2S) and hydrochloric acid (HCl) and enter the blast furnace gas. Gas containing carbonyl sulfide (COS) and hydrosulfide (H2S) will generate sulfur dioxide during the combustion process. Desulfurization of blast furnace gas can effectively reduce the sulfur dioxide generated during the combustion of blast furnace gas, playing a role in source control.

[0003] In the related technology, the commonly used process route for fine desulfurization of blast furnace gas is that the blast furnace gas after dry dust removal enters the pretreatment device to remove the acidic gas therein, and then the organic sulfur (mainly carbonyl sulfide) in the gas is converted into sulfide in the hydrolysis device, and finally the sulfide is absorbed by the alkaline desulfurizer in the desulfurization device, and the purified blast furnace gas is sent to the gas pipeline network to each gas usage point.

[0004] However, the inventors realized that in actual use, since there is still a certain amount of dust and moisture in the blast furnace gas after dry dust removal, in conventional pretreatment devices, the windward side of the catalyst filling chamber mostly adopts a mesh or hole-type structure, and the gas is in direct contact with the catalyst, which often causes blockage and agglomeration of the channels in the catalyst filling chamber, thereby reducing the service life of the catalyst, uneven pretreatment reaction, and increased equipment pressure loss, which makes the economic efficiency of the project operation worse. Utility Model Content

[0005] The problem solved by the utility model is how to effectively reduce the risk of pore blockage and agglomeration caused by the catalyst.

[0006] In order to solve the above problems, the utility model provides a blast furnace gas desulfurization pretreatment device, including a shell and a plurality of guide vanes, the interior of the shell is provided with an air intake chamber and a catalyst filling chamber which are interconnected, the plurality of guide vanes are spaced apart along a first direction and arranged in parallel at the connection between the air intake chamber and the catalyst filling chamber, the distance between two adjacent guide vanes is smaller than the catalyst particle size, and the guide vanes are arranged inclined downward at one end toward the air intake chamber.

[0007] Optionally, the blast furnace gas fine desulfurization pretreatment device also includes a first partition unit, which is arranged inside the shell to separate the air intake chamber and the catalyst filling chamber, and the first partition unit is provided with a first opening connecting the air intake chamber and the catalyst filling chamber, and the guide vane is arranged at the first opening.

[0008] Optionally, the first partition unit includes a first material sealing plate, a second material sealing plate and a first frame assembly, the first material sealing plate and the second material sealing plate are spaced apart and respectively sealed with the inner top wall and the inner bottom wall of the shell, the first frame assembly includes a plurality of first vertical ribs and a plurality of first transverse ribs, the plurality of first transverse ribs are spaced apart and arranged in parallel along the first direction and fixedly connected to the inner wall of the shell, the first first transverse rib is sealed with the first material sealing plate in the first direction, the last first transverse rib is sealed with the second material sealing plate in the first direction, and the first vertical rib is connected between two adjacent first transverse ribs to separate at least two of the first openings.

[0009] Optionally, the blast furnace gas fine desulfurization pretreatment device also includes a pore plate, the pore size of the pore plate is smaller than the catalyst particle size, the interior of the shell is also provided with an outlet chamber connected to the catalyst filling chamber, and the pore plate is arranged at the connection between the outlet chamber and the catalyst filling chamber.

[0010] Optionally, the blast furnace gas desulfurization pretreatment device also includes a second partition unit, and the first partition unit and the second partition unit are spaced apart and arranged relatively inside the shell to divide the interior of the shell into the air inlet chamber, the catalyst filling chamber and the air outlet chamber arranged in sequence along the second direction, the second partition unit is provided with a second opening passing through along the second direction, the air hole plate is arranged at the second opening, and the first direction and the second direction intersect with each other.

[0011] Optionally, the second partition unit includes a third material sealing plate, a fourth material sealing plate and a second frame assembly, the third material sealing plate and the fourth material sealing plate are spaced apart and sealedly connected to the inner top wall and the inner bottom wall of the shell, respectively, the second frame assembly includes a plurality of second vertical ribs and a plurality of second transverse ribs, the plurality of second transverse ribs are spaced apart and parallel along the first direction and fixedly connected to the inner wall of the shell, the first second transverse rib is sealedly connected to the third material sealing plate in the first direction, the last second transverse rib is sealedly connected to the fourth material sealing plate in the first direction, and the second vertical ribs are connected between two adjacent first transverse ribs to separate at least two second openings.

[0012] Optionally, at least one of the second material sealing plate, the third material sealing plate and the fourth material sealing plate is provided with a through-going air hole, and the aperture of the air hole is smaller than the catalyst particle diameter.

[0013] Optionally, the shell includes an upper head, a lower head and an intermediate cylinder, the intermediate cylinder is connected between the upper head and the lower head, the first material sealing plate and the third material sealing plate are arranged inside the upper head, the second material sealing plate and the fourth material sealing plate are arranged inside the lower head, and the first frame assembly and the second frame assembly are arranged inside the intermediate cylinder.

[0014] Optionally, the outer wall of the shell is provided with an air inlet and a first manhole communicating with the air inlet chamber;

[0015] And / or, the outer wall of the shell is provided with an air outlet and a second manhole communicating with the air outlet chamber.

[0016] Optionally, the outer wall of the shell is further provided with a purge port communicating with the air inlet chamber.

[0017] Compared with the prior art, the beneficial effects of the utility model are:

[0018] The interior of the shell is provided with an air intake chamber and a catalyst filling chamber which are interconnected. When the blast furnace gas fine desulfurization pretreatment device introduces coal gas, the coal gas first enters the air intake chamber and then enters the catalyst filling chamber. The air intake chamber can effectively precipitate dust and moisture in the coal gas. A plurality of guide blades are arranged in parallel at the connecting part of the air intake chamber and the catalyst filling chamber along a first direction, for example, vertically spaced. The spacing between two adjacent guide blades is smaller than the catalyst particle size. In this way, the catalyst can be effectively restricted from leaking out of the connecting part of the air intake chamber and the catalyst filling chamber. One end of the guide blade facing the air intake chamber is inclined downward, that is, one end of the guide blade facing the air intake chamber is an inclined surface extending downward, so the coal gas needs to flow upward first when entering the channel between the two adjacent guide blades. The guide blade can effectively reduce the probability of dust and moisture in the coal gas directly entering the catalyst filling chamber, which not only effectively reduces the risk of clogging and agglomeration of the catalyst at the connecting part of the air intake chamber and the catalyst filling chamber, but also improves the service life of the catalyst. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is one of the cross-sectional structural schematic diagrams of the blast furnace gas fine desulfurization pretreatment device in the embodiment of the utility model;

[0020] Figure 2 for Figure 1 Schematic diagram of the local structure in the middle A direction;

[0021] Figure 3 for Figure 1 Schematic diagram of the local structure in the middle B direction;

[0022] Figure 4 for Figure 1 Schematic diagram of the enlarged structure at C in the middle;

[0023] Figure 5 for Figure 1 Schematic diagram of the enlarged structure at D in the middle;

[0024] Figure 6 This is the second schematic cross-sectional structure diagram of the blast furnace gas fine desulfurization pretreatment device in the embodiment of the utility model;

[0025] Figure 7 It is an external schematic diagram of the blast furnace gas fine desulfurization pretreatment device in the embodiment of the utility model.

[0026] Description of reference numerals:

[0027] 1. Shell; 11. Air inlet chamber; 12. Catalyst filling chamber; 13. Air outlet chamber; 14. Intermediate cylinder; 141. Air inlet; 142. Air outlet; 143. Purge port; 15. Upper end cap; 151. First manhole; 152. Second manhole; 153. Feed inlet; 16. Lower end cap; 161. Discharge port; 2. Guide vane; 3. First material sealing plate; 4. First frame assembly; 41. First transverse rib; 42. First vertical rib; 5. Second material sealing plate; 6. Air hole plate; 7. Third material sealing plate; 8. Second frame assembly; 81. Second transverse rib; 82. Second vertical rib; 9. Fourth material sealing plate; 10. Catalyst. DETAILED DESCRIPTION

[0028] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and understandable, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0029] It should be noted that the terms "first", "second", etc. in the specification and claims of the present utility model and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the utility model described herein can be implemented in an order other than those illustrated or described herein.

[0030] like Figure 1 , 4As shown, an embodiment of the utility model provides a blast furnace gas desulfurization pretreatment device, including a shell 1 and a plurality of guide vanes 2. The interior of the shell 1 is provided with an air intake chamber 11 and a catalyst filling chamber 12 which are interconnected. The plurality of guide vanes 2 are spaced apart and arranged in parallel along a first direction at the connection between the air intake chamber 11 and the catalyst filling chamber 12. The distance between two adjacent guide vanes 2 is smaller than the particle size of the catalyst 10. The guide vane 2 is inclined downward at one end facing the air intake chamber 11.

[0031] It should be understood that the first direction is the up and down direction, that is, the direction where the Z axis is located.

[0032] According to the technical solution of this embodiment, the interior of the housing 1 is provided with an air inlet chamber 11 and a catalyst filling chamber 12 which are interconnected. When the blast furnace gas fine desulfurization pretreatment device is fed with coal gas, the coal gas first enters the air inlet chamber 11 and then enters the catalyst filling chamber 12. The air inlet chamber 11 can effectively precipitate dust and moisture in the coal gas. A plurality of guide blades 2 are vertically spaced and arranged in parallel at the connection between the air inlet chamber 11 and the catalyst filling chamber 12. The spacing between two adjacent guide blades 2 is smaller than the particle size of the catalyst 10. In this way, the catalyst 10 can be effectively restricted from entering the air inlet chamber 11 and the catalyst filling chamber. That is to say, the end of the guide vane 2 facing the air inlet chamber 11 is a slope extending downward. Therefore, the coal gas needs to flow upward first when entering the channel between two adjacent guide vanes 2. The slope of the guide vane 2 can effectively reduce the probability of dust and moisture in the coal gas directly entering the catalyst filling chamber 12, which not only effectively reduces the risk of catalyst 10 being blocked and agglomerated at the connection between the air inlet chamber 11 and the catalyst filling chamber 12, but also improves the service life of the catalyst 10.

[0033] Optionally, the blast furnace gas desulfurization pretreatment device also includes a first partition unit, which is arranged inside the shell 1 to separate the air intake chamber 11 and the catalyst filling chamber 12, and the first partition unit is provided with a first opening connecting the air intake chamber 11 and the catalyst filling chamber 12, and the guide vane 2 is arranged at the first opening.

[0034] In this embodiment, the number of the first openings may be one, two, three, etc. There is no limitation here and it depends on actual needs.

[0035] Optionally, the first partition unit includes a first material sealing plate 3, a second material sealing plate 5 and a first frame assembly 4, the first material sealing plate 3 and the second material sealing plate 5 are arranged at intervals and are respectively sealed to the inner top wall and the inner bottom wall of the shell 1, the first frame assembly 4 includes a plurality of first vertical ribs 42 and a plurality of first transverse ribs 41, the plurality of first transverse ribs 41 are arranged at intervals and in parallel along the first direction and are fixedly connected to the inner wall of the shell 1, the first first transverse rib 41 is sealed to the first material sealing plate 3 in the first direction, the last first transverse rib 41 is sealed to the second material sealing plate 5 in the first direction, and a first vertical rib 42 is connected between two adjacent first transverse ribs 41 to separate at least two first openings.

[0036] In this embodiment, the shapes of the first material sealing plate 3 and the second material sealing plate 5 are designed according to the shapes of the inner top wall and the inner bottom wall of the housing 1, such as Figure 2 As shown, when the inner top wall and the inner bottom wall of the shell 1 are arc surfaces, the top end of the first material sealing plate 3 is an arc shape matching the inner top wall of the shell 1, and the top end of the second material sealing plate 5 is an arc shape matching the inner bottom wall of the shell 1. During production, the first material sealing plate 3 and the second material sealing plate 5 are respectively arranged vertically inside the shell 1, and the arc section of the first material sealing plate 3 is welded to the inner top wall of the shell 1, and the arc section of the second material sealing plate 5 is welded to the inner bottom wall of the shell 1.

[0037] In this embodiment, Figure 1 , 6 As shown, the first frame assembly 4 includes six first vertical ribs 42 and three first transverse ribs 41. The three first transverse ribs 41 are spaced vertically and arranged in parallel and are welded and fixed to the inner wall of the shell 1. The first first transverse rib 41 is welded and sealed vertically to the first material sealing plate 3. The second first transverse rib 41 is welded and fixed to the middle section of the inner wall of the shell 1. The last first transverse rib 41 is welded and sealed vertically to the second material sealing plate 5. Three first vertical ribs 42 are connected between two adjacent first transverse ribs 41, which are parallel and spaced in the direction of the X-axis to separate two first openings. The end faces of the two first vertical ribs 42 at the two ends are facing away from each other and fit tightly to the inner wall of the shell 1. During production, when the guide blade 2 is installed in the first opening, the two ends of the guide blade 2 are welded and fixed to the two adjacent first vertical ribs 42 respectively.

[0038] It should be noted that the welding point between the first material sealing plate 3 and the inner wall of the shell 1 and the welding point between the first material sealing plate 3 and the first first transverse rib 41 must be fully welded to prevent gas short circuit.

[0039] Optionally, the blast furnace gas fine desulfurization pretreatment device also includes an air hole plate 6, the pore size of the air hole plate 6 is smaller than the particle size of the catalyst 10, and the interior of the shell 1 is also provided with an air outlet chamber 13 connected to the catalyst filling chamber 12, and the air hole plate 6 is arranged at the connection point between the air outlet chamber 13 and the catalyst filling chamber 12.

[0040] In this way, after the coal gas passes through the catalyst 10 in the catalyst filling chamber 12, the purified coal gas can flow into the gas outlet chamber 13 through the air hole plate 6. Since the pore size of the air hole plate 6 is smaller than the particle size of the catalyst 10, it can effectively prevent the catalyst 10 from leaking into the gas outlet chamber 13.

[0041] Optionally, the blast furnace gas desulfurization pretreatment device also includes a second partition unit. The first partition unit and the second partition unit are spaced apart and arranged relatively inside the shell 1 to divide the interior of the shell 1 into an air inlet chamber 11, a catalyst filling chamber 12 and an air outlet chamber 13 arranged in sequence along the second direction. The second partition unit is provided with a second opening penetrating along the second direction, and the air hole plate 6 is arranged at the second opening, and the first direction and the second direction intersect with each other.

[0042] In this embodiment, the second direction is the left-right direction, that is, the direction where the Y axis is located.

[0043] like Figure 1 As shown, the first separation unit and the second separation unit are spaced apart along the left-right direction and relatively arranged inside the shell 1, so as to divide the interior of the shell 1 into an air inlet chamber 11, a catalyst filling chamber 12 and an air outlet chamber 13 which are arranged in sequence along the left-right direction. In this way, part of the boundary of the catalyst filling chamber 12 is formed by the inner wall of the shell 1, and the filling amount of the catalyst 10 is larger than that of the equipment of the same specification, thereby effectively improving the gas processing capacity of the pretreatment device.

[0044] In this embodiment, Figure 5 As shown, the second partition unit is provided with a second opening penetrating along the left-right direction, and the air hole plate 6 is arranged at the second opening. Thus, after the coal gas passes through the catalyst 10 in the catalyst filling chamber 12, the purified coal gas can flow into and out of the gas chamber 13 through the air hole plate 6 at the second opening.

[0045] In this embodiment, the number of the second openings may be one, two, three, etc. There is no limitation here and it depends on actual needs.

[0046] In this embodiment, the catalyst 10 loading chamber is an independent area, and the thickness of the reaction bed can be adjusted by setting the distance between the guide vane 2 and the air hole plate 6, thereby ensuring that the gas pressure loss of the equipment is adjustable.

[0047] Optionally, the second partition unit includes a third material sealing plate 7, a fourth material sealing plate 9 and a second frame assembly 8. The third material sealing plate 7 and the fourth material sealing plate 9 are spaced apart and sealedly connected to the inner top wall and the inner bottom wall of the shell 1 respectively. The second frame assembly 8 includes a plurality of second vertical ribs 82 and a plurality of second transverse ribs 81. The plurality of second transverse ribs 81 are spaced apart along the first direction and fixedly connected to the inner wall of the shell 1. The first second transverse rib 81 and the third material sealing plate 7 are in contact with each other in the first direction. The last second transverse rib 81 and the fourth material sealing plate 9 are in contact with each other in the first direction. A second vertical rib (82) is connected between two adjacent second transverse ribs 81 to separate at least two second openings.

[0048] In this embodiment, the shapes of the third material sealing plate 7 and the fourth material sealing plate 9 are designed according to the shapes of the inner top wall and the inner bottom wall of the housing 1, such as Figure 2 As shown, when the inner top wall and the inner bottom wall of the shell 1 are arc surfaces, the top end of the third material sealing plate 7 is an arc shape matching the inner top wall of the shell 1, and the top end of the fourth material sealing plate 9 is an arc shape matching the inner bottom wall of the shell 1. During production, the third material sealing plate 7 and the fourth material sealing plate 9 are respectively arranged vertically inside the shell 1, and the arc section of the third material sealing plate 7 is welded to the inner top wall of the shell 1, and the arc section of the fourth material sealing plate 9 is welded to the inner bottom wall of the shell 1.

[0049] In this embodiment, the second frame assembly 8 includes six second vertical ribs 82 and three second transverse ribs 81. The three second transverse ribs 81 are spaced apart and arranged in parallel along the vertical direction and are welded and fixed to the inner wall of the shell 1. The first second transverse rib 81 is welded and sealed vertically to the third material sealing plate 7. The second second transverse rib 81 is welded and fixed to the middle section of the inner wall of the shell 1. The last second transverse rib 81 is welded and sealed vertically to the fourth material sealing plate 9. Three second vertical ribs 82 are parallel and spaced apart in the direction of the X-axis to separate the two second openings. The end faces of the two second vertical ribs 82 at the two ends are facing away from each other and fit tightly to the inner wall of the shell 1. During production, when the air hole plate 6 is installed in the second opening, the four sides of the air hole plate 6 are welded and fixed to the adjacent second transverse ribs 81 and second vertical ribs 82 respectively.

[0050] It should be noted that the welding points between the third sealing plate 7 and the inner wall of the shell 1 and the welding points between the third sealing plate 7 and the first second transverse rib 81 must be fully welded to prevent gas short circuit.

[0051] Optionally, at least one of the second material sealing plate 5 , the third material sealing plate 7 and the fourth material sealing plate 9 is provided with a through-going air hole, and the aperture of the air hole is smaller than the particle diameter of the catalyst 10 .

[0052] In one embodiment, the second material sealing plate 5, the third material sealing plate 7 and the fourth material sealing plate 9 are all provided with through-holes. In other embodiments, only the third material sealing plate 7 and the fourth material sealing plate 9 may be provided with through-holes. Other embodiments will not be further listed.

[0053] Optionally, the shell 1 includes an upper head 15, a lower head 16 and an intermediate cylinder 14, the intermediate cylinder 14 is connected between the upper head 15 and the lower head 16, the first material sealing plate 3 and the third material sealing plate 7 are arranged inside the upper head 15, the second material sealing plate 5 and the fourth material sealing plate 9 are arranged inside the lower head 16, and the first frame assembly 4 and the second frame assembly 8 are arranged inside the intermediate cylinder 14.

[0054] like Figure 1 As shown, the shell 1 is a cavity structure composed of an intermediate cylinder 14, an upper head 15, and a lower head 16. The first material sealing plate 3 and the third material sealing plate 7 are arranged inside the upper head 15, the second material sealing plate 5 and the fourth material sealing plate 9 are arranged inside the lower head 16, and the first frame assembly 4 and the second frame assembly 8 are arranged inside the intermediate cylinder 14. In this way, when the shell 1 is produced, the intermediate cylinder 14, the upper head 15, and the lower head 16 can be modularly produced first, and then welded and assembled. The modular assembly method effectively improves production efficiency.

[0055] Optionally, the outer wall of the shell 1 is provided with an air inlet 141 and a first manhole 151 communicating with the air inlet chamber 11 ; and / or, the outer wall of the shell 1 is provided with an air outlet 142 and a second manhole 152 communicating with the air outlet chamber 13 .

[0056] like Figure 1 , 7 As shown, the air inlet 141 and the air outlet 142 are respectively arranged at the upper left end and the lower right end of the intermediate cylinder 14, which are used for the air intake and air outlet of the blast furnace gas fine desulfurization pretreatment device. The first manhole 151 and the second manhole 152 are arranged on the left and right sides of the upper head 15, and are respectively connected with the air inlet chamber 11 and the air outlet chamber 13, so that maintenance personnel can enter the air inlet chamber 11 and the air outlet chamber 13 for inspection and maintenance.

[0057] Optionally, the outer wall of the shell 1 is further provided with a purge port 143 communicating with the air inlet chamber 11 .

[0058] like Figure 1 As shown, the purge port 143 is disposed at the upper left end of the intermediate cylinder 14, and is used to introduce an inert gas such as nitrogen, so as to discharge the gas inside the shell 1 when the equipment is started or overhauled.

[0059] Optionally, the outer wall of the housing 1 is further provided with a feed inlet 153 and a discharge port 161 which are in communication with the catalyst filling chamber 12 .

[0060] like Figure 1 As shown, the feed port 153 is arranged at the top end of the upper head 15 for loading the catalyst 10 ; the discharge port is arranged at the bottom end of the lower head 16 for discharging the spent catalyst 10 .

[0061] The reader should understand that in the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples without contradiction.

[0062] Although the utility model is disclosed as above, the protection scope of the utility model is not limited thereto. Those skilled in the art may make various changes and modifications without departing from the spirit and scope of the utility model, and these changes and modifications will fall within the protection scope of the utility model.

Claims

1. A blast furnace gas desulfurization pretreatment device, characterized in that: The invention comprises a shell (1) and a plurality of guide vanes (2); the shell (1) is provided with an air intake chamber (11) and a catalyst filling chamber (12) which are connected to each other; the plurality of guide vanes (2) are arranged in parallel and spaced apart along a first direction at the connection point between the air intake chamber (11) and the catalyst filling chamber (12); the spacing between two adjacent guide vanes (2) is smaller than the particle size of the catalyst (10); and the guide vanes (2) are arranged with one end facing the air intake chamber (11) and tilted downward.

2. The blast furnace gas fine desulfurization pretreatment device according to claim 1 is characterized in that: The invention also comprises a first partition unit, which is arranged inside the shell (1) to separate the air intake chamber (11) and the catalyst filling chamber (12), and the first partition unit is provided with a first opening connecting the air intake chamber (11) and the catalyst filling chamber (12), and the guide vane (2) is arranged at the first opening.

3. The blast furnace gas fine desulfurization pretreatment device according to claim 2 is characterized in that: The first partition unit comprises a first material sealing plate (3), a second material sealing plate (5) and a first frame assembly (4); the first material sealing plate (3) and the second material sealing plate (5) are spaced apart and respectively sealed to the inner top wall and the inner bottom wall of the shell (1); the first frame assembly (4) comprises a plurality of first vertical ribs (42) and a plurality of first transverse ribs (41); the plurality of first transverse ribs (41) are spaced apart and arranged in parallel along the first direction and fixedly connected to the inner wall of the shell (1); the first first transverse rib (41) is sealed to the first material sealing plate (3) in the first direction; the last first transverse rib (41) is sealed to the second material sealing plate (5) in the first direction; the first vertical rib (42) is connected between two adjacent first transverse ribs (41) to separate at least two first openings.

4. The blast furnace gas fine desulfurization pretreatment device according to claim 3 is characterized in that: It also comprises an air hole plate (6), the aperture of which is smaller than the particle size of the catalyst (10); the interior of the shell (1) is also provided with an air outlet chamber (13) connected to the catalyst filling chamber (12); the air hole plate (6) is arranged at the connection point between the air outlet chamber (13) and the catalyst filling chamber (12).

5. The blast furnace gas fine desulfurization pretreatment device according to claim 4 is characterized in that: The invention also comprises a second partition unit, wherein the first partition unit and the second partition unit are arranged in a spaced relationship and opposite to each other inside the shell (1), so as to divide the inside of the shell (1) into the air inlet chamber (11), the catalyst filling chamber (12) and the air outlet chamber (13) which are arranged in sequence along a second direction, the second partition unit is provided with a second opening penetrating along the second direction, the air hole plate (6) is arranged at the second opening, and the first direction and the second direction intersect each other.

6. The blast furnace gas fine desulfurization pretreatment device according to claim 5, characterized in that: The second partition unit comprises a third material sealing plate (7), a fourth material sealing plate (9) and a second frame assembly (8); the third material sealing plate (7) and the fourth material sealing plate (9) are spaced apart and sealedly connected to the inner top wall and the inner bottom wall of the shell (1), respectively; the second frame assembly (8) comprises a plurality of second vertical ribs (82) and a plurality of second transverse ribs (81); the plurality of second transverse ribs (81) are spaced apart and arranged in parallel along the first direction and fixedly connected to the inner wall of the shell (1); the first second transverse rib (81) is sealedly connected to the third material sealing plate (7) in the first direction; the last second transverse rib (81) is sealedly connected to the fourth material sealing plate (9) in the first direction; and the second vertical rib (82) is connected between two adjacent second transverse ribs (81) to separate at least two second openings.

7. The blast furnace gas fine desulfurization pretreatment device according to claim 6 is characterized in that: At least one of the second sealing plate (5), the third sealing plate (7) and the fourth sealing plate (9) is provided with a through-going air hole, and the aperture of the air hole is smaller than the particle size of the catalyst (10).

8. The blast furnace gas fine desulfurization pretreatment device according to claim 6, characterized in that: The shell (1) includes an upper head (15), a lower head (16) and an intermediate cylinder (14); the intermediate cylinder (14) is connected between the upper head (15) and the lower head (16); the first material sealing plate (3) and the third material sealing plate (7) are arranged inside the upper head (15); the second material sealing plate (5) and the fourth material sealing plate (9) are arranged inside the lower head (16); the first frame assembly (4) and the second frame assembly (8) are arranged inside the intermediate cylinder (14).

9. The blast furnace gas fine desulfurization pretreatment device according to claim 4, characterized in that: The outer wall of the housing (1) is provided with an air inlet (141) and a first manhole (151) which are in communication with the air inlet chamber (11); And / or, the outer wall of the shell (1) is provided with an air outlet (142) and a second manhole (152) which are in communication with the air outlet chamber (13).

10. The blast furnace gas fine desulfurization pretreatment device according to claim 1, characterized in that: The outer wall of the shell (1) is also provided with a purge port (143) communicating with the air inlet chamber (11).

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