Double-flow radial adsorption tower for blast furnace gas desulfurization

Abstract

The utility model relates to the field of blast furnace gas desulfurization, in particular to a double-flow radial adsorption tower for blast furnace gas desulfurization, which comprises a first pipeline, a second pipeline, an inner cylinder and an outer cylinder, the first pipeline, the second pipeline and the outer cylinder are used for conveying blast furnace gas, and an adsorbent is arranged in the inner cylinder and used for desulfurizing the blast furnace gas; through the cooperation of the components, the blast furnace gas passes through the inner cylinder in multiple flow directions, the retention time of the blast furnace gas in the inner cylinder is prolonged, the adsorption is more thorough, and in addition, the blast furnace gas flows in more directions in the inner cylinder, so that the risk of blockage of the adsorption tower body is reduced.

Description

Technical Field

[0001] The utility model relates to the field of blast furnace gas desulfurization, in particular to a double-flow radial adsorption tower for blast furnace gas desulfurization. Background Art

[0002] In the field of blast furnace gas desulfurization, blast furnace gas is one of the by-products produced during the blast furnace ironmaking process. It is a low calorific value industrial fuel. Its main users are downstream blast furnace hot blast stoves, coke ovens, power station boilers, and steel rolling heating furnaces that burn high-coke mixed gas. Because it contains sulfides such as carbonyl sulfide (COS), carbon disulfide (CS2), and hydrogen sulfide (H2S), if it is not treated, it will cause the downstream gas users to exceed the SO2 emission standard. Fine desulfurization of blast furnace gas will effectively reduce the content of sulfides in blast furnace gas, so that downstream users can meet environmental protection requirements without installing additional flue gas purification equipment.

[0003] At present, the conventional blast furnace gas fine desulfurization process is usually hydrolysis + dry desulfurization, but whether it is hydrolysis or dry desulfurization, an adsorption tower is required. The conventional adsorption tower is an axially arranged single-cylinder structure with a multi-layer V-shaped partition built in. A desulfurizer or hydrolyzing agent is placed on the partition. Then the blast furnace gas that needs to be finely desulfurized enters from the bottom and exits from the top, passes through the adsorption tower layer by layer, and reacts with the desulfurizer or hydrolyzing agent on the partition, while the desulfurizer and hydrolyzing agent are filled or unloaded by entering from the top and exiting from the bottom. However, the conventional adsorption tower setting often has problems such as uneven airflow distribution during the desulfurization process, the desulfurizer is easy to accumulate on the partition to cause blockage, and the resistance of the bed gradually increases, thereby affecting the desulfurization effect. In addition, since the blast furnace gas enters the adsorption tower and is directly discharged after passing through the bed from bottom to top, the blast furnace gas stays in the adsorption tower for a short time. After the adsorption tower runs for a period of time, the problem of insufficient desulfurization of the blast furnace gas behind often occurs.

[0004] Based on the above problems, the present application proposes a dual-flow radial adsorption tower for blast furnace gas desulfurization. A first pipeline, a second pipeline and an outer cylinder are added to the traditional adsorption tower, and each pipeline and the outer cylinder are connected to the adsorption tower in the horizontal direction, so that the blast furnace gas can make multiple turns in the process of passing through the adsorption tower to extend the residence time of the blast furnace gas in the adsorption tower, thereby making the blast furnace gas react more fully. In addition, by making the blast furnace gas flow horizontally in the adsorption tower, the cross-sectional area of ​​the flow channel is increased, thereby improving the stability of desulfurization. At the same time, since the desulfurizer or hydrolyzing agent entering from the top and exiting from the bottom no longer needs to be discharged through layers of V-shaped partitions, the possibility of blockage of the desulfurizer or hydrolyzing agent in the adsorption tower is effectively reduced, thereby making the desulfurization work more efficient and stable. Utility Model Content

[0005] To achieve the above objectives, the utility model is implemented through the following technical solutions: The utility model provides a double-flow radial adsorption tower for blast furnace gas desulfurization, comprising: a first pipeline, a second pipeline, an inner cylinder and an outer cylinder;

[0006] The inner cylinder has an upper layer and a lower layer which are independent of each other, and the upper layer and the lower layer of the inner cylinder are filled with an adsorbent;

[0007] The first pipeline passes through the bottom of the inner tube, one end of the first pipeline extending out of the inner tube serves as an air inlet, the first pipeline extends into the lower layer of the inner tube, and the end is sealed, a first opening is provided on the side wall of the first pipeline extending into the lower layer of the inner tube, and the first opening enables the lower layer of the inner tube to communicate with the inner cavity of the first pipeline;

[0008] The first pipeline is used to transport blast furnace gas to the lower layer of the inner tube through the first opening;

[0009] The inner cylinder is arranged in the outer cylinder, and a closed chamber is formed between the inner cylinder and the outer cylinder. The inner cylinder is provided with a plurality of second openings, a part of the second openings enables the closed chamber to communicate with the upper layer of the inner cylinder, and another part of the second openings enables the closed chamber to communicate with the lower layer of the inner cylinder;

[0010] The second pipeline passes through the top of the inner tube, one end of the second pipeline extends out of the inner tube as an exhaust port, the other end of the second pipeline extends into the upper layer of the inner tube, and the end is sealed, and a third opening is provided on the side tube wall of the second pipeline extending into the upper layer of the inner tube, and the third opening connects the upper layer of the inner tube with the inner cavity of the second pipeline.

[0011] Preferably, the number of the second openings for communicating the closed chamber with the lower layer of the inner cylinder is not less than the number of the second openings for communicating the closed chamber with the upper layer of the inner cylinder.

[0012] Preferably, the first openings are symmetrically distributed around the central axis of the first pipeline, and / or the second openings are symmetrically distributed around the central axis of the outer cylinder, and / or the third openings are symmetrically distributed around the central axis of the second pipeline.

[0013] Preferably, the volume of the lower layer of the inner cylinder is not less than the volume of the upper layer of the inner cylinder.

[0014] Preferably, each of the second openings connecting the closed chamber with the lower layer of the inner tube is respectively arranged in a one-to-one correspondence with each of the first openings on the opposite side of the first pipeline in the radial direction; and / or, each of the second openings connecting the closed chamber with the upper layer of the inner tube is respectively arranged in a one-to-one correspondence with each of the third openings on the opposite side of the second pipeline in the radial direction.

[0015] Preferably, the dual-flow radial adsorption tower for blast furnace gas desulfurization also includes a sealing layer, which is arranged between the adsorbent filled in the upper layer of the inner tube and the adsorbent filled in the lower layer of the inner tube, and the sealing layer is axially sealed and isolated between the upper layer and the lower layer of the inner tube.

[0016] Preferably, the inner cylinder is provided with a feed inlet and a discharge outlet.

[0017] Preferably, the sealing layer is a filling layer or a spacer;

[0018] When the sealing layer is a filling layer, the feed port is arranged at the top of the inner tube and communicates with the upper layer of the inner tube, and the discharge port is arranged at the bottom of the inner tube and communicates with the lower layer of the inner tube;

[0019] When the sealing layer is an isolation member, the feed port includes a first feed port and a second feed port, and the discharge port includes a first discharge port and a second discharge port, the first feed port and the first discharge port are connected to the upper layer of the inner cylinder, and the second feed port and the second discharge port are connected to the lower layer of the inner cylinder; so that the upper layer of the inner cylinder and the lower layer of the inner cylinder can be fed and discharged independently.

[0020] Preferably, the central axes of the first pipeline, the second pipeline, the outer cylinder and the inner cylinder are coaxially arranged.

[0021] Preferably, a cleaning port is provided on the outer peripheral surface of the bottom of the outer cylinder.

[0022] In the utility model, a dual-flow radial adsorption tower for blast furnace gas desulfurization is provided, comprising a first pipeline, a second pipeline, an outer cylinder and an inner cylinder, wherein the first pipeline, the second pipeline and the outer cylinder are used to transport blast furnace gas, and the inner cylinder is filled with an adsorbent, and the adsorbent is used to desulfurize the blast furnace gas; through the cooperation of the above-mentioned components, the blast furnace gas passes through the first pipeline, the lower layer of the inner cylinder, the outer cylinder, the upper layer of the inner cylinder and the second pipeline in sequence during the process of passing through the adsorption tower body, so that the blast furnace gas realizes dual radial circulation in the dual-flow radial adsorption tower for blast furnace gas desulfurization, effectively increasing the residence time of the blast furnace gas in the adsorption tower body, thereby making the adsorption more thorough. In addition, since each of the pipelines, the inner cylinder and the outer cylinder is connected by a plurality of openings, the blast furnace gas flows in more directions during the transportation process, thereby reducing the risk of blockage of the adsorption tower body, and will not affect the normal operation of the entire equipment due to blockage of a single opening, making the operation process of the entire equipment more stable and more efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0024] Figure 1 The utility model discloses a structural schematic diagram of a double-flow radial adsorption tower for blast furnace gas desulfurization.

[0025] The accompanying drawings are denoted as follows:

[0026] 1-inner tube; 2-outer tube; 3-first pipeline; 4-second pipeline; 5-first opening; 6-second opening; 7-third opening; 8-sealing layer; 9-feed port; 10-discharge port; 11-cleaning port. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] As used in the present invention, the singular forms "a", "an" and "the" include plural objects, the term "or" is generally used in a sense including "and / or", the term "several" is generally used in a sense including "at least one", and the term "at least two" is generally used in a sense including "two or more". In addition, the terms "first", "second" and "third" are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second", and "third" may explicitly or implicitly include one or at least two of the features. The term "proximal end" is usually the end close to the operator, and the term "distal end" is usually the end close to the patient. "One end" and "the other end" as well as "proximal end" and "distal end" usually refer to two corresponding parts, which include not only the endpoints. The terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral body; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal connection of the two elements or the interaction relationship between the two elements. In addition, as used in the present utility model, an element is arranged on another element, which usually only means that there is a connection, coupling, matching or transmission relationship between the two elements, and the connection, coupling, matching or transmission between the two elements can be direct or indirect through an intermediate element, and it cannot be understood as indicating or implying the spatial position relationship between the two elements, that is, one element can be in any position such as inside, outside, above, below or on one side of another element, unless the content clearly indicates otherwise. For those skilled in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0029] Please refer to Figure 1As shown, a dual-flow radial adsorption tower for blast furnace gas desulfurization proposed in the present application comprises an inner tube 1, an outer tube 2, a first pipeline 3 and a second pipeline 4; the inner tube 1 has an upper layer and a lower layer independent of each other, and the upper layer and the lower layer of the inner tube are both filled with adsorbent; the first pipeline 3 passes through the bottom of the inner tube 1, and one end of the first pipeline 3 extending out of the inner tube 1 serves as an air inlet, and the air inlet is used to allow the blast furnace gas to enter the first pipeline 3, the first pipeline 3 extends into the lower layer of the inner tube 1, and the end is sealed to prevent the blast furnace gas from leaving the first pipeline 3 through the end, and a first opening 5 is provided on the side wall of the first pipeline 3 extending into the lower layer of the inner tube 1, and the first opening 5 is used to connect the lower layer of the inner tube 1 with the inner cavity of the first pipeline 5; the first pipeline 3 is used to transport the blast furnace gas through the first opening 5 to The lower layer of the inner tube 1; the inner tube 1 is arranged in the outer tube 2, and a closed chamber is formed between the inner tube 1 and the outer tube 2, and a plurality of second openings 6 are arranged on the inner tube 1, a part of the second openings 6 connect the closed chamber with the upper layer of the inner tube 1, and another part of the second openings 6 connect the closed chamber with the lower layer of the inner tube 1; the second pipeline 6 passes through the top of the inner tube 1, and one end of the second pipeline 4 extends out of the inner tube 1 as an exhaust port, and the exhaust port is used to discharge the blast furnace gas from the upper layer of the inner tube to the double-flow radial adsorption tower for blast furnace gas desulfurization, the other end of the second pipeline 4 extends into the upper layer of the inner tube 1, and the end is sealed, and a third opening 7 is arranged on the side tube wall of the second pipeline 4 extending into the upper layer of the inner tube, and the third opening 7 connects the upper layer of the inner tube 1 with the inner cavity of the second pipeline 4.

[0030] It is worth noting that the above-mentioned adsorbents include calcium-based desulfurizers and sodium-based desulfurizers, etc., and the adsorbents are used to remove sulfides in the blast furnace gas; in addition, each of the first pipeline 3 and the second pipeline 4 adopts a cast iron cylindrical gas pipe. In other alternative embodiments, it can also be a copper spiral pipeline or a stainless steel elbow; the inner cylinder 1 and the outer cylinder 2 are usually made of iron or cast iron. In this embodiment, the inner cylinder 1 and the outer cylinder 2 are both cylinders. In other alternative embodiments, the inner cylinder 1 and the outer cylinder 2 can also be other known shapes such as a cube. In addition, when the inner cylinder 1 is a cylinder, the outer cylinder 2 can be a cube whose square diagonal length of the cross-section is greater than the circular diameter of the cross-section of the inner cylinder 1. The above is the prior art, and this application does not make too many restrictions and elaborations here.

[0031] In this embodiment, the volume of the lower layer of the inner tube 1 is greater than the volume of the upper layer of the inner tube 1, so that the blast furnace gas reacts with the adsorbent to the greatest extent in the lower layer of the inner tube 1. According to the above, since the volume of the lower layer of the inner tube 1 is greater than the volume of the upper layer of the inner tube 1, the height dimension of the lower layer of the inner tube 1 is usually greater than the height dimension of the upper layer of the inner tube 1. In order to allow the blast furnace gas to pass through the adsorbent in the lower layer of the inner tube 1 more smoothly and enter the second pipeline 4, the number of the second openings 6 for connecting the closed chamber with the lower layer of the inner tube 1 is usually not less than the number of the second openings 6 for connecting the closed chamber with the upper layer of the inner tube 1.

[0032] Please refer to Figure 1 As shown, in the present embodiment, the first opening 5, the second opening 6 and the third opening 7 are pipelines protruding from the pipelines, the inner cylinder 1 and the outer cylinder 2, and their cross-sectional shape is usually circular. In other alternative embodiments, each of the openings may also be an ellipse or other known shapes. In addition, each of the openings may be provided with a filter or a filter. At the same time, each of the openings may also be inclined, and the relative height of the opening on one side of the inner cylinder 1 is lower than that on the other side to prevent the adsorbent in the inner cylinder 1 from entering into each of the pipelines or the outer cylinder 2 through the opening. Operators in this field may adopt the above or other known technical means for setting according to different on-site construction conditions. The above are all prior arts, and this application does not make too many restrictions here.

[0033] In this embodiment, the first openings 5 ​​are symmetrically distributed around the central axis of the first pipeline 3, and / or the second openings 6 are symmetrically distributed around the central axis of the inner cylinder 1, and / or the third openings 7 are symmetrically distributed around the central axis of the second pipeline 4; in addition, the number of the second openings 6 of the outer cylinder 2 located in the lower layer of the inner cylinder 1 is consistent with the number of the first openings 5 ​​on the opposite side of the first pipeline 3, and the second openings 6 located in the lower layer of the inner cylinder 1 are respectively arranged in a one-to-one correspondence with the first openings 5 ​​on the opposite side of the first pipeline 3 in the radial direction; and / or the number of the second openings 6 of the outer cylinder 2 located in the upper layer of the inner cylinder 1 is consistent with the number of the third openings 7 on the opposite side of the second pipeline 4, and the second openings 6 located in the upper layer of the inner cylinder 1 are respectively arranged in a one-to-one correspondence with the third openings 7 on the opposite side of the second pipeline 4 in the radial direction. Through the above arrangement, when the blast furnace gas passes through the first pipeline 3, the lower layer of the inner tube 1, the outer tube 2, the upper layer of the inner tube 1 and the second pipeline 4 in sequence, the flow direction of the blast furnace gas is more uniform and the contact with the adsorbent is more thorough, thereby improving the desulfurization efficiency of the blast furnace gas.

[0034] Please refer to Figure 1 As shown, the dual-flow radial adsorption tower for blast furnace gas desulfurization also includes a sealing layer 8, which is arranged between the adsorbent filled in the upper layer of the inner cylinder 1 and the adsorbent filled in the lower layer of the inner cylinder 1, and the sealing layer 8 is axially sealed and isolated between the upper layer and the lower layer of the inner cylinder 1, and the sealing layer 8 is used to isolate the upper layer and the lower layer of the inner cylinder 1 to prevent the blast furnace gas in the lower layer of the inner cylinder 1 from flowing upward to the upper layer of the inner cylinder 1; in this embodiment, the sealing layer 8 is a filling layer, and the filling layer is used to fill with adsorbents with smaller volumes, so that the gaps between the adsorbents are smaller, and it is difficult for the blast furnace gas to flow from the filling layer to the upper layer of the inner cylinder 1. Even if a small amount of blast furnace gas enters the upper layer of the inner cylinder 1 through the filling layer, the blast furnace gas can also be filled due to the adsorbent with higher density in the filling layer. desulfurization of the part; in addition, the sealing layer can also be a cast iron sealing plate with a feed port that can be opened and closed; at this time, the inner tube 1 is provided with a feed port 9 and a discharge port 10, the feed port 9 is arranged at the top of the inner tube 1 and is connected with the upper layer of the inner tube 1, the discharge port 10 is arranged at the bottom of the inner tube 1 and is connected with the lower layer, when the dual-flow radial adsorption tower for blast furnace gas desulfurization starts to work, the feed port of the cast iron sealing plate is closed, so that the blast furnace gas cannot flow upward from the port to the upper layer of the inner tube 1, when the dual-flow radial adsorption tower for blast furnace gas desulfurization is shut down or the adsorbent needs to be replaced, the feed port of the cast iron sealing plate is opened, so that the adsorbent in the upper layer of the inner tube 1 falls to the lower layer, and is discharged from the dual-flow radial adsorption tower for blast furnace gas desulfurization through the discharge port 10 together with the adsorbent in the lower layer.

[0035] In other alternative embodiments, the sealing layer 8 may also be a dense phase adsorption layer, specifically a Z-shaped or ladder-shaped grid plate, the grid plate is filled with a high-density adsorbent, so that the blast furnace gas is difficult to pass through the sealing layer 8 from the lower layer of the inner tube 1 directly into the upper layer of the inner tube 1; even if a very small amount of the blast furnace gas passes through the dense phase adsorption layer, the blast furnace gas can be fully desulfurized due to the high density of the adsorbent in the dense phase adsorption layer at this time; it is worth noting that when the sealed layer 8 is set as a dense phase adsorption layer, a first feed port is provided at the top of the upper layer of the inner tube 1, and a first discharge port is provided at the bottom of the upper layer; a second feed port is provided at the top of the lower layer of the inner tube 1, and a second discharge port is provided at the bottom of the lower layer of the inner tube 1; so that the upper layer of the inner tube 1 and the lower layer of the inner tube 1 can be fed and discharged independently.

[0036] Please refer to Figure 1As shown, in this embodiment, the central axes of the inner cylinder 1, the outer cylinder 2, the first pipeline 3 and the second pipeline 4 are coaxially arranged, and the above-mentioned components are all cylindrical, and their cross-sectional circular surfaces are all perfect circles, and the central axis is located at the center of any cross-sectional circle of the above-mentioned components.

[0037] Please refer to Figure 1 As shown, a cleaning port 11 is provided on the outer peripheral surface of the bottom of the outer tube 2, and the cleaning port 11 is used to allow the operator to enter the dual-flow radial adsorption tower for blast furnace gas desulfurization to clean the dual-flow radial adsorption tower for blast furnace gas desulfurization, so as to avoid the clogging of the adsorbent inside the dual-flow radial adsorption tower for blast furnace gas desulfurization after long-term use.

[0038] In summary, in the present application, a dual-flow radial adsorption tower for blast furnace gas desulfurization is proposed. Through the cooperation of the inner tube 1, the outer tube 2, the first pipeline 3, the second pipeline 4 and the openings, the blast furnace gas passes through the first pipeline 3, the lower layer of the inner tube 1, the outer tube 2, the upper layer of the inner tube 1 and the second pipeline 4 in sequence during the process of passing through the dual-flow radial adsorption tower for blast furnace gas desulfurization, so that the blast furnace gas realizes dual radial circulation in the dual-flow radial adsorption tower for blast furnace gas desulfurization, effectively increasing the residence time of the blast furnace gas in the adsorption tower body, thereby making the adsorption more thorough. In addition, since the pipelines, the inner tube 1 and the outer tube 2 are connected by multiple openings, the blast furnace gas has more flow directions during transportation, thereby reducing the risk of blockage of the adsorption tower body, and will not affect the normal operation of the entire equipment due to blockage of a single opening, making the operation process of the entire equipment more stable and the working efficiency higher.

[0039] Finally, it should be noted that the above is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. A dual-flow radial adsorption tower for blast furnace gas desulfurization, characterized in that: include: A first pipeline, a second pipeline, an inner cylinder and an outer cylinder; The inner cylinder has an upper layer and a lower layer which are independent of each other, and the upper layer and the lower layer of the inner cylinder are filled with an adsorbent; The first pipeline passes through the bottom of the inner tube, one end of the first pipeline extends out of the inner tube as an air inlet, and the other end of the first pipeline extends into the lower layer of the inner tube, and the end is sealed, and a first opening is provided on the side wall of the first pipeline extending into the lower layer of the inner tube, and the first opening enables the lower layer of the inner tube to communicate with the inner cavity of the first pipeline; The first pipeline is used to transport blast furnace gas to the lower layer of the inner tube through the first opening; The inner cylinder is arranged in the outer cylinder, and a closed chamber is formed between the inner cylinder and the outer cylinder. The inner cylinder is provided with a plurality of second openings, a part of the second openings enables the closed chamber to communicate with the upper layer of the inner cylinder, and another part of the second openings enables the closed chamber to communicate with the lower layer of the inner cylinder; The second pipeline passes through the top of the inner tube, one end of the second pipeline extends out of the inner tube as an exhaust port, the other end of the second pipeline extends into the upper layer of the inner tube, and the end is sealed, and a third opening is provided on the side tube wall of the second pipeline extending into the upper layer of the inner tube, and the third opening connects the upper layer of the inner tube with the inner cavity of the second pipeline.

2. A dual-flow radial adsorption tower for blast furnace gas desulfurization according to claim 1, characterized in that: The number of the second openings for communicating the closed chamber with the lower layer of the inner tube is not less than the number of the second openings for communicating the closed chamber with the upper layer of the inner tube.

3. A dual-flow radial adsorption tower for blast furnace gas desulfurization according to claim 1, characterized in that: The first openings are symmetrically distributed around the central axis of the first pipeline, and / or the second openings are symmetrically distributed around the central axis of the outer cylinder, and / or the third openings are symmetrically distributed around the central axis of the second pipeline.

4. A dual-flow radial adsorption tower for blast furnace gas desulfurization according to claim 1, characterized in that: The volume of the lower layer of the inner cylinder is not less than the volume of the upper layer of the inner cylinder.

5. A dual-flow radial adsorption tower for blast furnace gas desulfurization according to any one of claims 1 to 4, characterized in that: The second openings connecting the closed chamber with the lower layer of the inner tube are respectively arranged in a one-to-one correspondence with the first openings on the opposite side of the first pipeline in the radial direction; and / or the second openings connecting the closed chamber with the upper layer of the inner tube are respectively arranged in a one-to-one correspondence with the third openings on the opposite side of the second pipeline in the radial direction.

6. A dual-flow radial adsorption tower for blast furnace gas desulfurization according to claim 1, characterized in that: The dual-flow radial adsorption tower for blast furnace gas desulfurization also includes a sealing layer, which is arranged between the adsorbent filled in the upper layer of the inner tube and the adsorbent filled in the lower layer of the inner tube, and the sealing layer is axially sealed and isolated between the upper layer and the lower layer of the inner tube.

7. A dual-flow radial adsorption tower for blast furnace gas desulfurization according to claim 6, characterized in that: The inner cylinder is provided with a feed inlet and a discharge outlet.

8. A dual-flow radial adsorption tower for blast furnace gas desulfurization according to claim 7, characterized in that: The sealing layer is a filling layer or a spacer; When the sealing layer is a filling layer, the feed port is arranged at the top of the inner tube and communicates with the upper layer of the inner tube, and the discharge port is arranged at the bottom of the inner tube and communicates with the lower layer of the inner tube; When the sealing layer is an isolation member, the feed port includes a first feed port and a second feed port, and the discharge port includes a first discharge port and a second discharge port, the first feed port and the first discharge port are connected to the upper layer of the inner cylinder, and the second feed port and the second discharge port are connected to the lower layer of the inner cylinder; so that the upper layer of the inner cylinder and the lower layer of the inner cylinder can be fed and discharged independently.

9. A dual-flow radial adsorption tower for blast furnace gas desulfurization according to claim 3, characterized in that: The central axes of the first pipeline, the second pipeline, the outer cylinder and the inner cylinder are coaxially arranged.

10. The dual-flow radial adsorption tower for blast furnace gas desulfurization according to claim 1, characterized in that: The outer peripheral surface of the bottom of the outer cylinder is provided with a cleaning port.

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