Integrated desulfurization device for blast furnace gas

Abstract

The utility model discloses an integrated desulfurization device for blast furnace gas. The integrated desulfurization device comprises a cylindrical structure, an annular hydrolysis layer, a heating structure, an annular desulfurization layer and a cooling structure, on one hand, the annular hydrolysis layer and the annular desulfurization layer are arranged, so that the coal gas flows along the radial direction in the hydrolysis catalysis and adsorption desulfurization processes, the circulation area of the coal gas in the annular hydrolysis layer and the annular desulfurization layer is increased, the purpose of increasing the reaction sectional area is achieved, and finally the reaction efficiency is improved. And secondly, a plurality of links such as cold and heat exchange, hydrolysis and adsorption in the desulfurization process are arranged in the cylindrical structure, so that the occupied area and scale of equipment are greatly reduced, and the concentration ratio of the device is improved. Thirdly, a heating structure is mounted on the inner side of the annular hydrolysis layer, so that heat is prevented from being dissipated into ambient air; in addition, a heat insulation layer is arranged to prevent the cooling structure from consuming heat of the upper space and prevent the heat of the upper space from being input into the lower space through radiation; therefore, the purpose of reducing energy consumption is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of blast furnace gas, in particular to an integrated desulfurization device for blast furnace gas. Background Art

[0002] The existing coal gas desulfurization process mainly uses a hydrolysis catalytic process to convert organic sulfides such as COS, CS2 and other organic sulfur contained in blast furnace gas into H2S, and then uses the activated carbon adsorption principle to adsorb it to obtain purified blast furnace gas.

[0003] In order to realize the above process, the existing coal gas desulfurization device is generally divided into multiple structures according to its function, which are not distributed in various areas and are connected to each other through complex pipelines; there are disadvantages of large footprint and complex pipeline directions. Secondly, in the existing desulfurization system, the coal gas is passed into the heating device, and then heated to the preset temperature and discharged. The external heat of the heating device is seriously dissipated, which consumes a lot of energy.

[0004] In addition, the existing coal gas flow direction in the desulfurization system is vertical axial or horizontal axial, and the coal gas is too concentrated in a certain reaction area in the hydrolysis and adsorption units, resulting in a small reaction cross-sectional area and low desulfurization reaction efficiency. Utility Model Content

[0005] In view of the above-mentioned defects in the prior art, a blast furnace gas integrated desulfurization device is provided to improve equipment concentration, increase desulfurization efficiency and reduce energy consumption.

[0006] The technical solution adopted by the utility model to solve the above technical problems is:

[0007] Blast furnace gas integrated desulfurization device, including

[0008] A cylindrical structure, in which a heat insulation layer is arranged, the heat insulation layer divides the cylindrical structure into an upper space and a lower space; a connecting hole is arranged on the heat insulation layer, the connecting hole connects the hydrolysis unit and the adsorption desulfurization unit;

[0009] An annular hydrolysis layer is fixed in the upper space, and the upper space is divided into a heat exchange cavity located inside the annular hydrolysis layer and a transition cavity located outside the annular hydrolysis layer. The heat exchange cavity and the transition cavity are not directly connected, and part of the transition cavity is located between the annular hydrolysis layer and the heat insulation layer. The hydrolyzing agent is filled in the annular hydrolysis layer, and the annular hydrolysis layer is connected to the adjacent cavity only through the inner wall surface and the outer wall surface. A gas inlet is provided on the heat exchange cavity.

[0010] A heating structure, wherein the heating structure is arranged in the heating cavity;

[0011] The annular desulfurization layer is arranged in the lower space, and the lower space is divided into a gas collecting cavity located inside the annular desulfurization layer and a buffer cavity located outside the annular desulfurization layer. The gas collecting cavity and the buffer cavity are not directly connected, and part of the buffer cavity is located between the annular desulfurization layer and the heat insulation layer; the desulfurizer is filled in the annular desulfurization layer, and the annular desulfurization layer is connected to the adjacent cavity only through the inner wall surface and the outer wall surface; a gas outlet is provided on the gas collecting cavity;

[0012] The cooling structure is arranged in the buffer cavity and between the heat insulation layer and the annular desulfurization layer.

[0013] According to the above technical solution, an annular baffle is provided in the heating cavity, which divides the heating cavity into an inner layer and an outer layer. The heating device and the gas inlet are both located in the inner layer; a plurality of through holes are evenly spaced on the annular baffle.

[0014] According to the above technical scheme, the heating structure includes a heating coil arranged in the heating cavity, the top end of the heating coil passes through the top of the cylindrical structure and is connected to the external steam supply source, the bottom end of the heating coil passes through the bottom of the heating cavity, passes through the transition cavity, passes through the side wall of the upper space, and serves as a steam outlet; a head is provided at the bottom end of the heating coil.

[0015] According to the above technical scheme, the annular hydrolysis layer includes an inner annular grid plate, an outer annular grid plate, an arc-shaped bottom sealing plate, a plurality of first support members, and a hydrolyzing agent filling port and a hydrolyzing agent unloading port. The top ends of the inner and outer annular grid plates are fixed on the lower surface of the top plate of the cylindrical structure, and the arc-shaped bottom sealing plate is fixedly connected to the bottom ends of the inner and outer annular grid plates; the two ends of the plurality of first support members are fixedly connected between the outer annular grid plate and the inner wall surface of the cylindrical structure; a plurality of hydrolyzing agent filling ports are arranged through the top plate of the cylindrical structure and are located between the inner and outer annular grid plates; a plurality of hydrolyzing agent unloading ports are arranged on the arc-shaped bottom sealing plate and are located between the inner and outer annular grid plates, and the hydrolyzing agent unloading ports pass through the side wall of the upper space; the coal gas inlet is arranged through the top plate of the cylindrical structure and is located in the inner annular grid plate.

[0016] According to the above technical scheme, the annular desulfurization layer includes an inner annular grid plate, an outer annular grid plate, an upper arc-shaped sealing plate and a lower arc-shaped sealing plate, a plurality of second support members, and a desulfurizer loading port and a desulfurizer unloading port. The top ends of the inner and outer annular grid plates are fixedly connected to the upper arc-shaped sealing plate, and the bottom ends of the inner and outer annular grid plates are fixedly connected to the lower arc-shaped sealing plate; the two ends of the plurality of second support members are fixedly connected between the outer annular grid plate and the inner wall surface of the cylindrical structure; a plurality of desulfurizer filling ports are arranged through the upper arc-shaped sealing plate and are located between the inner and outer annular grid plates; a plurality of hydrolyzer unloading ports are arranged on the lower arc-shaped sealing plate and are located between the inner and outer annular grid plates, and the hydrolyzer unloading port passes through the side wall of the lower space; the gas outlet is arranged through the side wall of the cylindrical structure and is connected to the area where the lower arc-shaped sealing plate is located between the inner annular grid plates.

[0017] According to the above technical solution, the heat insulating layer includes a frame, connecting holes fixed on the frame, and heat insulating foam material filled in the frame.

[0018] According to the above technical solution, the connecting through hole adopts a zoom-in nozzle-like structure.

[0019] According to the above technical scheme, in order to facilitate the maintenance of the device, multiple inspection manholes are provided in the upper space and the lower space; the cooling structure includes a chilled water heat exchange coil arranged under the insulation layer, and both ends of the chilled water heat exchange coil respectively penetrate the side walls of the lower space and are respectively connected to the external water supply component and the water storage component.

[0020] According to the above technical solution, the annular hydrolysis layer and the heating structure are exchanged to the lower space, and the annular desulfurization layer and the cooling structure are exchanged to the upper space.

[0021] The utility model has the following beneficial effects:

[0022] In this embodiment, the coal gas enters from the coal gas inlet in the heat exchange cavity, and is heated to the temperature required for the hydrolysis catalytic process in the heat exchange cavity; with the heat exchange cavity as the center, it passes through the annular hydrolysis layer along the radial direction of the cylindrical structure and enters the transition cavity. After hydrolysis catalysis, organic sulfides such as COS, CS2 and other organic sulfur in the coal gas are converted into H2S; the coal gas after hydrolysis catalysis enters the lower cavity through the connecting holes of the insulation layer, and is then cooled to the appropriate temperature required for the desulfurization process by the cooling structure. Under the action of gas pressure, the cooled coal gas enters the annular desulfurization layer radially from the sides of the annular desulfurization layer, and finally gathers in the gas collecting cavity and is discharged from the coal gas outlet.

[0023] Based on the above structure, firstly, by setting an annular hydrolysis layer and annular desulfurization layer, the gas flows along the radial process during the hydrolysis catalysis and adsorption desulfurization process, increasing the flow area of ​​the gas in the annular hydrolysis layer and the annular desulfurization layer, so as to achieve the purpose of increasing the reaction cross-sectional area. Since the reaction temperature has a great influence on the adsorption and hydrolysis process, the temperature gradient and reaction cross-sectional area gradient of the radial packing layer form an effective complement. Simply put: the reaction cross-sectional area outside the hydrolysis layer is larger, which can effectively make up for the disadvantage of low temperature outside; similarly, the temperature inside is relatively high, which can make up for the disadvantage of small cross-sectional area inside. The same is true for the desulfurization layer. Ultimately, the reaction efficiency is improved. Secondly, the heat exchange, hydrolysis, adsorption and other links of the desulfurization process are all set in the cylindrical structure, which greatly reduces the size and scale of the equipment and improves the concentration of the device. Thirdly, the heating structure is installed on the inner side of the annular hydrolysis layer to prevent heat from dissipating into the surrounding air; in addition, a heat insulation layer is set to prevent the cooling structure from consuming the heat of the upper space and the heat of the upper space from being input into the lower space through radiation; thereby achieving the purpose of reducing energy consumption.

[0024] The above description is only an overview of the technical solution of the utility model. In order to more clearly understand the technical means of the utility model and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiment of the utility model with the accompanying drawings. The specific implementation method of the utility model is given in detail by the following embodiments and their drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present application. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention.

[0026] Figure 1 It is a structural schematic diagram of an embodiment provided by the utility model;

[0027] Figure 2 yes Figure 1 Sectional view of AA in the middle;

[0028] Figure 3 yes Figure 1 Cross-sectional view of the middle BB;

[0029] Figure 4 yes Figure 1 Cross-sectional view of CC;

[0030] Figure 5 yes Figure 1 Cross-sectional view of the middle DD;

[0031] Figure 6 yes Figure 1 Sectional view of EE in the figure;

[0032] Figure 7 yes Figure 1 Cross-sectional view of the middle FF;

[0033] Figure 8 yes Figure 1 Cross-sectional view of middle GG;

[0034] Fig. 9 yes Figure 1 Cross-sectional view of middle HH;

[0035] In the figure, 1, cylindrical structure; 2, heat insulation layer; 2-1, skeleton; 2-2, connecting hole; 2-3, heat insulation foam material; 3, annular hydrolysis layer; 3-1, inner annular grid plate; 3-2, outer annular grid plate; 3-3, arc-shaped bottom sealing plate; 3-4, first support member; 3-5, hydrolysis agent filling port; 3-6, hydrolysis agent unloading port; 4, coal gas inlet; 5, heating structure; 6, annular desulfurization layer; 6-1, inner annular grid plate; 6-2, outer annular grid plate; 6-3, upper arc-shaped sealing plate; 6-4, lower arc-shaped sealing plate; 6-5, second support member; 6-6, desulfurization agent filling port; 6-7, desulfurization agent unloading port; 7, coal gas outlet; 8, cooling structure; 9, annular baffle; 10, inspection manhole. DETAILED DESCRIPTION

[0036] The following is combined with Figure 1-9 The principles and features of the present invention are described, and the examples are only used to explain the present invention, and are not used to limit the scope of the present invention. In the following paragraphs, the present invention is described in more detail by way of example with reference to the accompanying drawings. According to the following description and claims, the advantages and features of the present invention will become clearer. It should be noted that the drawings are all in a very simplified form and are not in precise proportions, and are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the present invention.

[0037] It should be noted that when a component is referred to as being "fixed to" another component, it may be directly on the other component or there may also be a component centered. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may also be a component centered. When a component is considered to be "set on" another component, it may be directly set on the other component or there may also be a component centered. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0038] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0039] Reference Figures 1 to 9 As shown, the utility model provides an integrated blast furnace gas desulfurization device.

[0040] Example 1

[0041] It comprises a cylindrical structure 1, in which a heat insulation layer 2 is arranged, the heat insulation layer divides the cylindrical structure into an upper space and a lower space; the heat insulation layer is provided with a connecting hole, the connecting hole connects the hydrolysis unit and the adsorption desulfurization unit;

[0042] An annular hydrolysis layer 3 is fixed in the upper space, dividing the upper space into a heat exchange cavity located inside the annular hydrolysis layer and a transition cavity located outside the annular hydrolysis layer, the heat exchange cavity and the transition cavity are not directly connected, and a part of the transition cavity is located between the annular hydrolysis layer and the heat insulation layer; the hydrolyzing agent is filled in the annular hydrolysis layer, and the annular hydrolysis layer is connected to the adjacent cavity only through the inner wall surface and the outer wall surface; a gas inlet 4 is provided on the heat exchange cavity;

[0043] A heating structure 5, which is arranged in the heating cavity;

[0044] annular desulfurization layer 6, the annular desulfurization layer is arranged in the lower space, the lower space is divided into a gas collecting cavity located inside the annular desulfurization layer and a buffer cavity located outside the annular desulfurization layer, the gas collecting cavity and the buffer cavity are not directly connected, and part of the buffer cavity is located between the annular desulfurization layer and the heat insulation layer; the desulfurizer is filled in the annular desulfurization layer, and the annular desulfurization layer is connected to the adjacent cavity only through the inner wall surface and the outer wall surface; a gas outlet 7 is provided on the gas collecting cavity;

[0045] The cooling structure 8 is arranged in the buffer cavity and between the heat insulation layer and the annular desulfurization layer.

[0046] In this embodiment, the coal gas enters from the coal gas inlet in the heat exchange cavity, and is heated to the temperature required for the hydrolysis catalytic process in the heat exchange cavity; with the heat exchange cavity as the center, it enters the transition cavity through the annular hydrolysis layer in the radial direction of the cylindrical structure. After hydrolysis catalysis, organic sulfides such as COS, CS2 and other organic sulfur in the coal gas are converted into H2S; the coal gas after hydrolysis catalysis enters the lower cavity through the connecting holes of the insulation layer, and is then cooled to the appropriate temperature required for the desulfurization process by the cooling structure. Under the action of gas pressure, the cooled coal gas enters the annular desulfurization layer radially from the sides of the annular desulfurization layer, and finally gathers in the gas collecting cavity and is discharged from the coal gas outlet. In this process, the coal gas realizes the transformation of organic sulfur to inorganic sulfur in the upper space; and realizes the adsorption and removal of inorganic sulfur in activated carbon in the lower space. Among them, the desulfurizer uses activated carbon, and other commonly used desulfurizers can also be used; in the desulfurization process, H2S is adsorbed in the porous pores of the activated carbon to realize the coal gas desulfurization function.

[0047] Based on the above structure, firstly, by setting an annular hydrolysis layer and annular desulfurization layer, the gas flows along the radial process during the hydrolysis catalysis and adsorption desulfurization process, increasing the flow area of ​​the gas in the annular hydrolysis layer and the annular desulfurization layer, so as to achieve the purpose of increasing the reaction cross-sectional area. Since the reaction temperature has a great influence on the adsorption and hydrolysis process, the temperature gradient and reaction cross-sectional area gradient of the radial packing layer form an effective complement. Simply put: the reaction cross-sectional area outside the hydrolysis layer is larger, which can effectively make up for the disadvantage of low temperature outside; similarly, the temperature inside is relatively high, which can make up for the disadvantage of small cross-sectional area inside. The same is true for the desulfurization layer. Ultimately, the reaction efficiency is improved. Secondly, the heat exchange, hydrolysis, adsorption and other links of the desulfurization process are all set in the cylindrical structure, which greatly reduces the size and scale of the equipment and improves the concentration of the device. Thirdly, the heating structure is installed on the inner side of the annular hydrolysis layer to prevent heat from dissipating into the surrounding air; in addition, a heat insulation layer is set to prevent the cooling structure from consuming the heat of the upper space and the heat of the upper space from being input into the lower space through radiation; thereby achieving the purpose of reducing energy consumption.

[0048] Example 2

[0049] The structure and principle of Example 2 are similar to those of Example 1, except that: in order to further increase the reaction cross-sectional area of ​​the coal gas in the annular hydrolysis layer, an annular baffle 9 is provided in the heating chamber, and the annular baffle divides the heating chamber into an inner layer and an outer layer, and the heating device and the coal gas inlet are both located in the inner layer; a plurality of through holes are evenly spaced on the annular baffle.

[0050] In this embodiment, an annular baffle is provided in the heating cavity to form an annular cavity between the inner layer and the annular hydrolysis layer, and the annular baffle is used to buffer and decelerate the coal gas just entering the heating cavity, so as to prevent the coal gas from being too concentrated in a certain area and entering the annular hydrolysis layer. The buffered and decelerated coal gas is gathered in the annular baffle, and under the action of pressure, it is evenly discharged from each through hole of the annular baffle into the annular cavity, and finally enters the annular hydrolysis layer, so as to ensure that the coal gas flows evenly, so as to achieve the purpose of increasing the cross-sectional area of ​​the hydrolysis reaction.

[0051] Based on Example 1 or 2, a preferred structural form of a heating structure is given, which includes a heating coil arranged in a heating cavity, the top of the heating coil passes through the top of the cylindrical structure and is connected to an external steam supply source, the bottom end of the heating coil passes through the bottom of the heating cavity, passes through the transition cavity, and passes through the side wall of the upper space to serve as a steam outlet; a head is provided at the bottom end of the heating coil.

[0052] On the basis of Example 1 or 2, a preferred structural form of an annular hydrolysis layer is given, the annular hydrolysis layer includes an inner annular grid plate 3-1, an outer annular grid plate 3-2, an arcuate bottom sealing plate 3-3, a plurality of first support members 3-4, and a hydrolyzing agent filling port 3-5 and a hydrolyzing agent unloading port 3-6, the top ends of the inner and outer annular grid plates are fixed on the lower surface of the top plate of the cylindrical structure, and the arcuate bottom sealing plate is fixedly connected to the bottom ends of the inner and outer annular grid plates; the two ends of a plurality of first support members are fixedly connected between the outer annular grid plate and the inner wall surface of the cylindrical structure; a plurality of hydrolyzing agent filling ports are arranged through the top plate of the cylindrical structure and are located between the inner and outer annular grid plates; a plurality of hydrolyzing agent unloading ports are arranged on the arcuate bottom sealing plate and are located between the inner and outer annular grid plates, and the hydrolyzing agent unloading ports pass through the side wall of the upper space; the coal gas inlet is arranged through the top plate of the cylindrical structure and is located in the inner annular grid plate.

[0053] In this embodiment, a heat exchange cavity is formed by the inner annular grid plate, the arc-shaped bottom sealing plate, and the top plate of the cylindrical structure; a transition cavity is formed by the outer annular grid plate, the arc-shaped bottom sealing plate, and the inner wall of the cylindrical structure. In the transition cavity, an annular channel is left between the annular hydrolysis layer and the side wall of the cylindrical structure, and the coal gas flows radially out of the annular hydrolysis agent and flows downward from the annular channel.

[0054] On the basis of Example 1 or 2, a preferred structural form of an annular desulfurization layer is given, which includes an inner annular grid plate 6-1, an outer annular grid plate 6-2, an upper arc-shaped sealing plate 6-3 and a lower arc-shaped sealing plate 6-4, a plurality of second support members 6-2, and a desulfurizer loading port 6-6 and a desulfurizer unloading port 6-7. The top ends of the inner and outer annular grid plates are fixedly connected to the upper arc-shaped sealing plate, and the bottom ends of the inner and outer annular grid plates are fixedly connected to the lower arc-shaped sealing plate; the two ends of the plurality of second support members are fixedly connected between the outer annular grid plate and the inner wall surface of the cylindrical structure; a plurality of desulfurizer filling ports are arranged through the upper arc-shaped sealing plate and are located between the inner and outer annular grid plates; a plurality of hydrolyzer unloading ports are arranged on the lower arc-shaped sealing plate and are located between the inner and outer annular grid plates, and the hydrolyzer unloading port passes through the side wall of the lower space; the gas outlet is arranged through the side wall of the cylindrical structure and is connected to the area where the lower arc-shaped sealing plate is located between the inner annular grid plates.

[0055] In this embodiment, a gas collecting cavity is formed between the inner annular grid plate and the upper arc-shaped sealing plate, and a buffer cavity is formed between the outer annular grid plate, the upper arc-shaped sealing plate, the lower arc-shaped sealing plate and the inner wall of the cylinder structure.

[0056] Based on Example 1 or 2, a preferred structure of the heat insulation layer is provided, wherein the heat insulation layer comprises a frame 2-1, a connecting hole 2-2 fixed on the frame, and a heat insulation foam material 2-3 filled in the frame. By providing the heat insulation layer and cooperating with the connecting holes on the heat insulation layer, uniform flow of coal gas is achieved, and heat transfer between the upper and lower units is reduced.

[0057] Preferably, the connecting through hole adopts a zoom nozzle-like structure, which can increase the turbulence of the gas disturbance and appropriately reduce its temperature, thereby creating conditions for realizing the desulfurization function as much as possible.

[0058] On the basis of Embodiment 1 or 2, in order to facilitate the maintenance of the device, multiple inspection manholes 10 are provided in the upper space and the lower space; the cooling structure includes a chilled water heat exchange coil arranged below the heat insulation layer, and the two ends of the chilled water heat exchange coil respectively penetrate the side wall of the lower space and are respectively connected to the external water supply component and the water storage component. The chilled water is supplied from the outside to the coil inlet, flows in the pipe and is sent out of the device; the coal gas exchanges heat with it mainly in a heat convection manner to achieve coal gas cooling.

[0059] Example 3

[0060] The structure and principle of Example 3 are similar to those of Examples 1 and 2, except that the annular hydrolysis layer and the heating structure are moved to the lower space, and the annular desulfurization layer and the cooling structure are moved to the upper space. At this time, the coal gas is introduced from the lower space, heated, and flows radially outward through the annular hydrolysis layer; then it passes through the insulation board circumferentially, is cooled, flows radially inward through the annular desulfurization layer, and finally is discharged from the coal gas outlet.

[0061] The working method of the utility model adopts any of the above-mentioned blast furnace gas integrated desulfurization devices; and comprises the following steps:

[0062] S1: The gas enters the heating cavity and wraps around the outside of the heating structure to complete the heating process;

[0063] S2: The heated coal gas diffuses radially outward from the heating chamber through the annular hydrolysis layer to complete the hydrolysis catalytic process;

[0064] S3: Cooling down the hydrolyzed gas;

[0065] S4: The coal gas that has been cooled passes through the annular desulfurization layer radially from the outside of the annular desulfurization layer, completes the desulfurization process and is finally transported to the outside.

[0066] The above description is only a preferred embodiment of the utility model and does not impose any form of limitation on the utility model. Any ordinary technician in the industry can smoothly implement the utility model as shown in the drawings of the specification and described above. However, any equivalent changes, modifications and evolutions made by technicians familiar with the profession without departing from the scope of the technical solution of the utility model using the technical content disclosed above are all equivalent embodiments of the utility model. At the same time, any equivalent changes, modifications and evolutions made to the above embodiments based on the essential technology of the utility model are still within the protection scope of the technical solution of the utility model.

Claims

1. Integrated blast furnace gas desulfurization device, characterized by: include A cylindrical structure, in which a heat insulation layer is arranged, the heat insulation layer divides the cylindrical structure into an upper space and a lower space; a connecting hole is arranged on the heat insulation layer, the connecting hole connects the hydrolysis unit and the adsorption desulfurization unit; An annular hydrolysis layer is fixed in the upper space, and the upper space is divided into a heat exchange cavity located inside the annular hydrolysis layer and a transition cavity located outside the annular hydrolysis layer. The heat exchange cavity and the transition cavity are not directly connected, and part of the transition cavity is located between the annular hydrolysis layer and the heat insulation layer. The hydrolyzing agent is filled in the annular hydrolysis layer, and the annular hydrolysis layer is connected to the adjacent cavity only through the inner wall surface and the outer wall surface. A gas inlet is provided on the heat exchange cavity. A heating structure, wherein the heating structure is arranged in the heating cavity; The annular desulfurization layer is arranged in the lower space, and the lower space is divided into a gas collecting cavity located inside the annular desulfurization layer and a buffer cavity located outside the annular desulfurization layer. The gas collecting cavity and the buffer cavity are not directly connected, and part of the buffer cavity is located between the annular desulfurization layer and the heat insulation layer; the desulfurizer is filled in the annular desulfurization layer, and the annular desulfurization layer is connected to the adjacent cavity only through the inner wall surface and the outer wall surface; a gas outlet is provided on the gas collecting cavity; The cooling structure is arranged in the buffer cavity and between the heat insulation layer and the annular desulfurization layer.

2. The integrated blast furnace gas desulfurization device according to claim 1, characterized in that: An annular baffle is arranged in the heating cavity, which divides the heating cavity into an inner layer and an outer layer. The heating device and the gas inlet are both located in the inner layer. A plurality of through holes are evenly spaced on the annular baffle.

3. The integrated blast furnace gas desulfurization device according to claim 1, characterized in that: The heating structure includes a heating coil arranged in the heating cavity. The top end of the heating coil passes through the top of the cylindrical structure and is connected to an external steam supply source. The bottom end of the heating coil passes through the bottom of the heating cavity, passes through the transition cavity, and passes through the side wall of the upper space to serve as a steam outlet. A head is provided at the bottom end of the heating coil.

4. The integrated blast furnace gas desulfurization device according to claim 1, characterized in that: The annular hydrolysis layer comprises an inner annular grid plate, an outer annular grid plate, an arc-shaped bottom sealing plate, a plurality of first support members, and a hydrolyzing agent filling port and a hydrolyzing agent unloading port. The top ends of the inner and outer annular grid plates are fixed on the lower surface of the top plate of the cylindrical structure, and the arc-shaped bottom sealing plate is fixedly connected to the bottom ends of the inner and outer annular grid plates; the two ends of the plurality of first support members are fixedly connected between the outer annular grid plate and the inner wall surface of the cylindrical structure; a plurality of hydrolyzing agent filling ports are arranged through the top plate of the cylindrical structure and are located between the inner and outer annular grid plates; a plurality of hydrolyzing agent unloading ports are arranged on the arc-shaped bottom sealing plate and are located between the inner and outer annular grid plates, and the hydrolyzing agent unloading ports pass through the side wall of the upper space; a coal gas inlet is arranged through the top plate of the cylindrical structure and is located in the inner annular grid plate.

5. The integrated blast furnace gas desulfurization device according to claim 1, characterized in that: The annular desulfurization layer includes an inner annular grid plate, an outer annular grid plate, an upper arc-shaped sealing plate and a lower arc-shaped sealing plate, a plurality of second supporting members, and a desulfurizer loading port and a desulfurizer unloading port. The top ends of the inner and outer annular grid plates are fixedly connected to the upper arc-shaped sealing plate, and the bottom ends of the inner and outer annular grid plates are fixedly connected to the lower arc-shaped sealing plate; the two ends of the plurality of second supporting members are fixedly connected between the outer annular grid plate and the inner wall surface of the cylindrical structure; a plurality of desulfurizer filling ports are arranged through the upper arc-shaped sealing plate and are located between the inner and outer annular grid plates; a plurality of hydrolyzing agent unloading ports are arranged on the lower arc-shaped sealing plate and are located between the inner and outer annular grid plates, and the hydrolyzing agent unloading ports pass through the side wall of the lower space; the gas outlet is arranged through the side wall of the cylindrical structure and is connected to the area where the lower arc-shaped sealing plate is located between the inner annular grid plates.

6. The integrated blast furnace gas desulfurization device according to claim 1, characterized in that: The heat-insulating layer comprises a frame, communicating holes fixed on the frame, and heat-insulating foam material filled in the frame.

7. The integrated blast furnace gas desulfurization device according to claim 1, characterized in that: The connecting through hole adopts a zoom nozzle-like structure.

8. The integrated blast furnace gas desulfurization device according to claim 1, characterized in that: In order to facilitate the maintenance of the device, multiple inspection manholes are provided in the upper space and the lower space; the cooling structure includes a chilled water heat exchange coil arranged under the insulation layer, and both ends of the chilled water heat exchange coil respectively penetrate the side wall of the lower space and are respectively connected to the external water supply component and the water storage component.

9. The integrated blast furnace gas desulfurization device according to claim 1, characterized in that: The annular hydrolysis layer and the heating structure are exchanged to the lower space, and the annular desulfurization layer and the cooling structure are exchanged to the upper space.

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