Fine desulfurization device for blast furnace gas

Abstract

The utility model provides a blast furnace gas fine desulfurization device, and relates to the technical field of blast furnace gas desulfurization, the blast furnace gas fine desulfurization device comprises a tower body, a ventilation assembly, a recovery assembly and a spraying assembly, a first partition plate and a plurality of second partition plates are fixedly arranged in the tower body, and the second partition plates are located above the first partition plate; the multiple second partition plates are sequentially arranged in a staggered mode from top to bottom, and the second partition plates and the tower body are combined to form a serpentine channel; the coal gas is introduced into the accumulated catalyst liquid, so that the coal gas is in full contact with the catalyst liquid, the reaction is more complete, and the desulfurization effect is improved; the spraying assembly is arranged, so that the gas and the catalyst liquid are subjected to contact reaction again, and the desulfurization effect is further improved; by arranging the serpentine channel, the flowing time of coal gas in the tower body can be prolonged, so that the contact reaction time of the coal gas and catalyst liquid is prolonged, and the desulfurization effect is further improved; by arranging the recovery assembly, cyclic utilization of the catalyst liquid is achieved.

Description

Technical Field

[0001] The present application relates to the technical field of blast furnace gas desulfurization, and in particular to a blast furnace gas fine desulfurization device. Background Art

[0002] Blast furnace gas is a combustible by-product of the blast furnace ironmaking process. Since blast furnace gas contains H2S and organic sulfur, the exhaust gas emitted after combustion will contain SO2, which cannot meet the ultra-low emission requirements. Therefore, the blast furnace gas must be subjected to fine desulfurization treatment. Currently, most blast furnace gas desulfurization is carried out by spraying catalyst liquid through pipelines. However, the contact between the gas and the sprayed catalyst liquid is not sufficient, the reaction is not complete, and the desulfurization effect needs to be improved. Summary of the Invention

[0003] The purpose of the embodiments of the present application is to provide a blast furnace gas fine desulfurization device, which can solve the technical problem that most blast furnace gas is currently desulfurized by spraying catalyst liquid through pipelines, but the contact between the gas and the sprayed catalyst liquid is not sufficient, the reaction is not complete, and the desulfurization effect needs to be improved.

[0004] The present application provides a blast furnace gas fine desulfurization device, comprising a tower body, a ventilation assembly, a recovery assembly, and a spray assembly. A first baffle and a plurality of second baffles are fixedly arranged in the tower body, the second baffles are located above the first baffles, and the plurality of second baffles are staggered from top to bottom. The second baffles and the tower body are combined to form a serpentine channel. An air inlet pipe is provided in communication with the side of the tower body, the air inlet pipe is located below the first baffle, and an air outlet pipe is provided in communication with the top of the tower body.

[0005] The ventilation assembly includes a first ventilation pipe and a second ventilation pipe, the air inlet end of the first ventilation pipe passes through the first partition, and the second ventilation pipe is connected to the first ventilation pipe;

[0006] The recovery assembly is connected to the side of the tower body;

[0007] The spray component is arranged on the second partition plate, and the spray component is connected to the recovery component.

[0008] There are multiple ventilation components, and the multiple ventilation components are evenly distributed on the first partition.

[0009] Wherein, the recovery component includes a recovery pipe and a recovery box, and the recovery pipe is connected and arranged between the side of the tower body and the recovery box.

[0010] The spray assembly includes a liquid extraction pump, a spray pipe and a nozzle. The spray pipe is arranged on the second partition. The nozzle is connected to the spray pipe. The liquid extraction pump is connected to the recovery box and the spray pipe respectively.

[0011] There are multiple nozzles, and the multiple nozzles are evenly distributed on the spray pipe.

[0012] Wherein, a drainage pipe is provided in communication with the side of the tower body, and a valve is provided on the drainage pipe.

[0013] Beneficial effects of the utility model:

[0014] The utility model provides a blast furnace gas fine desulfurization device. When in use, the spray component is turned on to spray out the catalyst liquid. The catalyst liquid drips along the second partition and accumulates on the first partition, and submerges the gas outlet end of the second vent pipe. Then, the coal gas is introduced into the tower body from the air inlet pipe, and then the coal gas flows through the first vent pipe and flows out from the second vent pipe. The coal gas contacts and reacts with the catalyst liquid accumulated on the first partition. Then, the coal gas continues to rise and flows through the serpentine channel. The coal gas contacts and reacts with the sprayed catalyst liquid again, and then the gas is discharged from the gas outlet pipe. The recovery component will discharge the excess catalyst liquid out of the tower body and collect it, so that the catalyst liquid The liquid level in the tower body remains stable, and the catalyst liquid collected by the recovery component will be extracted by the spray component and sprayed again to achieve recycling; the present application allows the coal gas to pass into the accumulated catalyst liquid, so that the coal gas and the catalyst liquid are fully in contact, the reaction is more complete, and the desulfurization effect is improved; the present application sets a spray component to allow the coal gas and the catalyst liquid to contact and react again, further improving the desulfurization effect; the present application sets a serpentine channel to extend the flow time of the coal gas in the tower body, thereby extending the contact reaction time of the coal gas and the catalyst liquid, further improving the desulfurization effect; the present application sets a recovery component to achieve recycling of the catalyst liquid. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0016] Figure 1 A schematic cross-sectional view of the overall main structure in some embodiments of the present application;

[0017] Figure 2 This is a schematic diagram of a top view of the first partition structure in some embodiments of the present application.

[0018] The reference numerals are:

[0019] 1. Tower body; 11. First baffle; 12. Second baffle; 13. Serpentine channel; 14. Air inlet pipe; 15. Air outlet pipe; 16. Liquid drain pipe; 17. Valve;

[0020] 2. Ventilation assembly; 21. First vent pipe; 22. Second vent pipe;

[0021] 3. Recovery component; 31. Recovery tube; 32. Recovery box;

[0022] 4. Spray assembly; 41. Liquid pump; 42. Spray pipe; 43. Nozzle. DETAILED DESCRIPTION

[0023] To make the objectives, technical solutions, and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Generally, the components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.

[0024] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for protection, but merely represents selected embodiments of the present application. All other embodiments obtained by persons of ordinary skill in the art based on the embodiments in the present application without creative work are within the scope of protection of the present application.

[0025] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0026] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the product of this application is typically placed when in use. These terms are intended only to facilitate the description of this application and simplify the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," "third," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0027] Furthermore, terms such as "horizontal," "vertical," and "overhanging" do not necessarily imply that a component must be absolutely horizontal or overhanging, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but rather that it can be slightly tilted.

[0028] It should also be noted that, in the description of this application, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0029] like Figure 1 and 2 As shown, the embodiment of the present application provides a blast furnace gas fine desulfurization device, including a tower body 1, a ventilation component 2, a recovery component 3 and a spray component 4. A first baffle 11 and a plurality of second baffles 12 are fixedly arranged in the tower body 1. The second baffle 12 is located above the first baffle 11. The plurality of second baffles 12 are staggered from top to bottom. The second baffles 12 and the tower body 1 are combined to form a serpentine channel 13. The side of the tower body 1 is connected to an air inlet pipe 14, which is located below the first baffle 11. The top of the tower body 1 is connected to an air outlet pipe 15.

[0030] The ventilation assembly 2 includes a first ventilation pipe 21 and a second ventilation pipe 22. The air inlet end of the first ventilation pipe 21 passes through the first partition 11, and the second ventilation pipe 22 is connected to the first ventilation pipe 21.

[0031] The recovery assembly 3 is connected to the side of the tower body 1;

[0032] The spray assembly 4 is disposed on the second partition plate 12 , and the spray assembly 4 is connected to the recovery assembly 3 .

[0033] When in use, the spray assembly 4 is turned on to spray out the catalyst liquid. The catalyst liquid drips along the second partition 12 and accumulates on the first partition 11, and submerges the gas outlet end of the second vent pipe 22. Then, the coal gas is introduced into the tower body 1 from the air inlet pipe 14. The coal gas then flows through the first vent pipe 21 and flows out from the second vent pipe 22. The coal gas contacts and reacts with the catalyst liquid accumulated on the first partition 11. Then, the coal gas continues to rise and flows through the serpentine channel 13. The coal gas contacts and reacts with the sprayed catalyst liquid again. Then, the coal gas is discharged from the gas outlet pipe 15. The recovery assembly 3 will discharge the excess catalyst liquid from the tower body 1 and collect it, so that the catalyst liquid level is Keep stable, the catalyst liquid collected by the recovery component 3 will be extracted by the spray component 4 and sprayed again to achieve recycling; the present application allows the coal gas to pass into the accumulated catalyst liquid, so that the coal gas and the catalyst liquid are fully in contact, the reaction is more complete, and the desulfurization effect is improved; the present application sets the spray component 4 to allow the coal gas and the catalyst liquid to contact and react again, further improving the desulfurization effect; the present application sets the serpentine channel 13 to extend the flow time of the coal gas in the tower body 1, thereby extending the contact reaction time of the coal gas and the catalyst liquid, and further improving the desulfurization effect; the present application sets the recovery component 3 to achieve recycling of the catalyst liquid.

[0034] like Figure 1 and 2 As shown, in this embodiment, multiple ventilation components 2 are provided, and the multiple ventilation components 2 are evenly distributed on the first partition 11; the multiple ventilation components 2 allow the coal gas to pass into the catalyst liquid from the multiple second ventilation pipes 22, so that the coal gas and the catalyst liquid are fully in contact, the reaction is more complete, and the desulfurization effect is improved.

[0035] like Figure 1 As shown, in this embodiment, the recovery component 3 includes a recovery pipe 31 and a recovery box 32, and the recovery pipe 31 is connected between the side of the tower body 1 and the recovery box 32; when in use, when the catalyst liquid level is higher than the recovery pipe 31, the excess catalyst liquid will be discharged from the recovery pipe 31 and enter the recovery box 32 for collection, so that the catalyst liquid level remains stable.

[0036] like Figure 1 As shown, in this embodiment, the spray assembly 4 includes a liquid pump 41, a spray pipe 42 and a nozzle 43. The spray pipe 42 is arranged on the second partition 12, and the nozzle 43 is connected to the spray pipe 42. The liquid pump 41 is connected to the recovery box 32 and the spray pipe 42 respectively.

[0037] When in use, the liquid extraction pump 41 is turned on to extract the catalyst liquid in the recovery tank 32 into the spray pipe 42, and then sprayed out from the nozzle 43 for spraying to achieve recycling.

[0038] like Figure 1As shown, in this embodiment, a plurality of nozzles 43 are provided, and the plurality of nozzles 43 are evenly distributed on the spray pipe 42; the plurality of nozzles 43 can evenly spray the catalyst liquid, so that the coal gas and the catalyst liquid are fully in contact, the reaction is more complete, and the desulfurization effect is improved.

[0039] like Figure 1 As shown, in this embodiment, a drain pipe 16 is provided on the side of the tower body 1 , and a valve 17 is provided on the drain pipe 16 ; when the catalyst liquid needs to be replaced, the valve 17 is opened and the catalyst liquid in the tower body 1 can be discharged from the drain pipe 16 .

[0040] Working principle: When the blast furnace gas fine desulfurization device provided in the present application is in use, the spray assembly 4 is turned on to spray out the catalyst liquid. The catalyst liquid drips along the second partition 12 and accumulates on the first partition 11, and submerges the gas outlet end of the second vent pipe 22. The coal gas is then introduced into the tower body 1 from the air inlet pipe 14. The coal gas then flows through the first vent pipe 21 and flows out from the second vent pipe 22. The coal gas contacts and reacts with the catalyst liquid accumulated on the first partition 11. The coal gas then continues to rise and flows through the serpentine channel 13. The coal gas contacts and reacts with the sprayed catalyst liquid again. The coal gas is then discharged from the outlet pipe 15. When the catalyst liquid level is higher than the recovery pipe 31, the excess catalyst liquid will be discharged from the recovery pipe 31 and enter the recovery box 32 for collection, so that the catalyst liquid level remains stable. The liquid suction pump 41 is turned on to extract the catalyst liquid in the recovery box 32 into the spray pipe 42, and then it is sprayed out from the nozzle 43 and sprayed again to achieve recycling.

[0041] The above are merely preferred embodiments of the present application and are not intended to limit the present application. Those skilled in the art will readily appreciate that various modifications and variations are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present application shall be included within the scope of protection of the present application.

Claims

1. A blast furnace gas fine desulfurization device, characterized by: The invention comprises a tower body (1), a ventilation component (2), a recovery component (3) and a spray component (4); a first partition (11) and a plurality of second partitions (12) are fixedly arranged in the tower body (1); the second partition (12) is located above the first partition (11); the plurality of second partitions (12) are staggered from top to bottom; the second partitions (12) and the tower body (1) are combined to form a serpentine channel (13); an air inlet pipe (14) is connected to the side of the tower body (1); the air inlet pipe (14) is located below the first partition (11); and an air outlet pipe (15) is connected to the top of the tower body (1); The ventilation assembly (2) comprises a first ventilation pipe (21) and a second ventilation pipe (22), wherein the air inlet end of the first ventilation pipe (21) passes through the first partition plate (11), and the second ventilation pipe (22) is arranged in communication with the first ventilation pipe (21); The recovery assembly (3) is connected to the side of the tower body (1); The spray assembly (4) is arranged on the second partition (12), and the spray assembly (4) is connected to the recovery assembly (3).

2. The blast furnace gas fine desulfurization device according to claim 1, characterized in that: A plurality of the ventilation components (2) are provided, and the plurality of ventilation components (2) are evenly distributed on the first partition plate (11).

3. The blast furnace gas fine desulfurization device according to claim 1, characterized in that: The recovery assembly (3) comprises a recovery pipe (31) and a recovery box (32), and the recovery pipe (31) is arranged in communication between the side of the tower body (1) and the recovery box (32).

4. The blast furnace gas fine desulfurization device according to claim 3, characterized in that: The spray assembly (4) comprises a liquid extraction pump (41), a spray pipe (42) and a nozzle (43); the spray pipe (42) is arranged on the second partition (12); the nozzle (43) is connected to the spray pipe (42); the liquid extraction pump (41) is connected to the recovery box (32) and the spray pipe (42) respectively.

5. The blast furnace gas fine desulfurization device according to claim 4, characterized in that: A plurality of the nozzles (43) are provided, and the plurality of the nozzles (43) are evenly distributed on the spray pipe (42).

6. The blast furnace gas fine desulfurization device according to claim 1, characterized in that: A liquid discharge pipe (16) is provided in communication with the side of the tower body (1), and a valve (17) is provided on the liquid discharge pipe (16).

Images