Desulfurizing tower for reducing caking of desulfurizing agent by adopting nitrogen vulcanization

Abstract

The desulfurizing tower comprises a desulfurizing tower body with a coal gas inlet at the bottom, the desulfurizing tower body comprises an inner cylinder and an outer cylinder which are located inside and communicated with each other, the upper end of the inner cylinder extends to the outside and is provided with a coal gas outlet, and the lower end of the outer cylinder is provided with a coal gas inlet. Coal gas is configured to sequentially pass through the coal gas inlet and the outer cylinder body and is finally discharged from the coal gas outlet; a desulfurizing agent interlayer is arranged in the outer barrel, the lower end of the outer part of the outer barrel is communicated with a nitrogen injection device, and the nitrogen injection device is configured to be capable of injecting nitrogen into the desulfurizing agent interlayer. According to the desulfurization tower disclosed by the utility model, the nitrogen injection device is arranged and can inject nitrogen into the desulfurizer interlayer, so that when a user disassembles the desulfurizer, the nitrogen injection device can be started to inject nitrogen to sulfurize the desulfurizer, and the caking of the desulfurizer in the desulfurization tower can be effectively reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of dry fine desulfurization of blast furnace gas in steel metallurgy, in particular to a desulfurization tower which adopts nitrogen vulcanization to reduce agglomeration of a desulfurizer. Background Art

[0002] With the country's ultra-low emission standards for various pollutants emitted by steel enterprises, blast furnace gas fine desulfurization systems are being continuously promoted and implemented in the metallurgical field. The desulfurization tower is a crucial component of the blast furnace gas dry fine desulfurization system. Its primary function is to use a desulfurizer to adsorb inorganic sulfur (primarily SO2, H2S, etc.) from the blast furnace gas. To ensure the adsorption effect, the desulfurizer needs to be regularly replaced and regenerated. Before adsorption, the desulfurizer must undergo a hydrolysis catalytic process to increase the water content of the blast furnace gas. This, over long-term use, can cause some of the desulfurizer to become damp and agglomerated, preventing some of the desulfurizer from being discharged properly during the unloading process, thus affecting the normal operation of the desulfurization tower system. Utility Model Content

[0003] In response to the shortcomings of the existing technology, the utility model provides a desulfurization tower that uses nitrogen vulcanization to reduce the agglomeration of the desulfurizer. By setting up a nitrogen blowing device and configuring the nitrogen blowing device to be able to blow nitrogen into the desulfurizer interlayer, when the user disassembles the desulfurizer, the nitrogen blowing device can be started to blow out nitrogen to cause the desulfurizer to be vulcanized, thereby effectively reducing the agglomeration of the desulfurizer in the desulfurization tower.

[0004] To achieve the above-mentioned purpose, the present invention is realized through the following technical solutions:

[0005] A desulfurization tower that uses nitrogen sulfidation to reduce desulfurizer agglomeration includes a desulfurization tower body with a gas inlet at the bottom, the desulfurization tower body includes an inner cylinder and an outer cylinder located inside and connected to each other, the upper end of the inner cylinder extends to the outside and is provided with a gas outlet, and the gas is configured to pass through the gas inlet and the outer cylinder in sequence and finally be discharged from the gas outlet of the inner cylinder; the upper and lower ends of the desulfurization tower body are respectively provided with a feed port and a discharge port, and the interior of the outer cylinder is provided with a desulfurizer interlayer, and the lower end of the outside is connected to a nitrogen blowing device, and the nitrogen blowing device is configured to be able to blow nitrogen into the desulfurizer interlayer.

[0006] Furthermore, the nitrogen blowing device includes a nitrogen storage tank, a nitrogen blowing pipe and a nitrogen blowing port. The nitrogen blowing pipe is connected to the nitrogen storage tank and the nitrogen blowing port, and the nitrogen blowing port penetrates the outer wall of the outer cylinder to the desulfurizer interlayer.

[0007] Furthermore, the nitrogen blowing device also includes a nitrogen pressure regulating valve and a nitrogen control valve, which are arranged on the nitrogen blowing pipe and are connected to the nitrogen blowing pipe.

[0008] Furthermore, the nitrogen blowing pipe is a hose.

[0009] Furthermore, the nitrogen blowing port is arranged near the discharge port.

[0010] Furthermore, the nitrogen blowing port is arranged to be inclined upward toward the feed port of the outer cylinder.

[0011] Furthermore, an inspection hole is provided on the desulfurization tower body, which passes through the outer cylinder and is located above the nitrogen injection port.

[0012] Furthermore, it includes a relief component, which includes a relief pipe and a relief control valve connected to the relief pipe, and the relief pipe is connected to the upper end of the inner cylinder.

[0013] Furthermore, it also includes a safety valve, which is connected to the relief pipe.

[0014] Furthermore, the outer cylinder is an annular body, and the inner cylinder is surrounded by nitrogen blowing ports and is connected to the nitrogen storage tank through a nitrogen blowing pipe.

[0015] The above technical solution has the following advantages or beneficial effects:

[0016] The desulfurization tower described in the utility model uses nitrogen vulcanization to reduce desulfurizer agglomeration. By providing a nitrogen blowing device configured to blow nitrogen into the desulfurizer interlayer, the user can activate the nitrogen blowing device to blow out nitrogen to vulcanize the desulfurizer when removing the desulfurizer, thereby effectively reducing desulfurizer agglomeration in the desulfurization tower. This improves the problem of desulfurizer in existing desulfurization towers becoming damp and agglomerated, resulting in some desulfurizer being unable to be discharged normally during the unloading process, thereby affecting the normal operation of the desulfurization tower system. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of a desulfurization tower that uses nitrogen vulcanization to reduce desulfurizer agglomeration in an embodiment of the present invention.

[0018] Description of labels:

[0019] 1. Desulfurization tower body, 2. Outer cylinder, 3. Desulfurizer interlayer, 4. Inner cylinder, 5. Nitrogen storage tank, 6. Nitrogen injection pipe, 7. Nitrogen injection port, 8. Nitrogen pressure regulating valve, 9. Nitrogen control valve, 10. Release pipe, 20. Release control valve, 30. Safety valve, 40. Partition plate, 11. Gas inlet, 12. Inspection hole, 21. Feed port, 22. Discharge port, 41. Gas outlet. DETAILED DESCRIPTION

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0021] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0022] Please refer to the attached Figure 1 An embodiment of the present invention provides a desulfurization tower that uses nitrogen sulfidation to reduce desulfurizer agglomeration, comprising a desulfurization tower body 1 with a gas inlet 11 at the bottom, the desulfurization tower body 1 comprising an inner cylinder 4 and an outer cylinder 2 located inside and interconnected, the upper end of the inner cylinder 4 extending to the outside and provided with a gas outlet 41, the gas is configured to pass through the gas inlet 11 and the outer cylinder 2 in sequence, and finally be discharged from the gas outlet 41 of the inner cylinder 4; the upper and lower ends of the desulfurization tower body (1) are respectively provided with a plurality of feed ports 21 and corresponding discharge ports 22, and the interior of the outer cylinder 2 is provided with a desulfurizer interlayer 3, and the lower end of the outside is connected to a nitrogen blowing device, and the nitrogen blowing device is configured to be able to blow nitrogen into the desulfurizer interlayer 3. It can be understood that in this embodiment, by providing a nitrogen blowing device and the nitrogen blowing device is configured to be able to blow nitrogen into the desulfurizer interlayer 3, when the user disassembles the desulfurizer, the nitrogen blowing device can be started to blow out nitrogen to cause the desulfurizer to be sulfided, thereby effectively reducing the agglomeration of the desulfurizer in the desulfurization tower.

[0023] Please refer to the attached Figure 1 In one preferred embodiment, the outer cylinder 2 can be made of a grid plate or other materials, and a partition plate 40 is provided in the desulfurization tower body 1, through which the coal gas can first enter the outer cylinder 2 from the gas inlet 11 of the desulfurization tower body 1. After the desulfurizer interlayer 3 in the outer cylinder 2 adsorbs the inorganic sulfur in the coal gas, the coal gas will enter the inner cylinder 4 and finally be discharged from the gas outlet 41 of the inner cylinder 4.

[0024] Please refer to the attached Figure 1 In one preferred embodiment, the nitrogen injection device includes a nitrogen storage tank 5, a nitrogen injection pipe 6, and a nitrogen injection port 7. The nitrogen injection pipe 6 is connected to the nitrogen storage tank 5 and the nitrogen injection port 7. The nitrogen injection port 7 penetrates the outer wall of the outer cylinder 2 and reaches the desulfurizer interlayer 3, so that the nitrogen in the nitrogen storage tank 5 is injected into the desulfurizer interlayer 3 through the nitrogen injection pipe 6 and the nitrogen injection port 7 to vulcanize the desulfurizer. Preferably, the nitrogen injection port 7 is located near the discharge port 22 to achieve a better vulcanization effect of the desulfurizer.

[0025] Please refer to the attached Figure 1In one preferred embodiment, the nitrogen injection device further includes a nitrogen pressure regulating valve 8 and a nitrogen control valve 9, which are disposed on and connected to the nitrogen injection pipe 6. The nitrogen control valve 9 is used to control whether nitrogen is injected. The nitrogen control valve 9 is a responsive pneumatic valve, preferably a control valve that can be remotely activated. The nitrogen pressure regulating valve 8 is used to control the pressure of nitrogen supplied to the desulfurization tower.

[0026] Please refer to the attached Figure 1 In one preferred embodiment, the nitrogen blowing pipe 6 is a hose, which is convenient for installing the above-mentioned nitrogen pressure regulating valve 8 and nitrogen control valve 9. Preferably, the nitrogen blowing port 7 is arranged to be inclined upward toward the feed port 21 of the outer cylinder 2, so that the nitrogen blown from the nitrogen blowing port 7 can flow upward better, thereby enabling the desulfurizer to be better vulcanized.

[0027] Please refer to the attached Figure 1 In one preferred embodiment, an inspection hole 12 is opened on the desulfurization tower body 1, and the inspection hole 12 passes through the outer cylinder 2 and is located above the nitrogen blowing port 7.

[0028] Please refer to the attached Figure 1 In one preferred embodiment, a vent assembly is included, comprising a vent pipe 10 and a vent control valve 20 connected to the vent pipe 10. The vent pipe 10 is connected to the upper end of the inner cylinder 4. When unloading begins and the nitrogen control valve 9 is opened to allow nitrogen to be blown out, the gas outlet 41 of the inner cylinder 4 is closed. Therefore, the vent control valve 20 needs to be opened to allow excess gas inside the desulfurization tower to be discharged from the vent pipe 10 to regulate the air pressure inside the desulfurization tower and maintain the pressure inside the desulfurization tower stable. Preferably, the vent control valve 20 is also a responsive pneumatic valve and is equipped with a remote control system.

[0029] Please refer to the attached Figure 1 In one preferred embodiment, a safety valve 30 is further included. Safety valve 30 is connected to the vent pipe 10 and is used to limit the pressure within the desulfurization tower to a safe value. The set pressure of safety valve 30 should be adjusted based on the actual pressure of the nitrogen gas to be injected to ensure the safety of the desulfurization tower.

[0030] Please refer to the attached Figure 1 In one preferred embodiment, the number of feed ports or discharge ports of the desulfurization tower body 1 is 4, which are evenly distributed around the desulfurization tower body. However, those skilled in the art should understand that the feed ports or discharge ports can also be set to 6 or other numbers, and are not limited to the specific implementation method disclosed in this embodiment.

[0031] The following is the working principle of this new implementation:

[0032] When the desulfurization tower starts to remove the desulfurizer, the nitrogen control valve 9 on the nitrogen blowing pipe 6 should be remotely opened first, so that nitrogen is blown out from the nitrogen blowing port 7 through the nitrogen blowing pipe 6 to enter the desulfurizer interlayer 3. The desulfurizer is fluidized by spraying the desulfurizer with pressurized nitrogen, which can effectively reduce the agglomeration of the desulfurizer in the desulfurization tower. At the same time, the vent control valve 20 at the top is opened to keep the pressure in the desulfurization tower 1 stable.

[0033] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. These modifications or replacements do not deviate from the spirit and scope of the technical solutions of the embodiments of the present invention. Therefore, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present invention.

Claims

1. A desulfurization tower using nitrogen vulcanization to reduce desulfurizer agglomeration, characterized by: The desulfurization tower body (1) comprises a desulfurization tower body (1) having a gas inlet (11) at the bottom, the desulfurization tower body (1) comprising an inner cylinder (4) and an outer cylinder (2) located inside and connected to each other, the upper end of the inner cylinder (4) extending to the outside and provided with a gas outlet (41), the gas is configured to pass through the gas inlet (11) and the outer cylinder (2) in sequence, and finally be discharged from the gas outlet (41) of the inner cylinder (4); the upper and lower ends of the desulfurization tower body (1) are respectively provided with a feed port (21) and a discharge port (22), and a desulfurization agent interlayer (3) is provided inside the outer cylinder (2), and the lower end of the outer cylinder (2) is connected with a nitrogen blowing device, and the nitrogen blowing device is configured to be able to blow nitrogen into the desulfurization agent interlayer (3).

2. The desulfurization tower using nitrogen vulcanization to reduce desulfurizer agglomeration according to claim 1, characterized in that: The nitrogen blowing device comprises a nitrogen storage tank (5), a nitrogen blowing pipe (6) and a nitrogen blowing port (7); the nitrogen blowing pipe (6) is connected to the nitrogen storage tank (5) and the nitrogen blowing port (7); and the nitrogen blowing port (7) penetrates the outer wall of the outer cylinder (2) to the desulfurizing agent interlayer (3).

3. The desulfurization tower using nitrogen vulcanization to reduce desulfurizer agglomeration according to claim 1, characterized in that: The nitrogen blowing device further comprises a nitrogen pressure regulating valve (8) and a nitrogen control valve (9). The nitrogen pressure regulating valve (8) and the nitrogen control valve (9) are arranged on the nitrogen blowing pipe (6) and are in communication with the nitrogen blowing pipe (6).

4. The desulfurization tower using nitrogen vulcanization to reduce desulfurizer agglomeration according to claim 2, characterized in that: The nitrogen blowing port (7) is arranged near the discharge port (22).

5. The desulfurization tower using nitrogen vulcanization to reduce desulfurizer agglomeration according to claim 2, characterized in that: The nitrogen blowing pipe (6) is a hose.

6. The desulfurization tower using nitrogen vulcanization to reduce desulfurizer agglomeration according to claim 4, characterized in that: The nitrogen blowing port (7) is arranged to be inclined upward toward the feed port (21) of the outer cylinder (2).

7. The desulfurization tower using nitrogen vulcanization to reduce desulfurizer agglomeration according to claim 2, characterized in that: An inspection hole (12) is provided on the desulfurization tower body (1), and the inspection hole (12) passes through the outer cylinder (2).

8. The desulfurization tower using nitrogen vulcanization to reduce desulfurizer agglomeration according to claim 1, characterized in that: The discharge assembly comprises a discharge pipe (10) and a discharge control valve (20) connected to the discharge pipe (10); the discharge pipe (10) is connected to the upper end of the inner cylinder (4).

9. The desulfurization tower using nitrogen vulcanization to reduce desulfurizer agglomeration according to claim 8, characterized in that: The device further comprises a safety valve (30), which is communicated with the relief pipe (10).

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