Sulfur recovery tail gas treatment device

Abstract

The utility model discloses a sulfur recovery tail gas treatment device. The sulfur recovery tail gas treatment device comprises a main body assembly, wherein the main body assembly comprises a device body and an exhaust inlet; the exhaust inlet is fixedly connected to the rear end of the device body; the treatment assembly comprises an absorption area and an oxidation area; the absorption area is arranged at the upper end of the interior of the device body, the oxidation area is arranged at the middle end of the interior of the device body, and the treatment assembly further comprises a neutralization area; the neutralization area is arranged at the lower end of the interior of the device body, gypsum and calcium carbonate are arranged in the neutralization area, the absorption area is arranged above the oxidation area, the oxidation area is arranged above the neutralization area, and the main body assembly further comprises an exhaust outlet and a filter screen plate. The problems that according to an existing desulfurization system, sulfur recovery tail gas is complex in component, large in flue gas amount and difficult to treat, the flue gas is directly discharged into the atmosphere to pollute the environment, and environmental protection parameters of the desulfurization system frequently exceed the standard due to the fact that the desulfurization system is connected for treatment at present are solved.

Description

Technical Field

[0001] This utility model relates to the field of sulfur recovery tail gas treatment technology, and in particular to a sulfur recovery tail gas treatment device. Background Technology

[0002] Sulfur recovery tail gas treatment refers to the treatment of tail gas generated during the sulfur recovery process to reduce the emission of harmful substances and meet environmental protection standards.

[0003] Existing desulfurization systems produce sulfur recovery tail gas with complex components and large volumes, making it difficult to treat and directly releasing it into the atmosphere, polluting the environment. Currently, the desulfurization system is used for treatment, which leads to frequent exceedances of environmental parameters of the desulfurization system. Utility Model Content

[0004] The purpose of this utility model is to provide a sulfur recovery tail gas treatment device to solve the problem mentioned in the background art that the existing desulfurization system has complex sulfur recovery tail gas composition, large flue gas volume, is difficult to treat, and is directly discharged into the atmosphere to pollute the environment. Currently, it is connected to the desulfurization system for treatment, which leads to the frequent exceedance of environmental parameters of the desulfurization system.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0006] This utility model is a sulfur recovery tail gas treatment device, comprising:

[0007] Main Components: The main components include the device body and the exhaust inlet;

[0008] The exhaust inlet is fixedly connected to the rear end of the device body;

[0009] Processing component: The processing component includes an absorption region and an oxidation region;

[0010] The absorption zone is located at the upper part of the device body, and the oxidation zone is located at the middle part of the device body.

[0011] Furthermore, the processing component also includes a neutralization region;

[0012] The neutralization zone is located at the lower interior of the device body.

[0013] Furthermore, the neutralization zone is provided with gypsum and calcium carbonate respectively.

[0014] Furthermore, the absorption region is disposed above the oxidation region, and the oxidation region is disposed above the neutralization region.

[0015] Furthermore, the main component also includes an exhaust outlet and a filter plate;

[0016] The exhaust outlet is located at one end of the top of the device body, and the filter plate is installed inside the exhaust outlet.

[0017] Furthermore, it also includes auxiliary components;

[0018] The auxiliary components include a slot, a rotating ring, a fixed plate, and a rotating gear;

[0019] The slots are located on both sides of the top of the device body. The rotating ring is rotatably connected to the inside of the slots. The fixed plate is fixedly connected to both sides of the inner wall of the exhaust outlet. The rotating gear is rotatably connected to one side of the fixed plate. The rotating ring and the rotating gear are meshed.

[0020] Furthermore, the auxiliary components also include a screw, a screw barrel, and a smoke baffle.

[0021] The screw is fixedly connected to one end of the rotating gear, the screw barrel is fixedly connected to both sides of the rear end of the filter plate, and the smoke-proof plate is fixedly connected to the rear side of the filter plate.

[0022] Furthermore, the screw and the barrel are arranged on the same central axis.

[0023] Compared with existing technologies, the advantages of this utility model are:

[0024] This invention, by setting up processing components and through the auxiliary cooperation between the absorption zone, oxidation zone and neutralization zone, can reasonably treat sulfur recovery tail gas. It can use limestone and ammonia water to treat sulfur dioxide and ammonia in sulfur tail gas, reduce environmental risks, avoid the risk of sulfur tail gas being directly discharged into the atmosphere, and ensure that environmental parameters meet emission standards. It can be widely used in the chemical tail gas treatment industry.

[0025] Based on the above-mentioned beneficial effects, an auxiliary component is provided. Through the meshing between the rotating ring and the rotating gear, the filter screen can be driven to slide vertically out of the interior of the exhaust outlet during the rotation of the rotating ring, which can assist the staff in disassembling and cleaning the filter screen. Attached Figure Description

[0026] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is an axonometric view of the present invention;

[0028] Figure 2 This is an exploded view of the present invention;

[0029] Figure 3This is a cross-sectional view of the present invention;

[0030] Figure 4 This is a three-dimensional view of the filter plate of this utility model.

[0031] The attached diagram lists the components represented by each number as follows:

[0032] 11. Device body; 12. Exhaust inlet; 13. Exhaust outlet; 14. Filter plate;

[0033] 21. Absorption zone; 22. Oxidation zone; 23. Neutralization zone;

[0034] 31. Empty slot; 32. Rotating ring; 33. Fixed plate; 34. Rotating gear; 35. Screw; 36. Screw barrel; 37. Smoke baffle. Detailed Implementation

[0035] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0036] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0037] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0038] Please see Figure 1-4 As shown, this embodiment is a sulfur recovery tail gas treatment device, including:

[0039] Main components: The main components include the device body 11 and the exhaust inlet 12;

[0040] The exhaust inlet 12 is fixedly connected to the rear end of the device body 11;

[0041] The main components also include an exhaust outlet 13 and a filter plate 14;

[0042] The exhaust outlet 13 is located at the top end of the device body 11, and the filter plate 14 is installed inside the exhaust outlet 13.

[0043] The main body 11 is used to treat the sulfur recovery tail gas, the exhaust inlet 12 is used to provide space for the sulfur recovery tail gas to be exhausted, the exhaust outlet 13 is used to discharge the flue gas, and the filter plate 14 is used to filter and discharge the final treated tail gas.

[0044] After the sulfur recovery tail gas is discharged into the interior of the device body 11 through the exhaust inlet 12, it is treated inside the device body 11 and then discharged from the interior of the exhaust outlet 13 through the filter screen 14.

[0045] All of the above parts are existing technologies;

[0046] Processing components: The processing components include an absorption region 21 and an oxidation region 22;

[0047] The absorption region 21 is located at the upper part of the inside of the device body 11, and the oxidation region 22 is located at the middle part of the inside of the device body 11.

[0048] The processing components also include neutralization zone 23;

[0049] Neutralization zone 23 is located at the lower interior of the device body 11;

[0050] The absorption zone 21 is used to dissolve and absorb SO2 and SO3 in the flue gas during the process of fully contacting the absorption slurry. The oxidation zone 22 is used to dissolve the tail gas in water to become hydrofluoric acid and hydrochloric acid. The neutralization zone 23 is used to store gypsum and calcium carbonate.

[0051] Through the auxiliary coordination between absorption zone 21, oxidation zone 22 and neutralization zone 23, sulfur recovery tail gas can be properly treated.

[0052] Working principle: When treating sulfur recovery tail gas;

[0053] First, the sulfur recovery tail gas can be introduced into the interior of the device body 11 through the exhaust inlet 12, allowing the sulfur recovery tail gas to enter the interior of the absorption zone 21. Utilizing the principle of chemical reaction, SO2 and SO3 in the flue gas are dissolved and absorbed during the process of full contact with the absorption slurry, and simultaneously sink into the oxidation zone 22. SO2 + H2O ←→ H++ HSO3 ←→ 2H++ SO32- SO3 + H2O ==== H2SO4 HF and HCl are easily dissolved in water to become hydrofluoric acid and hydrochloric acid.

[0054] Next, limestone slurry is added to the circulating slurry inside the neutralization zone 23 to react with dissolved SO2 and other substances to generate stable calcium salts. The CaCO3 in the slurry is then dissociated in the following manner.

[0055] This step, through modification, can utilize limestone and ammonia water to treat sulfur dioxide and ammonia in sulfur tail gas, reducing environmental risks.

[0056] Please see Figure 1-4 As shown, this embodiment, based on the above embodiment, also includes auxiliary components;

[0057] The auxiliary components include a slot 31, a rotating ring 32, a fixed plate 33, and a rotating gear 34;

[0058] The slots 31 are formed on both sides of the top of the device body 11. The rotating ring 32 is rotatably connected to the inside of the slots 31. The fixed plate 33 is fixedly connected to both sides of the inner wall of the exhaust outlet 13. The rotating gear 34 is rotatably connected to one side of the fixed plate 33. The rotating ring 32 and the rotating gear 34 are meshed.

[0059] The auxiliary components also include a screw 35, a screw barrel 36, and a smoke baffle 37;

[0060] The screw 35 is fixedly connected to one end of the rotating gear 34, the screw barrel 36 is fixedly connected to both sides of the rear end of the filter plate 14, and the smoke baffle 37 is fixedly connected to the rear side of the filter plate 14.

[0061] The slot 31 is used to provide space for the rotating ring 32 to rotate. The rotating gear 34 is located inside the rotating ring 32. The screw 35 and the screw barrel 36 are located on the same central axis.

[0062] Through the meshing between the rotating ring 32 and the rotating gear 34, the filter screen 14 can be driven to slide vertically out of the interior of the exhaust outlet 13 during the rotation of the rotating ring 32.

[0063] Working principle: When staff discharge compliant flue gas;

[0064] First, by rotating the rotating ring 32 inside the empty slot 31 clockwise, the rotating ring 32 can drive the rotating gear 34 meshing with the inner side to rotate, so that the rotating gear 34 drives the screw 35 fixedly connected at one end to rotate as it rotates on one side of the fixed plate 33.

[0065] Next, the screw barrel 36 can slide vertically along the threaded path outside the screw 35, the filter screen plate 14 with the screw barrel 36 fixedly connected to the rear end can slide vertically, and the filter screen plate 14 can slide out from the exhaust outlet 13.

[0066] This step can assist staff in disassembling and cleaning the filter screen 14.

[0067] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0068] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A sulfur recovery tail gas treatment device, characterized in that, include: Main Components: The main components include the device body (11) and the exhaust inlet (12); The exhaust inlet (12) is fixedly connected to the rear end of the device body (11); Processing component: The processing component includes an absorption region (21) and an oxidation region (22); The absorption zone (21) is located at the upper part of the device body (11), and the oxidation zone (22) is located at the middle part of the device body (11).

2. The sulfur recovery tail gas treatment device according to claim 1, characterized in that, The processing component also includes a neutralization zone (23); The neutralization zone (23) is located at the lower end of the interior of the device body (11).

3. The sulfur recovery tail gas treatment device according to claim 2, characterized in that, The neutralization zone (23) is provided with gypsum and calcium carbonate respectively.

4. The sulfur recovery tail gas treatment device according to claim 1, characterized in that, The absorption region (21) is disposed above the oxidation region (22), and the oxidation region (22) is disposed above the neutralization region (23).

5. The sulfur recovery tail gas treatment device according to claim 1, characterized in that, The main component also includes an exhaust outlet (13) and a filter plate (14); The exhaust outlet (13) is located at the top end of the device body (11), and the filter plate (14) is installed inside the exhaust outlet (13).

6. The sulfur recovery tail gas treatment device according to claim 1, characterized in that, It also includes auxiliary components; The auxiliary components include a slot (31), a rotating ring (32), a fixed plate (33), and a rotating gear (34); The slot (31) is opened on both sides of the top of the device body (11). The rotating ring (32) is rotatably connected to the inside of the slot (31). The fixed plate (33) is fixedly connected to both sides of the inner wall of the exhaust outlet (13). The rotating gear (34) is rotatably connected to one side of the fixed plate (33). The rotating ring (32) and the rotating gear (34) are meshed.

7. The sulfur recovery tail gas treatment device according to claim 6, characterized in that, The auxiliary components also include a screw (35), a screw barrel (36), and a smoke baffle (37); The screw (35) is fixedly connected to one end of the rotating gear (34), the screw barrel (36) is fixedly connected to both sides of the rear end of the filter plate (14), and the smoke baffle (37) is fixedly connected to the rear side of the filter plate (14).

8. The sulfur recovery tail gas treatment device according to claim 7, characterized in that, The screw (35) and the barrel (36) are arranged on the same central axis.

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