Absorption tower for sulfur dioxide in flue gas

Abstract

The utility model discloses an absorption tower for sulfur dioxide in flue gas, which comprises a tower body provided with a gas inlet part, a liquid collecting part and a gas exhaust part, the flow guide cover is conical, and the flow guide cover is arranged along the axis direction of the tower body; and the spraying power mechanism is arranged at the top end of the flow guide cover. According to the utility model, flue gas enters from the gas inlet part arranged at the bottom of the tower body and then upwards enters the flow guide cover, the flue gas upwards flows along with the screw spacing between the spiral flow deflectors arranged in the flow guide cover, and the spray power mechanism arranged at the top of the flow guide cover continuously sprays reaction liquid downwards; the reaction liquid can flow downwards along the screw spacing between the spiral flow deflectors after being atomized, and drips downwards through the circulating holes to fully react with flue gas, when the equipment is used, the power part can drive the spiral flow deflectors to rotate in the flow guide cover, and when the spiral flow deflectors rotate, attachments on the inner wall of the flow guide cover can be cleaned.

Description

Technical Field

[0001] The utility model relates to the technical field of absorption towers, in particular to a sulfur dioxide absorption tower in flue gas. Background Art

[0002] Currently, with the development of industry and the concentration of population, ambient air pollution has become increasingly serious. Among the gaseous pollutants that cause atmospheric pollution, sulfur dioxide is the most important pollutant, with the largest amount, the widest impact area, and the greatest difficulty in control.

[0003] The absorption tower of the existing technology can absorb and purify sulfur dioxide, but there is a serious defect, that is, under the long-term purification state, a large amount of impurities are often easily attached to the inner side wall of the tower cavity, causing contamination, resulting in serious contamination of the side wall of the tower cavity and inability to clean. If impurities need to be cleaned, the absorption tower must be stopped and disassembled, and the side wall must be scraped manually. The operation is cumbersome and complicated, the cleaning effect is poor, and there are great limitations. Therefore, a sulfur dioxide absorption tower in flue gas is proposed to solve the above problem. Utility Model Content

[0004] The purpose of this utility model is to provide a sulfur dioxide absorption tower in flue gas in order to solve the above-mentioned shortcomings.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solution: a sulfur dioxide absorption tower in flue gas, comprising:

[0006] A tower body, wherein the tower body is provided with an air inlet portion, a liquid collecting portion and an exhaust portion;

[0007] A guide cover is conical in shape and arranged along the axis of the tower body;

[0008] A spray power mechanism, the spray power mechanism being arranged at the top of the deflector cover;

[0009] A spiral guide vane, the spiral guide vane is in contact with the inner wall of the guide cover, the spiral guide vane is in transmission connection with the spray power mechanism, and a flow hole is formed on the spiral guide vane;

[0010] The spiral guide blade is rotated to scrape off attachments on the inner wall of the guide cover, and its rotation is used to guide the gas to flow along the pitch and increase the gas-liquid contact and reaction time.

[0011] Furthermore, the top diameter of the air guide cover is smaller than the bottom diameter;

[0012] An exhaust hole is provided on the top of the deflector cover;

[0013] The spray power mechanism corresponds to the exhaust hole and is used for spraying the reaction liquid into the guide cover, so that the reaction liquid flows along the spiral guide plate and falls from the flow hole to react with the gas in the pitch.

[0014] Furthermore, a demisting structure is provided on the top of the deflector cover;

[0015] The demisting structure includes multiple groups of barrier sheets, and the multiple groups of barrier sheets are distributed in a spiral shape between the deflector and the exhaust part.

[0016] Furthermore, a power unit is provided on the side of the tower body;

[0017] The power unit is in transmission connection with the spray power mechanism;

[0018] The power unit includes a transmission belt extending into the interior of the spray power mechanism;

[0019] A transmission rotating rod is provided in the spray power mechanism, and the transmission rotating rod is fixedly connected to the spiral guide vane so as to enable the power unit to drive the spiral guide vane to rotate.

[0020] Furthermore, the spray power mechanism further includes a liquid supply pipe;

[0021] A section of the transmission rotating rod located inside the liquid supply pipe is provided with a pressurizing portion;

[0022] The bottom of the spray power mechanism is also provided with a spray hole corresponding to the exhaust hole;

[0023] The pressurizing part is a spiral blade, and the pressurizing part is used to squeeze the liquid and discharge it into the guide cover through the spray hole.

[0024] Furthermore, a collecting frame is provided at the bottom of the deflector and on the inner wall of the tower body;

[0025] The collecting frame is in a circular ring shape and is used to collect attachments scraped off by the spiral guide vanes.

[0026] The beneficial effects of the present invention are as follows:

[0027] According to the utility model, the flue gas enters from the air inlet portion arranged at the bottom of the tower body, and then moves upward into the interior of the guide cover. The flue gas flows upward along the spiral pitch between the spiral guide vanes arranged inside the guide cover, and a spray power mechanism is arranged on the top of the guide cover to continuously spray the reaction liquid downward. After the reaction liquid is atomized, it can flow downward along the spiral pitch between the spiral guide vanes, and drip downward through the flow holes to fully react with the flue gas. When the equipment is in use, the power unit can drive the spiral guide vanes to rotate in the guide cover. When the spiral guide vanes rotate, they can be used to clean attachments on the inner wall of the guide cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1This is a structural sectional view of the utility model;

[0029] Figure 2 This is a sectional perspective view of the structure of the present invention;

[0030] Figure 3 This is a schematic diagram of the structure of the present invention from another perspective;

[0031] Figure 4 This is a cross-sectional bottom view of the structure of the present utility model;

[0032] Figure 5 This is a schematic diagram of the spray power mechanism structure of the utility model.

[0033] In the picture:

[0034] 1. Tower body; 11. Air inlet; 12. Liquid collecting part; 13. Exhaust part;

[0035] 2. air guide cover; 21. collection frame;

[0036] 3. Spray power mechanism; 31. Liquid supply pipe; 32. Pressurizing unit; 33. Spray hole;

[0037] 4. Spiral guide vane;

[0038] 5. Power unit; 51. Transmission belt; 52. Transmission rod;

[0039] 6. Demisting structure. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. In the absence of conflict, the embodiments in this application and the features in the embodiments can be combined with each other. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0041] See also Figure 1-5 The utility model discloses a sulfur dioxide absorption tower in flue gas, comprising:

[0042] The tower body 1 is provided with an air inlet portion 11, a liquid collecting portion 12 and an exhaust portion 13;

[0043] A guide cover 2 is conical in shape and arranged along the axis of the tower body 1;

[0044] A spray power mechanism 3, which is arranged at the top of the deflector 2;

[0045] A spiral guide vane 4 is fitted with the inner wall of the guide cover 2 and is in transmission connection with the spray power mechanism 3. A flow hole is formed on the spiral guide vane 4;

[0046] The spiral guide blade 4 rotates to scrape off the attachments on the inner wall of the guide cover 2, and its rotation is used to guide the gas to flow along the pitch and increase the gas-liquid contact and reaction time.

[0047] When the present application is in use, the flue gas enters from the air inlet 11 provided at the bottom of the tower body 1, and then enters upward into the interior of the deflector 2. The flue gas flows upward along the spiral pitch between the spiral guide vanes 4 provided inside the deflector 2, while the spray power mechanism 3 provided at the top of the deflector 2 continuously sprays the reaction liquid downward. After being atomized, the reaction liquid can flow downward along the spiral pitch between the spiral guide vanes 4, and drip downward through the flow holes to fully react with the flue gas.

[0048] Furthermore, in the present application, a power unit 5 is further provided on the side of the tower body 1 , and the power unit 5 is transmission-connected to the spray power mechanism 3 , and the power unit 5 includes a transmission belt 51 extending into the interior of the spray power mechanism 3 ;

[0049] A transmission rotating rod 52 is provided in the spray power mechanism 3 . The transmission rotating rod 52 is fixedly connected to the spiral guide vane 4 so as to enable the power unit 5 to drive the spiral guide vane 4 to rotate.

[0050] With the above-mentioned structural arrangement, when the device is in use, the power unit 5 can drive the spiral guide vane 4 to rotate in the deflector 2. When the spiral guide vane 4 rotates, it can be used to clean the attachments on the inner wall of the deflector 2.

[0051] Secondly, the rotation of the spiral guide vanes 4 can further drive the flue gas and reaction liquid in the spiral gap to circulate and mix, thereby improving the reaction efficiency.

[0052] It is easy to imagine that the top diameter of the guide cover 2 is smaller than the bottom diameter, and an exhaust hole is provided on the top of the guide cover 2. The spray power mechanism 3 corresponds to the exhaust hole and is used to spray the reaction liquid into the guide cover 2, so that the reaction liquid flows along the spiral guide plate 4 and falls from the flow hole to react with the gas in the pitch.

[0053] In the present application, a demisting structure 6 is also provided on the top of the deflector 2;

[0054] The demisting structure 6 includes multiple groups of barrier sheets, which are spirally distributed between the deflector 2 and the exhaust portion 13 .

[0055] In the above, the demisting structure 6 can be used to remove the reaction liquid contained in the flue gas, so that it is deposited on the surface of the demisting structure 6 and drips to the outside of the guide cover 2. It should be noted that a drainage hole is also provided at the connection between the guide cover 2 and the tower body 1, and the reaction liquid can flow into the liquid collecting part 12 through the drainage hole.

[0056] It should be supplemented that the spray power mechanism 3 further includes a liquid supply pipe 31;

[0057] The transmission rotating rod 52 is provided with a pressurizing portion 32 at a section located inside the liquid supply pipe 31;

[0058] The bottom of the spray power mechanism 3 is also provided with a spray hole 33 corresponding to the exhaust hole;

[0059] The pressurizing portion 32 is a spiral blade, and is used to squeeze the liquid and discharge it into the air guide cover 2 through the spray hole 33 .

[0060] Through the above-mentioned structural arrangement, when the power unit 5 drives the spiral guide vane 4 to rotate, the pressurizing unit 32 provided on the transmission rotating rod 52 can be used to further increase the pressure of the spray hole 33 and increase the flow rate of the reaction liquid. It should be added that the reaction liquid can be limestone slurry.

[0061] Finally, it should be added that a collection frame 21 is provided at the bottom of the deflector 2 and on the inner wall of the tower body 1;

[0062] The collecting frame 21 is annular and is used to collect the attachments scraped off by the spiral guide vanes 4 .

[0063] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0064] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features specified as "first" or "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between the various embodiments can be combined with each other, but this must be based on the fact that ordinary technicians in this field can implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0065] In addition, "plurality" means two or more.

[0066] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A sulfur dioxide absorption tower in flue gas, characterized in that: include: A tower body (1), wherein the tower body (1) is provided with an air inlet portion (11), a liquid collecting portion (12) and an air exhaust portion (13); A flow guide cover (2), the flow guide cover (2) is conical and arranged along the axial direction of the tower body (1); A spray power mechanism (3), wherein the spray power mechanism (3) is arranged at the top end of the deflector cover (2); A spiral guide plate (4), wherein the spiral guide plate (4) is in contact with the inner wall of the guide cover (2), the spiral guide plate (4) is in transmission connection with the spray power mechanism (3), and a flow hole is provided on the spiral guide plate (4); The spiral guide blade (4) is rotated to scrape off attachments on the inner wall of the guide cover (2), and its rotation is used to guide the gas to flow along the pitch and increase the gas-liquid contact and reaction time.

2. The sulfur dioxide absorption tower in flue gas according to claim 1, characterized in that: The top diameter of the deflector cover (2) is smaller than the bottom diameter; An exhaust hole is provided on the top of the deflector cover (2); The spray power mechanism (3) corresponds to the exhaust hole and is used to spray the reaction liquid into the guide cover (2), so that the reaction liquid flows along the spiral guide plate (4) and falls from the flow hole to react with the gas in the pitch.

3. The sulfur dioxide absorption tower in flue gas according to claim 1, characterized in that: A demisting structure (6) is provided on the top of the deflector cover (2); The demisting structure (6) comprises a plurality of groups of barrier sheets, and the plurality of groups of barrier sheets are distributed in a spiral shape between the deflector cover (2) and the exhaust portion (13).

4. The sulfur dioxide absorption tower in flue gas according to claim 2, characterized in that: A power unit (5) is also provided on the side of the tower body (1); The power unit (5) is in transmission connection with the spray power mechanism (3); The power unit (5) includes a transmission belt (51) extending into the interior of the spray power mechanism (3); A transmission rotating rod (52) is provided in the spray power mechanism (3), and the transmission rotating rod (52) is fixedly connected to the spiral guide vane (4) so as to enable the power unit (5) to drive the spiral guide vane (4) to rotate.

5. The sulfur dioxide absorption tower in flue gas according to claim 4, characterized in that: The spray power mechanism (3) further includes a liquid supply pipe (31); A section of the transmission rotating rod (52) located inside the liquid supply pipe (31) is provided with a pressurizing portion (32); The bottom of the spray power mechanism (3) is also provided with a spray hole (33) corresponding to the exhaust hole; The pressurizing portion (32) is a spiral blade, and the pressurizing portion (32) is used to squeeze the liquid and discharge it into the deflector cover (2) through the spray hole (33).

6. The sulfur dioxide absorption tower in flue gas according to claim 1, characterized in that: A collecting frame (21) is also provided at the bottom of the deflector (2) and on the inner wall of the tower body (1); The collecting frame (21) is in the shape of a circular ring and is used to collect attachments scraped off by the spiral guide vane (4).

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