Boiler tail gas desulfurization device

Abstract

The utility model relates to the technical field of waste gas desulfurization, and discloses a boiler tail gas desulfurization device which comprises a supporting plate, the top of the supporting plate is fixedly connected with a bearing frame, the top of the bearing frame is fixedly connected with a boiler tank, the top of the boiler tank is fixedly connected with a gas inlet pipe, and one end of the gas inlet pipe is fixedly connected with a desulfurization barrel. A supporting frame is fixedly connected to the bottom of the desulfurization barrel, the bottom of the supporting frame is fixedly connected to the top of the supporting plate, and a cutting assembly is arranged in the desulfurization barrel; the cutting assembly comprises a hole disc; and the hole disc is fixedly connected to the interior of the desulfurization barrel. According to the waste gas desulfurization device disclosed by the utility model, waste gas released by the boiler tank is conveyed into the desulfurization barrel through the gas inlet pipe, and is cut through the circular hole array formed in the hole disc, so that the effect of fully desulfurizing the waste gas is achieved, and the problem that clustered gas is difficult to fully desulfurize when the waste gas is desulfurized in the desulfurization barrel is solved; the desulfurization efficiency of the device is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to waste gas desulfurization technical field especially relates to boiler tail gas desulfurization device. BACKGROUND

[0002] Boiler tail gas desulfurization device is the key equipment of industrial flue gas purification, mainly used for removing sulfur dioxide discharged by coal-fired, oil-fired or biomass boiler to reduce atmospheric pollution and acid rain formation, with environmental protection regulations increasingly strict, traditional desulfurization technology such as limestone-gypsum method, ammonia method has been widely used in electric power, metallurgy and chemical industry, however, due to the complex composition of boiler exhaust gas, the flow fluctuation is big, the conventional desulfurization device still has the problem of insufficient efficiency when treating high concentration or agglomerated exhaust gas, therefore, it is needed to optimize the gas-liquid contact mode to improve the desulfurization reaction completeness, at the same time, the wastewater produced in the desulfurization process contains suspended solids, heavy metals and other pollutants, direct discharge will pollute the environment, therefore, efficient wastewater filtration and reuse technology also become the research emphasis.

[0003] At present, wet desulfurization device mostly adopts spray tower structure, exhaust gas enters from the bottom and countercurrently contacts with the limestone slurry sprayed at the top, absorbs sulfur dioxide through gas-liquid mass transfer reaction, part of the improved technology adopts cyclone plate, filler layer or bubble column to enhance turbulent mixing to improve desulfurization efficiency.

[0004] When the conventional desulfurization device treats exhaust gas, due to the exhaust gas is easy to form agglomeration or local airflow short circuit in the tower, part of the gas cannot fully contact the desulfurization slurry, which reduces the removal efficiency of sulfur dioxide, especially in the case of high load or complex exhaust gas composition, the problem of uneven gas-liquid mixing is more prominent, which makes the desulfurization reaction incomplete, finally affects the problem of non-compliance of emission, therefore, the boiler tail gas desulfurization device is proposed to solve the above problems. UTILITY MODEL CONTENTS

[0005] In order to make up for the above shortcomings, the utility model provides a boiler tail gas desulfurization device, which aims at improving the problem that it is difficult to fully desulfurize the agglomerated gas when the exhaust gas is desulfurized in the desulfurization barrel in the prior art.

[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme: a boiler tail gas desulfurization device, comprising a supporting plate, the top of the supporting plate is fixedly connected with a bearing frame, the top of the bearing frame is fixedly connected with a boiler tank, the top of the boiler tank is fixedly connected with an air inlet pipe, one end of the air inlet pipe is fixedly connected with a desulfurization barrel, the bottom of the desulfurization barrel is fixedly connected with a supporting frame, the bottom of the supporting frame is fixedly connected to the top of the supporting plate, and a dividing assembly is arranged in the desulfurization barrel.

[0007] The split component includes a hole disc fixedly connected inside the desulfurization barrel, the bottom of the desulfurization barrel is fixedly connected with a limiting ring, the hole disc is attached to the limiting ring, the top of the desulfurization barrel is provided with a desulfurization component, the bottom of the desulfurization barrel is fixedly connected with a drain pipe, the outer wall of the desulfurization barrel is fixedly connected with an exhaust pipe, the top of the supporting plate is fixedly connected with a limiting rod, the top of the limiting rod is fixedly connected with a water tank, and the water tank is internally provided with a purification component.

[0008] As a further description of the above technical solution: the desulfurization component includes a limestone tank fixedly connected to the top of the desulfurization barrel.

[0009] As a further description of the above technical solution: the bottom of the limestone tank is fixedly connected with a spraying disc, and the bottom of the spraying disc is provided with a spray head.

[0010] As a further description of the above technical solution: the purification component includes a purification frame fixedly connected to the inside of the water tank, and the inside of the purification frame is provided with a drain groove.

[0011] As a further description of the above technical solution: the purification frame is internally provided with a filtering component, and the filtering component includes a limiting frame and a filter screen.

[0012] As a further description of the above technical solution: the filter screen is arranged inside the limiting frame, and the inside of the limiting frame is threadedly connected with a threaded column.

[0013] As a further description of the above technical solution: the threaded column is threadedly connected to the inside of the purification frame, and the top of the water tank is slidingly connected with a sliding cover.

[0014] The utility model has the advantages of the following:

[0015] 1. In the utility model, the waste gas released by the boiler tank is transported to the inside of the desulfurization barrel through the air inlet pipe, and when the waste gas floats upward in the desulfurization barrel, it is cut by the circular hole array arranged in the hole disc, and then the limestone slurry is released by the limestone tank and the spraying disc to spray the gas, thereby achieving the effect of more fully desulfurizing the waste gas, solving the problem that it is difficult to fully desulfurize the agglomerated gas when the waste gas is desulfurized in the desulfurization barrel, and improving the desulfurization efficiency of the device.

[0016] 2. In the utility model, the wastewater generated after desulfurization in the desulfurization barrel is discharged through the drain pipe, and then the wastewater is first filtered by the filter screen, and then purified by the purification frame, and then discharged into the water tank through the drain groove, thereby achieving the effect of filtering and purifying the wastewater generated by desulfurization, solving the problem that the discharged wastewater is difficult to treat and cannot be reused, and improving the environmental friendliness of the device. Attached Figure Description

[0017] Figure 1 This is a three-dimensional schematic diagram of the boiler exhaust gas desulfurization device proposed in this utility model;

[0018] Figure 2 This is a cross-sectional structural diagram of the desulfurization tank of the boiler exhaust gas desulfurization device proposed in this utility model.

[0019] Figure 3 This is a schematic diagram of the drain pipe structure of the boiler exhaust gas desulfurization device proposed in this utility model.

[0020] Figure 4 for Figure 3 Enlarged view of point A in the middle.

[0021] Legend:

[0022] 1. Support plate; 2. Load-bearing frame; 3. Support frame; 4. Boiler tank; 5. Air inlet pipe; 6. Desulfurization tank; 7. Limestone box; 8. Exhaust pipe; 9. Spray tray; 10. Spray head; 11. Perforated plate; 12. Limiting ring; 13. Limiting rod; 14. Water tank; 15. Sliding cover; 16. Drain pipe; 17. Purification frame; 18. Drainage trough; 19. Limiting frame; 20. Threaded column; 21. Filter screen. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Reference Figure 1 - Figure 4 An embodiment of this utility model provides a boiler exhaust gas desulfurization device, including a support plate 1, which provides basic support for the entire device and maintains stability. A load-bearing frame 2 is fixedly connected to the top of the support plate 1. The load-bearing frame 2 is used to distribute the weight load of the boiler tank 4 and ensure the structure is firm. The boiler tank 4 is fixedly connected to the top of the load-bearing frame 2. The boiler tank 4 serves as a container for generating and collecting exhaust gas. An air inlet pipe 5 is fixedly connected to the top of the boiler tank 4. The air inlet pipe 5 guides the exhaust gas generated by the boiler tank 4 into the desulfurization tank 6 for purification. One end of the air inlet pipe 5 is fixedly connected to the desulfurization tank 6. The desulfurization tank 6 is the main site for the exhaust gas desulfurization reaction. A support frame 3 is fixedly connected to the bottom of the desulfurization tank 6. The support frame 3 is used to reinforce the connection structure between the desulfurization tank 6 and the support plate 1. The bottom of the support frame 3 is fixedly connected to the top of the support plate 1. A partition component is provided inside the desulfurization tank 6.

[0025] The split assembly includes a hole disc 11 for dispersing and cutting the waste gas entering the desulfurization barrel 6 to improve the gas-liquid contact efficiency, the hole disc 11 is fixedly connected inside the desulfurization barrel 6, the bottom of the desulfurization barrel 6 is fixedly connected with a limiting ring 12, the limiting ring 12 is used to fix the position of the hole disc 11 and prevent it from moving, the hole disc 11 is in close contact with the limiting ring 12, the top of the desulfurization barrel 6 is provided with a desulfurization assembly, the desulfurization assembly is used to spray limestone slurry to the waste gas to complete the desulfurization reaction, the bottom of the desulfurization barrel 6 is fixedly connected with a drain pipe 16, the drain pipe 16 is used to discharge wastewater generated during the desulfurization process, the outer wall of the desulfurization barrel 6 is fixedly connected with an exhaust pipe 8, the exhaust pipe 8 is used to discharge the purified gas, the top of the support plate 1 is fixedly connected with a limiting rod 13, the limiting rod 13 is used to fix the position of the water tank 14 and keep its stability, the top of the limiting rod 13 is fixedly connected with the water tank 14, the water tank 14 is used to collect and store the purified wastewater, the inside of the water tank 14 is provided with a purification assembly, the purification assembly is used to further filter the wastewater for recycling.

[0026] Referring to Figure 1 - Figure 4 The desulfurization assembly includes a limestone tank 7 for storing limestone slurry and providing raw materials required for desulfurization reaction, the bottom of the limestone tank 7 is fixedly connected to the top of the desulfurization barrel 6, the bottom of the limestone tank 7 is fixedly connected with a spraying disc 9, the spraying disc 9 is used to uniformly distribute the spraying range of limestone slurry, the bottom of the spraying disc 9 is provided with a spray head 10, the spray head 10 is used to atomize and spray out the limestone slurry to enhance the contact effect with the waste gas, the purification assembly includes a purification frame 17 for accommodating the wastewater filtering device and providing structural support, the outer wall of the purification frame 17 is fixedly connected inside the water tank 14, the inside of the purification frame 17 is provided with a drain groove 18, the drain groove 18 is used to guide the filtered water flow to the bottom of the water tank 14, the inside of the purification frame 17 is provided with a filtering assembly, the filtering assembly includes a limiting frame 19 and a filter screen 21, the limiting frame 19 is used to fix the position of the filter screen 21 and keep its stability, the filter screen 21 is arranged inside the limiting frame 19, the filter screen 21 is used to intercept solid impurities in the wastewater to achieve primary filtration, a threaded column 20 is threadedly connected inside the limiting frame 19, the threaded column 20 is used to adjust and fix the installation height of the limiting frame 19, the outer wall of the threaded column 20 is threadedly connected inside the purification frame 17, a sliding cover 15 is slidingly connected to the top of the water tank 14, the sliding cover 15 is used to close the opening at the top of the water tank 14 and prevent foreign matter from entering, while facilitating maintenance personnel to open for equipment maintenance and cleaning.

[0027] Working principle: when using desulfurization device in the boiler exhaust gas desulfurization, when the boiler tank 4 inside the exhaust gas is generated, through the air inlet pipe 5 to the inside of desulfurization barrel 6 flow, then the exhaust gas in the desulfurization barrel 6 will move up, when the exhaust gas moves up in the process will be cut by the hole plate 11 to the exhaust gas, the exhaust gas is cut continue to float up, at the same time, through the spray plate 9 and the spray head 10 will be limestone slurry in the limestone box 7 inside the spray in the desulfurization barrel 6, and exhaust gas is in contact with exhaust gas, desulfurization, then through the exhaust pipe 8 will be desulfurized gas release, so as to achieve the purpose of more efficient exhaust gas desulfurization, in the process of gas desulfurization will produce waste water, waste water through the drain pipe 16 is discharged to the filter screen 21 inside, through the filter screen 21 to waste water preliminary filtration, the impurities in the waste water are intercepted, then the filtered waste water will continue to flow through the filter screen 21 to the purification frame 17 inside, then through the purification frame 17 to waste water purification, the purified waste water through the drain tank 18 flow to the water tank 14 inside storage, so as to achieve the purpose of waste water filtration purification, and then make the waste water can be secondary utilization.

[0028] Finally, it should be noted that: the above only for the preferred embodiments of the utility model, and does not limit the utility model, although the utility model is described in detail with reference to the foregoing embodiments, for the person skilled in the art, it still can modify the technical scheme recorded in the foregoing each embodiment, or equivalent replacement to part of technical features, any modification, equivalent replacement, improvement etc. made within the spirit and principles of the utility model, should be included in the protection scope of the utility model.

Claims

1. A boiler tail gas desulphurization unit comprising a support plate (1), characterized in that: The supporting plate (1) top fixedly connected with the bearing frame (2), the bearing frame (2) top fixedly connected with the boiler tank (4), the boiler tank (4) top fixedly connected with the air inlet pipe (5), the air inlet pipe (5) one end fixedly connected with the desulfurization barrel (6), the desulfurization barrel (6) bottom fixedly connected with the support frame (3), the support frame (3) bottom fixedly connected in the supporting plate (1) top, the desulfurization barrel (6) is provided with split component inside; The split component includes a hole disc (11), the hole disc (11) is fixedly connected in the desulfurization barrel (6), the desulfurization barrel (6) bottom fixedly connected with the limiting ring (12), the hole disc (11) and the limiting ring (12) are fitted, the desulfurization barrel (6) top is provided with desulfurization component, the desulfurization barrel (6) bottom fixedly connected with the drain pipe (16), the desulfurization barrel (6) outer wall fixedly connected with the exhaust pipe (8), the supporting plate (1) top fixedly connected with the limiting rod (13), the limiting rod (13) top fixedly connected with the water tank (14), the water tank (14) is provided with purification component inside.

2. The boiler tail gas desulphurization device as claimed in claim 1, wherein: The desulfurization component includes a limestone tank (7), the limestone tank (7) bottom is fixedly connected in the desulfurization barrel (6) top.

3. A boiler flue gas desulphurization device according to claim 2, characterized in that: The limestone tank (7) bottom fixedly connected with the spray tray (9), the spray tray (9) bottom is provided with the spray head (10).

4. The boiler tail gas desulphurization device as claimed in claim 1, wherein: The purification component includes a purification frame (17), the purification frame (17) outer wall is fixedly connected in the water tank (14), the purification frame (17) is provided with drain groove (18) inside.

5. A boiler flue gas desulphurization device according to claim 4, characterized in that: The purification frame (17) is provided with filter assembly inside, the filter assembly includes a limiting frame (19) and a filter screen (21).

6. A boiler flue gas desulphurization device according to claim 5, characterized in that: The filter screen (21) is arranged in the limiting frame (19), the limiting frame (19) is screwed with a threaded column (20) inside.

7. A boiler flue gas desulphurization device according to claim 6, characterized in that: The threaded column (20) outer wall is screwed in the purification frame (17) inside, the water tank (14) top is slidably connected with the sliding cover (15).

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