Efficient flue gas desulfurization and denitrification integrated device

Abstract

The utility model relates to the technical field of flue gas treatment, in particular to an efficient flue gas desulfurization and denitrification integrated device which comprises a treatment tower main body, a flue gas input assembly, a treatment liquid circulating assembly for circulating treatment liquid and a spraying assembly are arranged in the treatment tower main body, the flue gas input assembly comprises a flue gas inlet pipe, and the tail end of the flue gas inlet pipe is connected with an end sleeve; a plurality of straight pipes are connected to the end sleeve, the spraying assembly comprises a spiral flue, a spiral band pipe is installed in the spiral flue, a plurality of spraying heads are installed on the spiral band pipe, and the output end of the treating fluid circulating assembly is communicated with the bottom end of the spiral band pipe. According to the efficient flue gas desulfurization and denitrification integrated device, by arranging the spiral flue and the spiral belt pipe with the spraying head, smoke spirally ascends along the spiral flue in the treatment tower main body, the flowing distance of the smoke in the tower is prolonged, the contact time of the smoke and atomization treatment liquid is prolonged, and the smoke is effectively prevented from entering the atomization treatment liquid. And sulfur, nitrate and other substances in the smoke have more sufficient time to react with the treating fluid.

Description

Technical Field

[0001] This utility model relates to the field of flue gas treatment technology, specifically to an integrated device for high-efficiency flue gas desulfurization and denitrification. Background Technology

[0002] Utility model patent CN221385900U discloses a purification device for desulfurization and denitrification of coal-fired gas. This device includes a purification tower body with an outlet at the top and an inlet smoke head fixed at the bottom. The bottom of the purification tower body is conical, and a bulb-shaped smoke-dispersing base is movably fitted at the center of the bottom. The upper end of the smoke-dispersing base is semi-circular, the lower part is inverted conical with an arc-shaped outer side, and multiple outlet holes perpendicular to the outer side of the smoke-dispersing base are formed on the base. This purification device, through the action of the smoke head, forces the coal-fired gas to enter the purification tower body through the smoke-dispersing base. The structure of the smoke-dispersing base allows the coal-fired gas to exit through the outlet holes of different directions and angles.

[0003] The purification equipment for desulfurization and denitrification of coal-fired flue gas described in the prior art relies mainly on the diffusion of the flue gas through the smoke matrix and the agitation of the baffle plates within the purification tower to bring the flue gas into contact with the treatment liquid. The flue gas rise path is relatively simple, and the treatment liquid is sprayed onto the packing layer through nozzles to form a water film. Under this method, the contact time between the flue gas and the treatment liquid is limited, which may result in some flue gas not being able to fully react with the treatment liquid for desulfurization and denitrification. In view of this, we propose a high-efficiency integrated flue gas desulfurization and denitrification device. Utility Model Content

[0004] The purpose of this invention is to provide an efficient integrated flue gas desulfurization and denitrification device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A high-efficiency flue gas desulfurization and denitrification integrated device includes a treatment tower body, a flue gas input component for introducing flue gas is provided at the bottom of the treatment tower body, a treatment liquid circulation component for circulating the treatment liquid inside the treatment tower body is provided on the outside of the treatment tower body, and a spray component for desulfurizing and denitrifying the flue gas is also provided inside the treatment tower body.

[0007] The flue gas input assembly includes a flue gas inlet pipe extending into the main body of the treatment tower. The end of the flue gas inlet pipe is connected to an end sleeve, which is immersed in the treatment liquid. Several straight pipes are connected to the outer periphery of the end sleeve, and several dispersion pipes are connected to the straight pipes. Several dispersion holes are opened on the outer surface of the dispersion pipes.

[0008] The spray assembly includes a spiral flue, a spiral tube installed inside the spiral flue, the spiral tube being arranged along the top wall of the spiral flue, and a plurality of spray heads being installed on the bottom surface of the spiral tube. The output end of the treatment liquid circulation assembly is connected to the bottom end of the spiral tube.

[0009] Preferably, an exhaust pipe is connected to the top of the main body of the treatment tower, and the exhaust pipe is used to discharge the treated fumes;

[0010] In this setup, the exhaust pipe provides a path for the treated fumes to exit, ensuring the integrity of the purification process.

[0011] Preferably, the bottom end of the treatment tower body is connected to a discharge port, which is used to discharge the treatment liquid inside the treatment tower body;

[0012] In this setup, the discharge port facilitates the periodic discharge and replacement of the treatment fluid, maintaining the stability of the internal treatment environment of the unit.

[0013] Preferably, the end sleeve is fixed to the bottom inner wall of the main body of the treatment tower, the straight pipes are arranged in a ring array on the end sleeve, and the dispersion tube is immersed in the treatment liquid;

[0014] In this setup, the straight pipes arranged in a ring array and the submerged dispersion pipes allow the flue gas to be evenly dispersed into the treatment liquid, increasing the gas-liquid contact area.

[0015] Preferably, the processing liquid circulation assembly includes a circulation pump, the input end of which is connected to the bottom end of the processing tower body via an inlet pipe, and the output end of which is connected to an outlet pipe, the end of which extends into the processing tower body.

[0016] In this setup, the circulating pump, along with the inlet and outlet pipes, enables the recycling of the treated liquid, ensuring the continuity of the desulfurization and denitrification reactions.

[0017] Preferably, the spiral tube has a flat, hollow strip structure, and a connecting pipe is provided at the bottom end of the spiral tube. The end of the liquid outlet tube extends into the main body of the treatment tower and is connected to the connecting pipe.

[0018] In this setup, the flat, hollow, ribbon-shaped spiral tube combined with the connecting tube can stably deliver the treatment liquid to the spray head, ensuring the uniformity of atomized spraying.

[0019] Preferably, the spiral flue is provided with fixed hoppers at both the top and bottom ends, the front end of the fixed hopper is connected to the opening of the spiral flue, and the rear edge of the fixed hopper is fixedly connected to the inner wall of the main body of the treatment tower.

[0020] Preferably, the fixed hopper has a connecting channel at its head end, and the opening of the spiral flue is connected to the head end of the fixed hopper through the connecting channel;

[0021] In these two settings, the fixed hopper and connecting channel fix the spiral flue and guide the flue gas in and out, ensuring the stability of the spiral path and the smooth flow of flue gas.

[0022] Compared with the prior art, the beneficial effects of this utility model are:

[0023] This high-efficiency flue gas desulfurization and denitrification integrated device uses a spiral flue installed in the spray assembly, with a spiral belt pipe equipped with spray heads inside the spiral flue. This causes the flue gas to rise spirally along the spiral flue in the main body of the treatment tower, extending the flow distance of the flue gas within the tower and increasing the contact time between the flue gas and the atomized treatment liquid. This allows sulfur, nitrates, and other substances in the flue gas more time to react with the treatment liquid, thereby improving the completeness of the desulfurization and denitrification reaction. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0025] Figure 2 This is a schematic diagram of the internal structure of the processing tower body in this utility model;

[0026] Figure 3 This is a schematic diagram of the flue gas input component in this utility model;

[0027] Figure 4 This is an enlarged schematic diagram of point A in this utility model;

[0028] Figure 5 This is a schematic diagram of the processing liquid circulation component in this utility model;

[0029] Figure 6 This is an exploded view of the spray assembly in this utility model;

[0030] Figure 7 This is a schematic diagram of the spiral flue structure in this utility model;

[0031] Figure 8 This is a schematic diagram of the spiral tube structure in this utility model;

[0032] Figure 9 This is a schematic diagram of the structure of the fixed bucket in this utility model;

[0033] The meanings of the labels in the diagram are as follows:

[0034] 100. Treatment tower body; 110. Discharge pipe; 120. Discharge port;

[0035] 200. Flue gas inlet assembly; 210. Flue gas inlet pipe; 220. End sleeve; 230. Straight pipe; 231. Dispersion pipe; 232. Dispersion hole;

[0036] 300. Processing fluid circulation assembly; 310. Circulation pump; 320. Inlet pipe; 330. Outlet pipe;

[0037] 400. Spray assembly; 410. Spiral flue; 420. Spiral belt pipe; 421. Spray head; 422. Connecting pipe; 430. Fixed hopper; 431. Connecting channel. Detailed Implementation

[0038] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. 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.

[0039] Please see Figures 1-9 The high-efficiency flue gas desulfurization and denitrification integrated device includes a treatment tower body 100, a flue gas input component 200 for introducing flue gas is provided at the bottom of the treatment tower body 100, a treatment liquid circulation component 300 for circulating the treatment liquid inside the treatment tower body 100 is provided on the outside of the treatment tower body 100, and a spray component 400 for desulfurizing and denitrifying the flue gas is also provided inside the treatment tower body 100.

[0040] like Figure 1 and Figure 2 As shown, in this invention, a discharge pipe 110 is connected to the top of the treatment tower body 100, which is used to discharge the treated fumes. A discharge port 120 is connected to the bottom of the treatment tower body 100, which is used to discharge the treated liquid inside the treatment tower body 100. The discharge port 120 is normally closed, allowing the treated liquid to accumulate in the treatment tower body 100 for recycling.

[0041] like Figures 2-4As shown, specifically, the flue gas input assembly 200 includes a flue gas inlet pipe 210 extending into the treatment tower body 100. An end sleeve 220 is connected to the end of the flue gas inlet pipe 210, and the end sleeve 220 is fixed to the bottom inner wall of the treatment tower body 100. The end sleeve 220 is immersed in the treatment liquid. Several straight pipes 230 are connected to the outer periphery of the end sleeve 220, arranged in a ring array on the end sleeve 220. Several dispersion pipes 231 are connected to the straight pipes 230, and the dispersion pipes 231 are immersed in the treatment liquid. Several dispersion holes 232 are formed on the outer surface of the dispersion pipes 231. The flue gas inlet pipe 210, in conjunction with the end sleeve 220, straight pipes 230, dispersion pipes 231, and dispersion holes 232, can disperse the flue gas into the treatment liquid, increasing the contact area between the flue gas and the treatment liquid, which is beneficial for the initial reaction.

[0042] like Figure 2 and Figure 5 As shown, the treatment liquid circulation assembly 300 further includes a circulation pump 310. The input end of the circulation pump 310 is connected to the bottom end of the treatment tower body 100 via an inlet pipe 320. The output end of the circulation pump 310 is connected to an outlet pipe 330, the end of which extends into the treatment tower body 100. The circulation pump 310, the inlet pipe 320, and the outlet pipe 330 constitute a circulation system, enabling the treatment liquid to be recycled, ensuring the concentration and activity of the treatment liquid, and reducing operating costs.

[0043] like Figure 2 and Figures 6-8 As shown, the spray assembly 400 further includes a spiral flue 410, within which a spiral tube 420 is installed. The spiral tube 420 is arranged along the top wall of the spiral flue 410, and several spray heads 421 are installed on the bottom surface of the spiral tube 420. The output end of the treatment liquid circulation assembly 300 is connected to the bottom end of the spiral tube 420. The spiral flue 410 extends the flow path of the flue gas, and the spiral tube 420, in conjunction with the spray heads 421, can atomize and spray the treatment liquid into the spiral flue 410, increasing the contact time and contact area between the flue gas and the atomized treatment liquid, thus promoting the desulfurization and denitrification reaction.

[0044] like Figure 8 As shown, it is worth noting that the spiral tube 420 has a flat, hollow strip structure. A connecting pipe 422 is provided at the bottom end of the spiral tube 420, and the end of the liquid outlet pipe 330 extends into the treatment tower body 100 and connects to the connecting pipe 422. The flat, hollow strip structure of the spiral tube 420, combined with the connecting pipe 422, facilitates the stable delivery of the treated liquid to each spray head 421, ensuring the uniformity of the spray.

[0045] like Figure 6 and Figure 9As shown, it is worth noting that fixed hoppers 430 are provided at both the top and bottom ends of the spiral flue 410. The front end of the fixed hopper 430 is connected to the opening of the spiral flue 410, and the rear edge of the fixed hopper 430 is fixedly connected to the inner wall of the treatment tower body 100. A connecting channel 431 is provided at the front end of the fixed hopper 430, and the opening of the spiral flue 410 and the front end of the fixed hopper 430 are connected through the connecting channel 431. The fixed hopper 430 and the connecting channel 431 serve to fix the spiral flue 410 and guide the flue gas in and out, ensuring the structural stability of the spiral flue 410 and the smooth flow of flue gas.

[0046] It is worth noting that the circulating pump 310 involved in this utility model is a conventional technology and will not be described in detail here.

[0047] In this embodiment, the high-efficiency flue gas desulfurization and denitrification integrated device is used as follows: First, the flue gas passes through the inlet pipe 210, and is dispersed into the treatment liquid at the bottom of the treatment tower body 100 via the end sleeve 220, straight pipe 230, dispersion pipe 231, and dispersion hole 232 for preliminary reaction. Then, the circulation pump 310 is started, which draws the treatment liquid from the bottom of the treatment tower body 100 through the inlet pipe 320 and transports it to the spiral belt pipe 420 through the outlet pipe 330. Next, the treatment liquid enters the spiral belt... After passing through pipe 420, the flue gas is atomized and sprayed into the spiral flue 410 via spray head 421, so that the flue gas will fully contact and react with the atomized treatment liquid as it spirals upward along the spiral flue 410. Finally, the treated flue gas is discharged through discharge pipe 110, and the treated liquid after reaction spirals downward along the spiral flue 410 and is discharged to the bottom of the treatment tower body 100 through the fixed hopper 430 located below, so that the treated liquid is stored in the treatment tower body 100 for reuse by the treatment liquid circulation component 300.

[0048] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A high-efficiency integrated flue gas desulfurization and denitrification device, comprising a treatment tower body (100), characterized in that: A flue gas input assembly (200) for introducing flue gas is provided at the bottom of the treatment tower body (100). A treatment liquid circulation assembly (300) for circulating the treatment liquid inside the treatment tower body (100) is provided on the outside of the treatment tower body (100). A spray assembly (400) for desulfurizing and denitrifying the smoke is also provided inside the treatment tower body (100). The flue gas input assembly (200) includes a flue gas inlet pipe (210) extending into the main body (100) of the treatment tower. The end of the flue gas inlet pipe (210) is connected to an end sleeve (220), which is immersed in the treatment liquid. Several straight pipes (230) are connected to the outer periphery of the end sleeve (220), and several dispersion pipes (231) are connected to the straight pipes (230). Several dispersion holes (232) are opened on the outer surface of the dispersion pipes (231). The spray assembly (400) includes a spiral flue (410) in a spiral shape, a spiral tube (420) installed inside the spiral flue (410), the spiral tube (420) is arranged along the top wall of the spiral flue (410), and a plurality of spray heads (421) are installed on the bottom surface of the spiral tube (420). The output end of the treatment liquid circulation assembly (300) is connected to the bottom end of the spiral tube (420).

2. The high-efficiency flue gas desulfurization and denitrification integrated device according to claim 1, characterized in that: The top of the treatment tower body (100) is connected to an exhaust pipe (110), which is used to discharge the treated smoke.

3. The high-efficiency flue gas desulfurization and denitrification integrated device according to claim 1, characterized in that: The bottom end of the treatment tower body (100) is connected to a discharge port (120), which is used to discharge the treatment liquid inside the treatment tower body (100).

4. The high-efficiency flue gas desulfurization and denitrification integrated device according to claim 1, characterized in that: The end sleeve (220) is fixed on the bottom inner wall of the treatment tower body (100), the straight pipe (230) is arranged in a ring array on the end sleeve (220), and the dispersion pipe (231) is immersed in the treatment liquid.

5. The high-efficiency flue gas desulfurization and denitrification integrated device according to claim 1, characterized in that: The processing liquid circulation assembly (300) includes a circulation pump (310). The input end of the circulation pump (310) is connected to the bottom end of the processing tower body (100) through an inlet pipe (320). The output end of the circulation pump (310) is connected to an outlet pipe (330), and the end of the outlet pipe (330) extends into the processing tower body (100).

6. The high-efficiency flue gas desulfurization and denitrification integrated device according to claim 5, characterized in that: The spiral tube (420) has a flat, hollow strip structure. The bottom end of the spiral tube (420) is provided with a connecting pipe (422). The end of the liquid outlet pipe (330) extends into the main body of the treatment tower (100) and is connected to the connecting pipe (422).

7. The high-efficiency flue gas desulfurization and denitrification integrated device according to claim 1, characterized in that: The spiral flue (410) is provided with fixed buckets (430) at both the top and bottom ends. The front end of the fixed bucket (430) is connected to the opening of the spiral flue (410), and the rear edge of the fixed bucket (430) is fixedly connected to the inner wall of the processing tower body (100).

8. The high-efficiency flue gas desulfurization and denitrification integrated device according to claim 7, characterized in that: The fixed hopper (430) has a connecting channel (431) at its head end, and the opening of the spiral flue (410) is connected to the head end of the fixed hopper (430) through the connecting channel (431).

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