A desulfurization tower of inclined membrane plate type

Abstract

The utility model provides a kind of oblique membrane plate's desulfurization tower, including desulfurization tower body, circulating spray mechanism, scale removal spray mechanism and baffle;Flue gas enters desulfurization tower body inside by smoke inlet pipe, and enters into desulfurization passage, and contact with the desulfurization lye that circulating spray mechanism sprays realizes desulfurization, and the contact path and contact time of flue gas and desulfurization lye are increased in the desulfurization passage of baffle composition, force flue gas to generate turbulent flow, improve gas-liquid mass transfer efficiency, to improve desulfurization efficiency, and by the spray head of last setting direct alignment possibly formed in baffle below " dry area ", carry out supplementary spray, help to eliminate desulfurization blind area, improve overall desulfurization uniformity and efficiency, by switching three-way valve, spray head can also spray scale removal agent on baffle, can effectively flush scale face on baffle, avoid the influence of airflow circulation of brushing baffle scale.

Description

Technical Field

[0001] This utility model relates to the field of desulfurization towers, and in particular to a desulfurization tower of inclined film plate type. Background Technology

[0002] Existing wet desulfurization towers are mostly based on empty tower spraying, packed towers, or cyclone plate towers. Although empty tower spraying has a simple structure, the gas-liquid contact time is short, limiting the desulfurization efficiency; although packed towers can increase the mass transfer area, they are prone to clogging under dusty flue gas conditions, requiring frequent maintenance; cyclone plate towers are sensitive to airflow distribution and have a large pressure drop. Therefore, there is an urgent need to provide a desulfurization tower with high desulfurization efficiency and less clogging. Utility Model Content

[0003] (a) Technical problems to be solved To address the aforementioned problems in the prior art, this utility model provides a desulfurization tower with an inclined film plate.

[0004] (II) Technical Solution To achieve the above objectives, the main technical solutions adopted by this utility model include: A desulfurization tower with inclined film plate includes a desulfurization tower body, a circulating spray mechanism, a descaling spray mechanism, and inclined plates; A flue gas inlet pipe is provided on one side of the bottom of the desulfurization tower body, and a flue gas outlet pipe is provided on the top of the desulfurization tower body; Multiple inclined plates are provided and are staggered on both sides of the inner wall of the desulfurization tower body, forming a continuous and bent desulfurization channel inside the desulfurization tower body. The circulating spraying mechanism is installed inside the desulfurization tower to transport the desulfurization alkaline solution at the bottom of the desulfurization tower to the upper part of the desulfurization tower, thereby achieving circulating spraying. The descaling spray mechanism includes a main spray pipe, spray branch pipes, spray heads, a pump, a three-way valve, a first inlet pipe, a second inlet pipe, and a descaling agent storage tank. The pump inlet is connected to the outlet port of the three-way valve via a pipeline. The two inlet ports of the three-way valve are respectively connected to one side of the bottom of the desulfurization tower and the descaling agent storage tank via a first inlet pipe and a second inlet pipe. The outlet of the pump is connected to the main spray pipe; The main spray pipe is connected to multiple spray branch pipes, and spray heads are installed on the spray branch pipes. The spray heads are installed at the angle between the inclined plate and the inner wall of the desulfurization tower.

[0005] Preferably, the spray head is a wide-angle fan-shaped nozzle, and the spray angle of the wide-angle fan-shaped nozzle is in the range of 120° to 150°.

[0006] Preferably, a normally open pulse valve is installed on the spray branch pipe.

[0007] Preferably, it also includes a monitoring mechanism, which includes a differential pressure sensor and a PLC controller. The differential pressure sensor is installed at the inlet and outlet of the desulfurization channel, and the differential pressure sensor, the three-way valve and the pump are all electrically connected to the PLC controller.

[0008] Preferably, the circulating spray mechanism includes a circulating pump, an annular pipe, and spray nozzles. The inlet of the circulating pump is connected to one side of the bottom of the desulfurization tower body through an inlet pipe, and the outlet of the circulating pump is connected to the annular pipe through an outlet pipe. The annular pipe is located inside the upper part of the desulfurization tower body, and multiple spray nozzles are provided at the bottom of the annular pipe.

[0009] (III) Beneficial Effects The beneficial effects of this utility model are as follows: Using the above technical solution, flue gas enters the desulfurization tower through the inlet pipe and then into the desulfurization channel, where it comes into contact with the desulfurization alkaline solution sprayed by the circulating spray mechanism to achieve desulfurization. The desulfurization channel composed of inclined plates increases the contact path and contact time between the flue gas and the desulfurization alkaline solution, forcing the flue gas to generate turbulence, improving gas-liquid mass transfer efficiency, and thus enhancing desulfurization efficiency. Furthermore, the spray nozzles installed at the rear directly target any "dry areas" that may form below the inclined plates for supplementary spraying, helping to eliminate desulfurization blind spots and improve overall desulfurization uniformity and efficiency. By switching the three-way valve, the spray nozzles can also spray descaling agent onto the inclined plates, effectively flushing the scale buildup on the inclined plates and preventing scale buildup from affecting airflow. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of a desulfurization tower with an inclined membrane plate.

[0011] [Explanation of Labels in the Attached Image] 1. Desulfurization tower body; 2. Smoke outlet pipe; 3. Inclined plate; 4. Differential pressure sensor; 5. Normally open pulse valve; 6. Sprinkler main pipe; 7. Sprinkler branch pipes; 8. Pumps; 9. Three-way valve; 10. Descaling agent storage tank; 11. Smoke inlet pipe; 12. Circulating pump; 13. Sprinkler head; 14. Circular pipe; 15. Spray nozzle. Detailed Implementation

[0012] To better explain and facilitate understanding of this utility model, the present utility model will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0013] Please refer to Figure 1 This utility model provides a desulfurization tower of inclined film plate type, including desulfurization tower body 1, circulating spray mechanism, descaling spray mechanism and inclined plate 3; A flue gas inlet pipe 11 is provided on one side of the bottom of the desulfurization tower body 1, and a flue gas outlet pipe 2 is provided on the top of the desulfurization tower body 1. Multiple inclined plates 3 are provided and are staggered on both sides of the inner wall of the desulfurization tower body 1. Multiple inclined plates 3 form a continuous and bent desulfurization channel inside the desulfurization tower body 1. The circulating spraying mechanism is installed inside the desulfurization tower 1, which transports the desulfurization alkaline solution at the bottom of the desulfurization tower 1 to the upper part of the desulfurization tower 1 to achieve circulating spraying; The descaling spray mechanism includes a main spray pipe 6, a branch spray pipe 7, a spray head 13, a pump 8, a three-way valve 9, a first liquid inlet pipe, a second liquid inlet pipe, and a descaling agent storage tank 10. The inlet of the pump 8 is connected to the outlet of the three-way valve 9 through a pipeline. The two inlet ports of the three-way valve 9 are connected to one side of the bottom of the desulfurization tower body 1 and the descaling agent storage tank 10 through the first inlet pipe and the second inlet pipe, respectively. The outlet of pump 8 is connected to the main spray pipe 6; Multiple spray branch pipes 7 are connected to the main spray pipe 6. Spray heads 13 are installed on the spray branch pipes 7, and the spray heads 13 are installed at the angle between the inclined plate 3 and the inner wall of the desulfurization tower body 1. During operation, flue gas enters the desulfurization tower body 1 through the flue gas inlet pipe 11 and enters the desulfurization channel. It comes into contact with the desulfurization alkaline solution sprayed by the circulating spray mechanism to achieve desulfurization. The desulfurization channel composed of inclined plates 3 increases the contact path and contact time between flue gas and desulfurization alkaline solution, forcing the flue gas to generate turbulence and improving the gas-liquid mass transfer efficiency, thereby improving the desulfurization efficiency. In addition, the spray head 13 set at the rear directly targets the "dry area" that may be formed below the inclined plate 3 for supplementary spraying, which helps to eliminate desulfurization blind spots and improve the overall desulfurization uniformity and efficiency. By switching the three-way valve 9, the spray head 13 can also spray descaling agent on the inclined plate 3, which can effectively flush the scale surface on the inclined plate 3 and avoid the scale on the inclined plate 3 affecting the airflow.

[0014] In this embodiment, the spray head 13 adopts a wide-angle fan-shaped nozzle, and the spray angle range of the wide-angle fan-shaped nozzle is 120° to 150°. The wide spray angle range of the wide-angle fan-shaped nozzle is conducive to the contact between flue gas and desulfurization alkaline solution, and at the same time, it can make the sprayed desulfurization alkaline solution fully contact the surface of the inclined plate 3.

[0015] In this embodiment, a normally open pulse valve 5 is installed on the spray branch pipe 7. When the descaling agent is delivered, the normally open pulse valve 5 is opened, which can form a "water hammer" effect, increase the flushing shear force of the spray head 13, and thus improve the descaling effect.

[0016] In this embodiment, a monitoring mechanism is also included. The monitoring mechanism includes a differential pressure sensor 4 and a PLC controller. The differential pressure sensor 4 is installed at the inlet and outlet of the desulfurization channel. The differential pressure sensor 4, the three-way valve 9, and the pump 8 are all electrically connected to the PLC controller. During use, the pressure difference between the inlet and outlet of the desulfurization channel is monitored by two differential pressure sensors 4. When the difference between the pressure difference values ​​detected by the two differential pressure sensors 4 increases significantly, it indicates that the scale on the inclined plate 3 is serious. The PLC controller drives the three-way valve 9 to switch the delivery pipeline, and the pump 8 sprays the descaling agent onto the inclined plate 3 to achieve automated descaling.

[0017] In this embodiment, the circulating spray mechanism includes a circulating pump 12, an annular pipe 14, and spray nozzles 15. The inlet of the circulating pump 12 is connected to one side of the bottom of the desulfurization tower body 1 through an inlet pipe, and the outlet of the circulating pump 12 is connected to the annular pipe 14 through an outlet pipe. The annular pipe 14 is located inside the upper part of the desulfurization tower body 1, and multiple spray nozzles 15 are provided at the bottom of the annular pipe 14.

[0018] The working principle of this utility model is as follows: Flue gas enters the desulfurization tower body 1 through the flue gas inlet pipe 11 and enters the desulfurization channel, where it comes into contact with the desulfurization alkaline solution sprayed by the circulating spray mechanism to achieve desulfurization. The desulfurization channel composed of inclined plates 3 increases the contact path and contact time between flue gas and desulfurization alkaline solution, forcing the flue gas to generate turbulence, improving the gas-liquid mass transfer efficiency, thereby improving the desulfurization efficiency. In addition, the spray head 13 set behind it directly targets the "dry area" that may be formed below the inclined plate 3 for supplementary spraying, which helps to eliminate desulfurization blind spots and improve the overall desulfurization uniformity and efficiency. By switching the three-way valve 9, the spray head 13 can also spray descaling agent onto the inclined plate 3, which can effectively flush the scale surface on the inclined plate 3 and avoid the scale on the inclined plate 3 affecting the airflow.

[0019] The circuits, electronic components, and modules involved are all existing technologies, which can be fully implemented by those skilled in the art, and need not be elaborated upon. The content protected by this utility model does not involve any improvement to the software and methods.

[0020] The above are merely embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent modifications made based on the content of this utility model specification and drawings, or direct or indirect applications in related technical fields, are similarly included within the patent protection scope of this utility model.

[0021] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A desulfurization tower of inclined film plate type, characterized in that, This includes the desulfurization tower body, the circulating spray mechanism, the descaling spray mechanism, and the inclined plate; A flue gas inlet pipe is provided on one side of the bottom of the desulfurization tower body, and a flue gas outlet pipe is provided on the top of the desulfurization tower body; Multiple inclined plates are provided and are staggered on both sides of the inner wall of the desulfurization tower body, forming a continuous and bent desulfurization channel inside the desulfurization tower body. The circulating spraying mechanism is installed inside the desulfurization tower to transport the desulfurization alkaline solution at the bottom of the desulfurization tower to the upper part of the desulfurization tower, thereby achieving circulating spraying. The descaling spray mechanism includes a main spray pipe, spray branch pipes, spray heads, a pump, a three-way valve, a first inlet pipe, a second inlet pipe, and a descaling agent storage tank. The pump inlet is connected to the outlet port of the three-way valve via a pipeline. The two inlet ports of the three-way valve are respectively connected to one side of the bottom of the desulfurization tower and the descaling agent storage tank via a first inlet pipe and a second inlet pipe. The outlet of the pump is connected to the main spray pipe; The main spray pipe is connected to multiple spray branch pipes, and spray heads are installed on the spray branch pipes. The spray heads are installed at the angle between the inclined plate and the inner wall of the desulfurization tower.

2. The inclined film plate type desulfurization tower according to claim 1, characterized in that, The spray head uses a wide-angle fan-shaped nozzle, and the spray angle of the wide-angle fan-shaped nozzle is in the range of 120° to 150°.

3. The inclined film plate type desulfurization tower according to claim 1, characterized in that, A normally open pulse valve is installed on the spray branch pipe.

4. The inclined film plate type desulfurization tower according to claim 1, characterized in that, It also includes a monitoring mechanism, which includes a differential pressure sensor and a PLC controller. The differential pressure sensor is installed at the inlet and outlet of the desulfurization channel, and the differential pressure sensor, the three-way valve and the pump are all electrically connected to the PLC controller.

5. A desulfurization tower of inclined film plate type according to claim 1, characterized in that, The circulating spray mechanism includes a circulating pump, an annular pipe, and spray nozzles. The inlet of the circulating pump is connected to one side of the bottom of the desulfurization tower body through an inlet pipe, and the outlet of the circulating pump is connected to the annular pipe through an outlet pipe. The annular pipe is located inside the desulfurization tower body at the top, and multiple spray nozzles are provided at the bottom of the annular pipe.

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