Polyaluminum chloride spray drying tail gas treatment tower

Abstract

The utility model relates to the technical field of chemical environmental protection equipment, and disclose a kind of polyaluminium chloride spray drying tail gas treatment tower, including tower body, the inside installation of tower body is filled with layer, the top of tower body is fixedly installed with detachable tower cylinder by bolt, the inner wall of detachable tower cylinder bottom is fixedly provided with ring, the top of ring is equipped with the flow guide and spray of tail gas Guiding and spraying component, the side of tower body is equipped with the pumping assembly of guiding and spraying component conveying spray liquid;Spray liquid can reach guiding and spraying component by pumping assembly conveying spray liquid, guiding and spraying component can flow guide to tail gas, extend the delivery path of tail gas, and can increase the spray area of tail gas, while can increase the gas-liquid mixing time, can prevent gas from directly escaping without effective collision with spray liquid, improve the processing efficiency of tail gas.

Description

Technical Field

[0001] This utility model relates to the field of chemical environmental protection equipment technology, specifically a polyaluminum chloride spray drying tail gas treatment tower. Background Technology

[0002] Spray drying is a key process in the production of polyaluminum chloride (PAC). Its function is to instantly dry liquid PAC solution into powder or microsphere solid products through a high-temperature airflow. This process can significantly improve product stability, facilitate transportation and storage, and improve product purity. In addition, spray drying can flexibly control the product particle size and basicity to meet the needs of different water treatment scenarios (such as industrial wastewater or drinking water purification). It is the core process for producing high-quality solid PAC. During the production of polyaluminum chloride, the spray drying process generates high-temperature exhaust gas containing dust, acidic gases, and water vapor.

[0003] Existing exhaust gas treatment towers generally suffer from insufficient gas-liquid contact. When exhaust gas enters the treatment tower, the flow rate is too fast or the flow direction is turbulent, causing some gas to escape directly without effectively colliding with the spray liquid. Insufficient tower height or lack of packing layer results in too short gas-liquid mixing time, and acidic gases do not have enough time to be fully absorbed by the alkaline solution, leading to a decrease in treatment efficiency.

[0004] Therefore, a tail gas treatment tower that can extend the gas-liquid mixing time and improve the treatment efficiency is needed. Utility Model Content

[0005] To address the shortcomings of existing technologies, this invention provides a polyaluminum chloride spray drying tail gas treatment tower, which has the advantages of extending gas-liquid mixing time and improving treatment efficiency, thus solving the problems mentioned in the background technology.

[0006] This utility model provides the following technical solution: a polyaluminum chloride spray drying tail gas treatment tower, including a tower body, a packing layer installed inside the tower body, a detachable tower cylinder fixedly installed at the top of the tower body by bolts, a support ring fixedly provided on the inner wall of the bottom of the detachable tower cylinder, a flow guiding and spraying assembly for guiding and spraying the tail gas at the top of the support ring, a pumping assembly for pumping spray liquid to the flow guiding and spraying assembly on one side of the tower body, a top cap fixedly installed at the top of the tower body by bolts, and an exhaust pipe fixedly provided in the middle of the top of the top of the top cap; The flow-guiding spray assembly includes a riser, to which several distribution pipes are fixedly connected. Spray heads are fixedly connected to the bottom of each distribution pipe. Several flow guide plates are fixedly provided on the surface of the riser. Support rods are fixedly connected to each flow guide plate. A pipe clamp for limiting the position of the distribution pipes is fixedly installed at the bottom of each flow guide plate. Rubber strips are fixedly provided on the surface of each flow guide plate. An upward inlet with staggered positions is provided on one side of each flow guide plate.

[0007] As a preferred embodiment of this utility model, the top end of the support ring is fixedly connected to the bottom end of one of the guide plates by screws, and a notch corresponding to the rising port is provided on one side of the support ring.

[0008] As a preferred technical solution of this utility model, both ends of the detachable tower are fixedly provided with mounting rings, and the top end of the tower body and the bottom end of the top cap are fixedly provided with washers. The mounting rings are fixedly connected to the washers by bolts, and a sealing gasket is provided between the washers and the mounting rings.

[0009] As a preferred embodiment of this utility model, the pumping assembly includes a casing and a conduit. The casing is fixedly connected to the bottom of the tower body. A casing cover is fixedly installed on one side of the casing by screws. A circulating pump is fixedly installed inside the casing. An input pipe is fixedly provided at the input end of the circulating pump. The input end of the input pipe is located inside the tower body. An output pipe is fixedly connected to the output end of the circulating pump. A connector is provided at the output end of the output pipe. A conduit is connected to the output pipe through the connector. A connector is provided at the output end of the conduit to connect to the riser pipe.

[0010] As a preferred technical solution of this utility model, both the surface of the tower body and the surface of the detachable tower tube are fixedly provided with pads, and one side of the pad is fixed with a pipe clamp for supporting the output pipe by screws.

[0011] As a preferred embodiment of this utility model, an air inlet pipe is fixedly provided on the top of the tower body, and flanges are fixedly provided at both the input end of the air inlet pipe and the output end of the exhaust pipe.

[0012] As a preferred embodiment of this utility model, an inlet valve is fixedly installed at the top of the tower body, and a drain valve is fixedly installed at the bottom of the tower body.

[0013] Compared with the prior art, the present invention has the following beneficial effects: 1. The polyaluminum chloride spray drying tail gas treatment tower delivers spray liquid through a pumping component. The spray liquid can reach the flow guiding spray component, which can guide the tail gas, extend the tail gas delivery path, increase the spray area of ​​the tail gas, and increase the gas-liquid mixing time. This can prevent the gas from escaping directly without effectively colliding with the spray liquid, thereby improving the tail gas treatment efficiency.

[0014] 2. The polyaluminum chloride spray drying tail gas treatment tower has a support ring inside the detachable tower cylinder, which can provide support for the flow guiding spray assembly. The flow guiding spray assembly is modularly designed for easy and quick installation. The detachable tower cylinder is fixed between the tower body and the top cap with bolts, which facilitates its installation and disassembly. By disassembling the detachable tower cylinder, it is easy to remove the flow guiding spray assembly from inside the detachable tower cylinder. Attached Figure Description

[0015] Figure 1 This is one of the structural schematic diagrams of this utility model; Figure 2 This is the second structural schematic diagram of the present invention; Figure 3 This is a schematic diagram of the exploded structure of this utility model; Figure 4 This is a schematic diagram of the internal structure of the detachable tower of this utility model; Figure 5 This is a schematic diagram of the structure of the flow guiding spray assembly of this utility model; Figure 6 This is a schematic diagram of the pumping assembly of this utility model.

[0016] In the diagram: 1. Tower body; 2. Packing layer; 3. Detachable tower tube; 4. Support ring; 5. Flow guide spray assembly; 501. Riser; 502. Distribution pipe; 503. Pipe clamp one; 504. Spray head; 505. Guide plate; 506. Rubber strip; 507. Rising port; 508. Support rod; 6. Pumping assembly; 601. Casing; 602. Casing cover; 603. Circulating pump; 604. Input pipe; 605. Output pipe; 606. Connector one; 607. Conduit; 608. Connector two; 7. Top cap; 8. Mounting ring; 9. Sealing gasket; 10. Washer ring; 11. Air inlet pipe; 12. Exhaust pipe; 13. Flange; 14. Drain valve; 15. Inlet valve; 16. Pad; 17. Pipe clamp two; 18. Notch. Detailed Implementation

[0017] 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.

[0018] Please see Figures 1-6A polyaluminum chloride spray drying tail gas treatment tower includes a tower body 1, a packing layer 2 installed inside the tower body 1, a detachable tower cylinder 3 fixed to the top of the tower body 1 by bolts, a support ring 4 fixed to the inner wall of the bottom of the detachable tower cylinder 3, a flow guiding and spraying assembly 5 for guiding and spraying the tail gas at the top of the support ring 4, a pumping assembly 6 for pumping spray liquid to the flow guiding and spraying assembly 5 on one side of the tower body 1, a top cap 7 fixed to the top of the tower body 1 by bolts, and an exhaust pipe 12 fixed to the middle of the top of the top cap 7. By inputting the polyaluminum chloride spray drying tail gas into the tower body 1, the tail gas can rise from the tower body 1 to the detachable tower cylinder 3, and the spray liquid is transported by the pumping assembly 6. The spray liquid can reach the flow guiding and spraying assembly 5, which can guide the tail gas, extend the tail gas transport path, increase the tail gas spray area, increase the gas-liquid mixing time, prevent the gas from escaping directly without effective collision with the spray liquid, and improve the tail gas treatment efficiency. The flow-guiding spray assembly 5 includes a riser 501, to which several distribution pipes 502 are fixedly connected. Spray heads 504 are fixedly connected to the bottom of each distribution pipe 502. Several guide plates 505 are fixedly mounted on the surface of the riser 501. Support rods 508 are fixedly connected to each guide plate 505. A pipe clamp 503 for limiting the position of the distribution pipes 502 is fixedly installed at the bottom of each guide plate 505. A rubber strip 506 is fixedly mounted on the surface of each guide plate 505. Alternating risers 507 are provided on one side of each guide plate 505. The top of a support ring 4 is fixedly connected to the bottom of one of the guide plates 505 by screws. One side is provided with a notch 18 corresponding to the riser 507. The guide ring 4 can provide support for the flow guiding spray assembly 5 and prevent the flow guiding spray assembly 5 from falling. When the riser 501 transports the spray liquid, it can transport it to the distribution pipe 502. The distribution pipe 502 can spray the spray liquid evenly through the spray head 504. The riser 501 can provide stable support for the guide plate 505 through the support rod 508. The guide plate 505 can guide the exhaust gas through the riser 507 and extend the transport path of the exhaust gas. The rubber strip 506 can improve the fit between the guide plate 505 and the detachable tower 3 and the sealing performance. In this embodiment, preferably, the pumping assembly 6 includes a housing 601 and a conduit 607. The housing 601 is fixedly connected to the bottom of the tower body 1. A cover 602 is fixedly installed on one side of the housing 601 by screws. A circulation pump 603 is fixedly installed inside the housing 601. An input pipe 604 is fixedly provided at the input end of the circulation pump 603. The input end of the input pipe 604 is located inside the tower body 1. An output pipe 605 is fixedly connected to the output end of the circulation pump 603. A connector 606 is provided at the output end of the output pipe 605. The output pipe 605 is connected to a conduit 607 through the connector 606. 7. The output end of the conduit 607 is provided with a connector 608 connected to the riser 501. The surface of the tower body 1 and the surface of the detachable tower 3 are both fixed with pads 16. One side of the pad 16 is fixed with a pipe clamp 17 to support the output pipe 605 by screws. The pipe clamp 17 can support and limit the output pipe 605. The circulating pump 603 can draw the spray liquid inside the tower body 1 and pump the spray liquid to the riser 501 through the output pipe 605 and the conduit 607. The connector 606 and the connector 608 facilitate the installation and disassembly of the conduit 607. In this embodiment, preferably, both ends of the detachable tower 3 are fixedly provided with mounting rings 8, and the top end of the tower body 1 and the bottom end of the top cap 7 are fixedly provided with washers 10. The mounting rings 8 are fixedly connected to the washers 10 by bolts, and a sealing gasket 9 is provided between the washers 10 and the mounting rings 8. The mounting rings 8 and the washers 10 facilitate the installation and disassembly of the detachable tower 3. In this embodiment, preferably, an air inlet pipe 11 is fixedly provided at the top of the tower body 1, and flanges 13 are fixedly provided at the input end of the air inlet pipe 11 and the output end of the exhaust pipe 12. A liquid inlet valve 15 is fixedly installed at the top of the tower body 1, and a liquid drain valve 14 is fixedly installed at the bottom of the tower body 1. The exhaust gas can be input and output through the air inlet pipe 11 and the exhaust pipe 12, and the spray liquid can be input and output through the liquid inlet valve 15 and the liquid drain valve 14.

[0019] In use, first open the liquid inlet valve 15 to input the spray drying tail gas into the tower body 1 through the liquid inlet valve 15, and then close the liquid inlet valve 15. The tail gas can rise from the tower body 1 to the detachable tower 3. Then, the spray liquid inside the tower body 1 is drawn out by the circulation pump 603 of the pumping assembly 6. The circulation pump 603 pumps the spray liquid to the riser 501 of the guide spray assembly 5 through the output pipe 605 and the conduit 607. When the riser 501 delivers the spray liquid, it can deliver it to the distribution pipe 502. The distribution pipe 502 can spray the spray liquid evenly through the spray head 504. When the spray liquid reaches the packing layer 2, the contact area between the tail gas and the spray liquid increases when the tail gas passes through, which can prolong the gas-liquid reaction time. After the exhaust gas passes through the packing layer 2 and reaches the detachable tower 3, the guide plate 505 can guide the exhaust gas through the riser 507, which can extend the exhaust gas delivery path and increase the exhaust gas spray area. At the same time, it can increase the gas-liquid mixing time, which can prevent the gas from escaping directly without effectively colliding with the spray liquid, thus improving the exhaust gas treatment efficiency. The rubber strip 506 can improve the fit between the guide plate 505 and the detachable tower 3, and the sealing performance is good. The treated exhaust gas can be discharged through the exhaust pipe 12. When it is necessary to disassemble the flow guide spray assembly 5, loosen the screws fixing the top cap 7, disassemble the duct 607, remove it from the detachable tower 3, then loosen the bolts fixing the detachable tower 3, remove the detachable tower 3 from the tower body 1, and then loosen the screws fixing the flow guide plate 505, remove it from the support ring 4. This allows for disassembly, which is convenient for maintenance and cleaning.

[0020] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A polyaluminum chloride spray drying tail gas treatment tower comprising a tower body (1), characterized in that: The tower body (1) is equipped with a packing layer (2) inside. A detachable tower cylinder (3) is fixedly installed at the top of the tower body (1) by bolts. A support ring (4) is fixedly installed on the inner wall at the bottom of the detachable tower cylinder (3). A flow guiding and spraying assembly (5) for guiding and spraying exhaust gas is provided at the top of the support ring (4). A pumping assembly (6) for pumping spray liquid to the flow guiding and spraying assembly (5) is provided on one side of the tower body (1). A top cap (7) is fixedly installed at the top of the tower body (1) by bolts. An exhaust pipe (12) is fixedly installed at the middle of the top of the top cap (7). The flow-guiding spray assembly (5) includes a riser (501), which is fixedly connected to several distribution pipes (502). Spray heads (504) are fixedly connected to the bottom of the distribution pipes (502). Several guide plates (505) are fixedly provided on the surface of the riser (501). A support rod (508) is fixedly connected to the guide plate (505). A pipe clamp (503) for limiting the distribution pipes (502) is fixedly installed at the bottom of the guide plate (505). A rubber strip (506) is fixedly provided on the surface of the guide plate (505). An upward port (507) with mutual offset is provided on one side of the guide plate (505).

2. The polyaluminum chloride spray drying tail gas treatment tower according to claim 1, characterized in that: The top end of the support ring (4) is fixedly connected to the bottom end of one of the guide plates (505) by screws, and a notch (18) corresponding to the riser (507) is provided on one side of the support ring (4).

3. The polyaluminum chloride spray drying tail gas treatment tower according to claim 1, characterized in that: The detachable tower (3) is fixedly provided with mounting rings (8) at both ends. The top end of the tower body (1) and the bottom end of the top cap (7) are fixedly provided with washers (10). The mounting ring (8) is fixedly connected to the washer (10) by bolts. A sealing gasket (9) is provided between the washer (10) and the mounting ring (8).

4. The polyaluminum chloride spray drying tail gas treatment tower according to claim 1, characterized in that: The pumping assembly (6) includes a housing (601) and a conduit (607). The housing (601) is fixedly connected to the bottom of the tower body (1). A cover (602) is fixedly installed on one side of the housing (601) by screws. A circulating pump (603) is fixedly installed inside the housing (601). An input pipe (604) is fixedly provided at the input end of the circulating pump (603). The input end of the input pipe (604) is located inside the tower body (1). An output pipe (605) is fixedly connected at the output end of the circulating pump (603). A connector (606) is provided at the output end of the output pipe (605). A conduit (607) is connected to the output pipe (605) through the connector (606). A connector (608) is provided at the output end of the conduit (607) and connected to the riser (501).

5. The polyaluminum chloride spray drying tail gas treatment tower according to claim 4, characterized in that: Both the surface of the tower body (1) and the surface of the detachable tower tube (3) are fixedly provided with pads (16), and one side of the pads (16) is fixed with a pipe clamp (17) to support the output pipe (605) by screws.

6. The polyaluminum chloride spray drying tail gas treatment tower according to claim 1, characterized in that: An air inlet pipe (11) is fixedly provided on the top of the tower body (1), and a flange (13) is fixedly provided at the input end of the air inlet pipe (11) and the output end of the exhaust pipe (12).

7. The polyaluminum chloride spray drying tail gas treatment tower according to claim 1, characterized in that: A liquid inlet valve (15) is fixedly installed at the top of the tower body (1), and a liquid drain valve (14) is fixedly installed at the bottom of the tower body (1).

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