Fluorine-containing waste gas treatment device

Abstract

The utility model discloses a fluorine-containing waste gas treatment device which comprises a treatment box, the treatment box is of a structure with a cylindrical upper part and a conical lower part, a slag discharge port is formed in the bottom of the treatment box, and a fixed cylinder fixed at the bottom of the inner side of the treatment box is arranged above the slag discharge port; the inner diameter of the fixing cylinder is equal to the diameter of the slag discharging opening, a plurality of communicating openings are formed in the side face of the fixing cylinder at equal intervals, a connecting rod is vertically arranged in the fixing cylinder, the top end of the connecting rod extends out of the fixing cylinder, a floating ball is fixed to the top end of the connecting rod, and a plugging block is fixed to the bottom of the connecting rod; the plugging block is in clearance fit with the slag discharging opening; according to the utility model, fluorine-containing waste gas can be washed for multiple times, waste gas and particles in the waste gas can be effectively removed, and meanwhile, slag and water can be automatically discharged at set intervals during operation.

Description

Technical Field

[0001] The utility model relates to the technical field of waste gas treatment, in particular to a treatment device for fluorine-containing waste gas. Background Art

[0002] Fluorine-containing waste gas treatment technology is to remove fluorine-containing waste gas by absorption, adsorption and other methods. Fluorine-containing waste gas refers to gas containing hydrogen fluoride and silicon tetrafluoride, which mainly comes from industrial production processes; electrolytic aluminum and steelmaking processes in the metallurgical industry; phosphate fertilizer and fluoroplastic production in the chemical industry; ironmaking furnaces in the foundry industry, etc., all of which emit a large amount of fluorine-containing waste gas.

[0003] The main methods for purifying fluorine-containing waste gas are wet absorption and dry adsorption. The wet absorption process uses liquid absorption to wash the fluorine-containing waste gas with liquid to achieve the purpose of purification and recovery. After the waste gas is treated, there are still some waste particles from electrolytic aluminum or steelmaking, which are not easy to deal with. Utility Model Content

[0004] The utility model aims to provide a device for treating fluorine-containing waste gas to solve the problems in the prior art.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a treatment device for fluorine-containing waste gas, comprising a treatment box, the treatment box is a structure with a cylindrical upper part and a conical lower part, a slag discharge port is provided at the bottom of the treatment box, a fixed cylinder fixed to the bottom inner side of the treatment box is arranged above the slag discharge port, the inner diameter of the fixed cylinder is equal to the diameter of the slag discharge port, a plurality of connecting ports are equidistantly arranged on the side of the fixed cylinder, a connecting rod is vertically arranged inside the fixed cylinder, the top end of the connecting rod extends out of the fixed cylinder, and a floating ball is fixed to the top end of the connecting rod, a blocking block is fixed to the bottom of the connecting rod, the blocking block is clearance-matched with the slag discharge port, an L-shaped air inlet pipe is fixedly arranged on the outer side of the treatment box, the bottom end of the air inlet pipe is connected to the conical part of the treatment box, a water inlet pipe is fixed to the middle position of the outer top of the treatment box, an atomizing nozzle is fixed to the middle position of the inner top of the treatment box, and an air outlet pipe is fixed to one side of the outer top of the treatment box.

[0006] Preferably, the atomizing nozzle is a vertical cylindrical structure.

[0007] Preferably, intercepting plates arranged vertically in a staggered manner are provided inside the air outlet pipe, and one end of the intercepting plate away from the air outlet pipe is inclined downward.

[0008] Preferably, the fixing cylinder is a structure with a conical upper portion and a cylindrical lower portion.

[0009] Preferably, a blocking block limiting frame is fixedly provided at the bottom of the slag discharge port.

[0010] Compared with the prior art, the utility model has the following beneficial effects: the liquid for treating fluorine-containing waste gas enters the interior of the device through the water inlet pipe, and the fluorine-containing waste gas enters the interior of the device through the air inlet pipe. During operation, since the air inlet pipe is connected to the conical part of the treatment box, the fluorine-containing waste gas entering will first be cleaned by the liquid accumulated at the bottom inner side of the treatment box, and then be cleaned for the second time by the water mist formed by the atomizing nozzle, and finally be discharged from the air outlet pipe. The liquid continuously accumulated in the treatment box will cause the float to rise, and eventually the blocking block will temporarily lose its blocking effect. At this time, the accumulated liquid will be discharged from the slag discharge port. At the same time, the washed particles will be discharged from the device with the flow of the liquid. After the liquid level height is reduced to a certain level, the blocking block will re-seal the slag discharge port. In summary, the utility model can wash the fluorine-containing waste gas multiple times, and can effectively remove the waste gas and particles in the waste gas. At the same time, the utility model will automatically perform slag discharge and water discharge actions at regular intervals during operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0012] Figure 1 It is a structural schematic diagram of the overall internal cross section of the utility model;

[0013] Figure 2 It is a schematic diagram of the overall external structure of the utility model.

[0014] In the figure: 1. treatment box; 2. air outlet pipe; 3. water inlet pipe; 4. air inlet pipe; 5. connecting port; 6. float; 7. connecting rod; 8. blocking block; 9. blocking block limit frame; 10. slag discharge port; 11. atomizing nozzle; 12. intercepting plate; 13. fixing cylinder. DETAILED DESCRIPTION

[0015] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the utility model. Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the utility model for which protection is sought, but merely represents the selected embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the utility model.

[0016] See also Figure 1-2 In the embodiment of the utility model, a device for treating fluorine-containing waste gas includes a treatment box 1, which is a structure with a cylindrical upper part and a conical lower part. A slag discharge port 10 is provided at the bottom of the treatment box 1. A fixed cylinder 13 fixed to the bottom of the inner side of the treatment box 1 is provided above the slag discharge port 10. The inner diameter of the fixed cylinder 13 is equal to the diameter of the slag discharge port 10. A plurality of connecting ports 5 are provided at equal intervals on the side of the fixed cylinder 13. A connecting rod 7 is vertically provided inside the fixed cylinder 13. The top of the connecting rod 7 extends out of a fixed A fixed cylinder 13 is provided, and a float 6 is fixed to the top of the connecting rod 7, a sealing block 8 is fixed to the bottom of the connecting rod 7, the sealing block 8 is clearance-matched with the slag discharge port 10, an L-shaped air inlet pipe 4 is fixedly provided on the outer side of the processing box 1, the bottom end of the air inlet pipe 4 is connected to the conical part of the processing box 1, a water inlet pipe 3 is fixed to the middle position of the outer top of the processing box 1, an atomizing nozzle 11 is fixed to the middle position of the inner top of the processing box 1, and an air outlet pipe 2 is fixed to one side of the outer top of the processing box 1.

[0017] The atomizing nozzle 11 is in a vertical cylindrical structure. The water mist generated by the atomizing nozzle 11 in a vertical cylindrical shape is thicker, thereby producing a better washing effect.

[0018] The interior of the exhaust pipe 2 is provided with interception plates 12 which are arranged in an up-and-down staggered manner. The end of the interception plate 12 away from the exhaust pipe 2 is tilted downward. The humidity of the exhaust gas after water washing is relatively high. The interception plates 12 which are arranged in an up-and-down and staggered manner can intercept the moisture in the exhaust gas, thereby reducing the humidity of the exhaust gas discharged.

[0019] The fixed cylinder 13 is a structure that is conical at the top and cylindrical at the bottom. The conical top structure can effectively reduce the particles that are retained at the top of the fixed cylinder 13 .

[0020] A blocking block limiting frame 9 is fixedly provided at the bottom of the slag discharge port 10 , and the blocking block limiting frame 9 is used to support and limit the blocking block 8 .

[0021] The working principle of the utility model is as follows: the liquid for treating the fluorine-containing waste gas enters the interior of the device through the water inlet pipe 3, and the fluorine-containing waste gas enters the interior of the device through the air inlet pipe 4. During operation, since the air inlet pipe 4 is connected to the conical part of the treatment box 1, the fluorine-containing waste gas entering will first be cleaned by the liquid accumulated at the bottom of the inner side of the treatment box 1, and then be cleaned for the second time by the water mist formed by the atomizing nozzle 11, and finally be discharged from the air outlet pipe 2. The liquid continuously accumulated in the treatment box 1 will cause the float 6 to rise, and eventually the blocking block 8 will temporarily lose its blocking effect. At this time, the accumulated liquid will be discharged from the slag discharge port 10. At the same time, the washed particles will be discharged from the device with the flow of the liquid. After the liquid level height is reduced to a certain level, the blocking block 8 will re-seal the slag discharge port 10. In summary, the utility model can wash the fluorine-containing waste gas for multiple times, and can effectively remove the waste gas and particles in the waste gas. At the same time, the utility model will automatically perform slag discharge and water drainage actions at regular intervals during operation.

[0022] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A device for treating fluorine-containing waste gas, characterized in that: The invention comprises a treatment box (1), wherein the treatment box (1) is a structure with a cylindrical upper part and a conical lower part, a slag discharge port (10) is provided at the bottom of the treatment box (1), a fixed cylinder (13) fixed to the inner bottom of the treatment box (1) is provided above the slag discharge port (10), the inner diameter of the fixed cylinder (13) is equal to the diameter of the slag discharge port (10), a plurality of communication ports (5) are provided at equal intervals on the side of the fixed cylinder (13), a connecting rod (7) is vertically provided inside the fixed cylinder (13), the top end of the connecting rod (7) extends out of the fixed cylinder (13), and the connecting rod (7) A floating ball (6) is fixed at the top of the connecting rod (7), a blocking block (8) is fixed at the bottom of the connecting rod (7), the blocking block (8) and the slag discharge port (10) are in clearance fit, an L-shaped air inlet pipe (4) is fixedly provided on the outer side of the processing box (1), the bottom end of the air inlet pipe (4) is connected to the conical part of the processing box (1), a water inlet pipe (3) is fixed at the middle position of the outer top of the processing box (1), an atomizing nozzle (11) is fixed at the middle position of the inner top of the processing box (1), and an air outlet pipe (2) is fixed on one side of the outer top of the processing box (1).

2. The device for treating fluorine-containing waste gas according to claim 1, characterized in that: The atomizing nozzle (11) is in a vertical cylindrical structure.

3. The device for treating fluorine-containing waste gas according to claim 1, characterized in that: The air outlet pipe (2) is provided with interception plates (12) arranged in a staggered manner up and down, and one end of the interception plate (12) away from the air outlet pipe (2) is inclined downward.

4. The device for treating fluorine-containing waste gas according to claim 1, characterized in that: The fixing cylinder (13) is a structure with a conical upper portion and a cylindrical lower portion.

5. The device for treating fluorine-containing waste gas according to claim 1, characterized in that: A blocking block limiting frame (9) is fixedly arranged at the bottom of the slag discharge port (10).

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