Mining washing tower with tail gas purification and emission functions

Abstract

The utility model relates to the technical field of washing towers, and discloses a mining washing tower with tail gas purification and emission, which comprises a washing tower main body, a purification assembly is arranged in the washing tower main body, the purification assembly comprises two purification boxes fixed in the washing tower main body, and a three-way electromagnetic valve is fixed on the left side of the outer wall of the washing tower main body. A one-way pipe of the three-way electromagnetic valve is connected with a fluosilicic acid solution input pipe, and a two-way pipe of the three-way electromagnetic valve penetrates through the outer wall of the washing tower main body and is respectively communicated and fixed with the right sides of the two purification boxes. The two purification boxes are arranged in the washing tower body and can receive tail gas in turn, fluosilicic acid washing liquid in the purification boxes reacts with hydrofluoric acid in the tail gas to generate hexafluorosilicic acid and water, so that purification is achieved, the two purification boxes can change liquid automatically, continuous reaction of a single purification box is effectively prevented, and the service life of the tail gas is prolonged. And hexafluorosilicic acid and water are continuously generated in the purification box to dilute the washing liquid, so that the purification effect on the tail gas is influenced.

Description

Technical Field

[0001] The utility model relates to the technical field of washing towers, in particular to a mining washing tower with tail gas purification and emission. Background Art

[0002] Calcium fluoride, also known as fluorite, is a fluorine-containing ore. It is a naturally occurring mineral that is commonly found in rocks and deposits in the earth's crust. Calcium fluoride usually appears in various colors, including transparent, white, purple, yellow, green, etc., depending on the impurities in it. Calcium fluoride has important uses in industry, one of the most famous uses of which is as a flux for aluminum smelting. During the heating reaction of calcium fluoride, tail gas containing hydrofluoric acid is produced. If it is not purified and discharged, it will seriously pollute the environment.

[0003] An existing tail gas scrubber (Announcement No.: CN220370767U) has the following defects: the above-mentioned device purifies the tail gas by inputting it into a scrubbing liquid containing a fluorosilicic acid solution, but since the fluorosilicic acid solution reacts with hydrofluoric acid to continuously generate hexafluorosilicic acid and water, the scrubbing liquid is gradually diluted, affecting the purification effect of the scrubbing liquid, and the scrubbing liquid cannot be automatically replaced, affecting the purification efficiency of the tail gas. Utility Model Content

[0004] The utility model aims to solve the problems existing in the prior art and proposes a mining washing tower with tail gas purification and emission.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A mining washing tower with exhaust gas purification and emission comprises a washing tower body, the top surface of the washing tower body is connected to and fixed with an exhaust pipe, a spray disk is fixed inside the washing tower body, the bottom surface of the spray disk is connected to and fixed with an atomizing nozzle, a condensate delivery pipe is arranged on the left side of the outer wall of the washing tower body, one end of the condensate delivery pipe extends to the inside of the washing tower body and is connected to and fixed with the outer wall of the spray disk, a purification component is arranged inside the washing tower body, the purification component comprises two purification boxes fixed inside the washing tower body, a three-way solenoid valve is fixed on the left side of the outer wall of the washing tower body, the single-way pipe of the three-way solenoid valve is connected to a fluorosilicic acid solution input pipe, and the double-way pipe of the three-way solenoid valve passes through the outer wall of the washing tower body and is respectively connected to and fixed with the right sides of the two purification boxes.

[0007] Preferably, a three-way solenoid valve is fixed on the right side of the outer wall of the washing tower body, and the two-way pipe of the three-way solenoid valve penetrates the outer wall of the washing tower body and is connected and fixed to the top surfaces of the two purification boxes respectively, a liquid level gauge is fixed on the top surface of the purification box, and the detection end of the liquid level gauge penetrates and extends to the interior of the purification box, the bottom surface of the purification box is connected and fixed with a solenoid valve, the bottom end of the solenoid valve is connected with a first drain pipe, the right side of the outer wall of the washing tower body is connected and fixed with a second drain pipe, one end of the second drain pipe extending to the interior of the washing tower body is fixed with a three-way joint, the two first drain pipes are respectively connected to the two interface ends of the three-way joint, a PLC controller is fixed on the left side of the outer wall of the washing tower body, and an air outlet pipe is connected and fixed to the top surface of the purification box, and the outlet end of the air outlet pipe faces the inner bottom surface of the washing tower body.

[0008] Preferably, a plurality of ventilation holes are provided on the top surface of the spray plate, and the ventilation holes are not connected with the interior of the spray plate.

[0009] Preferably, the bottom surface of the washing tower body is connected to and fixed with a solenoid valve, the bottom end of the solenoid valve is connected to a third liquid discharge pipe, the outer wall of the washing tower body is provided with a cleaning hole, the front side hinge of the outer wall of the washing tower body is connected with a sealing cover, the sealing cover corresponds to the position of the cleaning hole, the sealing cover is connected to the washing tower body with bolts, and a sewage filter is fixed inside the washing tower body, and the sewage filter is located below the purification box.

[0010] Preferably, an air inlet is opened on the front side of the outer wall of the washing tower body, an exhaust fan is fixed inside the air inlet, and a dust filter is fixed inside the exhaust fan.

[0011] Preferably, a cone block is fixed to the top surface of the purification box.

[0012] The beneficial effects of the utility model are:

[0013] By arranging two purification boxes inside the main body of the washing tower, the exhaust gas can be received in turn, and the fluorosilicic acid washing liquid inside the purification box is used to react with the hydrofluoric acid in the exhaust gas to generate hexafluorosilicic acid and water, so as to achieve purification. After the washing liquid inside one of the purification boxes has completely reacted, the exhaust gas is switched and input into the other purification box for purification. At this time, the washing liquid inside the purification box after the complete reaction is discharged and replaced with new washing liquid, so as to achieve automatic liquid replacement, effectively preventing a single purification box from continuously reacting, causing hexafluorosilicic acid and water to be continuously generated inside the purification box to dilute the washing liquid, affecting the purification effect of the exhaust gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the three-dimensional structure proposed by the utility model;

[0015] Figure 2 This is a schematic diagram of the three-dimensional split structure proposed by the utility model;

[0016] Figure 3 This is a schematic diagram of the cross-sectional structure of the washing tower body proposed by the utility model;

[0017] Figure 4 This is a schematic diagram of the three-dimensional structure of the purification box proposed by the utility model.

[0018] In the figure: 1. washing tower body; 101. exhaust pipe; 102. spray plate; 2. purification box; 201. liquid level meter; 202. first drain pipe; 203. second drain pipe; 204. air outlet pipe; 3. air vent; 4. third drain pipe; 401. cleaning hole; 402. sealing cover; 403. sewage filter; 5. air inlet; 501. exhaust fan; 502. dust filter; 6. cone block. DETAILED DESCRIPTION

[0019] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only 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 creative work are within the scope of protection of the utility model.

[0021] Please see attached Figure 1 -Attached Figure 4 A mining washing tower with tail gas purification and emission comprises a washing tower body 1, the top surface of the washing tower body 1 is connected to and fixed with an exhaust pipe 101, a spray plate 102 is fixed inside the washing tower body 1, the bottom surface of the spray plate 102 is connected to and fixed with an atomizing nozzle, a condensate delivery pipe is arranged on the left side of the outer wall of the washing tower body 1, one end of the condensate delivery pipe extends to the inside of the washing tower body 1 and is connected to and fixed with the outer wall of the spray plate 102, a purification component is arranged inside the washing tower body 1, the purification component comprises two purification boxes 2 fixed inside the washing tower body 1, a three-way solenoid valve is fixed on the left side of the outer wall of the washing tower body 1, the single-way pipe of the three-way solenoid valve is connected with a fluorosilicic acid solution input pipe, and the double-way pipe of the three-way solenoid valve passes through the outer wall of the washing tower body 1 and is respectively connected to and fixed with the right sides of the two purification boxes 2.

[0022] In the embodiment, a three-way solenoid valve is fixed on the right side of the outer wall of the washing tower body 1, and the two-way pipe of the three-way solenoid valve passes through the outer wall of the washing tower body 1 and is connected and fixed to the top surfaces of the two purification boxes 2 respectively, and a liquid level gauge 201 is fixed on the top surface of the purification box 2, and the detection end of the liquid level gauge 201 passes through and extends to the interior of the purification box 2, and the bottom surface of the purification box 2 is connected and fixed with a solenoid valve, and the bottom end of the solenoid valve is connected to a first drain pipe 202, and the right side of the outer wall of the washing tower body 1 is connected and fixed with a second drain pipe 203, and one end of the second drain pipe 203 extending to the interior of the washing tower body 1 is fixed with a three-way joint, and the two first drain pipes 202 are respectively connected to the two interface ends of the three-way joint, and a PLC controller is fixed on the left side of the outer wall of the washing tower body 1. The top surface is connected and fixed with an air outlet pipe 204, and the outlet end of the air outlet pipe 204 faces the inner bottom surface of the washing tower body 1. By arranging two purification boxes 2 inside the washing tower body 1, the exhaust gas can be received in turn, and the fluorosilicic acid washing liquid inside the purification box 2 is used to react with the hydrofluoric acid in the exhaust gas to generate hexafluorosilicic acid and water, so as to achieve purification. After the washing liquid inside one of the purification boxes 2 is completely reacted, the exhaust gas is switched and input into the inside of the other purification box 2 for purification. At this time, the washing liquid inside the purification box 2 after the complete reaction is discharged and replaced with new washing liquid, so as to realize automatic liquid replacement, effectively preventing a single purification box 2 from continuously reacting, so that hexafluorosilicic acid and water are continuously generated inside the purification box 2 to dilute the washing liquid, affecting the purification effect of the exhaust gas.

[0023] In the embodiment, a plurality of vent holes 3 are provided on the top surface of the spray plate 102, and the vent holes 3 are not connected to the interior of the spray plate 102. The provision and use of the vent holes 3 facilitate the exhaust gas to better pass through the spray plate 102 and be discharged from the exhaust pipe 101 after purification and condensation.

[0024] In the embodiment, the bottom surface of the washing tower body 1 is connected to and fixed with a solenoid valve, the bottom end of the solenoid valve is connected to a third drain pipe 4, the outer wall of the washing tower body 1 is provided with a cleaning hole 401, and the front hinge of the outer wall of the washing tower body 1 is connected with a sealing cover 402, the sealing cover 402 corresponds to the position of the cleaning hole 401, the sealing cover 402 is connected to the washing tower body 1 by bolts, and a sewage filter net 403 is fixed inside the washing tower body 1, and the sewage filter net 403 is located below the purification box 2. The liquid mixed with condensed water and exhaust gas can be discharged from the washing tower body 1 through the third drain pipe 4, and the solid reactants accumulated on the sewage filter net 403 can be conveniently cleaned by the staff by opening the sealing cover 402.

[0025] In the embodiment, an air inlet 5 is opened on the front side of the outer wall of the washing tower body 1, and an exhaust fan 501 is fixed inside the air inlet 5. A dust filter 502 is fixed inside the exhaust fan 501. The exhaust fan 501 can continuously exhaust air into the interior of the washing tower body 1, so that the exhaust gas can be input into the exhaust pipe 101 faster, thereby increasing the condensation efficiency of the washing tower body 1.

[0026] In the embodiment, a cone block 6 is fixed to the top surface of the purification box 2. The setting and use of the cone block 6 can prevent the fixed reactants produced by the condensation of exhaust gas from accumulating on the purification box 2. The liquid level meter 201, the three-way solenoid valve, the solenoid valve and the exhaust fan are all electrically connected to the PLC controller.

[0027] Working principle: When in use, the exhaust gas is input into one of the two-way pipes of the three-way solenoid valve through the single-way pipe of the three-way solenoid valve on the left side of the washing tower body 1, and then discharged into one of the purification boxes 2. At this time, the hydrofluoric acid in the exhaust gas reacts with the fluorosilicic acid washing liquid in the washing liquid inside the purification box 2 to continuously generate hexafluorosilicic acid and water. Then the exhaust gas is discharged into the interior of the washing tower body 1 from the outlet pipe 204, and then the condensed water is transported through the condensed water delivery pipe wind spray disk 102 and discharged from the atomizing nozzle to condense and wash the exhaust gas, and finally discharged from the exhaust pipe 101. At this time, the exhaust gas is condensed and washed to produce sewage and solid reactants. After being filtered by the sewage filter net 403, the sewage falls into the internal bottom surface of the washing tower body 1, and the solid reactants fall on the sewage filter net 403. Then, the solenoid valve of the third drain pipe 4 can be opened to discharge the sewage, and the sealing cover 402 can be opened for cleaning. When hexafluorosilicic acid and water are continuously generated inside the purification box 2 due to the reaction, the purification box 2 is constantly accumulating. When the liquid level meter 201 detects that the liquid has accumulated to a certain height, it means that the washing liquid inside the purification box 2 is diluted to an unusable state. Then the three-way solenoid valve on the left side of the washing tower body 1 is opened to input the tail gas to another purification box 2 for further reaction. At this time, the bottom solenoid valve of the unusable purification box 2 is opened, so that the waste water inside the unusable purification box 2 is discharged from the second drain pipe 203. At this time, the double-way pipe of the three-way solenoid valve on the right side of the washing tower body 1 and the connecting pipe with the unusable purification box 2 are opened, and the single-way pipe of the three-way solenoid valve inputs new washing liquid and inputs it from the opened connecting pipe to the inside of the unusable purification box 2, completing the replacement of the washing liquid. The exhaust fan 501 can continuously exhaust the inside of the washing tower body 1, so that the tail gas is input to the exhaust pipe 101 faster, thereby increasing the condensation efficiency of the washing tower body 1. The setting and use of the cone block 6 can prevent the fixed reactants generated by the condensation of the tail gas from accumulating on the purification box 2.

[0028] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A mining scrubber with tail gas purification and emission, comprising a scrubber body (1), characterized in that: The top surface of the washing tower body (1) is connected to and fixed with an exhaust pipe (101), a spray disc (102) is fixed inside the washing tower body (1), and an atomizing nozzle is connected to and fixed on the bottom surface of the spray disc (102). A condensate delivery pipe is arranged on the left side of the outer wall of the washing tower body (1), one end of the condensate delivery pipe extends to the inside of the washing tower body (1) and is connected to and fixed with the outer wall of the spray disc (102). A purification component is arranged inside the washing tower body (1), and the purification component includes two purification boxes (2) fixed inside the washing tower body (1). A three-way solenoid valve is fixed on the left side of the outer wall of the washing tower body (1), the single-way pipe of the three-way solenoid valve is connected to the fluorosilicic acid solution input pipe, and the double-way pipe of the three-way solenoid valve passes through the outer wall of the washing tower body (1) and is connected to and fixed with the right sides of the two purification boxes (2) respectively.

2. A mining washing tower with tail gas purification and emission according to claim 1, characterized in that: A three-way solenoid valve is fixed on the right side of the outer wall of the washing tower body (1); a two-way pipe of the three-way solenoid valve passes through the outer wall of the washing tower body (1) and is connected and fixed to the top surfaces of the two purification boxes (2) respectively; a liquid level meter (201) is fixed to the top surface of the purification box (2); a detection end of the liquid level meter (201) passes through and extends to the interior of the purification box (2); a solenoid valve is connected and fixed to the bottom surface of the purification box (2); a first liquid discharge pipe (202) is connected to the bottom end of the solenoid valve; and the washing tower body The right side of the outer wall of the washing tower (1) is connected to and fixed with a second liquid discharge pipe (203), one end of the second liquid discharge pipe (203) extending to the inside of the washing tower body (1) is fixed with a three-way joint, and the two first liquid discharge pipes (202) are respectively connected to the two interface ends of the three-way joint, and a PLC controller is fixed to the left side of the outer wall of the washing tower body (1), and the top surface of the purification box (2) is connected to and fixed with an air outlet pipe (204), and the outlet end of the air outlet pipe (204) faces the inner bottom surface of the washing tower body (1).

3. A mining washing tower with tail gas purification and emission according to claim 2, characterized in that: A plurality of vent holes (3) are provided on the top surface of the spray plate (102), and the vent holes (3) are not connected to the interior of the spray plate (102).

4. A mining washing tower with tail gas purification and emission according to claim 3, characterized in that: The bottom surface of the washing tower body (1) is connected to and fixed with a solenoid valve, the bottom end of the solenoid valve is connected to a third liquid discharge pipe (4), the outer wall of the washing tower body (1) is provided with a cleaning hole (401), the front side of the outer wall of the washing tower body (1) is hingedly connected with a sealing cover (402), the sealing cover (402) corresponds to the position of the cleaning hole (401), the sealing cover (402) and the washing tower body (1) are connected by bolts, and a sewage filter net (403) is fixed inside the washing tower body (1), and the sewage filter net (403) is located below the purification box (2).

5. A mining washing tower with tail gas purification and emission according to claim 4, characterized in that: An air inlet (5) is provided on the front side of the outer wall of the washing tower body (1), an exhaust fan (501) is fixed inside the air inlet (5), and a dust filter (502) is fixed inside the exhaust fan (501).

6. A mining washing tower with tail gas purification and emission according to claim 5, characterized in that: A cone block (6) is fixed on the top surface of the purification box (2).

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