Lithium salt processing waste gas treatment device and treatment method

Abstract

This invention discloses a lithium salt processing waste gas treatment device and method, relating to the field of waste gas treatment technology. It includes a bubble generating mechanism and a gear protective cover installed at the bottom of the bubble generating mechanism. A waste gas treatment mechanism is arranged on the outside of the bubble generating mechanism, and a bottom rotating support is rotatably connected inside the waste gas treatment mechanism. The bubble generating mechanism includes an air inlet connecting pipe, with a first hemispherical filter screen fixedly installed on the outside of the air inlet connecting pipe. A sealing hemisphere is fixedly installed on the top of the first hemispherical filter screen, and a spherical guide cover is fixedly installed on the bottom of the sealing hemisphere. The first hemispherical filter screen allows the incoming waste gas to be ejected as bubbles from the first hemispherical filter screen. Simultaneously, a second hemispherical filter screen on the outside refines the bubbles, breaking large bubbles into smaller bubbles, facilitating a full reaction between the waste gas and the purification liquid and improving the purification effect of the waste gas.

Description

Technical Field

[0001] This invention relates to the field of waste gas treatment technology, specifically to a lithium salt processing waste gas treatment device and treatment method. Background Technology

[0002] Lithium salts generally refer to salt compounds containing lithium. The basic lithium salt is mainly lithium carbonate. Products processed from primary lithium salts include lithium chloride, lithium bromide, lithium sulfate, lithium fluoride, lithium phosphate, lithium perchlorate, and lithium nitrate. Lithium salts are mostly ionic crystals. Lithium ions have small radii and strong polarization. Their halides can exhibit varying degrees of covalentity. Lithium salts have strong hydration capabilities; almost all lithium salts are hydrated. The solubility of lithium salts is related to the type of anion. Lithium salts (such as lithium hexafluorophosphate) release various harmful gases during production, storage, and use, thus requiring waste gas treatment.

[0003] Publication No. CN117180967B discloses a waste gas treatment system. Waste gas is introduced into a neutralization structure in a first gas-liquid mixing section through an inlet, and treatment liquid is introduced into the neutralization structure through a first filling pipe. The waste gas and treatment liquid react in the neutralization structure and are discharged through a first discharge pipe after purification. This system facilitates a thorough reaction between the waste gas and treatment liquid in the neutralization structure, thereby improving the waste gas absorption rate and reducing secondary pollution. However, this patent still has the following problems in practical use:

[0004] Although the waste gas treatment system allows the waste gas and the treatment liquid to react in the neutralization structure and be discharged through the first discharge pipe after purification, which is beneficial for the waste gas to fully react with the treatment liquid in the neutralization structure, the system cannot achieve uniform gas-liquid distribution when the waste gas is introduced into the neutralization structure. This results in insufficient contact between the waste gas and the treatment liquid, and some areas are not completely neutralized, thus affecting the waste gas treatment effect.

[0005] Therefore, a lithium salt processing waste gas treatment device and method are proposed to solve the problems mentioned above. Summary of the Invention

[0006] The purpose of this invention is to provide a lithium salt processing waste gas treatment device and method to solve the problem mentioned in the background art that when waste gas is introduced into the neutralization structure, uniform gas-liquid distribution cannot be achieved, resulting in insufficient contact between waste gas and treatment liquid, and some areas are not completely neutralized, thereby affecting the waste gas treatment effect.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a lithium salt processing waste gas treatment device and treatment method, including a bubble generating mechanism and a gear protective cover installed at the bottom of the bubble generating mechanism;

[0008] An exhaust gas treatment mechanism is provided on the outside of the bubble generating mechanism, and a bottom rotating bracket is rotatably connected inside the exhaust gas treatment mechanism.

[0009] Also includes:

[0010] The bubble generating mechanism includes an air inlet connecting pipe, a first hemispherical filter screen is fixedly installed on the outside of the air inlet connecting pipe, and a sealing hemisphere is fixedly installed on the top of the first hemispherical filter screen.

[0011] Among them, a spherical guide cover is fixedly installed at the bottom of the sealed hemisphere, and a second hemispherical filter screen is rotatably connected to the inner bottom of the spherical guide cover;

[0012] The bottom of the second hemisphere filter screen is fixedly installed with a rotating connecting sleeve, and the top of the second hemisphere filter screen near the rotating connecting sleeve has a rotating groove.

[0013] Preferably, a one-way valve is fixedly installed at the top of the air intake connection pipe, a one-way locking ring is installed on the inner bottom side of the one-way valve, a valve bracket is fixedly installed on the inner top side of the one-way valve, a valve telescopic rod is fixedly installed at the bottom of the valve bracket, a valve spring is fixedly installed on the outer side of the valve bracket near the valve telescopic rod, and a locking piston is fixedly installed at the bottom of the valve telescopic rod and the valve spring. The locking piston is engaged with the one-way locking ring.

[0014] By adopting the above technical solution, the sealing hemisphere and spherical guide cover at the top of the first hemispherical filter screen can guide the incoming waste gas. The first hemispherical filter screen can spray the incoming waste gas out in the form of bubbles. At the same time, the outer second hemispherical filter screen can refine the bubbles, breaking large bubbles into smaller bubbles, which facilitates the full reaction between waste gas and purification liquid and improves the purification effect of waste gas. The one-way valve at the top of the air inlet connecting pipe can realize the one-way flow of gas.

[0015] Preferably, a first rotating motor is fixedly installed on one side of the bottom of the gear protective cover, a rotating main gear is fixedly connected to the output end of the first rotating motor, a rotating driven gear is meshed on one side of the rotating main gear, both the rotating driven gear and the rotating main gear are rotatably connected to the gear protective cover, and the air intake connection pipe is fixedly installed inside the rotating main gear.

[0016] By adopting the above technical solution, the first rotating motor is started to drive the rotating main gear to rotate. Utilizing the meshing connection between the rotating main gear and the rotating driven gear, the rotating driven gear drives the intake connecting pipe and the first hemispherical filter screen to rotate.

[0017] Preferably, a rotating connecting pipe is rotatably connected to the bottom of the air intake connecting pipe, an air intake bend is fixedly installed at the bottom of the rotating connecting pipe, a rotating connecting rod is fixedly installed at the top of the sealing hemisphere, a plurality of rotating mounting rings are fixedly installed on the outer side of the rotating connecting rod, and a conical deceleration net is fixedly installed on the outer side of the rotating mounting ring.

[0018] By adopting the above technical solution, the exhaust gas can be easily introduced into the treatment cylinder in the form of bubbles through rotation. The bubbles pass through the spherical guide shroud and the first hemispherical filter screen, causing them to enter the bottom of the treatment cylinder at an angle, thereby increasing the reaction time between the bubbles and the purification liquid and improving the purification effect of the exhaust gas. The conical deceleration net on the outside of the rotating connecting rod can decelerate the rising bubbles, further increasing the reaction time between the bubbles and the purification liquid.

[0019] Preferably, a plurality of horizontal stirring rods are fixedly installed on the inner side of the rotating connecting rod near the conical deceleration net, and horizontal spikes are fixedly installed on the ends of the horizontal stirring rods, while a plurality of vertical spikes are fixedly installed on the outer sides of the horizontal stirring rods.

[0020] By adopting the above technical solution, the rotating connecting rod drives the horizontal stirring rod to rotate, which further reduces the volume of bubbles through stirring. The bubbles are then punctured by horizontal and vertical spikes, allowing the waste gas and the purified liquid to react fully. At the same time, the conical deceleration net can guide the precipitates produced by the reaction. Furthermore, the buoyancy of the rising bubbles can prevent the conical deceleration net from becoming clogged, thus avoiding affecting its deceleration effect.

[0021] Preferably, the waste gas treatment mechanism includes a treatment cylinder, the gear protective cover is fixedly installed at the bottom of the treatment cylinder, support legs are fixedly installed around the bottom of the treatment cylinder, a drain valve is fixedly installed on the outer side of the bottom of the treatment cylinder, and a second rotating motor is fixedly installed at the center of the top of the treatment cylinder.

[0022] By adopting the above technical solution, the purification liquid inside the treatment cylinder, such as lime milk (Ca(OH)2) or sodium hydroxide (NaOH) solution, reacts with the lime milk (Ca(OH)2) or sodium hydroxide (NaOH) to generate calcium fluoride (CaF2) precipitate or sodium fluoride, thereby achieving the effect of treating hydrogen fluoride waste gas.

[0023] Preferably, the output end of the second rotating motor is fixedly connected to a top rotating bracket, the top rotating bracket is rotatably connected to a rotating connecting rod, a plurality of first connecting spiral blades are fixedly installed on the bottom outer ring of the top rotating bracket, a first conical guide net is fixedly installed on the bottom of the first connecting spiral blades, and a plurality of second connecting spiral blades are fixedly installed on the bottom outer ring of the first conical guide net.

[0024] By adopting the above technical solution, the second rotating motor drives the top rotating bracket and the first connecting spiral blade to rotate. At the same time, the first connecting spiral blade drives the first conical guide net, the second connecting spiral blade, the second conical guide net, the third connecting spiral blade, the third conical guide net, the fourth connecting spiral blade and the bottom rotating bracket to rotate. The rotation not only stirs the purified liquid and bubbles, but also improves the effect of waste gas treatment.

[0025] Preferably, a second conical guide net is fixedly installed at the bottom of the second connecting spiral blade, a plurality of third connecting spiral blades are fixedly installed on the bottom outer ring of the second conical guide net, a third conical guide net is fixedly installed at the bottom of the third connecting spiral blade, and a plurality of fourth connecting spiral blades are fixedly installed on the bottom outer ring of the third conical guide net. The first conical guide net, the second conical guide net, and the third conical guide net are all rotatably connected to the processing cylinder.

[0026] By adopting the above technical solution, the inner wall of the treatment cylinder can be cleaned by using the first connecting spiral blade, the second connecting spiral blade, the third connecting spiral blade and the fourth connecting spiral blade, thereby improving the purification effect of the treatment cylinder.

[0027] Preferably, the fourth connecting spiral blade is fixedly installed on the top outer ring of the bottom rotating bracket, the rotating connecting sleeve is fixedly installed on the top inner ring of the bottom rotating bracket, an exhaust bend is fixedly installed on the top of the processing cylinder, a secondary purification box is fixedly installed at the end of the exhaust bend, and a top exhaust pipe is fixedly installed at the top center of the secondary purification box.

[0028] By adopting the above technical solution, the bottom rotating bracket can drive the rotating connecting sleeve and the second hemispherical filter screen to rotate, and the second hemispherical filter screen and the first hemispherical filter screen rotate in opposite directions, thereby shearing the bubbles, reducing the volume of the bubbles, and further improving the effect of exhaust gas treatment. The exhaust gas after preliminary treatment enters the secondary purification box through the exhaust bend pipe, and the exhaust gas is further purified by the corresponding purification materials inside the secondary purification box, further improving the exhaust gas treatment effect.

[0029] Compared with the prior art, the beneficial effects of the present invention are:

[0030] This invention discloses a lithium salt processing waste gas treatment device and method. A first hemispherical filter screen directs the incoming waste gas as bubbles, while a second hemispherical filter screen refines these bubbles, breaking large bubbles down into smaller ones. This facilitates a more complete reaction between the waste gas and the purification liquid, improving the purification effect. A bottom rotating support drives the rotating connecting sleeve and the second hemispherical filter screen to rotate in opposite directions, thus shearing the bubbles and reducing their volume, further enhancing the waste gas treatment effect. The specific details are as follows:

[0031] 1. By setting up a bubble generating mechanism, the sealing hemisphere and spherical guide cover at the top of the first hemispherical filter screen can guide the incoming waste gas. The first hemispherical filter screen can spray the incoming waste gas out in the form of bubbles. At the same time, the outer second hemispherical filter screen can refine the bubbles, breaking large bubbles into smaller bubbles, which facilitates the full reaction between waste gas and purification liquid and improves the purification effect. The one-way valve at the top of the inlet connecting pipe can realize the one-way flow of gas. When backflow occurs, the elastic force of the valve extension rod and the valve spring can make the one-way locking ring engage with the locking piston, thereby closing the one-way valve and preventing backflow of gas and purification liquid, which would affect the waste gas purification effect. The first rotating motor is started to drive the rotating main gear to rotate. The meshing connection between the rotating main gear and the rotating driven gear makes... The rotation of the gear drives the intake connecting pipe and the first hemispherical filter to rotate, allowing the exhaust gas to enter the treatment cylinder in the form of bubbles. The bubbles, guided by the spherical guide and the first hemispherical filter, are directed downwards to the bottom of the treatment cylinder, increasing the reaction time between the bubbles and the purification liquid and improving the purification effect. The conical deceleration mesh on the outside of the rotating connecting rod slows down the rising bubbles, further increasing the reaction time. Simultaneously, the rotating connecting rod drives the horizontal stirring rod to rotate, further reducing the volume of the bubbles through stirring. Horizontal and vertical spikes puncture the bubbles, ensuring a thorough reaction between the exhaust gas and the purification liquid. The conical deceleration mesh also guides the precipitates produced during the reaction, and the buoyancy of the rising bubbles prevents blockage, thus avoiding any impact on the deceleration effect.

[0032] 2. By setting up a waste gas treatment mechanism, not only can the purification liquid inside the treatment cylinder, such as lime milk (Ca(OH)2) or sodium hydroxide (NaOH) solution, react with the lime milk (Ca(OH)2) or sodium hydroxide (NaOH) to generate calcium fluoride (CaF2) precipitate or sodium fluoride, thus achieving the effect of treating hydrogen fluoride waste gas, but also the second rotating motor drives the top rotating support and the first connecting spiral blade to rotate. Simultaneously, the first connecting spiral blade drives the first conical guide net, the second connecting spiral blade, the second conical guide net, the third connecting spiral blade, the third conical guide net, the fourth connecting spiral blade, and the bottom rotating support to rotate. This rotation not only... The purification liquid and air bubbles are stirred to improve the waste gas treatment effect. At the same time, the first, second, third and fourth connecting spiral blades can clean the inner wall of the treatment cylinder, thereby improving the purification effect of the treatment cylinder. The bottom rotating support can drive the rotating connecting sleeve and the second hemispherical filter to rotate, and the second hemispherical filter rotates in opposite directions to the first hemispherical filter, thereby shearing the air bubbles and reducing their volume, further improving the waste gas treatment effect. The waste gas after preliminary treatment enters the secondary purification box through the exhaust bend pipe, where the corresponding purification materials inside the secondary purification box perform secondary purification of the waste gas, further improving the waste gas treatment effect. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention;

[0034] Figure 2 This is a three-dimensional structural diagram of the bubble generating mechanism in this invention;

[0035] Figure 3 This is a three-dimensional structural diagram of the rotating main gear and the rotating driven gear in this invention;

[0036] Figure 4 This is a three-dimensional cross-sectional structural diagram of the sealing hemisphere and spherical guide cover in this invention;

[0037] Figure 5 This is a three-dimensional cross-sectional structural diagram of the one-way valve in this invention;

[0038] Figure 6 This is a three-dimensional structural diagram of the second hemispherical filter screen and the rotating connecting sleeve in this invention;

[0039] Figure 7 This is a schematic diagram of the three-dimensional structure of the first hemispherical filter screen in this invention;

[0040] Figure 8 This is a three-dimensional structural diagram of the conical deceleration mesh cross-section in this invention;

[0041] Figure 9This is a three-dimensional cross-sectional structural diagram of the waste gas treatment mechanism in this invention;

[0042] Figure 10 This is a three-dimensional structural diagram of the first connecting spiral blade and the bottom rotating support in this invention;

[0043] Figure 11 This is a three-dimensional cross-sectional structural diagram of the secondary purification box in this invention.

[0044] In the diagram: 1. Bubble generating mechanism; 101. Gear protective cover; 102. First rotating motor; 103. Rotating main gear; 104. Rotating driven gear; 105. Inlet connecting pipe; 106. Rotating connecting pipe; 107. Inlet bend; 108. One-way valve; 109. One-way locking ring; 110. Valve bracket; 111. Valve telescopic rod; 112. Valve spring; 113. Locking piston; 114. First hemispherical filter screen; 115. Sealing hemisphere; 116. Spherical guide cover; 117. Second hemispherical filter screen; 118. Rotating connecting sleeve; 119. Rotating groove; 120. Rotating connecting rod; 121. Rotating mounting. 1. Ring; 122. Conical deceleration net; 123. Horizontal stirring rod; 124. Horizontal spike; 125. Vertical spike; 2. Waste gas treatment mechanism; 201. Treatment cylinder; 202. Support leg; 203. Drain valve; 204. Second rotating motor; 205. Top rotating bracket; 206. First connecting spiral blade; 207. First conical guide net; 208. Second connecting spiral blade; 209. Second conical guide net; 210. Third connecting spiral blade; 211. Third conical guide net; 212. Fourth connecting spiral blade; 213. Bottom rotating bracket; 214. Exhaust bend; 215. Secondary purification box; 216. Top exhaust pipe. Detailed Implementation

[0045] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0046] Please see Figures 1-7 , Figure 9This invention provides a technical solution: a lithium salt processing waste gas treatment device and method, including a bubble generating mechanism 1 and a gear protective cover 101 installed at the bottom of the bubble generating mechanism 1. A waste gas treatment mechanism 2 is provided on the outside of the bubble generating mechanism 1, and a bottom rotating bracket 213 is rotatably connected inside the waste gas treatment mechanism 2. The bubble generating mechanism 1 includes an air inlet connecting pipe 105, a first hemispherical filter screen 114 is fixedly installed on the outside of the air inlet connecting pipe 105, a sealing hemisphere 115 is fixedly installed on the top of the first hemispherical filter screen 114, and a spherical guide cover 116 is fixedly installed on the bottom of the sealing hemisphere 115. The bottom inner side of the spherical guide cover 116 is rotatably connected to... A second hemispherical filter 117 is provided, wherein a rotating connecting sleeve 118 is fixedly installed at the bottom of the second hemispherical filter 117, and a rotating groove 119 is provided at the top of the second hemispherical filter 117 near the rotating connecting sleeve 118. The sealing hemisphere 115 and the spherical guide cover 116 at the top of the first hemispherical filter 114 can guide the incoming waste gas. The first hemispherical filter 114 can spray the incoming waste gas out in the form of bubbles. At the same time, the outer second hemispherical filter 117 refines the bubbles, breaking large bubbles into small bubbles, which facilitates the full reaction between waste gas and purification liquid and improves the purification effect of waste gas.

[0047] Please see Figures 3-5 A one-way valve 108 is fixedly installed at the top of the air inlet connecting pipe 105. A one-way locking ring 109 is installed on the inner bottom of the one-way valve 108. A valve bracket 110 is fixedly installed on the inner top of the one-way valve 108. A valve telescopic rod 111 is fixedly installed at the bottom of the valve bracket 110. A valve spring 112 is fixedly installed on the outer side of the valve bracket 110 near the valve telescopic rod 111. A locking piston 113 is fixedly installed at the bottom of the valve telescopic rod 111 and the valve spring 112. The locking piston 113 is engaged with the one-way locking ring 109. The one-way valve 108 at the top of the air inlet connecting pipe 105 enables one-way gas flow. When backflow occurs, the elastic force of the valve telescopic rod 111 and the valve spring 112 causes the one-way locking ring 109 to engage with the locking piston 113, thereby closing the one-way valve 108 and preventing backflow of gas and purified liquid, which would affect the exhaust gas purification effect.

[0048] Please see Figures 2-8 , Figure 9A first rotating motor 102 is fixedly installed on one side of the bottom of the gear protective cover 101. A rotating main gear 103 is fixedly connected to the output end of the first rotating motor 102. A rotating driven gear 104 is meshed with one side of the rotating main gear 103. Both the rotating driven gear 104 and the rotating main gear 103 are rotatably connected to the gear protective cover 101. An air intake connecting pipe 105 is fixedly installed inside the rotating main gear 103. A rotating connecting pipe 106 is rotatably connected to the bottom of the air intake connecting pipe 105. An air intake bend 107 is fixedly installed at the bottom of the rotating connecting pipe 106. A rotating connecting rod 120 is fixedly installed on the top of the sealed hemisphere 115. Several rotating mounting rings 121 are fixedly installed on the outer side of the rotating connecting rod 120. A conical deceleration mesh 122 is fixedly installed on the outer side of the rotating mounting rings 121. Several horizontal stirring rods 123 are fixedly installed on the inner side of the rotating connecting rod 120 near the conical deceleration mesh 122. Horizontal spikes 124 are fixedly installed at the ends of the horizontal stirring rods 123. Several vertical spikes 125 are fixedly installed on the outer side of the horizontal stirring rods 123. The first rotating motor 102 is started to drive the rotating main gear 103 to rotate. Utilizing the meshing connection between the main gear 103 and the driven gear 104, the driven gear 104 drives the intake connecting pipe 105 and the first hemispherical filter screen 114 to rotate. This rotation facilitates the entry of exhaust gas into the treatment cylinder 201 in the form of bubbles. The bubbles, guided by the spherical guide shroud 116 and the first hemispherical filter screen 114, are directed downwards to the bottom of the treatment cylinder 201, thereby increasing the reaction time between the bubbles and the purification liquid and improving the purification effect of the exhaust gas. The conical deceleration mesh 122 on the outside of the rotating connecting rod 120 further enhances this effect. It can slow down the rising bubbles, further increasing the reaction time between the bubbles and the purification liquid. At the same time, rotating the connecting rod 120 drives the horizontal stirring rod 123 to rotate, further reducing the volume of the bubbles through stirring. The bubbles are then punctured by the horizontal spikes 124 and the vertical spikes 125, allowing the waste gas and purification liquid to react fully. Meanwhile, the conical deceleration net 122 can guide the precipitates produced by the reaction. Under the buoyancy of the rising bubbles, it can prevent the conical deceleration net 122 from becoming clogged, thus affecting the deceleration effect of the conical deceleration net 122.

[0049] Please see Figure 1 , Figures 9-11The waste gas treatment mechanism 2 includes a treatment cylinder 201, a gear protective cover 101 fixedly installed at the bottom of the treatment cylinder 201, support legs 202 fixedly installed around the bottom of the treatment cylinder 201, a drain valve 203 fixedly installed on the outer side of the bottom of the treatment cylinder 201, a second rotating motor 204 fixedly installed at the center of the top of the treatment cylinder 201, a top rotating bracket 205 fixedly connected to the output end of the second rotating motor 204, the top rotating bracket 205 being rotatably connected to the rotating connecting rod 120, a plurality of first connecting spiral blades 206 fixedly installed on the bottom outer ring of the top rotating bracket 205, a first conical guide net 207 fixedly installed at the bottom of the first connecting spiral blades 206, a plurality of second connecting spiral blades 208 fixedly installed on the bottom outer ring of the first conical guide net 207, a second conical guide net 209 fixedly installed at the bottom of the second connecting spiral blades 208, and a plurality of third connecting spiral blades 210 fixedly installed on the bottom outer ring of the second conical guide net 209. A third conical guide net 211 is fixedly installed at the bottom of the third connecting spiral blade 210. Several fourth connecting spiral blades 212 are fixedly installed on the outer ring of the bottom of the third conical guide net 211. Using the purification liquid inside the treatment cylinder 201, such as lime milk Ca(OH)2 or sodium hydroxide NaOH solution, the hydrogen fluoride gas reacts with the lime milk Ca(OH)2 or sodium hydroxide NaOH to generate calcium fluoride CaF2 precipitate or sodium fluoride, thereby achieving the effect of treating hydrogen fluoride waste gas. The second rotating motor 204 drives the top rotating support 205 and the first connecting spiral blade 206 to rotate. At the same time, the first connecting spiral blade 206 drives the first conical guide net 207, the second connecting spiral blade 208, the second conical guide net 209, the third connecting spiral blade 210, the third conical guide net 211, the fourth connecting spiral blade 212 and the bottom rotating support 213 to rotate. The rotation not only agitates the purification liquid and bubbles, but also improves the waste gas treatment effect.

[0050] Please see Figures 7-11The first conical guide net 207, the second conical guide net 209, and the third conical guide net 211 are all rotatably connected to the processing cylinder 201. The fourth connecting spiral blade 212 is fixedly installed on the top outer ring of the bottom rotating bracket 213. The rotating connecting sleeve 118 is fixedly installed on the top inner ring of the bottom rotating bracket 213. An exhaust bend 214 is fixedly installed on the top of the processing cylinder 201. A secondary purification box 215 is fixedly installed at the end of the exhaust bend 214. A top exhaust pipe 216 is fixedly installed at the top center of the secondary purification box 215. The first connecting spiral blade 206, the second connecting spiral blade 208, the third connecting spiral blade 210, and the fourth connecting spiral blade 212 are used to connect the processing cylinder 201. The fourth connecting spiral blade 212 can clean the inner wall of the treatment cylinder 201, thereby improving the purification effect of the treatment cylinder 201. The bottom rotating bracket 213 can drive the rotating connecting sleeve 118 and the second hemispherical filter screen 117 to rotate. The rotation direction of the second hemispherical filter screen 117 and the first hemispherical filter screen 114 is opposite, which can shear the bubbles, reduce the volume of the bubbles, and further improve the effect of exhaust gas treatment. The exhaust gas after preliminary treatment enters the secondary purification box 215 through the exhaust bend 214. The exhaust gas is then purified again by the corresponding purification materials inside the secondary purification box 215, further improving the exhaust gas treatment effect.

[0051] Working principle: Before using this lithium salt processing waste gas treatment device and method, it is necessary to check the overall condition of the device to ensure it can operate normally. Figure 1 - Figure 11 First, the sealing hemisphere 115 and spherical guide cover 116 at the top of the first hemispherical filter 114 guide the incoming exhaust gas. The first hemispherical filter 114 ejects the incoming exhaust gas in the form of bubbles. At the same time, the outer second hemispherical filter 117 refines the bubbles, breaking large bubbles into smaller ones, which facilitates the full reaction between the exhaust gas and the purification liquid and improves the purification effect. The one-way valve 108 at the top of the inlet connecting pipe 105 enables one-way gas flow. When backflow occurs, the elastic force of the valve extension rod 111 and the valve spring 112 engages the one-way locking ring 109 with the locking piston 113, thereby closing the one-way valve 108 and preventing backflow of gas and purification liquid, which would affect the purification effect of the exhaust gas.

[0052] Secondly, the first rotating motor 102 is started to drive the rotating main gear 103 to rotate. Utilizing the meshing connection between the rotating main gear 103 and the rotating driven gear 104, the driven gear 104 drives the air inlet connecting pipe 105 and the first hemispherical filter screen 114 to rotate. This rotation facilitates the entry of exhaust gas into the treatment cylinder 201 in the form of bubbles. The bubbles, guided by the spherical guide shroud 116 and the first hemispherical filter screen 114, enter obliquely downwards to the bottom of the treatment cylinder 201, thereby increasing the reaction time between the bubbles and the purification liquid and improving the purification effect of the exhaust gas. The rotating connecting rod 1... The conical deceleration net 122 on the outer side of 20 can decelerate the rising bubbles, further increasing the reaction time between the bubbles and the purification liquid. At the same time, rotating the connecting rod 120 drives the horizontal stirring rod 123 to rotate, further reducing the volume of the bubbles through stirring. The bubbles are then punctured by the horizontal spikes 124 and the vertical spikes 125, allowing the waste gas and purification liquid to react fully. Meanwhile, the conical deceleration net 122 can guide the precipitates produced by the reaction. Under the buoyancy of the rising bubbles, it can prevent the conical deceleration net 122 from becoming clogged, thus affecting the deceleration effect of the conical deceleration net 122.

[0053] Finally, the purification liquid inside the treatment cylinder 201, such as lime milk Ca(OH)2 or sodium hydroxide NaOH solution, reacts with the lime milk Ca(OH)2 or sodium hydroxide NaOH to generate calcium fluoride CaF2 precipitate or sodium fluoride, thereby achieving the effect of treating hydrogen fluoride waste gas. The second rotating motor 204 drives the top rotating support 205 and the first connecting spiral blade 206 to rotate. Simultaneously, the first connecting spiral blade 206 drives the first conical guide net 207, the second connecting spiral blade 208, the second conical guide net 209, the third connecting spiral blade 210, the third conical guide net 211, the fourth connecting spiral blade 212, and the bottom rotating support 213 to rotate. This rotation not only agitates the purification liquid and bubbles but also improves the treatment effect of the waste gas. The first connecting spiral blade 206, the second connecting spiral blade 208, the third connecting spiral blade 210, and the fourth connecting spiral blade 212 can clean the inner wall of the treatment cylinder 201, thereby improving the purification effect of the treatment cylinder 201. The bottom rotating bracket 213 can drive the rotating connecting sleeve 118 and the second hemispherical filter screen 117 to rotate, and the second hemispherical filter screen 117 and the first hemispherical filter screen 114 rotate in opposite directions, thereby shearing the bubbles and reducing their volume, further improving the waste gas treatment effect. The waste gas after preliminary treatment enters the secondary purification box 215 through the exhaust bend 214, and the corresponding purification materials inside the secondary purification box 215 are used to perform secondary purification of the waste gas, further improving the waste gas treatment effect.

[0054] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A lithium salt processing waste gas treatment device, comprising a bubble generating mechanism (1) and a gear protective cover (101) installed at the bottom of the bubble generating mechanism (1). The outer side of the bubble generating mechanism (1) is provided with a waste gas treatment mechanism (2), and the waste gas treatment mechanism (2) is rotatably connected to the bottom rotating bracket (213). Its features are, Also includes: The bubble generating mechanism (1) includes an air inlet connecting pipe (105), a first hemispherical filter screen (114) is fixedly installed on the outside of the air inlet connecting pipe (105), and a sealing hemisphere (115) is fixedly installed on the top of the first hemispherical filter screen (114). Among them, a spherical guide cover (116) is fixedly installed at the bottom of the sealed hemisphere (115), and a second hemisphere filter screen (117) is rotatably connected to the inner bottom of the spherical guide cover (116). Among them, a rotating connecting sleeve (118) is fixedly installed at the bottom of the second hemisphere filter (117), and a rotating groove (119) is opened on the top of the second hemisphere filter (117) near the rotating connecting sleeve (118).

2. The lithium salt processing waste gas treatment device according to claim 1, characterized in that: A one-way valve (108) is fixedly installed on the top of the air intake connection pipe (105). A one-way locking ring (109) is installed on the inner bottom side of the one-way valve (108). A valve bracket (110) is fixedly installed on the inner top side of the one-way valve (108). A valve telescopic rod (111) is fixedly installed on the bottom of the valve bracket (110). A valve spring (112) is fixedly installed on the outer side of the valve bracket (110) near the valve telescopic rod (111). A locking piston (113) is fixedly installed on the bottom of the valve telescopic rod (111) and the valve spring (112). The locking piston (113) is engaged with the one-way locking ring (109).

3. The lithium salt processing waste gas treatment device according to claim 2, characterized in that: A first rotating motor (102) is fixedly installed on one side of the bottom of the gear protective cover (101). The output end of the first rotating motor (102) is fixedly connected to a rotating main gear (103). A rotating driven gear (104) is meshed on one side of the rotating main gear (103). Both the rotating driven gear (104) and the rotating main gear (103) are rotatably connected to the gear protective cover (101). The air intake connection pipe (105) is fixedly installed inside the rotating main gear (103).

4. The lithium salt processing waste gas treatment device according to claim 3, characterized in that: The bottom of the intake connecting pipe (105) is rotatably connected to a rotating connecting pipe (106), and the bottom of the rotating connecting pipe (106) is fixedly installed with an intake bend (107). The top of the sealing hemisphere (115) is fixedly installed with a rotating connecting rod (120), and a plurality of rotating mounting rings (121) are fixedly installed on the outside of the rotating connecting rod (120). A conical deceleration net (122) is fixedly installed on the outside of the rotating mounting ring (121).

5. The lithium salt processing waste gas treatment device according to claim 4, characterized in that: The rotating connecting rod (120) is fixedly installed with several horizontal stirring rods (123) near the inner side of the conical deceleration net (122). The ends of the horizontal stirring rods (123) are fixedly installed with horizontal spikes (124), and the outer sides of the horizontal stirring rods (123) are fixedly installed with several vertical spikes (125).

6. The lithium salt processing waste gas treatment device according to claim 5, characterized in that: The exhaust gas treatment mechanism (2) includes a treatment cylinder (201), the gear protective cover (101) is fixedly installed at the bottom of the treatment cylinder (201), the support legs (202) are fixedly installed around the bottom of the treatment cylinder (201), the drain valve (203) is fixedly installed on the outer side of the bottom of the treatment cylinder (201), and the second rotating motor (204) is fixedly installed at the center of the top of the treatment cylinder (201).

7. The lithium salt processing waste gas treatment device according to claim 6, characterized in that: The output end of the second rotating motor (204) is fixedly connected to a top rotating bracket (205). The top rotating bracket (205) is rotatably connected to the rotating connecting rod (120). A plurality of first connecting spiral blades (206) are fixedly installed on the bottom outer ring of the top rotating bracket (205). A first conical guide net (207) is fixedly installed on the bottom of the first connecting spiral blades (206). A plurality of second connecting spiral blades (208) are fixedly installed on the bottom outer ring of the first conical guide net (207).

8. The lithium salt processing waste gas treatment device according to claim 7, characterized in that: A second conical guide net (209) is fixedly installed at the bottom of the second connecting spiral blade (208). A plurality of third connecting spiral blades (210) are fixedly installed on the bottom outer ring of the second conical guide net (209). A third conical guide net (211) is fixedly installed at the bottom of the third connecting spiral blade (210). A plurality of fourth connecting spiral blades (212) are fixedly installed on the bottom outer ring of the third conical guide net (211). The first conical guide net (207), the second conical guide net (209) and the third conical guide net (211) are all rotatably connected to the processing cylinder (201).

9. A lithium salt processing waste gas treatment device according to claim 8, characterized in that: The fourth connecting spiral blade (212) is fixedly installed on the top outer ring of the bottom rotating bracket (213), the rotating connecting sleeve (118) is fixedly installed on the top inner ring of the bottom rotating bracket (213), the top of the processing cylinder (201) is fixedly installed with an exhaust bend (214), the end of the exhaust bend (214) is fixedly installed with a secondary purification box (215), and the top center of the secondary purification box (215) is fixedly installed with a top exhaust pipe (216).

10. A method for treating waste gas from lithium salt processing, using the waste gas treatment device for lithium salt processing as described in claim 9, characterized in that... The processing steps are as follows: Step 1: The sealing hemisphere (115) and spherical guide cover (116) at the top of the first hemispherical filter (114) can guide the incoming exhaust gas. The first hemispherical filter (114) can spray the incoming exhaust gas out from the first hemispherical filter (114) in the form of bubbles. At the same time, the second hemispherical filter (117) on the outside can refine the bubbles, making large bubbles into small bubbles. The one-way valve (108) at the top of the air inlet connecting pipe (105) can realize the one-way flow of gas. When backflow occurs, the elastic force of the valve extension rod (111) and the valve spring (112) can make the one-way locking ring (109) engage with the locking piston (113), thereby realizing the closure of the one-way valve (108). Step Two: Start the first rotating motor (102) to drive the rotating main gear (103) to rotate. Utilizing the meshing connection between the rotating main gear (103) and the rotating driven gear (104), the rotating driven gear (104) drives the intake connecting pipe (105) and the first hemispherical filter screen (114) to rotate. This rotation facilitates the entry of exhaust gas into the treatment cylinder (201) in the form of bubbles. The bubbles pass through the spherical guide shroud (116) and the first hemispherical filter screen (114), causing them to enter the bottom of the treatment cylinder (201) at an angle. Utilizing the rotating connecting rod ( 120) The outer conical deceleration net (122) can decelerate the rising bubbles, further increasing the reaction time between the bubbles and the purification liquid. At the same time, rotating the connecting rod (120) drives the horizontal stirring rod (123) to rotate, further reducing the volume of the bubbles through stirring. The bubbles are punctured by the horizontal spikes (124) and vertical spikes (125), allowing the waste gas and purification liquid to react fully. Meanwhile, the conical deceleration net (122) can guide the precipitate produced by the reaction. At the same time, under the buoyancy of the rising bubbles, the conical deceleration net (122) can avoid clogging. Step 3: Using the purification liquid inside the treatment cylinder (201), such as lime milk (Ca(OH)2) or sodium hydroxide (NaOH) solution, the hydrogen fluoride gas reacts with the lime milk (Ca(OH)2) or sodium hydroxide (NaOH) to generate calcium fluoride (CaF2) precipitate or sodium fluoride, thereby achieving the effect of treating hydrogen fluoride waste gas. The second rotating motor (204) drives the top rotating support (205) and the first connecting spiral blade (206) to rotate. At the same time, the first connecting spiral blade (206) drives the first conical guide net (207), the second connecting spiral blade (208), the second conical guide net (209), the third connecting spiral blade (210), the third conical guide net (211), the fourth connecting spiral blade (212), and the bottom rotating support (213). The rotation not only stirs the purification liquid and bubbles, but also cleans the inner wall of the treatment cylinder (201) using the first connecting spiral blade (206), the second connecting spiral blade (208), the third connecting spiral blade (210), and the fourth connecting spiral blade (212). The bottom rotating bracket (213) drives the rotating connecting sleeve (118) and the second hemispherical filter (117) to rotate. The second hemispherical filter (117) and the first hemispherical filter (114) rotate in opposite directions, which can shear the bubbles and reduce their volume. The exhaust gas after preliminary treatment enters the secondary purification box (215) through the exhaust bend (214), and the exhaust gas is further purified by the corresponding purification materials inside the secondary purification box (215).

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