Flue gas treatment device for lithium carbonate preparation

Abstract

The invention belongs to the technical field of flue gas treatment, and particularly relates to a flue gas treatment device for lithium carbonate preparation. The treatment machine body is fixedly connected with a liquid inlet pipe; a first branch pipe and a second branch pipe are fixedly connected to the interior of the top end of the treatment machine body, and the ends, close to each other, of the first branch pipe and the second branch pipe are fixedly connected with a liquid inlet pipe. A first valve is fixedly connected to the position, close to the liquid inlet pipe, of the first branch pipe. The multiple layers of first spraying pipes and second spraying pipes are arranged to spray alkaline substances, flue gas generated in lithium carbonate preparation can be purified, the multiple second spraying pipes are closed, the multiple first spraying pipes are used for spraying, the spraying range of the alkaline substances is controlled according to different flue gas amounts, and resource waste is effectively reduced; and the rack plate and the gear are mutually meshed and rotate to drive the two shielding boxes connected to the double-threaded rod to slide relatively, so that the holes of the second uniform distribution plate are controlled to be blocked, and the purification treatment effect on a small amount of flue gas is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of flue gas treatment, in particular to a flue gas treatment device for preparing lithium carbonate. Background Art

[0002] As an important lithium resource, lithium carbonate is widely used in the electronics, battery, and pharmaceutical industries. The preparation of lithium carbonate is mainly achieved through two processes: sulfuric acid method and alkaline pressure cooking method. A large amount of flue gas will be generated during the preparation of lithium carbonate, so a flue gas treatment device will be used for purification.

[0003] A Chinese patent with announcement number CN207153352U discloses a lithium ore roasting flue gas treatment device in the process of preparing lithium carbonate by sulfuric acid method, including an air inlet pipe, a first supercharger, an electrostatic dust removal device, a filter device, a liquid dust removal device, an acid removal device, a second supercharger, a generator, a filter layer, a feed inlet, a dust removal liquid, an air guide pipe, a valve, a mixer, an alkaline liquid, and a one-way hole. This application can fully contact the flue gas with the dust removal liquid through the mixer set up.

[0004] Although the above-mentioned flue gas treatment device for preparing lithium carbonate can achieve sufficient contact between the dust removal liquid and the flue gas through the agitator, the above-mentioned flue gas treatment device has no effective resource adjustment mechanism when treating high flue gas volumes, resulting in unnecessary evaporation losses and energy waste. When treating low flue gas volumes, the device still maintains the original configuration and fails to make full use of resources, thereby causing a large amount of resource waste.

[0005] To this end, the present invention provides a flue gas treatment device for preparing lithium carbonate. Summary of the invention

[0006] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0007] The technical solution adopted by the present invention to solve its technical problems is: a flue gas treatment device for lithium carbonate preparation described in the present invention comprises a treatment body; a liquid inlet pipe is fixedly connected to the treatment body; a No. 1 branch pipe and a No. 2 branch pipe are respectively fixedly connected to the top of the treatment body, and the ends of the No. 1 branch pipe and the No. 2 branch pipe that are close to each other are fixedly connected to the liquid inlet pipe; a No. 1 valve is fixedly connected to the No. 1 branch pipe near the liquid inlet pipe; a plurality of No. 1 nozzles are fixedly connected to the end of the No. 1 branch pipe away from the liquid inlet pipe; a No. 2 valve is fixedly connected to the No. 2 branch pipe near the liquid inlet pipe; a plurality of No. 2 nozzles are fixedly connected to the end of the No. 2 branch pipe away from the liquid inlet pipe, the plurality of No. 1 nozzles are located at the center of the treatment body, and the plurality of No. 2 nozzles are respectively located on both sides of the plurality of No. 1 nozzles; the bottom outer wall of the treatment body is fixedly connected to the air inlet pipe, and the top outer wall of the treatment body is fixedly connected to the exhaust pipe.

[0008] Preferably, a No. 1 roller is rotatably connected to the inner wall of the processing body and close to the position below the No. 1 nozzle; a No. 1 uniform distribution plate is fixedly connected to the outer wall of the No. 1 roller; a No. 2 roller is rotatably connected to the inner wall of the processing body, and the No. 2 roller is arranged opposite to the No. 1 roller; a No. 2 uniform distribution plate is fixedly connected to the outer wall of the No. 2 roller; and limiting components are provided on the No. 1 roller and the No. 2 roller, and the limiting components are used to limit the rotation angles of the No. 1 roller and the No. 2 roller.

[0009] Preferably, the limiting assembly includes a turntable and a limiting rod; the turntable is fixedly connected to one end of the No. 1 roller, and the turntable is located outside the processing body; a plurality of limiting holes are provided on the processing body near the turntable; the limiting rod is inserted into the limiting hole, the limiting rod passes through the turntable, and the No. 1 elastic member is sleeved on the limiting rod.

[0010] Preferably, the inner wall of the processing body is connected to two limit plates in a relatively sliding manner near the second uniformly distributed plate; the two limit plates are fixedly connected to the outer walls of the second uniformly distributed plate, and the two baffle boxes are arranged opposite to each other, and storage cavities are opened on the opposite sides of the two baffle boxes, and a scraper is fixedly connected to the storage cavity; the outer wall of the processing body is provided with a transmission assembly, and the transmission assembly is used to drive the two baffle boxes to slide.

[0011] Preferably, the transmission assembly includes an electric cylinder No. 1, a rack plate, a double-threaded rod and a gear; the electric cylinder No. 1 is fixedly connected to the outer wall of the processing body; the rack plate is fixedly connected to the output end of the electric cylinder No. 1; the double-threaded rod is rotatably connected to the outer wall of the processing body, two opposite threads are arranged at both ends of the double-threaded rod, and two limit plates are threadedly connected to the outer wall of the double-threaded rod; a gear is fixedly connected to the middle outer wall of the double-threaded rod, and the gear and the rack plate can engage with each other.

[0012] Preferably, a No. 2 electric cylinder is fixedly connected to the top of the processing body; a sealing plate is fixedly connected to the output end of the No. 2 electric cylinder, the cross-sectional shape of the sealing plate is N-shaped, and the sealing plate is slidably connected to the inner wall of the processing body.

[0013] Preferably, a sensor is fixedly connected to the outer wall of the processing body near the No. 1 electric cylinder, the sensor is electrically connected to the No. 2 electric cylinder, and a contact point is provided on the inner wall of the sensor near the No. 1 electric cylinder; a trigger rod is slidably connected to the inner wall of the sensor near the contact point, the end of the trigger rod near the No. 1 electric cylinder is set in an arc, and a No. 2 elastic part is fixedly connected between the trigger rod and the sensor.

[0014] Preferably, the bottom end of the No. 1 branch pipe is fixedly connected to the No. 1 shunt pipe; the end of the No. 1 shunt pipe away from the No. 1 branch pipe is fixedly connected to the No. 1 injection plate; and the No. 1 shunt pipe is fixedly connected to the No. 1 solenoid valve.

[0015] Preferably, a No. 2 diverter pipe is fixedly connected to the two No. 1 nozzles; a No. 2 injection plate is fixedly connected to one end of the No. 2 diverter pipe away from the No. 1 nozzle; and a No. 2 solenoid valve is fixedly connected to the No. 2 diverter pipe.

[0016] Preferably, the end of the air inlet pipe away from the processing body is fixedly connected to a No. 1 heat pipe; the outer wall of the No. 1 heat pipe is fixedly connected to a heat conductive plate; the end of the heat conductive plate away from the No. 1 heat pipe is fixedly connected to a No. 2 heat pipe, and the No. 2 heat conductive pipe is sleeved on the liquid inlet pipe.

[0017] The beneficial effects of the present invention are as follows:

[0018] 1. The flue gas treatment device for lithium carbonate preparation described in the present invention can purify the flue gas generated by the lithium carbonate preparation by setting up multiple layers of No. 1 nozzles and No. 2 nozzles to spray alkaline substances. It relies on closing multiple No. 2 nozzles and using multiple No. 1 nozzles for spraying, so as to control the range of spraying alkaline substances according to different flue gas volumes, effectively reducing the waste of resources. The rack plate and the gear mesh and rotate with each other, driving the two baffle boxes connected to the double-threaded rod to slide relative to each other, thereby realizing the controlled blocking of the holes of the No. 2 uniformly distributed plate, and improving the purification treatment effect of a small amount of flue gas.

[0019] 2. The flue gas treatment device for the preparation of lithium carbonate described in the present invention drives the sealing plate to be inserted into the interior of the treatment body through the output end of the No. 2 electric cylinder. The space inside the treatment body can be controlled to be smaller in cooperation with two shielding boxes, thereby improving the treatment effect on the flue gas. The sensor is triggered to control the No. 2 electric cylinder to drive the sealing plate to move, thereby controlling the No. 2 electric cylinder. The No. 1 injection plate and the No. 2 injection plate are respectively installed on both sides of the inner wall of the treatment body, thereby controlling the flushing and impurity removal of the outer walls of the No. 1 uniformly distributed plate and the No. 2 uniformly distributed plate. The No. 1 heat conduction pipe absorbs the heat of the flue gas and conducts it to the liquid inlet pipe, thereby heating the pumped alkaline substance and accelerating the purification reaction of the flue gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further described below in conjunction with the accompanying drawings.

[0021] Figure 1 is a stereogram of the present invention;

[0022] Figure 2 It is a schematic diagram of the structure of the double threaded rod in the present invention;

[0023] Figure 3 It is a structural schematic diagram of the blocking plate in the present invention;

[0024] Figure 4 It is a structural schematic diagram of the shielding box in the present invention;

[0025] Figure 5 It is a structural schematic diagram of a No. 1 uniform distribution plate in the present invention.

[0026] In the figure: 1, treatment body; 11, liquid inlet pipe; 12, branch pipe No. 1; 13, valve No. 1; 14, nozzle No. 1; 15, branch pipe No. 2; 16, valve No. 2; 17, nozzle No. 2; 18, air inlet pipe; 2, roller No. 1; 21, uniform distribution plate No. 1; 22, roller No. 2; 23, uniform distribution plate No. 2; 3, turntable; 31, limit rod; 4, limit plate; 41, shielding box; 5. No. 1 electric cylinder; 51. Rack plate; 52. Double threaded rod; 53. Gear; 6. No. 2 electric cylinder; 61. Sealing plate; 7. Sensor; 71. Trigger rod; 8. No. 1 shunt pipe; 81. No. 1 injection plate; 82. No. 1 solenoid valve; 9. No. 2 shunt pipe; 91. No. 2 injection plate; 92. No. 2 solenoid valve; 93. No. 1 heat pipe; 94. Heat transfer plate; 95. No. 2 heat pipe. DETAILED DESCRIPTION

[0027] 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 explained below in conjunction with specific implementation methods.

[0028] like Figures 1 to 3 , Figure 5As shown, a flue gas treatment device for lithium carbonate preparation according to an embodiment of the present invention comprises a treatment body 1; a liquid inlet pipe 11 is fixedly connected to the treatment body 1; a No. 1 branch pipe 12 and a No. 2 branch pipe 15 are fixedly connected to the top of the treatment body 1, and the ends of the No. 1 branch pipe 12 and the No. 2 branch pipe 15 close to each other are fixedly connected to the liquid inlet pipe 11; a No. 1 valve 13 is fixedly connected to the No. 1 branch pipe 12 near the liquid inlet pipe 11; a plurality of No. 1 nozzles 14 are fixedly connected to the end of the No. 1 branch pipe 12 away from the liquid inlet pipe 11; A No. 2 valve 16 is fixedly connected to the No. 2 branch pipe 15 near the liquid inlet pipe 11; a plurality of No. 2 nozzles 17 are fixedly connected to one end of the No. 2 branch pipe 15 away from the liquid inlet pipe 11, a plurality of No. 1 nozzles 14 are located at the center of the processing body 1, and the plurality of No. 2 nozzles 17 are respectively located on both sides of the plurality of No. 1 nozzles 14; an air inlet pipe 18 is fixedly connected to the outer wall of the bottom end of the processing body 1, and an exhaust pipe is fixedly connected to the outer wall of the top end of the processing body 1; in the process of treating the flue gas generated by the preparation of lithium carbonate, the flue gas contains sulfur dioxide and nitrogen oxides, When treating a large amount of flue gas, the flue gas is first passed into the air inlet pipe 18 for desulfurization and purification, and then sent into the interior of the treatment body 1 by the air inlet pipe 18. The liquid inlet pipe 11 is externally connected to a pumping device, and the pumping device extracts alkaline substances for spraying. The alkaline substances can be limestone slurry or reducing agent ammonia water. The alkaline substances are pumped into the liquid inlet pipe 11, and the No. 1 valve 13 and the No. 2 valve 16 are opened at the same time. Then, the alkaline substances are sent into the No. 1 branch pipe 12 and the No. 2 branch pipe 15. Multiple No. 1 nozzles 14 and No. 2 nozzles 17 are distributed on multiple layers for spraying. Each layer is composed of two middle No. 1 nozzles 14 and two No. 2 nozzles 17 on both sides, so that the alkaline substance reacts with sulfur dioxide and nitrogen oxides for purification. When a small amount of flue gas is treated, the No. 1 valve 13 is opened and the No. 2 valve 16 is closed, and the alkaline substance is pumped into the liquid inlet pipe 11 and sent into the No. 1 branch pipe 12. Multiple No. 1 nozzles 14 are located at the inner center of the treatment body 1 to spray the alkaline substance, so that a small amount of flue gas can be purified, and the range of spraying the alkaline substance can be controlled according to different flue gas volumes, which effectively reduces the waste of resources.

[0029] like Figures 1 to 5As shown, the inner wall of the processing body 1 is rotatably connected to the position below the No. 1 nozzle 14 with a No. 1 rotating roller 2; the outer wall of the No. 1 rotating roller 2 is fixedly connected to a No. 1 uniform distribution plate 21; the inner wall of the processing body 1 is rotatably connected to the No. 2 rotating roller 22, and the No. 2 rotating roller 22 is arranged opposite to the No. 1 rotating roller 2; the outer wall of the No. 2 rotating roller 22 is fixedly connected to the No. 2 uniform distribution plate 23; the No. 1 rotating roller 2 and the No. 2 rotating roller 22 are both provided with a limiting component, and the limiting component is used to limit the rotation angle of the No. 1 rotating roller 2 and the No. 2 rotating roller 22; when spraying alkaline substances in the flue gas for reaction purification, a The No. 1 roller 2 cooperates with the No. 1 uniform distribution plate 21, and the No. 2 roller 22 cooperates with the No. 2 uniform distribution plate 23 to be rotatably connected to the bottom position of the inner wall of the processing body 1. The No. 1 uniform distribution plate 21 and the No. 2 uniform distribution plate 23 can be switched to be placed horizontally below the No. 1 nozzle 14, and the No. 1 uniform distribution plate 21 or the No. 2 uniform distribution plate 23 is fixed by a limiting component. The No. 1 uniform distribution plate 21 and the No. 2 uniform distribution plate 23 are switched for use according to the cleanliness of the surface of the No. 1 uniform distribution plate 21 and the No. 2 uniform distribution plate 23. The flue gas can be evenly dispersed when passing through the No. 1 uniform distribution plate 21 or the No. 2 uniform distribution plate 23, thereby improving the effect of purifying the contact between the flue gas and the alkaline substances.

[0030] The limiting assembly includes a turntable 3 and a limiting rod 31; the turntable 3 is fixedly connected to one end of the No. 1 rotating roller 2, and the turntable 3 is located outside the processing body 1; a plurality of limiting holes are arranged on the processing body 1 near the turntable 3; the limiting rod 31 is inserted into the limiting hole, the limiting rod 31 passes through the turntable 3, and a No. 1 elastic member is sleeved on the limiting rod 31; when the No. 1 uniform distribution plate 21 or the No. 2 uniform distribution plate 23 is limited in a fixed direction, for example, the No. 1 uniform distribution plate 21 or the No. 2 uniform distribution plate 23 is The initial position of the plate 21 is vertical. After the limit rod 31 is pulled out of the limit hole of the processing body 1, the No. 1 elastic member is stretched and stressed, and the turntable 3 is held and rotated. After the No. 1 roller 2 is rotated to the horizontal direction, the limit rod 31 is pulled by the elastic force of the No. 1 elastic member to pass through the turntable 3 and insert it into another limit hole, so as to limit the No. 1 uniformly distributed plate 21, and the No. 2 uniformly distributed plate 23 is changed from horizontal to vertical limit, so as to achieve the effect of switching between the No. 1 uniformly distributed plate 21 and the No. 2 uniformly distributed plate 23.

[0031] like Figures 1 to 4As shown, the inner wall of the processing body 1 is relatively slidably connected to two limit plates 4 near the No. 2 uniformly distributed plate 23; the two limit plates 4 are fixedly connected to the outer wall of the No. 2 uniformly distributed plate 23, and the two baffle boxes 41 are relatively arranged, and the two baffle boxes 41 are provided with storage cavities on the opposite sides, and the storage cavities are fixedly connected with scrapers; the outer wall of the processing body 1 is provided with a transmission assembly, and the transmission assembly is used to drive the two baffle boxes 41 to slide; when multiple No. 1 nozzles 14 are used to spray alkaline substances and react with a small amount of flue gas, the multiple No. 2 nozzles 17 are in an inactive state at this time, and the transmission assembly drives the two limit plates 4 to slide closer to each other, and synchronously drives the two baffle boxes 41 to move closer to each other, and the two baffle boxes 41 respectively block one quarter of the two sides of the No. 2 uniformly distributed plate 23, so that the multiple No. 2 nozzles 17 are in an inactive state. The spraying range at the tube 17 is blocked, and two-quarters of the hole is reserved in the middle of the No. 2 uniform distribution plate 23 for multiple No. 1 nozzles 14 to spray alkaline substances for reaction. The flue gas passes through the middle of the No. 2 uniform distribution plate 23 for reaction. When reacting to a large amount of flue gas, multiple No. 1 nozzles 14 and No. 2 nozzles 17 are opened at the same time, and the No. 2 uniform distribution plate 23 is also in a fully open state, which plays a role in shielding the No. 2 uniform distribution plate 23 according to different flue gas volumes. At the same time, when there are impurities generated by the reaction on the No. 2 uniform distribution plate 23, the transmission assembly is used to drive the two shielding boxes 41 to slide close to each other, and the scrapers on the two shielding boxes 41 can fit the surface of the No. 2 uniform distribution plate 23 until the two scrapers fit, and the impurities on the surface of the No. 2 uniform distribution plate 23 are collected in the two storage chambers, which plays a role in cleaning the impurities on the surface of the No. 2 uniform distribution plate 23.

[0032] The transmission assembly includes a No. 1 electric cylinder 5, a rack plate 51, a double-threaded rod 52 and a gear 53; the No. 1 electric cylinder 5 is fixedly connected to the outer wall of the processing body 1; the rack plate 51 is fixedly connected to the output end of the No. 1 electric cylinder 5; the double-threaded rod 52 is rotatably connected to the outer wall of the processing body 1, and two opposite threads are arranged at both ends of the double-threaded rod 52, and two limit plates 4 are threadedly connected to the outer wall of the double-threaded rod 52; the middle outer wall of the double-threaded rod 52 is fixedly connected with a gear 53, and the gear 53 and the rack plate 51 can mesh with each other. When the two shielding boxes 41 are controlled to slide, the output end of the No. 1 electric cylinder 5 retracts and drives the rack plate 51 to slide down, and the rack plate 51 engages with the gear 53 to rotate, and the gear 53 synchronously drives the double-threaded rod 52 to rotate on the processing body 1, and the two limit plates 4 threadedly connected at both ends of the double-threaded rod 52 rotate synchronously. Since the threads at both ends of the double-threaded rod 52 are set in opposite directions, the shielding boxes 41 on the two limit plates 4 are driven to slide relative to each other when the double-threaded rod 52 rotates, thereby controlling the sliding of the two shielding boxes 41.

[0033] like Figures 1 to 3As shown, a No. 2 electric cylinder 6 is fixedly connected to the top of the processing body 1; a sealing plate 61 is fixedly connected to the output end of the No. 2 electric cylinder 6, the cross-sectional shape of the sealing plate 61 is n-shaped, and the sealing plate 61 is slidably connected to the inner wall of the processing body 1; when a small amount of flue gas is sprayed with alkaline substances to react, the output end of the No. 2 electric cylinder 6 is used to drive the sealing plate 61 to retract, and the n-shaped sealing plate 61 is inserted into the interior of the processing body 1, which can separate the upper position of the No. 2 uniformly distributed plate 23 inside the processing body 1, and the sealing plate 61 blocks the spraying range of the two No. 1 nozzles 14, and cooperates with the two shielding boxes 41 to block the holes of the No. 2 uniformly distributed plate 23, thereby realizing the effect of controlling and reducing the reaction space inside the processing body 1, and improving the treatment effect of the flue gas generated by the preparation of lithium carbonate.

[0034] like Figures 1 to 4 As shown, a sensor 7 is fixedly connected to the outer wall of the processing body 1 near the No. 1 electric cylinder 5, the sensor 7 is electrically connected to the No. 2 electric cylinder 6, and a contact point is set on the inner wall of the sensor 7 near the No. 1 electric cylinder 5; a trigger rod 71 is slidably connected to the inner wall of the sensor 7 near the contact point, the end of the trigger rod 71 near the No. 1 electric cylinder 5 is set as an arc, and a No. 2 elastic member is fixedly connected between the trigger rod 71 and the sensor 7; when the space control of the alkaline substance spraying reaction is reduced, the output end of the No. 1 electric cylinder 5 drives the rack plate 51 to retract half, so that the two shielding boxes 41 are close to each other and half-sealed The hole of the No. 2 uniform distribution plate 23 is blocked, the rack plate 51 squeezes one end of the arc of the trigger rod 71 to slide, the No. 2 elastic part contracts, and the trigger rod 71 slides into the interior of the sensor 7 to continuously squeeze the trigger contact point. After the sensor 7 is squeezed and triggered, it sends a signal to the main controller, and the main controller sends a signal to the No. 2 electric cylinder 6 to retract until the blocking plate 61 cooperates with the shielding box 41 to block the internal space of the processing body 1, thereby achieving the effect of controlling the reduction of the alkaline substance spraying reaction space. When the output end of the No. 1 electric cylinder 5 is reset, the No. 2 elastic part is reset to push out the trigger rod 71, and the two shielding boxes 41 are reset.

[0035] like Figures 1 to 3 , Figure 5 As shown, the bottom end of the No. 1 branch pipe 12 is fixedly connected to the No. 1 shunt pipe 8; one end of the No. 1 shunt pipe 8 away from the No. 1 branch pipe 12 is fixedly connected to the No. 1 injection plate 81; the No. 1 shunt pipe 8 is fixedly connected to the No. 1 solenoid valve 82; when a large amount of impurities are attached to the outer wall of the No. 1 uniform plate 21, the No. 1 uniform plate 21 is adjusted to stand upright on the inner wall of the processing body 1, and alkaline substances are pumped into the No. 1 branch pipe 12, and the No. 1 solenoid valve 82 is controlled to open, and the alkaline substances then reach the No. 1 shunt pipe 8 from the inside of the No. 1 branch pipe 12, and are finally sprayed from the No. 1 injection plate 81 to flush the impurities on the surface of the No. 1 uniform plate 21, thereby flushing and removing impurities from the surface of the No. 1 uniform plate 21. At the same time, when there is no need to flush the No. 1 uniform plate 21, the No. 1 solenoid valve 82 can be in a normally closed state.

[0036] A No. 2 diverter pipe 9 is fixedly connected to the two No. 1 nozzles 14; a No. 2 injection plate 91 is fixedly connected to the end of the No. 2 diverter pipe 9 away from the No. 1 nozzle 14; a No. 2 solenoid valve 92 is fixedly connected to the No. 2 diverter pipe 9; when cleaning impurities on the surface of the No. 2 uniform distribution plate 23, the No. 2 diverter pipe 9 is fixed to the end of the two No. 1 nozzles 14 away from the No. 1 branch pipe 12, and the No. 2 solenoid valve 92 in a normally closed state is controlled to open, and the alkaline substances inside the two No. 1 nozzles 14 are sent into the No. 2 diverter pipe 9, and then the No. 2 injection plate 91 is aimed at the surface of the upright No. 2 uniform distribution plate 23 to flush, thereby cleaning impurities on the surface of the No. 2 uniform distribution plate 23.

[0037] The end of the air inlet pipe 18 away from the processing body 1 is fixedly connected to the No. 1 heat conducting pipe 93; the outer wall of the No. 1 heat conducting pipe 93 is fixedly connected to the No. 2 heat conducting pipe 95; the end of the heat conducting plate 94 away from the No. 1 heat conducting pipe 93 is fixedly connected to the No. 2 heat conducting pipe 95, and the No. 2 heat conducting pipe 95 is sleeved on the liquid inlet pipe 11; before the flue gas with heat is sent into the processing body 1, the No. 1 heat conducting pipe 93 is installed at the front end of the air inlet pipe 18 to absorb the heat of the flue gas, and the absorbed heat is transferred to the No. 2 heat conducting pipe 95 through the heat conducting plate 94, and the No. 2 heat conducting pipe 95 heats the alkaline substance pumped into the liquid inlet pipe 11, and then it is sprayed by multiple No. 1 nozzles 14 and No. 2 nozzles 17. The heated alkaline substance can accelerate the flue gas purification reaction, thereby improving the purification effect. At the same time, the heated alkaline substance can effectively dissolve viscous substances and has a good cleaning effect.

[0038] Working process: In the process of treating the flue gas generated by the preparation of lithium carbonate, the flue gas contains sulfur dioxide and nitrogen oxides. When treating a large amount of flue gas, the flue gas is first passed into the air inlet pipe 18 for desulfurization and purification, and then sent into the interior of the treatment body 1 by the air inlet pipe 18. The liquid inlet pipe 11 is externally connected to a pumping device, and the pumping device extracts alkaline substances for spraying. The alkaline substances can be limestone slurry or reducing agent ammonia water. The alkaline substances are pumped into the liquid inlet pipe 11, and the No. 1 valve 13 and the No. 2 valve 16 are opened at the same time. Then, the alkaline substances are sent into the No. 1 branch pipe 12 and the No. 2 branch pipe 15. Multiple No. 1 spray pipes are connected to the No. 1 branch pipe 12 and the No. 2 branch pipe 15. The pipe 14 and the No. 2 nozzle 17 are distributed in multiple layers for spraying at the same time. Each layer is composed of two middle No. 1 nozzles 14 and two No. 2 nozzles 17 on both sides, so that the alkaline substance reacts with sulfur dioxide and nitrogen oxides for purification. When a small amount of flue gas is treated, the No. 1 valve 13 is opened and the No. 2 valve 16 is closed, and the alkaline substance is pumped into the liquid inlet pipe 11 and sent into the No. 1 branch pipe 12. Multiple No. 1 nozzles 14 are located at the inner center of the treatment body 1 to spray the alkaline substance, so that a small amount of flue gas is purified, and the range of spraying the alkaline substance is controlled according to different flue gas volumes, which effectively reduces the waste of resources. When the alkaline substance is sprayed in the flue gas for reaction purification, the No. 1 rotating roller 2 cooperates with the No. 1 uniform distribution plate 21 and the No. 2 rotating roller 22 cooperates with the No. 2 uniform distribution plate 23 to be rotatably connected to the bottom position of the inner wall of the processing body 1, and the No. 1 uniform distribution plate 21 and the No. 2 uniform distribution plate 23 can be switched to be placed horizontally below the No. 1 nozzle 14, and the No. 1 uniform distribution plate 21 or the No. 2 uniform distribution plate 23 is fixed by the limiting component, and the No. 1 uniform distribution plate 21 and the No. 2 uniform distribution plate 23 are switched according to the cleanliness of the surface of the No. 1 uniform distribution plate 21 and the No. 2 uniform distribution plate 23. When the flue gas passes through the No. 1 uniform distribution plate 21 or the No. 2 uniform distribution plate 23, it can be evenly dispersed, thereby improving The effect of purifying the flue gas in contact with alkaline substances; when the fixed direction of the No. 1 uniformly distributed plate 21 or the No. 2 uniformly distributed plate 23 is limited, for example, the initial position of the No. 1 uniformly distributed plate 21 is vertical, after the limit rod 31 is pulled out of the limit hole of the processing body 1, the No. 1 elastic member is stretched and stressed, and the turntable 3 is held and rotated. After the No. 1 roller 2 is rotated to the horizontal direction, the limit rod 31 is pulled by the elastic force of the No. 1 elastic member to penetrate the turntable 3 and insert it into another limit hole, and the No. 1 uniformly distributed plate 21 is limited, and the No. 2 uniformly distributed plate 23 is changed from horizontal to vertical limit, so as to achieve the effect of switching the use of the No. 1 uniformly distributed plate 21 and the No. 2 uniformly distributed plate 23;

[0039] When multiple No. 1 nozzles 14 are used to spray alkaline substances to react with a small amount of flue gas, multiple No. 2 nozzles 17 are in an inactive state at this time, and the transmission component drives the two limit plates 4 to slide closer to each other, and simultaneously drives the two shielding boxes 41 to move closer to each other, and the two shielding boxes 41 respectively block one-fourth of the two sides of the No. 2 uniformly distributed plate 23, so as to block the spraying range of multiple No. 2 nozzles 17, and leave two-quarters of the hole in the middle of the No. 2 uniformly distributed plate 23 for multiple No. 1 nozzles 14 to spray alkaline substances to react, and the flue gas passes through the middle of the No. 2 uniformly distributed plate 23 to react. When reacting to a large amount of flue gas, multiple No. 1 nozzles 14 and No. 2 nozzles 17 are opened at the same time, and the No. 2 uniformly distributed plate 23 is also in a fully open state, which plays a role in shielding the No. 2 uniformly distributed plate 23 according to different flue gas volumes. The second uniformly distributed plate 23 has the function of removing impurities from the surface of the second uniformly distributed plate 23. At the same time, when there are impurities generated by the reaction on the second uniformly distributed plate 23, the transmission assembly is used to drive the two shielding boxes 41 to slide close to each other, and the scrapers on the two shielding boxes 41 can fit the surface of the second uniformly distributed plate 23 until the two scrapers fit together, and the impurities on the surface of the second uniformly distributed plate 23 are collected in the two storage chambers, which plays a role in cleaning the impurities on the surface of the second uniformly distributed plate 23; when the two shielding boxes 41 are controlled to slide, the output end of the No. 1 electric cylinder 5 retracts and drives the rack plate 51 to slide down, and the rack plate 51 meshes with the gear 53 to rotate, and the gear 53 synchronously drives the double-threaded rod 52 to rotate on the processing body 1, and the two limit plates 4 threadedly connected at both ends of the double-threaded rod 52 rotate synchronously. The threads at both ends of the rod 52 are arranged in opposite directions, so that when the double-threaded rod 52 rotates, the shielding boxes 41 on the two limit plates 4 are driven to slide relative to each other, thereby controlling the sliding of the two shielding boxes 41; when a small amount of flue gas is sprayed with alkaline substances, the output end of the No. 2 electric cylinder 6 is used to drive the blocking plate 61 to retract, and the N-shaped blocking plate 61 is inserted into the interior of the processing body 1, which can separate the upper position of the No. 2 uniformly distributed plate 23 inside the processing body 1, and the blocking plate 61 blocks the spraying range of the two No. 1 nozzles 14, and cooperates with the two shielding boxes 41 to block the holes of the No. 2 uniformly distributed plate 23, so as to achieve the effect of controlling the reduction of the reaction space inside the processing body 1, thereby improving the treatment effect of the flue gas generated by the preparation of lithium carbonate; when the alkaline substances are sprayed When the space control of the spraying reaction is reduced, the output end of the No. 1 electric cylinder 5 drives the rack plate 51 to retract half, so that the two shielding boxes 41 are close to each other to half-block the holes of the No. 2 uniformly distributed plate 23, and the rack plate 51 squeezes one end of the arc of the trigger rod 71 to slide, and the No. 2 elastic member contracts, and the trigger rod 71 slides into the interior of the sensor 7 and continuously squeezes the trigger contact point. After the sensor 7 is squeezed and triggered, it sends a signal to the main controller, and the main controller sends a signal to the No. 2 electric cylinder 6 to retract until the blocking plate 61 cooperates with the shielding box 41 to block the internal space of the processing body 1, so as to achieve the effect of controlling the reduction of the alkaline substance spraying reaction space. When the output end of the No. 1 electric cylinder 5 is reset, the No. 2 elastic member is reset to push out the trigger rod 71, and the two shielding boxes 41 are reset;

[0040] When a large amount of impurities are attached to the outer wall of the No. 1 uniformly distributed plate 21, the No. 1 uniformly distributed plate 21 is adjusted to stand upright on the inner wall of the processing body 1, and the alkaline substance is pumped into the No. 1 branch pipe 12. The No. 1 solenoid valve 82 is controlled to open, and the alkaline substance then reaches the No. 1 branch pipe 8 from the inside of the No. 1 branch pipe 12, and is finally sprayed from the No. 1 injection plate 81 to wash away the impurities on the surface of the No. 1 uniformly distributed plate 21, thereby washing and removing impurities on the surface of the No. 1 uniformly distributed plate 21. At the same time, when there is no need to wash the No. 1 uniformly distributed plate 21, the No. 1 uniformly distributed plate 21 is washed away. 1, the No. 1 solenoid valve 82 is in a normally closed state; when cleaning the impurities on the surface of the No. 2 uniform distribution plate 23, the No. 2 shunt pipe 9 is fixed to the end of the two No. 1 nozzles 14 away from the No. 1 branch pipe 12, and the No. 2 solenoid valve 92 in a normally closed state is controlled to open, and the alkaline substances inside the two No. 1 nozzles 14 are sent into the No. 2 shunt pipe 9, and then the No. 2 injection plate 91 is aligned with the surface of the erected No. 2 uniform distribution plate 23 to flush, thereby playing the role of cleaning the impurities on the surface of the No. 2 uniform distribution plate 23;

[0041] Before the hot flue gas is sent into the processing body 1, the No. 1 heat pipe 93 is installed at the front end of the air inlet pipe 18 to absorb the heat of the flue gas, and the absorbed heat is transferred to the No. 2 heat pipe 95 through the heat conduction plate 94. The No. 2 heat pipe 95 heats the alkaline substance pumped into the liquid inlet pipe 11, and then sprays it from multiple No. 1 nozzles 14 and No. 2 nozzles 17. The heated alkaline substance can accelerate the flue gas purification reaction, thereby improving the purification effect. At the same time, the heated alkaline substance can effectively dissolve viscous substances and has a better cleaning effect.

[0042] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A flue gas treatment device for lithium carbonate preparation, characterized in that: The invention comprises a processing body (1); a liquid inlet pipe (11) is fixedly connected to the processing body (1); a first branch pipe (12) and a second branch pipe (15) are respectively fixedly connected to the top of the processing body (1), and the ends of the first branch pipe (12) and the second branch pipe (15) close to each other are fixedly connected to the liquid inlet pipe (11); a first valve (13) is fixedly connected to the first branch pipe (12) near the liquid inlet pipe (11); a plurality of first nozzles (13) are fixedly connected to the end of the first branch pipe (12) away from the liquid inlet pipe (11); 14); a No. 2 valve (16) is fixedly connected to the No. 2 branch pipe (15) near the liquid inlet pipe (11); a plurality of No. 2 nozzles (17) are fixedly connected to one end of the No. 2 branch pipe (15) away from the liquid inlet pipe (11); the plurality of No. 1 nozzles (14) are located at the center of the processing body (1), and the plurality of No. 2 nozzles (17) are respectively located on both sides of the plurality of No. 1 nozzles (14); an air inlet pipe (18) is fixedly connected to the outer wall of the bottom end of the processing body (1), and an exhaust pipe is fixedly connected to the outer wall of the top end of the processing body (1).

2. A flue gas treatment device for lithium carbonate preparation according to claim 1, characterized in that: A No. 1 rotating roller (2) is rotatably connected to the inner wall of the processing body (1) and close to the position below the No. 1 nozzle (14); a No. 1 uniform distribution plate (21) is fixedly connected to the outer wall of the No. 1 rotating roller (22); a No. 2 rotating roller (22) is rotatably connected to the inner wall of the processing body (1), and the No. 2 rotating roller (22) is arranged opposite to the No. 1 rotating roller (2); a No. 2 uniform distribution plate (23) is fixedly connected to the outer wall of the No. 2 rotating roller (22); and a limiting component is provided on both the No. 1 rotating roller (2) and the No. 2 rotating roller (22), and the limiting component is used to limit the rotation angle of the No. 1 rotating roller (2) and the No. 2 rotating roller (22).

3. A flue gas treatment device for lithium carbonate preparation according to claim 2, characterized in that: The limiting assembly comprises a rotating disk (3) and a limiting rod (31); the rotating disk (3) is fixedly connected to one end of a No. 1 rotating roller (2), and the rotating disk (3) is located outside the processing machine body (1); a plurality of limiting holes are provided on the processing machine body (1) near the rotating disk (3); the limiting rod (31) is inserted into the limiting holes, the limiting rod (31) passes through the rotating disk (3), and a No. 1 elastic member is sleeved on the limiting rod (31).

4. A flue gas treatment device for lithium carbonate preparation according to claim 2, characterized in that: The inner wall of the processing body (1) is connected to two limit plates (4) in a relatively slidable manner near the second uniformly distributed plate (23); the two limit plates (4) are fixedly connected to the outer wall of the second uniformly distributed plate (23), and the two block boxes (41) are arranged opposite to each other, and storage cavities are provided on opposite sides of the two block boxes (41), and a scraper is fixedly connected to the storage cavity; the outer wall of the processing body (1) is provided with a transmission assembly, and the transmission assembly is used to drive the two block boxes (41) to slide.

5. A flue gas treatment device for lithium carbonate preparation according to claim 4, characterized in that: The transmission assembly comprises a No. 1 electric cylinder (5), a rack plate (51), a double-threaded rod (52) and a gear (53); the No. 1 electric cylinder (5) is fixedly connected to the outer wall of the processing body (1); the rack plate (51) is fixedly connected to the output end of the No. 1 electric cylinder (5); the double-threaded rod (52) is rotatably connected to the outer wall of the processing body (1), two opposite threads are arranged at both ends of the double-threaded rod (52), and two limit plates (4) are threadedly connected to the outer wall of the double-threaded rod (52); a gear (53) is fixedly connected to the middle outer wall of the double-threaded rod (52), and the gear (53) and the rack plate (51) can mesh with each other.

6. A flue gas treatment device for lithium carbonate preparation according to claim 5, characterized in that: A No. 2 electric cylinder (6) is fixedly connected to the top of the processing body (1); a sealing plate (61) is fixedly connected to the output end of the No. 2 electric cylinder (6); the sealing plate (61) has an N-shaped cross-section, and the sealing plate (61) is slidably connected to the inner wall of the processing body (1).

7. A flue gas treatment device for lithium carbonate preparation according to claim 6, characterized in that: A sensor (7) is fixedly connected to the outer wall of the processing body (1) near the No. 1 electric cylinder (5), the sensor (7) is electrically connected to the No. 2 electric cylinder (6), and a contact point is arranged on the inner wall of the sensor (7) near the No. 1 electric cylinder (5); a trigger rod (71) is slidably connected to the inner wall of the sensor (7) near the contact point, the end of the trigger rod (71) near the No. 1 electric cylinder (5) is arranged in an arc shape, and a No. 2 elastic member is fixedly connected between the trigger rod (71) and the sensor (7).

8. A flue gas treatment device for lithium carbonate preparation according to claim 1, characterized in that: The bottom end of the No. 1 branch pipe (12) is fixedly connected to a No. 1 shunt pipe (8); one end of the No. 1 shunt pipe (8) away from the No. 1 branch pipe (12) is fixedly connected to a No. 1 injection plate (81); and the No. 1 shunt pipe (8) is fixedly connected to a No. 1 solenoid valve (82).

9. A flue gas treatment device for lithium carbonate preparation according to claim 1, characterized in that: A No. 2 diverter pipe (9) is fixedly connected to the two No. 1 nozzles (14); a No. 2 injection plate (91) is fixedly connected to one end of the No. 2 diverter pipe (9) away from the No. 1 nozzle (14); and a No. 2 solenoid valve (92) is fixedly connected to the No. 2 diverter pipe (9).

10. A flue gas treatment device for lithium carbonate preparation according to claim 1, characterized in that: The end of the air inlet pipe (18) away from the processing body (1) is fixedly connected to a first heat conducting pipe (93); the outer wall of the first heat conducting pipe (93) is fixedly connected to a heat conducting plate (94); the end of the heat conducting plate (94) away from the first heat conducting pipe (93) is fixedly connected to a second heat conducting pipe (95), and the second heat conducting pipe (95) is sleeved on the liquid inlet pipe (11).

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