Phosphoric acid deep arsenic removal device and arsenic removal process thereof

Abstract

The invention discloses a deep arsenic removal device for phosphoric acid and an arsenic removal process thereof, and relates to the technical field of efficient arsenic removal in phosphoric acid, the deep arsenic removal device comprises an automatic feeding continuous arsenic removal reactor, under the cooperation of a temperature control heating assembly, an arsenic biosensor, a material removal driving motor, a rotating rod, a drying rake blade and a heat conduction rod, the position of a microwave heating source is adjusted, and the arsenic removal efficiency is improved. The microwave heating is more accurate through the intelligent control of the microwave power, and the microwave heating is combined with the internal drying rake blade stirring system, so that the heating efficiency of the material is improved, the uniform mixing of the material is promoted, the temperature change of different areas in the automatic feeding continuous arsenic removal reactor can be adapted, and the continuous arsenic removal effect is improved. According to the technical scheme, the uniformity and controllability of reaction conditions are guaranteed, the heat conduction rods arranged in an array mode can quickly respond to temperature changes, uniform distribution of heat is achieved, local overheating is avoided, meanwhile, the heat conduction path can be flexibly adjusted according to requirements, and the temperature uniformity in the automatic feeding continuous arsenic removal reactor is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of efficient arsenic removal in phosphoric acid, and in particular to a phosphoric acid deep arsenic removal device and a arsenic removal process thereof. Background Art

[0002] Arsenic and phosphorus are common and difficult to remove key impurities in various phosphorus chemical products. Deep arsenic removal is of great significance to improving the refinement level of wet-process phosphoric acid and more effectively utilizing low-grade phosphorus resources. In wet-process phosphoric acid, arsenic mostly exists in the form of arsenic acid and arsenous acid; in the laboratory, chemical precipitation, crystallization, ion exchange resin, electrodialysis and other methods are mainly used for arsenic removal; in actual industrial production, chemical precipitation is mainly used for arsenic removal.

[0003] However, in the prior art, during the deep arsenic removal operation in phosphoric acid, although the appropriate temperature can accelerate the precipitation or adsorption process of arsenic compounds, too high or too low temperature will reduce the arsenic removal efficiency, and the gas generated during the arsenic removal cannot be well utilized, resulting in low purity and easily affected quantity of subsequent arsenic removal. Therefore, it is necessary to propose a deep arsenic removal device for phosphoric acid and a arsenic removal process thereof. Summary of the invention

[0004] The object of the present invention is to provide a deep arsenic removal device for phosphoric acid and a arsenic removal process thereof, so as to solve the problem proposed in the above-mentioned background technology that during the deep arsenic removal operation of phosphoric acid, although the appropriate temperature can accelerate the precipitation or adsorption process of arsenic compounds, too high or too low temperature will reduce the arsenic removal efficiency, and the gas generated during the arsenic removal cannot be well utilized, resulting in low purity of subsequent arsenic removal and the quantity is also easily affected.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a phosphoric acid deep arsenic removal device and its arsenic removal process, comprising an automatic feeding continuous arsenic removal reactor, a sedimentation zone is installed at the bottom of the automatic feeding continuous arsenic removal reactor, a top sealing flange is installed at the top of the automatic feeding continuous arsenic removal reactor, a temperature control and heating component is installed on the outer peripheral side of the automatic feeding continuous arsenic removal reactor, a metering doser is installed on the top surface of the automatic feeding continuous arsenic removal reactor, the side ends of the metering doser are respectively connected with three dosing metering pipes, the side ends of the three dosing metering pipes are connected with injection valve ports, the side end of the metering doser is connected with a feeding end, the bottom ends of the feeding end and the injection valve port are both connected with the top wall surface of the automatic feeding continuous arsenic removal reactor, the side end of the automatic feeding continuous arsenic removal reactor is connected with an exhaust pipe, and the exhaust pipe is installed on the outside A gas collector, wherein the bottom end of the precipitation zone is connected with a discharge pipe, a control valve is installed on the outside of the side end of the discharge pipe, an arsenic biosensor is installed on the side of the bottom end of the discharge pipe, the side end of the discharge pipe is connected with a circulator, the bottom end of the exhaust pipe and the top end of the circulator are connected, the side end of the exhaust pipe is connected with a Tesla valve pipe, the bottom of the Tesla valve pipe is connected with a continuous flow reactor, the surrounding side of the continuous flow reactor is connected with four groups of reaction tubes, one-way stop valves are installed on the outside of the side ends of the four groups of reaction tubes, and pressure reaction control ends are installed on the external surfaces of the four groups of reaction tubes, the side end of the circulator is connected with a guide filter air pipe, the side end of the guide filter air pipe is connected with a gas stripping tower, the bottom of the side end of the gas stripping tower is connected with a cleaning guide air pipe, the side of the gas stripping tower is connected with a treatment discharge pipe, and an automatic adder is installed on the outside of the guide filter air pipe.

[0006] Preferably, the temperature-controlled heating component includes an outer gear ring, the top of which is slidably connected to a connecting ring frame track, the side end of the connecting ring frame track is fastened to a side frame, the side end of the side frame is fastened to a main supporting structure, the other side end of the side frame is fastened to a side wall of an automatic feeding continuous arsenic removal reactor, and a drive motor is mounted inside the side frame.

[0007] Preferably, the top output end of the driving motor is connected to a main driving gear, the side end of the main driving gear is meshingly connected to an outer gear ring, the inner wall surface of the outer gear ring is fastened with a connecting rod column, the top of the connecting rod column is fastened with a vertical linear rail, the top of the vertical linear rail is fastened with a sliding groove block, a servo motor is installed inside the sliding groove block, the top of the sliding groove block is slidably connected to an annular sliding rail, and the left and right sides of the annular sliding rail are fastened to the surface of the main supporting structure.

[0008] Preferably, a sliding saddle is slidably connected inside the vertical linear rail, a microwave generating controller is installed on the side end of the sliding saddle, and a microwave heating generator is arranged on the side end of the microwave generating controller.

[0009] Preferably, a stripping drive motor is installed on the top of the automatic feeding continuous arsenic removal reactor, and the bottom output end of the stripping drive motor passes through the automatic feeding continuous arsenic removal reactor and is connected to a rotating rod, and drying rakes are installed outside the rotating rod.

[0010] Preferably, an automatic iris valve is installed inside the precipitation zone, an ion exchange membrane is installed at the bottom of the automatic iris valve, an array of multiple groups of heat-conducting rods are arranged around the interior of the automatic feeding continuous arsenic removal reactor, and the generating end direction of the microwave heating generator and the array of multiple groups of heat-conducting rods are arranged correspondingly according to the detection of the built-in temperature sensor.

[0011] Preferably, the side ends of the four groups of reaction tubes are connected to guide reaction tubes, the side ends of the guide reaction tubes are connected to catalytic oxidizers, and the side ends of the catalytic oxidizers are connected to circulating bidirectional tubes.

[0012] Preferably, the side end of the circulating bidirectional pipe is connected to a washing adsorption tower, and a washing circulating pump is arranged at the bottom of the washing adsorption tower.

[0013] Preferably, a detection sampling end and a discharge end are respectively arranged on the side end surfaces of the washing and adsorption tower, and the three dosing metering tubes are respectively an acid solution dripping metering tube, an alkali solution dripping metering tube and a arsenic removal liquid agent metering tube.

[0014] A phosphoric acid deep arsenic removal device and arsenic removal process thereof, comprising the following steps: S1. First, the raw materials can be added into the automatic feeding continuous arsenic removal reactor through the metering doser, and then, with the cooperation of the temperature control and heating components, it can be integrated and automatically adjusted according to the reaction rate monitored by the arsenic biosensor and the change amount of the arsenic material. After the raw materials enter, the de-material driving motor drives the rotating rod and the drying rake to rotate the raw materials. At the same time, with the cooperation of three dosing metering pipes and the injection valve port, the acid solution is dripped and metered, the alkali solution is dripped and metered, and the arsenic removal liquid agent is metered and added in turn according to the needs; S2. Then, under the internal reaction operation of the automatic feeding continuous arsenic removal reactor, the gas containing the arsenic medium generated in the reaction is adsorbed and guided to the circulator by the gas collector, and with the cooperation of the circulator, it is transported to the gas stripping tower by the guide filter air pipe, and after treatment, it is connected to the circulator by the clean guide air pipe; S3. Afterwards, the processed materials are guided from the discharge pipe to the continuous flow reactor by using the Tesla valve pipe, and the processing efficiency is improved by matching the four groups of reaction tubes and the one-way stop valve; S4. Next, the re-processed material is transported to the catalytic oxidizer through the connection between the guide reaction tube and the four groups of reaction tubes, and is guided to the washing adsorption tower through the circulating two-way pipe for operation.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. In the present invention, the position adjustment of the microwave heating source and the intelligent control of the microwave power are realized by cooperating with the temperature control heating component, the arsenic biosensor, the de-feeding drive motor, the rotating rod, the drying rake and the heat-conducting rod, which makes the microwave heating more precise and can adapt to the temperature changes in different areas of the automatic feeding continuous arsenic removal reactor, ensuring the consistency and controllability of the reaction conditions. The array-arranged heat-conducting rods can quickly respond to temperature changes, achieve uniform heat distribution, and avoid local overheating. At the same time, the heat-conducting path can be flexibly adjusted according to demand to ensure the temperature uniformity in the automatic feeding continuous arsenic removal reactor. At the same time, the microwave heating is combined with the internal drying rake stirring system, which not only improves the heating efficiency of the material, but also promotes the uniform mixing of the material. This combination method effectively improves the overall efficiency and effect of the arsenic removal operation, especially through the synergistic effect of the flow control valves of the acid solution, the alkali solution, and the arsenic removal liquid agent, and the microwave heating controller, a closed-loop control system is formed, which can be adjusted in real time according to the reaction variables to ensure the stability of the process and the product quality.

[0016] 2. In the present invention, the exhaust pipe is used to discharge the gas containing arsenic medium generated in the above reaction process in cooperation with the exhaust pipe, gas collector, circulator, gas stripping tower, clean air guide pipe and guide filter air pipe, so that the gas collector adsorbs the gas containing arsenic medium generated in the reaction and guides it to the circulator, and in cooperation with the circulator, it is transported to the gas stripping tower through the guide filter air pipe. After treatment, the clean air guide pipe is connected to the circulator, and then the Tesla valve pipe is used to guide the treated material from the discharge pipe to the continuous flow reactor, and according to the cooperation of the four groups of reaction tubes and the one-way stop valve, it is convenient to improve the processing efficiency.

[0017] 3. In the present invention, the Tesla valve tube is used to guide the treated material from the discharge pipe to the continuous flow reactor under the cooperation of the Tesla valve tube, the continuous flow reactor, the reaction tube, the one-way stop valve and the catalytic oxidizer. The cooperation of the four groups of reaction tubes and the one-way stop valve facilitates the improvement of the treatment efficiency. Under the cooperation of the four groups of reaction tubes, the treated material is transported to the guide reaction tube, and then transported to the catalytic oxidizer through the guide reaction tube. Under the action of the catalyst, a specific oxidation reaction will occur with the treated arsenic ion material, so that the activation energy required for the reaction is reduced, the reaction rate is accelerated, and the selectivity and efficiency of the reaction may be improved. Under the action of the circulating two-way tube, When the catalytic arsenic ion material is subsequently transported to the washing and adsorption tower and it is detected that the catalytic change amount has not been reached, the circulating two-way pipe is used to allow part of the treated arsenic ion material to return to the catalytic oxidizer again, which is beneficial to improve the utilization rate of the raw materials and recover the arsenic ion material with high catalytic purity. Then, when the arsenic ion material is guided from the circulating two-way pipe to the washing and adsorption tower, the arsenic ion material will contact with the washing liquid or adsorbent, and the unnecessary components will be separated by chemical or physical action, thereby improving the purity of the final product. The operation of the washing circulation pump is used to cause the washing liquid to rise in the washing and adsorption tower, and to contact with the descending arsenic ion material in countercurrent, thereby enhancing the mass transfer efficiency and improving the washing or adsorption effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic structural diagram of the main view of a phosphoric acid deep arsenic removal device of the present invention; Figure 2 It is a schematic structural diagram of a side view of a phosphoric acid deep arsenic removal device of the present invention; Figure 3 It is a partial structural schematic diagram of the main body of a phosphoric acid deep arsenic removal device of the present invention; Figure 4 This is a schematic diagram of the installation position structure of a temperature control and heating component in a phosphoric acid deep arsenic removal device of the present invention; Figure 5 It is a schematic diagram of the internal cross-sectional structure of an automatic feeding continuous arsenic removal reactor in a phosphoric acid deep arsenic removal device of the present invention; Figure 6 A phosphoric acid deep arsenic removal device of the present invention Figure 5 A schematic diagram of the enlarged structure at point A; Figure 7 This is a schematic diagram of the installation position structure of a control valve and an arsenic biosensor in a phosphoric acid deep arsenic removal device of the present invention; Figure 8 It is a structural schematic diagram of a temperature control and heating component in a phosphoric acid deep arsenic removal device of the present invention; Fig. 9 A phosphoric acid deep arsenic removal device of the present invention Figure 8 Schematic diagram of the enlarged structure at B.

[0019] In the figure: 1. Automatic feeding continuous arsenic removal reactor; 2. Top sealing flange; 3. Temperature control heating component; 301. External gear ring; 302. Connecting ring frame track; 303. Side frame; 304. Driving motor; 305. Main driving gear; 306. Connecting rod column; 307. Vertical linear rail; 308. Servo motor; 309. Annular sliding rail; 3010. Sliding slot block; 3011. Sliding saddle; 3012. Microwave generation controller; 3013. Microwave heating generator; 4. De-material driving motor; 5. Dosing metering tube; 6. Filling valve port; 7. Metering doser; 8. Sedimentation area; 9. Main supporting structure; 10. Discharge pipe; 11. Exhaust pipe; 12. Gas collector; 13. Circulator; 14. Tesla valve pipe; 15. Continuous flow reactor; 16. Reaction tube; 17. One-way stop valve; 18. Guide reaction tube; 19. Catalytic oxidizer; 20. Two-way circulation; 21. Washing adsorption tower; 22. Discharge end; 23. Washing circulation pump; 24. Automatic feeder; 25. Gas stripping tower; 26. Cleaning guide air pipe; 27. Guide filter air pipe; 28. Feed end; 29. ​​Treatment discharge pipe; 30. Rotating rod; 31. Drying rake leaves; 32. Heat transfer rod; 33. Automatic iris valve; 34. Ion exchange membrane; 35. Control valve; 36. Arsenic biosensor. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the implementation regulations described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] Reference Figure 1-Figure 9As shown: a phosphoric acid deep arsenic removal device, comprising an automatic feeding continuous arsenic removal reactor 1, a precipitation zone 8 is installed at the bottom of the automatic feeding continuous arsenic removal reactor 1, a top sealing flange 2 is installed at the top of the automatic feeding continuous arsenic removal reactor 1, a temperature control heating component 3 is installed on the outer peripheral side of the automatic feeding continuous arsenic removal reactor 1, a metering doser 7 is installed on the top surface of the automatic feeding continuous arsenic removal reactor 1, and the side ends of the metering doser 7 are respectively connected with three dosing metering pipes 5, and the side ends of the three dosing metering pipes 5 are connected with injection valve ports 6, the side end of the metering doser 7 is connected with a feeding end 28, and the bottom ends of the feeding end 28 and the injection valve port 6 are both connected to the top wall surface of the automatic feeding continuous arsenic removal reactor 1, the side end of the automatic feeding continuous arsenic removal reactor 1 is connected with an exhaust pipe 11, and a gas collector 12 is installed outside the exhaust pipe 11, and the bottom end of the precipitation zone 8 is connected with a discharge pipe 10 A control valve 35 is installed on the outside of the side end of the discharge pipe 10, an arsenic biosensor 36 is installed on the side of the bottom end of the discharge pipe 10, the side end of the discharge pipe 10 is connected with a circulator 13, the bottom end of the exhaust pipe 11 is connected to the top of the circulator 13, the side end of the exhaust pipe 11 is connected with a Tesla valve pipe 14, the bottom of the Tesla valve pipe 14 is connected with a continuous flow reactor 15, the surrounding side of the continuous flow reactor 15 is connected with four groups of reaction tubes 16, the side ends of the four groups of reaction tubes 16 are externally installed with a one-way stop valve 17, the external surface of the four groups of reaction tubes 16 is installed with a pressure reaction control end, the side end of the circulator 13 is connected with a guide filter air pipe 27, the side end of the guide filter air pipe 27 is connected with a gas stripping tower 25, the bottom of the side end of the gas stripping tower 25 is connected with a cleaning guide air pipe 26, the side of the gas stripping tower 25 is connected with a treatment discharge pipe 29, and the automatic adder 24 is installed outside the guide filter air pipe 27.

[0022] according to Figure 1-Figure 5 , Figure 7 , Figure 8 and Fig. 9 As shown, the temperature control heating component 3 includes an outer gear ring 301, the top of the outer gear ring 301 is slidably connected to a connecting ring frame track 302, the side end of the connecting ring frame track 302 is fastened to a side frame 303, the side end of the side frame 303 is fastened to a main support structure 9, the other side end of the side frame 303 is fastened to a side wall of the automatic feeding continuous arsenic removal reactor 1, and a driving motor 304 is installed inside the side frame 303. When the amount of arsenic removal treatment of the automatic feeding continuous arsenic removal reactor 1 changes, the driving motor 304 is used to drive the main driving gear 305 to rotate, and the rotatability of the main driving gear 305 is used to make the outer gear ring 301 rotate inside the connecting ring frame track 302, thereby driving the connecting rod column 306, the vertical linear rail 307, the sliding slot block 3010 and the servo motor 308 to rotate and adjust inside the annular sliding rail 309.

[0023] according to Figure 1-Figure 5 , Figure 7 , Figure 8 and Fig. 9 As shown, the top output end of the driving motor 304 is connected to a main driving gear 305, the side end of the main driving gear 305 is meshed with the outer gear ring 301, the inner wall surface of the outer gear ring 301 is fastened with a connecting rod column 306, the top of the connecting rod column 306 is fastened with a vertical linear rail 307, the top of the vertical linear rail 307 is fastened with a sliding slot block 3010, the interior of the sliding slot block 3010 is equipped with a servo motor 308, the top of the sliding slot block 3010 is slidably connected with an annular sliding rail 309, the left and right sides of the annular sliding rail 309 are fastened to the surface of the main supporting structure 9, the vertical linear rail 307 stops when it reaches the array-type multi-group heat-conducting rod 32, and the servo motor 308 is started, so that the servo motor 308 drives the sliding The saddle 3011, the microwave generation controller 3012 and the microwave heating generator 3013 are monitored by the built-in temperature sensor, so that the microwave heating generator 3013 drives the microwave generation controller 3012 and the microwave heating generator 3013 to stop outside the generated change area, and then the microwave generation controller 3012 adjusts the power intensity of the microwave heating generator 3013 in real time according to the reaction variable of the raw material in the automatic feeding continuous arsenic removal reactor 1, so that a heat source point is generated outside, which is convenient for coordinating with the dematerializing stirring temperature formed by the internal drying rake leaves 31, distributing heat more evenly, improving the heating efficiency and reaction uniformity of the material, and helping to accelerate the removal process of harmful elements in the arsenic removal operation, while protecting the beneficial components from damage.

[0024] according to Figure 1-Figure 5 , Figure 7 , Figure 8 and Fig. 9 As shown, the vertical linear rail 307 is internally slidably connected with a sliding saddle 3011, and a microwave generating controller 3012 is installed on the side end of the sliding saddle 3011, and a microwave heating generator 3013 is installed on the side end of the microwave generating controller 3012. The heat source points generated by the microwave generating controller 3012 and the microwave heating generator 3013 are heat-conducted according to the release of multiple groups of array-type heat-conducting rods 32. When a change in the reaction heat in a certain area is detected, the heat-conducting rod 32 can quickly transfer the heat energy to the required position according to demand, or adjust when local heat accumulation is detected to maintain the uniformity of the temperature in the reactor. When no change in the reaction heat is detected, the whole body forms a uniform rotation and cooperates with the de-material stirring temperature formed by the drying rakes 31 outside the automatic feeding continuous arsenic removal reactor 1.

[0025] according to Figure 1 , Figure 2 , Figure 4 , Figure 5 and Figure 6As shown, a discharging drive motor 4 is installed on the top of the automatic feeding continuous arsenic removal reactor 1, and the bottom output end of the discharging drive motor 4 passes through the automatic feeding continuous arsenic removal reactor 1 and is connected to a rotating rod 30, and a drying rake 31 is installed outside the rotating rod 30. When the material and acid, alkali, and arsenic removal liquid are added appropriately, the discharging drive motor 4 is started, and the discharging drive motor 4 is used to drive the rotating rod 30 and the drying rake 31 to be located inside the automatic feeding continuous arsenic removal reactor 1 to strengthen the reaction, increase the contact area between the materials, promote the uniform distribution of heat and reactants, ensure that the materials are fully mixed and reacted, and improve the arsenic removal efficiency.

[0026] according to Figure 6 As shown, an automatic iris valve 33 is installed inside the precipitation zone 8, an ion exchange membrane 34 is installed at the bottom of the automatic iris valve 33, an array of multiple groups of heat-conducting rods 32 are arranged around the interior of the automatic feeding continuous arsenic removal reactor 1, and the generating end direction of the microwave heating generator 3013 and the array of multiple groups of heat-conducting rods 32 are correspondingly arranged according to the detection of the built-in temperature sensor. The precipitation zone 8 is used to allow the insoluble matter to settle after the material is treated, and the automatic iris valve 33 is installed inside the precipitation zone 8, and then the ion exchange membrane 34 is installed at the bottom of the automatic iris valve 33, so that the ion exchange membrane 34 can effectively remove the arsenic ions in the material discharged through the automatic iris valve 33, while reducing the loss of useful components and improving the purity of the product.

[0027] according to Figure 1-Figure 3 As shown, the side ends of the four groups of reaction tubes 16 are connected to the guide reaction tubes 18, the side ends of the guide reaction tubes 18 are connected to the catalytic oxidizer 19, and the side ends of the catalytic oxidizer 19 are connected to the circulating two-way tube 20. With the cooperation of the four groups of reaction tubes 16, the treated materials are transported to the guide reaction tubes 18, and then transported to the catalytic oxidizer 19 through the guide reaction tubes 18. Under the action of the catalyst, a specific oxidation reaction will occur with the treated arsenic ion material, so that the activation energy required for the reaction is reduced, the reaction rate is accelerated, and the selectivity and efficiency of the reaction may be improved. Under the action of the circulating two-way tube 20, when the catalyzed arsenic ion material is subsequently transported to the washing and adsorption tower 21 and it is detected that the catalytic change amount has not been reached, the circulating two-way tube 20 is used to allow part of the treated arsenic ion material to return to the catalytic oxidizer 19 again, which is beneficial to improve the utilization rate of the raw materials and recover the arsenic ion material with high catalytic purity.

[0028] according to Figure 1 and Figure 2As shown, the side end of the circulating two-way pipe 20 is connected to the washing adsorption tower 21, and a washing circulating pump 23 is arranged at the bottom of the washing adsorption tower 21. Then, when the arsenic ion material is guided from the circulating two-way pipe 20 to the washing adsorption tower 21, the arsenic ion material will contact with the washing liquid or the adsorbent, and the unnecessary components will be separated by chemical or physical action, so as to improve the purity of the final product. In addition, the operation of the washing circulating pump 23 is used to cause the washing liquid to rise in the washing adsorption tower 21, and to contact with the descending arsenic ion material in countercurrent, so as to enhance the mass transfer efficiency and improve the washing or adsorption effect.

[0029] according to Figure 1 and Figure 2 As shown, the side surfaces of the washing and adsorption tower 21 are respectively provided with a detection sampling end and a discharge end 22, and the three dosing metering tubes 5 are respectively an acid solution dripping metering tube, an alkali solution dripping metering tube and a arsenic removal liquid agent metering tube, so that the detection sampling end at the side end of the washing and adsorption tower 21 allows technicians to regularly or continuously monitor the state of the arsenic ion material in the washing and adsorption tower 21, including but not limited to key indicators such as pH value, concentration, purity, etc., and through the analysis of the sample by the built-in pH sensor, the process parameters can be adjusted in time to ensure that the treatment process meets the expected goals, and the discharge end 22 discharges the treated material from the washing and adsorption tower 21 to enter the subsequent treatment or storage stage. In the overall operation, the flow control valves are installed on the outer peripheral sides of the acid solution dripping metering tube, the alkali solution dripping metering tube and the arsenic removal liquid agent metering tube, so as to form consistency with the internal arsenic removal reaction of the above-mentioned automatic feeding continuous arsenic removal reactor 1 and the de-material stirring temperature control formed by the microwave heating generator 3013 and the drying rake leaves 31.

[0030] The wiring diagram of the automatic feeding continuous arsenic removal reactor 1, the driving motor 304, the microwave generation controller 3012, the microwave heating generator 3013, the material removal driving motor 4, the gas collector 12, the continuous flow reactor 15, the catalytic oxidizer 19, the washing adsorption tower 21, the gas stripping tower 25, the ion exchange membrane 34, the arsenic biosensor 36, the pH sensor and the temperature sensor in the present invention belongs to the common knowledge in the art, and its working principle is a well-known technology. The model is selected according to the actual use. Therefore, the control mode and wiring arrangement of the automatic feeding continuous arsenic removal reactor 1, the driving motor 304, the microwave generation controller 3012, the microwave heating generator 3013, the material removal driving motor 4, the gas collector 12, the continuous flow reactor 15, the catalytic oxidizer 19, the washing adsorption tower 21, the gas stripping tower 25, the ion exchange membrane 34, the arsenic biosensor 36, the pH sensor and the temperature sensor are no longer explained in detail.

[0031] The use method and working principle of the device are as follows: First, when the phosphoric acid deep dearsenication operation is performed, the raw material can be added into the automatic feeding continuous dearsenication reactor 1 through the metering feeder 7. When the amount of dearsenication treatment of the automatic feeding continuous dearsenication reactor 1 changes, the driving motor 304 is used to drive the main driving gear 305 to rotate, and the rotatability of the main driving gear 305 is used to make the outer gear ring 301 rotate inside the connecting ring frame track 302, thereby driving the connecting rod column 306, the vertical linear rail 307, the sliding groove block 3010 and the servo motor 308 to rotate and adjust inside the annular sliding rail 309, and the vertical linear rail 307 stops when it reaches the array-type multi-group heat-conducting rod 32, and the servo motor 308 is started, so that the servo motor 308 drives the sliding The saddle 3011, the microwave generation controller 3012 and the microwave heating generator 3013 are monitored by the built-in temperature sensor, so that the microwave heating generator 3013 drives the microwave generation controller 3012 and the microwave heating generator 3013 to stop outside the generated change area, and then the microwave generation controller 3012 adjusts the power intensity of the microwave heating generator 3013 in real time according to the reaction variable of the raw material in the automatic feeding continuous arsenic removal reactor 1, so that a heat source point is generated outside, which is convenient for coordinating with the de-material stirring temperature formed by the internal drying rake leaves 31, distributing heat more evenly, improving the heating efficiency and reaction uniformity of the material, and helping to accelerate the removal process of harmful elements in the arsenic removal operation, while protecting the beneficial components from Damage, and the heat source points generated by the microwave generation controller 3012 and the microwave heating generator 3013 are heat-conducted according to the release of the array-type multiple groups of heat-conducting rods 32. When the reaction heat in a certain area is detected to change, the heat-conducting rod 32 can quickly transfer the heat energy to the required position according to the demand, or adjust when local heat accumulation is detected to maintain the uniformity of the temperature in the reactor. When the reaction heat change is not detected, the whole is formed to rotate at a uniform speed and is located outside the automatic feeding continuous arsenic removal reactor 1 to cooperate with the de-material stirring temperature formed by the drying rake 31. Flow control valves are installed on the outer peripheral sides of the acid solution dripping metering tube, the alkali solution dripping metering tube and the de-arsenic liquid metering tube, which is convenient for and The internal arsenic removal reaction of the above-mentioned automatic feeding continuous arsenic removal reactor 1 and the de-material stirring temperature control formed by the microwave heating generator 3013 and the drying rake 31 form a consistency. When the material and the acid solution, alkali solution and de-arsenic removal liquid agent are added appropriately, the de-material driving motor 4 is started, and the de-material driving motor 4 is used to drive the rotating rod 30 and the drying rake 31 to be located inside the automatic feeding continuous arsenic removal reactor 1 to strengthen the reaction, increase the contact area between the materials, promote the uniform distribution of heat and reaction substances, ensure that the materials are fully mixed and reacted, and improve the de-arsenication efficiency. The precipitation zone 8 is used to allow the insoluble matter to settle after the material is treated, and the automatic iris valve 33 is installed inside the precipitation zone 8, and then the ion exchange membrane 34 is installed at the bottom of the automatic iris valve 33.The ion exchange membrane 34 effectively removes arsenic ions in the material discharged through the automatic iris valve 33, while reducing the loss of useful components and improving the purity of the product. The installed arsenic biosensor 36 uses the detection sensor sheet connected in series to penetrate the attached precipitation zone 8 to the inner wall surface of the automatic feeding continuous arsenic removal reactor 1, so as to facilitate real-time monitoring of the arsenic content in the product formed. At the same time, the exhaust pipe 11 is used to discharge the gas containing the arsenic medium generated in the above reaction process, so that the gas collector 12 collects the arsenic medium generated in the reaction. The gas adsorption is guided to the circulator 13, and with the cooperation of the circulator 13, it is transported to the gas stripping tower 25 through the guide filter air pipe 27. Under the action of the built-in ultrafiltration membrane in the gas stripping tower 25, the arsenic medium in the gas is treated. After the treatment, the clean guide air pipe 26 is connected to the circulator 13. After that, the treated material is guided from the discharge pipe 10 to the continuous flow reactor 15 by the Tesla valve pipe 14. According to the cooperation of the four groups of reaction tubes 16 and the one-way stop valve 17, it is convenient to improve the processing efficiency. Under the action of the catalyst, the treated material is transported to the guide reaction tube 18, and then transported to the catalytic oxidizer 19 through the guide reaction tube 18. Under the action of the catalyst, a specific oxidation reaction will occur with the treated arsenic ion material, so as to reduce the activation energy required for the reaction, accelerate the reaction rate, and at the same time improve the selectivity and efficiency of the reaction. Under the action of the circulating two-way pipe 20, when the catalytic arsenic ion material is subsequently transported to the washing adsorption tower 21 and the catalytic change amount is not reached, the circulating two-way pipe 20 is used to allow part of the treated arsenic ion material to return to the catalytic oxidizer 19 again, which is beneficial to improve the utilization rate of the raw materials and recover the arsenic ion material with high catalytic purity. Then, when the arsenic ion material is guided from the circulating two-way pipe 20 to the washing adsorption tower 21, the arsenic ion material will contact with the washing liquid or adsorbent, and separate the unnecessary components through chemical or physical action, thereby improving the purity of the final product. The operation of the washing circulation pump 23 is used to cause the washing liquid to rise in the washing adsorption tower 21 and countercurrently contact with the descending arsenic ion material, thereby enhancing the mass transfer efficiency and improving the washing or adsorption effect.

[0032] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A phosphoric acid deep arsenic removal device, characterized in that: The invention comprises an automatic feeding continuous arsenic removal reactor (1), wherein a sedimentation zone (8) is installed at the bottom of the automatic feeding continuous arsenic removal reactor (1), a top sealing flange (2) is installed at the top of the automatic feeding continuous arsenic removal reactor (1), a temperature control heating component (3) is installed on the outer peripheral side of the automatic feeding continuous arsenic removal reactor (1), and a metering doser (7) is installed on the top surface of the automatic feeding continuous arsenic removal reactor (1), and the side ends of the metering doser (7) are respectively connected to three dosing metering pipes (5), and the three metering pipes (5) are connected to the metering doser (7). The side end of the dosing metering pipe (5) is connected to the injection valve port (6), the side end of the metering doser (7) is connected to the feeding end (28), the bottom ends of the feeding end (28) and the injection valve port (6) are both connected to the top wall surface of the automatic feeding continuous arsenic removal reactor (1), the side end of the automatic feeding continuous arsenic removal reactor (1) is connected to the exhaust pipe (11), the outside of the exhaust pipe (11) is provided with a gas collector (12), the bottom end of the precipitation zone (8) is connected to the discharge pipe (10), the side end of the discharge pipe (10) is connected to the discharge pipe (10), and the side end of the discharge pipe (10) is connected to the discharge pipe (10). A control valve (35) is installed externally, an arsenic biosensor (36) is installed on the side of the bottom end of the discharge pipe (10), the side end of the discharge pipe (10) is connected to a circulator (13), the bottom end of the exhaust pipe (11) is connected to the top end of the circulator (13), the side end of the exhaust pipe (11) is connected to a Tesla valve pipe (14), the bottom of the Tesla valve pipe (14) is connected to a continuous flow reactor (15), and the circumference of the continuous flow reactor (15) is connected to four groups of reaction tubes (16), and the four groups of reaction tubes ( A one-way stop valve (17) is installed on the outside of the side end of the reaction tube (16), and a pressure reaction control end is installed on the external surface of the four groups of reaction tubes (16). The side end of the circulator (13) is connected to a guide filter air pipe (27), and the side end of the guide filter air pipe (27) is connected to a gas stripping tower (25). The bottom of the side end of the gas stripping tower (25) is connected to a clean guide air pipe (26), and the side of the gas stripping tower (25) is connected to a treatment exhaust pipe (29). An automatic adder (24) is installed on the outside of the guide filter air pipe (27).

2. The phosphoric acid deep arsenic removal device according to claim 1, characterized in that: The temperature control heating component (3) comprises an outer gear ring (301), the top of the outer gear ring (301) is slidably connected to a connecting ring frame track (302), the side end of the connecting ring frame track (302) is fastened to a side frame (303), the side end of the side frame (303) is fastened to a main support structure (9), the other side end of the side frame (303) is fastened to a side wall of the automatic feeding continuous arsenic removal reactor (1), and a drive motor (304) is mounted inside the side frame (303).

3. The phosphoric acid deep arsenic removal device according to claim 2, characterized in that: The top output end of the driving motor (304) is connected to a main driving gear (305), the side end of the main driving gear (305) is meshingly connected to the outer gear ring (301), the inner wall surface of the outer gear ring (301) is fastened with a connecting rod column (306), the top of the connecting rod column (306) is fastened with a vertical linear rail (307), the top of the vertical linear rail (307) is fastened with a sliding slot block (3010), a servo motor (308) is mounted inside the sliding slot block (3010), the top of the sliding slot block (3010) is slidably connected to an annular sliding rail (309), and the left and right sides of the annular sliding rail (309) are fastened with the surface of the main supporting structure (9).

4. The phosphoric acid deep arsenic removal device according to claim 3, characterized in that: The vertical linear rail (307) is internally slidably connected to a sliding saddle (3011), a microwave generating controller (3012) is installed on the side end of the sliding saddle (3011), and a microwave heating generator (3013) is arranged on the side end of the microwave generating controller (3012).

5. The phosphoric acid deep arsenic removal device according to claim 4, characterized in that: A material removal drive motor (4) is installed on the top of the automatic feeding continuous arsenic removal reactor (1), and a bottom output end of the material removal drive motor (4) passes through the automatic feeding continuous arsenic removal reactor (1) and is connected to a rotating rod (30), and a drying rake (31) is installed outside the rotating rod (30).

6. The phosphoric acid deep arsenic removal device according to claim 5, characterized in that: An automatic iris valve (33) is installed inside the precipitation zone (8), an ion exchange membrane (34) is installed at the bottom of the automatic iris valve (33), an array of multiple groups of heat-conducting rods (32) are arranged around the inside of the automatic feeding continuous arsenic removal reactor (1), and the generating end direction of the microwave heating generator (3013) and the array of multiple groups of heat-conducting rods (32) are arranged correspondingly according to the detection of the built-in temperature sensor.

7. The phosphoric acid deep arsenic removal device according to claim 6, characterized in that: The side ends of the four groups of reaction tubes (16) are connected to the guide reaction tubes (18), the side ends of the guide reaction tubes (18) are connected to the catalytic oxidizers (19), and the side ends of the catalytic oxidizers (19) are connected to the circulation bidirectional tubes (20).

8. The phosphoric acid deep arsenic removal device according to claim 7, characterized in that: The side end of the circulating bidirectional pipe (20) is connected to a washing adsorption tower (21), and a washing circulating pump (23) is arranged at the bottom of the washing adsorption tower (21).

9. The phosphoric acid deep arsenic removal device according to claim 8, characterized in that: The side end surfaces of the washing and adsorption tower (21) are respectively provided with a detection sampling end and a discharge end (22), and the three dosing metering pipes (5) are respectively an acid solution dripping metering pipe, an alkali solution dripping metering pipe and a arsenic removal liquid agent metering pipe.

10. A dearsenication process for a phosphoric acid deep dearsenication device, characterized in that: The phosphoric acid deep arsenic removal device according to claim 9 is used, comprising the following steps: S1. First, the raw material is added into the automatic feeding continuous arsenic removal reactor (1) through the metering doser (7). Then, with the cooperation of the temperature control heating component (3), it can be integrated and automatically adjusted according to the reaction rate monitored by the arsenic biosensor (36) and the change amount of the arsenic material. After the raw material enters, the de-material driving motor (4) drives the rotating rod (30) and the drying rake (31) to rotate the raw material. At the same time, with the cooperation of three dosing metering pipes (5) and the injection valve port (6), the acid solution is dripped and metered, the alkali solution is dripped and metered, and the arsenic removal liquid agent is metered and added in turn according to the needs; S2. Next, under the internal reaction operation of the automatic feeding continuous arsenic removal reactor (1), the gas containing the arsenic medium generated in the reaction is adsorbed and guided to the circulator (13) by the gas collector (12), and in cooperation with the circulator (13), the gas is transported to the gas stripping tower (25) by the guide filter gas pipe (27), and after treatment, the gas is connected to the circulator (13) by the clean guide gas pipe (26); S3. Afterwards, the Tesla valve tube (14) is used to guide the processed material from the discharge pipe (10) to the continuous flow reactor (15), and the four groups of reaction tubes (16) and the one-way stop valve (17) are coordinated to improve the processing efficiency; S4. Next, the guided reaction tube (18) is connected to the four groups of reaction tubes (16), so that the re-processed material is transported to the catalytic oxidizer (19), and is guided to the washing adsorption tower (21) through the circulating two-way tube (20) for operation.

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