Efficient energy-saving evaporation system for extracting bromine from brine

Abstract

An efficient energy-saving evaporation system for extracting bromine from brine relates to the technical field of bromine production and comprises a horizontally arranged supporting base, a vertically arranged separation tank is fixedly arranged at the top of the supporting base, a mixing assembly and a gas inlet assembly which are communicated with each other are vertically arranged in the separation tank, and the gas inlet assembly is communicated with an external chlorine source. A heating assembly is arranged at the top of the supporting base, the mixing assembly is communicated with the heating assembly, and a discharge pipe and a waste discharge valve which are communicated with an inner cavity of the separation tank are fixedly arranged at the top and the lower outer wall of the separation tank; the heating assembly comprises a vertically-arranged rectangular supporting frame, a vertically-arranged supporting ring is fixedly arranged on the inner wall of the rectangular supporting frame, and a coil disc type winding is coaxially arranged in the supporting ring. The problems that existing evaporation equipment for extracting bromine from brine is low in bromine extraction rate and serious in energy waste are solved; the heat conduction efficiency of the liquid heating assembly is low, so that the heating speed is low; the oxidation rate of bromide ions in the primary acid is low due to short contact time and poor contact effect of the primary acid and chlorine.

Description

Technical Field

[0001] The invention relates to the technical field of bromine production, in particular to a high-efficiency energy-saving evaporation system for extracting bromine from brine. Background Art

[0002] Bromine and bromine-based deep-processed products are widely used in organic synthesis, oilfield chemistry, dyes, flame retardants and other industries. Bromine-based deep-processed products are numerous and have become an important branch of the fine chemical industry. They are currently becoming the focus and hotspot of market development. Commonly used bromine extraction methods include seawater extraction, underground brine extraction, and salt industry brine slag (primary acid) extraction. The bromide ion content of brine slag is greatly increased after the salt production process is concentrated, which can reduce the processing volume in the extraction process, reduce production costs, and improve production efficiency. It is the most commonly chosen treatment method for bromine processing companies. Bromine needs to be oxidized and separated from the brine slag with the help of evaporation equipment during the preparation process.

[0003] The existing brine evaporation equipment for bromine extraction has gradually exposed its shortcomings during use, mainly in the following aspects: First, the heat utilization rate of water vapor is low, resulting in a low bromine extraction rate and serious energy waste. Specifically, in the process of preparing bromine, the primary acid solution is added to the separation tank through the upper part of the separation tank, the electric steam boiler heats the water to form water vapor, and the water vapor and chlorine are mixed and added to the separation tank through the middle and lower part of the separation tank. The mixed gas is mixed with the primary acid in the separation tank, the chlorine oxidizes the bromide ions in the primary acid and frees the bromine. At the same time, the water vapor heats the solution and converts the bromine into a gaseous state and blows it out with the mixed gas. The primary acid solution is sprayed from top to bottom, and the mixed gas is sprayed from bottom to top. The primary acid solution and the mixed gas meet at a faster speed in the separation tank and then separate. Therefore, the contact time between the primary acid solution and the mixed gas is short, the heat transferred from the water vapor to the solution is small, the heat utilization rate of the water vapor is low, the solution is not heated sufficiently, and the oxidized bromine in the solution cannot be fully gasified and blown out. Therefore, the bromine extraction rate is low and energy waste is serious.

[0004] Second, the heat conduction efficiency of the liquid heating component is low, resulting in a slow heating speed. Specifically, the liquid heating component in the existing evaporation equipment (taking the electric steam boiler to heat water as an example) usually heats the liquid through an electric heating tube, and the electric heating tube is fixedly installed in the equipment. When the electric heating tube heats the liquid, the liquid in the area near the electric heating tube is first heated. The high-temperature area near the electric heating tube transfers heat to the surrounding low-temperature area and then heats the liquid in the low-temperature area. The size of the thermal resistance is proportional to the length of the heat transfer path. When the electric heating tube heats the liquid in the surrounding low-temperature area, the thermal resistance is large, so the heat conduction efficiency is low, which leads to a slow heating speed of the liquid.

[0005] Third, the contact time between the primary acid and chlorine is short and the contact effect is poor, resulting in a low oxidation rate of bromide ions in the primary acid. Specifically, as described in the first problem point, the primary acid solution is sprayed from top to bottom, and the mixed gas is sprayed from bottom to top. The primary acid and the mixed gas have a certain initial velocity after being sprayed out, and the primary acid performs free fall motion in the separation tank. The speed at which the primary acid solution falls downward will become faster and faster. Therefore, the contact time between the primary acid and chlorine in the separation tank is extremely short and the contact is uneven, resulting in insufficient contact between the bromide ions in the primary acid and the chlorine. The bromide ions in the primary acid cannot be fully oxidized, which in turn leads to a low oxidation rate of bromide ions in the primary acid.

[0006] In summary, the prior art obviously has inconveniences and defects in practical use, so it is necessary to improve it. Summary of the invention

[0007] In view of the defects in the prior art, the technical problem to be solved by the present invention is to provide a high-efficiency and energy-saving evaporation system for extracting bromine from brine. The equipment adopts steam-free evaporation technology to extract bromide ions in primary acid. The equipment directly heats the primary acid. The heated primary acid contacts and is oxidized with chlorine in a separation tank. The oxidized bromine in the primary acid is directly heated and vaporized by the primary acid solution and blown out together with the chlorine. The equipment eliminates the process of heating water with an electric steam boiler and heating the primary acid solution with water vapor, thus avoiding the problem of low heat utilization rate caused by the short contact time between the primary acid solution and water vapor. Therefore, the equipment has high heat utilization rate, reduces energy waste, and the primary acid solution can fully heat and vaporize the oxidized bromine, so the extraction rate of bromine is high. When heating liquid, the device can reduce the length of the heat transfer path, greatly reduce thermal resistance, improve heat conduction efficiency, and speed up the heating speed of the liquid; The equipment can also significantly increase the contact time between the primary acid solution and chlorine gas, improve the contact effect between the primary acid solution and chlorine gas, and thereby fully oxidize the bromide ions in the primary acid, thereby increasing the oxidation rate of the bromide ions in the primary acid.

[0008] To solve the above problems, the present invention provides the following technical solutions: A high-efficiency and energy-saving evaporation system for extracting bromine from brine, comprising a horizontally arranged support base, a vertically arranged separation tank fixedly arranged on the top of the support base, a mixing assembly and an air intake assembly arranged in communication with each other arranged up and down in the separation tank, the air intake assembly being connected to an external chlorine source, a heating assembly being arranged on the top of the support base, the mixing assembly being connected to the heating assembly, and a discharge pipe and a waste discharge valve being fixedly arranged on the top and lower outer wall of the separation tank and being connected to the inner cavity thereof; The heating component includes a vertically arranged rectangular support frame, the inner wall of the rectangular support frame is fixedly provided with a vertically arranged support ring, a coil disc winding is coaxially arranged in the support ring, and the inner wall of the support ring on both sides of the coil disc winding are coaxially fixed with limit brackets for limiting the coil disc winding, both ends of the coil disc winding pass through the rectangular support frame to extend to the outside and are electrically connected to the control module, the relative ports of the rectangular support frame are fixedly provided with a communicating square tube, the inner wall of the square tube is fixedly provided with a heat insulation board at a position close to the rectangular support frame, and the two opposite ends of the heat insulation boards are provided with metal heating plates, and the metal heating plate is fixedly connected to the inner wall of the square tube, and the two metal The opposite ends of the heating plate are fixedly connected with vertical partitions, which are fixedly connected to the inner wall of the square tube and divide the internal space of the square tube into two. The opposite ends of the partition are provided with sliding plates with horizontal sliding sealing arrangements. The two sliding plates on the same partition are slidably arranged toward or away from each other, and the side walls of the sliding plate are slidingly sealed and connected to the inner wall of the square tube. A number of horizontally arranged serpentine grooves are vertically arranged inside the metal heating plate. The two ports of the serpentine grooves are respectively located on both sides of the partition and are connected to the inner cavity of the square tube through the metal heating plate. The top and bottom of the square tube are located on both sides of the partition, respectively, with a liquid adding valve and a liquid drain valve connected to their inner cavity, and the liquid drain valve is connected to the mixing assembly.

[0009] As an optimized solution, the mixing assembly includes a supporting circular plate coaxially fixed to the inner wall of the separation tank, a plurality of fixed tubes vertically penetrating the top of the supporting circular plate are evenly distributed along the circumferential direction, an upper fixed circular plate and a lower fixed circular plate are coaxially fixed to the inner wall of the separation tank at positions above and below the supporting circular plate, the lower port of the fixed tube penetrates downwardly through the lower fixed circular plate and is connected to the air intake assembly, the upper port of the fixed tube is sealed and has a hemispherical structure, the top of the fixed tube penetrates upward through the upper fixed circular plate and is evenly distributed with a plurality of vents vertically penetrating the top, a driving shaft rotatably arranged coaxially is provided at the top of the fixed tube, a plurality of stirring plates are evenly distributed along the circumferential direction on the lower outer wall of the driving shaft, one end of the stirring plate is inclined downwardly, a fixed cylinder is coaxially fixed to the inner wall of the fixed tube below the stirring plate, a liquid spraying tube connected to its inner cavity is coaxially fixed to the top of the fixed cylinder, a plurality of vertically arranged built-in tubes are evenly distributed circumferentially inside the fixed cylinder, and the upper end of the built-in tube The opening and lower opening of the fixing tube both extend to the outside of the fixing tube and are flush with the top and bottom of the fixing tube, the inner cavity of the fixing tube is connected to the drain valve, and a plurality of coaxially arranged transition tubes are evenly distributed along the axial direction at a position below the fixing tube inside the fixing tube, and the upper and lower openings of the transition tube are respectively coaxially fixedly connected with an upper fixed bucket and a lower fixed bucket that are arranged in communication, the upper fixed bucket and the lower fixed bucket are arranged back to back and are both fixedly connected to the fixing tube, and the upper fixed bucket and the lower fixed bucket between two adjacent transition tubes are opposed to each other, and the upper fixed bucket and the lower fixed bucket between the two adjacent transition tubes have their ports facing each other, and the upper fixed bucket is provided with a coaxially arranged fixing column in the upper fixed bucket, the top of the fixing column extends upward to the outside of the upper fixed bucket, the top and the bottom of the fixing column are both conical structures, the two adjacent fixing columns are connected by a connecting column, and the fixing column located at the top is fixedly connected to the fixing tube, and the lower inner wall of the fixing tube is coaxially fixedly connected with a built-in circular plate, and the top of the built-in circular plate is evenly distributed with a plurality of vertically penetrating through holes, and the bottom of the built-in circular plate is flush with the lower opening of the fixing tube.

[0010] As an optimized solution, the air intake assembly includes a sliding circular plate vertically slidably connected to the inner wall of the separation tank, the bottom of the sliding circular plate is evenly distributed along the circumferential direction with a plurality of sliding tubes vertically penetrating therethrough, the sliding tube is fixedly connected to the sliding circular plate, the lower ports of a plurality of the fixed tubes extend into a plurality of sliding tubes correspondingly and are slidingly and sealingly connected to the sliding tubes, an exhaust pipe is coaxially fixedly connected to the lower inner wall of the sliding tube, a plurality of vertically arranged exhaust pipes are evenly distributed along the circumferential direction inside the exhaust pipe, the upper port and the lower port of the exhaust pipe both extend outside the exhaust pipe and are flush with the top and bottom of the exhaust pipe correspondingly, and the exhaust pipe The position of the outer wall located in the exhaust cylinder is evenly distributed along the circumferential direction with a plurality of leakage holes inclined upward. The top of the exhaust cylinder is provided with liquid absorbent cotton, and the liquid absorbent cotton is in contact with the inner wall of the sliding tube and the bottom of the built-in circular plate. The bottom of the sliding circular plate is coaxially fixed with an air intake cylinder. The outer wall of the air intake cylinder is evenly distributed along the circumferential direction with a plurality of ventilation pipes connected with its inner cavity. One of the ports of the ventilation pipe passes through the sliding tube and is connected with the inner cavity of the exhaust cylinder. An air intake hose connected with its inner cavity is fixedly provided at the bottom of the air intake cylinder. One end of the air intake hose passes through the separation tank, extends to the outside and is connected with an external chlorine gas source.

[0011] As an optimized solution, the upper side wall and the lower side wall of the square tube are respectively fixedly connected with an upper supporting L-shaped plate and a lower supporting L-shaped plate, and the ends of the upper supporting L-shaped plate and the lower supporting L-shaped plate are respectively fixedly connected with two horizontally arranged upper driving telescopic cylinders and lower driving telescopic cylinders, and the telescopic ends of the upper driving telescopic cylinder and the lower driving telescopic cylinder are fixedly connected with the two sliding plates accordingly.

[0012] As an optimized solution, the top of the driving shaft passes through the fixed tube upward, and a plurality of driving motors are fixedly provided on the top of the separation tank. The output ends of the driving motors pass through the separation tank and are fixedly connected to the driving shaft.

[0013] As an optimized solution, a liquid inlet cylinder is coaxially fixed to the top of the supporting circular plate, and a plurality of liquid through tubes connected to its inner cavity are evenly distributed along the circumferential direction on the lower outer wall of the liquid inlet cylinder, one of the ports of the liquid through tube passes through the fixed tube and is connected to the inner cavity of the fixed cylinder, and a booster pump is provided on the top of the supporting base, and the liquid inlet and liquid discharge port of the booster pump are correspondingly connected to the two liquid discharge valves and the liquid inlet cylinder through connecting pipes.

[0014] As an optimized solution, a vertically arranged lifting and telescopic cylinder is fixedly inserted into the bottom of the lower fixed circular plate, and the telescopic end of the lifting and telescopic cylinder is fixedly connected to the sliding circular plate.

[0015] As an optimized solution, the square tube is fixedly connected to the support base via a plurality of support columns.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. When the primary acid solution in the square tube is heated, the alternating current generates an alternating magnetic field through the coil disc winding. When the magnetic field contacts the metal heating plates on both sides, eddy currents are generated in the metal heating plates. When the eddy currents flow in the metal heating plates, heat is generated, thereby achieving the purpose of heating the two sets of metal heating plates at the same time. The two metal heating plates can be heated at the same time through a coil disc winding, thereby achieving the function of the two sets of metal heating plates heating the primary acid solution at the same time, thereby accelerating the heating speed of the primary acid solution; 2. During the heating of the primary acid solution, the telescopic end of the upper drive telescopic cylinder is extended, and the telescopic end of the lower drive telescopic cylinder is shortened. The upper drive telescopic cylinder and the lower drive telescopic cylinder respectively drive the two sliding plates on the same partition to move in opposite directions. The primary acid solution on one side of the partition flows to the other side of the partition through the serpentine groove on the metal heating plate. Conversely, when the telescopic end of the upper drive telescopic cylinder is shortened and the telescopic end of the lower drive telescopic cylinder is extended, the primary acid solution on the other side of the partition flows to one side of the partition through the serpentine groove on the metal heating plate. In this way, the primary acid solution in the square tube flows back and forth through the inside of the metal heating plate, thereby heating the primary acid solution. Compared with the heating method of transferring heat from the high-temperature area to the surrounding low-temperature areas through the high-temperature area, the heating method of reciprocating through the metal heating plate can reduce the length of the heat transfer path when heating the liquid, greatly reduce the thermal resistance, improve the heat conduction efficiency, and further accelerate the heating speed of the liquid; 3. When extracting bromide ions from the primary acid solution, the driving motor drives the driving shaft and the liquid stirring plate to rotate. The heated primary acid solution enters the liquid inlet cylinder after being pressurized by the booster pump. The primary acid solution in the liquid inlet cylinder enters the fixed cylinder through the liquid pipe and is sprayed upward from the liquid spray pipe. When the sprayed primary acid solution moves upward to the highest position, it contacts the rotating liquid stirring plate. At this time, the initial velocity of the primary acid solution is close to 0. The rotating liquid stirring plate breaks the primary acid solution into water droplets. In the process of falling downward, the water droplets contact and react with the upward flowing chlorine gas. The oxidized bromine is directly heated and gasified by the solution and flows upward with the chlorine gas. The gas is discharged to the outside of the separation tank through the vent hole and the discharge pipe for collection. The primary acid solution can be sprayed upward to increase the retention time of the primary acid solution in the fixed tube, thereby increasing the contact time between the primary acid solution and the chlorine gas. The primary acid solution can be broken into water droplets by the liquid stirring plate, thereby improving the contact effect between the primary acid solution and the chlorine gas. 4. The primary acid solution passes through the fixed cylinder through the built-in tube and falls downward. In the process of the primary acid flowing downward, part of the primary acid solution flows downward along the inner wall of the upper fixed bucket, the transition tube and the lower fixed bucket, and the rest of the primary acid solution flows downward along the outer wall of the fixed column and the connecting column, while the chlorine gas below flows upward through the gap between the upper and lower fixed buckets and the fixed column and the gap between the transition tube and the connecting column. Therefore, the primary acid solution flowing downward forms convection with the chlorine gas flowing upward, thereby further increasing the contact time between the primary acid solution and the chlorine gas, and the primary acid solution flowing downward and the chlorine gas flowing upward are both relatively dispersed, thereby further improving the contact effect between the primary acid solution and the chlorine gas; 5. The primary acid solution falls into the liquid absorbent cotton through the through hole on the built-in circular plate and flows slowly downward. The external chlorine source enters the air intake cylinder through the air intake hose and enters the exhaust cylinder through the vent pipe. The chlorine in the exhaust cylinder is discharged upward through the air leakage hole on the exhaust pipe and passes through the liquid absorbent cotton. The primary acid solution in the liquid absorbent cotton contacts with the chlorine, thereby further increasing the contact time between the primary acid solution and the chlorine. The primary acid solution and the chlorine in the liquid absorbent cotton are evenly distributed, thereby further improving the contact effect between the primary acid solution and the chlorine. In summary, the equipment can also greatly increase the contact time between the primary acid solution and the chlorine, improve the contact effect between the primary acid solution and the chlorine, and then fully oxidize the bromide ions in the primary acid, thereby improving the oxidation rate of the bromide ions in the primary acid; 6. The equipment uses steam-free evaporation technology to extract bromide ions from primary acid. The equipment directly heats the primary acid solution. The heated primary acid solution is fully contacted with chlorine in the separation tank and oxidized. The oxidized bromine in the primary acid solution is directly heated and vaporized by the primary acid solution and blown out together with the chlorine. The equipment eliminates the process of heating water by an electric steam boiler and heating the primary acid solution by water vapor, avoiding the problem of low heat utilization rate caused by short contact time between the primary acid solution and water vapor. Therefore, the equipment has high heat utilization rate, reduces energy waste, and the primary acid solution can fully heat and vaporize the oxidized bromine, so the extraction rate of bromine is high; 7. During the extraction of bromide ions from the primary acid solution, the primary acid solution in the absorbent cotton continuously falls through the exhaust pipe to the bottom of the separation tank for collection. When the primary acid solution in the absorbent cotton is too much and affects the passage of chlorine, the lifting and telescopic cylinder drives the sliding circular plate, the sliding tube and the exhaust pipe to move upward, the absorbent cotton is squeezed, and the primary acid solution in the absorbent cotton is squeezed out and falls through the exhaust pipe to the bottom of the separation tank for collection. After that, the lifting and telescopic cylinder drives the sliding circular plate to reset and continue to extract bromide ions from the primary acid solution, thereby improving the practicability of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for the specific embodiments or the description of the prior art. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn according to the actual scale.

[0018] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 It is a schematic diagram of the structure inside the rectangular support frame of the present invention; Figure 3 It is a schematic structural diagram of the inner side view of the heating assembly of the present invention; Figure 4 It is a schematic diagram of the structure of the interior of the heating assembly of the present invention from a top view; Figure 5 It is a schematic diagram of the structure inside the metal heating plate of the present invention; Figure 6 It is a schematic diagram of the structure of the mixing component and the air intake component of the present invention; Figure 7 It is a schematic diagram of the structure of the interior of the fixed tube of the present invention being located above the fixed cylinder; Figure 8 It is a schematic diagram of the structure of the interior of the fixed tube of the present invention being located below the fixed cylinder; Fig. 9 It is a schematic diagram of the structure inside the sliding tube of the present invention; Fig.10 It is a schematic structural diagram of the liquid inlet cylinder and the air inlet cylinder of the present invention.

[0019] In the figure: 1-support base; 2-support column; 3-heating component; 4-rectangular support frame; 5-liquid filling valve; 6-mixing component; 7-discharge pipe; 8-vent; 9-upper fixed circular plate; 10-fixed pipe; 11-separation tank; 12-support circular plate; 13-lower fixed circular plate; 14-sliding circular plate; 15-intake assembly; 16-waste discharge valve; 17-connecting pipe; 18-boosting pump; 19-liquid discharge valve; 20-support ring; 21-coil disc winding; 22-limiting bracket; 23-sliding plate; 24-partition plate; 25-square tube; 26-metal heating plate; 27-insulation plate; 28-lower support L-shaped plate; 29-lower driving telescopic cylinder; 30-upper driving telescopic cylinder; 31-upper supporting L-shaped plate; 32-snake-shaped groove; 33-driving motor; 34-driving shaft; 35-liquid stirring plate; 36-liquid spraying pipe; 37-fixing cylinder; 38-built-in pipe; 39-through hole; 40-connecting column; 41-fixing column; 42-upper fixed bucket; 43-transition pipe; 44-lower fixed bucket; 45-built-in circular plate; 46-leakage hole; 47-exhaust pipe; 48-sliding pipe; 49-liquid absorbing cotton; 50-exhaust cylinder; 51-liquid passing pipe; 52-lifting telescopic cylinder; 53-intake hose; 54-ventilation pipe; 55-intake cylinder; 56-liquid inlet cylinder. DETAILED DESCRIPTION

[0020] The following embodiments of the technical solution of the present invention are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and are therefore only used as examples, and cannot be used to limit the protection scope of the present invention.

[0021] like Figures 1 to 10 As shown, a high-efficiency and energy-saving evaporation system for extracting bromine from brine comprises a horizontally arranged support base 1, a vertically arranged separation tank 11 is fixedly arranged on the top of the support base 1, a mixing assembly 6 and an air intake assembly 15 are arranged in communication with each other in the upper and lower parts of the separation tank 11, the air intake assembly 15 is connected to an external chlorine source, a heating assembly 3 is arranged on the top of the support base 1, the mixing assembly 6 is connected to the heating assembly 3, and a discharge pipe 7 and a waste valve 16 connected to the inner cavity of the separation tank 11 are fixedly arranged on the top and the lower outer wall thereof; The heating assembly 3 includes a vertically arranged rectangular support frame 4, a vertically arranged support ring 20 is fixedly arranged on the inner wall of the rectangular support frame 4, a coil disc winding 21 is coaxially arranged in the support ring 20, and the inner wall of the support ring 20 located on both sides of the coil disc winding 21 is coaxially fixed with a limit bracket 22 for limiting the coil disc winding 21, both ends of the coil disc winding 21 extend to the outside through the rectangular support frame 4 and are electrically connected to the control module, and the relative ports of the rectangular support frame 4 are fixedly provided with a communicating square tube 25, and the inner wall of the square tube 25 is located near the rectangular support frame 4 and is fixedly provided with a heat insulation plate 27, and the opposite ends of the two heat insulation plates 27 are provided with metal heating plates 26, and the metal heating plate 26 is fixedly connected to the inner wall of the square tube 25. The two metal heating plates 26 The opposite ends are fixedly connected with a vertically arranged partition 24, which is fixedly connected to the inner wall of the square tube 25 and divides the internal space of the square tube 25 into two. The opposite ends of the partition 24 are provided with a sliding plate 23 with a horizontal sliding seal. The two sliding plates 23 on the same partition 24 are slidingly arranged toward or away from each other, and the side walls of the sliding plate 23 are slidingly sealed and connected to the inner wall of the square tube 25. A number of horizontally arranged serpentine grooves 32 are vertically arranged inside the metal heating plate 26. The two ports of the serpentine groove 32 are respectively located on both sides of the partition 24 and pass through the metal heating plate 26 to be connected with the inner cavity of the square tube 25. The top and bottom of the square tube 25 are located on both sides of the partition 24, respectively, with a liquid adding valve 5 and a drain valve 19 connected to its inner cavity, and the drain valve 19 is connected to the mixing component 6.

[0022] The mixing assembly 6 includes a supporting circular plate 12 coaxially fixed to the inner wall of the separation tank 11, and a plurality of fixed pipes 10 are evenly distributed along the circumferential direction on the top of the supporting circular plate 12 and vertically penetrated. The inner wall of the separation tank 11 is coaxially fixed with an upper fixed circular plate 9 and a lower fixed circular plate 13 at positions above and below the supporting circular plate 12, respectively. The lower port of the fixed pipe 10 penetrates the lower fixed circular plate 13 downward and is connected to the air intake assembly 15. The upper port of the fixed pipe 10 is sealed and has a hemispherical structure. The top of the fixed pipe 10 penetrates the upper fixed circular plate 9 upward and is evenly distributed. There are a number of vent holes 8 vertically penetrated, a driving shaft 34 is coaxially arranged at the top of the fixed tube 10, and a number of stirring plates 35 are evenly distributed along the circumferential direction on the lower outer wall of the driving shaft 34, and one end of the stirring plate 35 is inclined downward, and a fixed cylinder 37 is coaxially fixed to the inner wall of the fixed tube 10 below the stirring plate 35, and a liquid spraying pipe 36 connected to the inner cavity of the fixed cylinder 37 is coaxially fixed to the top of the fixed cylinder 37, and a number of vertically arranged built-in tubes 38 are evenly distributed along the circumferential direction inside the fixed cylinder 37, and the upper and lower ports of the built-in tubes 38 extend to The fixed tube 37 is flush with the top and bottom of the fixed tube 37, and the inner cavity of the fixed tube 37 is connected to the drain valve 19. A plurality of coaxially arranged transition tubes 43 are evenly distributed along the axial direction at a position below the fixed tube 37 inside the fixed tube 10. The upper and lower ports of the transition tube 43 are coaxially fixedly connected with the upper fixed bucket 42 and the lower fixed bucket 44 respectively. The upper fixed bucket 42 and the lower fixed bucket 44 are arranged back to back and are fixedly connected to the fixed tube 10. The ends of the upper fixed bucket 42 and the lower fixed bucket 44 facing each other between two adjacent transition tubes 43 are fixedly connected to the fixed tube 10. The upper and lower fixed buckets 42 are respectively provided with coaxially arranged fixing columns 41, the top ends of the fixing columns 41 extend upward to the outside of the upper fixed bucket 42, the top and bottom ends of the fixing columns 41 are both conical structures, and two adjacent fixing columns 41 are connected by connecting columns 40, and the fixing columns 41 located at the top are fixedly connected to the fixing cylinder 37, and the lower inner wall of the fixing tube 10 is coaxially fixed with an internal circular plate 45, and the top of the internal circular plate 45 is evenly distributed with a number of vertically penetrating through holes 39, and the bottom of the internal circular plate 45 is flush with the lower port of the fixing tube 10.

[0023] The air intake assembly 15 includes a sliding circular plate 14 that is vertically slidably connected to the inner wall of the separation tank 11. The bottom of the sliding circular plate 14 is evenly distributed along the circumferential direction with a plurality of sliding tubes 48 that are vertically penetrated. The sliding tubes 48 are fixedly connected to the sliding circular plate 14. The lower ports of the plurality of fixed tubes 10 extend into the plurality of sliding tubes 48 and are slidingly and sealingly connected to the sliding tubes 48. An exhaust pipe 50 is coaxially fixed to the lower inner wall of the sliding tube 48. The exhaust pipe 50 is evenly distributed along the circumferential direction with a plurality of vertically arranged exhaust pipes 47. The upper and lower ports of the exhaust pipe 47 extend to the outside of the exhaust pipe 50 and are flush with the top and bottom of the exhaust pipe 50. The outer wall of the exhaust pipe 47 is located at the exhaust There are a number of leakage holes 46 evenly distributed along the circumferential direction inside the cylinder 50 and inclined upward. A liquid absorbent cotton 49 is provided on the top of the exhaust cylinder 50. The liquid absorbent cotton 49 is in contact with the inner wall of the sliding tube 48 and the bottom of the built-in circular plate 45. An air intake cylinder 55 is coaxially fixed to the bottom of the sliding circular plate 14. A number of ventilation pipes 54 connected to its inner cavity are evenly distributed on the outer wall of the air intake cylinder 55 along the circumferential direction. One of the ports of the ventilation pipe 54 passes through the sliding tube 48 and is connected to the inner cavity of the exhaust cylinder 50. An air intake hose 53 connected to its inner cavity is fixedly provided at the bottom of the air intake cylinder 55. One end of the air intake hose 53 passes through the separation tank 11, extends to the outside and is connected to an external chlorine gas source.

[0024] The upper side wall and the lower side wall of the square tube 25 are respectively fixedly connected with an upper supporting L-shaped plate 31 and a lower supporting L-shaped plate 28. The ends of the upper supporting L-shaped plate 31 and the lower supporting L-shaped plate 28 are respectively fixedly connected with two horizontally arranged upper driving telescopic cylinders 30 and lower driving telescopic cylinders 29. The telescopic ends of the upper driving telescopic cylinder 30 and the lower driving telescopic cylinder 29 are fixedly connected with the two sliding plates 23.

[0025] The top of the driving shaft 34 passes through the fixed pipe 10 upwards. A plurality of driving motors 33 are fixedly provided on the top of the separation tank 11 . The output ends of the driving motors 33 pass through the separation tank 11 and are fixedly connected to the driving shaft 34 .

[0026] A liquid inlet cylinder 56 is coaxially fixed to the top of the supporting circular plate 12, and a plurality of liquid through tubes 51 connected to its inner cavity are evenly distributed along the circumferential direction on the lower outer wall of the liquid inlet cylinder 56. One of the ports of the liquid through tube 51 passes through the fixed tube 10 and is connected to the inner cavity of the fixed tube 37. A booster pump 18 is provided on the top of the supporting base 1, and the liquid inlet and liquid discharge port of the booster pump 18 are connected to the two discharge valves 19 and the liquid inlet cylinder 56 through the connecting pipe 17.

[0027] A vertically arranged lifting and telescopic cylinder 52 is fixedly inserted into the bottom of the lower fixed circular plate 13 , and the telescopic end of the lifting and telescopic cylinder 52 is fixedly connected to the sliding circular plate 14 .

[0028] The square tube 25 is fixedly connected to the support base 1 through a plurality of support columns 2 .

[0029] The working principle of this device is: When the primary acid solution in the square tube 25 is heated, the alternating current generates an alternating magnetic field through the coil disc winding 21. When the magnetic field contacts the metal heating plates 26 on both sides, eddy currents are generated in the metal heating plates 26. When the eddy currents flow in the metal heating plates 26, heat is generated, thereby achieving the purpose of heating the two groups of metal heating plates 26 at the same time. The two metal heating plates 26 can be heated at the same time by one coil disc winding 21, thereby achieving the function of the two groups of metal heating plates 26 heating the primary acid solution at the same time, thereby accelerating the heating speed of the primary acid solution. During the heating process of the primary acid solution, the telescopic end of the upper driving telescopic cylinder 30 is extended, and the telescopic end of the lower driving telescopic cylinder 29 is shortened. The upper driving telescopic cylinder 30 and the lower driving telescopic cylinder 29 respectively drive the two sliding plates 23 on the same partition 24 to move in opposite directions. The primary acid solution on one side of the partition 24 flows to the other side of the partition 24 through the serpentine groove 32 on the metal heating plate 26. On the contrary, when the telescopic end of the upper driving telescopic cylinder 30 is shortened and the telescopic end of the lower driving telescopic cylinder 29 is extended, the primary acid solution on the other side of the partition 24 flows through the serpentine groove 32 on the metal heating plate 26. The serpentine groove 32 on the metal heating plate 26 flows to one side of the partition 24, and the primary acid solution in the square tube 25 flows back and forth through the metal heating plate 26, thereby heating the primary acid solution. Compared with the heating method of transferring heat from the high-temperature area to the surrounding low-temperature areas, the heating method of reciprocating through the metal heating plate 26 can reduce the length of the heat transfer path when heating the liquid, greatly reduce the thermal resistance, improve the heat conduction efficiency, and further accelerate the heating speed of the liquid; When the bromide ions in the primary acid solution are extracted, the driving motor 33 drives the driving shaft 34 and the liquid stirring plate 35 to rotate. The heated primary acid solution enters the liquid inlet cylinder 56 after being pressurized by the booster pump 18. The primary acid solution in the liquid inlet cylinder 56 enters the fixed cylinder 37 through the liquid passage 51 and is sprayed upward from the liquid spraying pipe 36. When the sprayed primary acid solution moves upward to the highest position, it contacts the rotating liquid stirring plate 35. At this time, the initial velocity of the primary acid solution is close to 0, and the rotating liquid stirring plate 35 breaks up the primary acid solution into Water droplets, in the process of falling downward, contact and react with the upward flowing chlorine gas, the oxidized bromine is directly heated and gasified by the solution and flows upward with the chlorine gas, the gas is discharged to the outside of the separation tank 11 through the vent hole 8 and the discharge pipe 7 for collection, the primary acid solution can be sprayed upward to increase the retention time of the primary acid solution in the fixed tube 10, thereby increasing the contact time between the primary acid solution and the chlorine gas, the primary acid solution can be broken into water droplets by the liquid stirring plate 35, thereby improving the contact effect between the primary acid solution and the chlorine gas; The primary acid solution passes through the fixed cylinder 37 through the built-in tube 38 and falls downward. In the process of the primary acid flowing downward, part of the primary acid solution flows downward along the inner walls of the upper fixed bucket 42, the transition tube 43 and the lower fixed bucket 44, and the remaining primary acid solution flows downward along the outer walls of the fixed column 41 and the connecting column 40, while the chlorine gas below flows upward through the gaps between the upper fixed bucket 42 and the lower fixed bucket 44 and the fixed column 41 and the gap between the transition tube 43 and the connecting column 40, so that the primary acid solution flowing downward and the chlorine gas flowing upward form convection, thereby further increasing the contact time between the primary acid solution and the chlorine gas, and the primary acid solution flowing downward and the chlorine gas flowing upward are both relatively dispersed, thereby further improving the contact effect between the primary acid solution and the chlorine gas; The primary acid solution falls into the liquid absorbent cotton 49 through the through hole 39 on the built-in circular plate 45 and flows slowly downward. The external chlorine source enters the air intake cylinder 55 through the air intake hose 53 and enters the exhaust cylinder 50 through the vent pipe 54. The chlorine in the exhaust cylinder 50 is discharged upward through the leakage hole 46 on the exhaust pipe 47 and passes through the liquid absorbent cotton 49. The primary acid solution in the liquid absorbent cotton 49 contacts with the chlorine, thereby further increasing the contact time between the primary acid solution and the chlorine. The primary acid solution and the chlorine in the liquid absorbent cotton 49 are evenly distributed, thereby further improving the contact effect between the primary acid solution and the chlorine. In summary, the device can also greatly increase the contact time between the primary acid solution and the chlorine, improve the contact effect between the primary acid solution and the chlorine, and then fully oxidize the bromide ions in the primary acid, thereby improving the oxidation rate of the bromide ions in the primary acid. The device uses a steam-free evaporation technology to extract bromide ions from the primary acid. The device directly heats the primary acid solution. The heated primary acid solution is fully contacted with chlorine in a separation tank 11 and oxidized. The oxidized bromine in the primary acid solution is directly heated and vaporized by the primary acid solution and blown out together with the chlorine. The device eliminates the process of heating water by an electric steam boiler and heating the primary acid solution by water vapor, thus avoiding the problem of low heat utilization rate caused by the short contact time between the primary acid solution and water vapor. Therefore, the device has a high heat utilization rate, reduces energy waste, and the primary acid solution can fully heat and vaporize the oxidized bromine, so the extraction rate of bromine is high. During the process of extracting bromide ions from the primary acid solution, the primary acid solution in the absorbent cotton 49 continuously drops to the bottom of the separation tank 11 through the exhaust pipe 47 for collection. When the primary acid solution in the absorbent cotton 49 is too much and affects the passage of chlorine, the lifting and telescopic cylinder 52 drives the sliding circular plate 14, the sliding tube 48 and the exhaust pipe 50 to move upward, the absorbent cotton 49 is squeezed, and the primary acid solution in the absorbent cotton 49 is squeezed out and drops to the bottom of the separation tank 11 through the exhaust pipe 47 for collection. After that, the lifting and telescopic cylinder 52 drives the sliding circular plate 14 to reset and continue to extract bromide ions from the primary acid solution, thereby improving the practicability of the equipment.

[0030] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be included in the scope of the claims and specification of the present invention.

Claims

1. High-efficiency and energy-saving evaporation system for extracting bromine from brine, characterized by: The invention comprises a horizontally arranged support base (1), a vertically arranged separation tank (11) being fixedly provided on the top of the support base (1), a mixing assembly (6) and an air intake assembly (15) being arranged in communication with each other in the upper and lower parts of the separation tank (11), the air intake assembly (15) being connected with an external chlorine gas source, a heating assembly (3) being provided on the top of the support base (1), the mixing assembly (6) being connected with the heating assembly (3), and a discharge pipe (7) and a waste discharge valve (16) being fixedly provided on the top and the lower outer wall of the separation tank (11) and being connected with the inner cavity thereof; The heating assembly (3) comprises a vertically arranged rectangular support frame (4), the inner wall of the rectangular support frame (4) being fixedly provided with a vertically arranged support ring (20), a coil disc winding (21) being coaxially arranged in the support ring (20), and the inner wall of the support ring (20) being coaxially fixedly provided with a limiting bracket (22) for limiting the coil disc winding (21) at positions on both sides of the inner wall of the support ring (20), both ends of the coil disc winding (21) extending to the outside through the rectangular support frame (4) and being electrically connected to a control module, and the opposite ends of the rectangular support frame (4) being fixedly provided with a communicating square tube (25), and the inner wall of the square tube (25) being fixedly provided with a heat insulation plate (27) at a position close to the rectangular support frame (4), and the two opposite ends of the two heat insulation plates (27) being provided with a metal heating plate (26), and the metal heating plate (26) being fixedly connected to the inner wall of the square tube (25), and the two metal heating plates (26) being connected to the inner wall of the square tube (25). 6) The opposite ends are fixedly connected with a vertically arranged partition (24), the partition (24) is fixedly connected to the inner wall of the square tube (25) and divides the internal space of the square tube (25) into two, the opposite ends of the partition (24) are provided with a sliding plate (23) with a horizontal sliding seal, the two sliding plates (23) on the same partition (24) are slidably arranged towards or away from each other, the side wall of the sliding plate (23) is slidably sealed with the inner wall of the square tube (25), a plurality of horizontally arranged serpentine grooves (32) are vertically arranged inside the metal heating plate (26), the two ports of the serpentine groove (32) are respectively located on both sides of the partition (24) and pass through the metal heating plate (26) to communicate with the inner cavity of the square tube (25), the top and bottom of the square tube (25) are respectively provided with a liquid adding valve (5) and a liquid drain valve (19) connected to the inner cavity thereof at the positions on both sides of the partition (24), and the liquid drain valve (19) is connected to the mixing component (6).

2. The high-efficiency and energy-saving evaporation system for extracting bromine from brine according to claim 1, characterized in that: The mixing assembly (6) comprises a supporting circular plate (12) coaxially fixed to the inner wall of the separation tank (11); a plurality of fixed tubes (10) are evenly distributed along the circumferential direction on the top of the supporting circular plate (12) and are vertically penetrated; an upper fixed circular plate (9) and a lower fixed circular plate (13) are coaxially fixed to the inner wall of the separation tank (11) at positions above and below the supporting circular plate (12), respectively; a lower port of the fixed tube (10) penetrates downwardly through the lower fixed circular plate (13) and is connected to the air intake assembly (15); an upper port of the fixed tube (10) is sealed and has a hemispherical structure; a top of the fixed tube (10) penetrates upward through the upper fixed circular plate (9) and is evenly distributed with A plurality of vent holes (8) are vertically penetrated, a driving shaft (34) is coaxially arranged at the top of the fixed tube (10) and is rotatably arranged, a plurality of liquid stirring plates (35) are evenly distributed along the circumferential direction on the lower outer wall of the driving shaft (34), one end of the liquid stirring plate (35) is tilted downward, a fixed tube (37) is coaxially fixedly connected to the inner wall of the fixed tube (10) below the liquid stirring plate (35), a liquid spraying tube (36) connected to the inner cavity of the fixed tube (37) is coaxially fixedly connected to the top of the fixed tube (37), and a plurality of vertically arranged built-in tubes (38) are evenly distributed along the circumferential direction inside the fixed tube (37), and the upper and lower ends of the built-in tubes (38) both extend to the fixed tube (10). The outer surface of the cylinder (37) is flush with the top and bottom of the fixed cylinder (37); the inner cavity of the fixed cylinder (37) is connected to the drain valve (19); a plurality of coaxially arranged transition pipes (43) are evenly distributed along the axial direction at a position below the fixed cylinder (37) inside the fixed pipe (10); the upper end and the lower end of the transition pipe (43) are respectively coaxially fixedly connected to an upper fixed bucket (42) and a lower fixed bucket (44) that are arranged in communication; the upper fixed bucket (42) and the lower fixed bucket (44) are arranged opposite to each other and are both fixedly connected to the fixed pipe (10); the ports of the upper fixed bucket (42) and the lower fixed bucket (44) facing each other between two adjacent transition pipes (43) are abutted against each other. A coaxially arranged fixing column (41) is provided in each of the upper fixing buckets (42), the top of each fixing column (41) extending upward to the outside of the upper fixing bucket (42), the top and bottom of each fixing column (41) being conical structures, two adjacent fixing columns (41) being connected via a connecting column (40), the fixing column (41) located at the top being fixedly connected to the fixing cylinder (37), a built-in circular plate (45) being coaxially fixedly connected to the lower inner wall of the fixing tube (10), a plurality of vertically penetrating through holes (39) being evenly distributed on the top of each fixing column (41), and a bottom of each built-in circular plate (45) being flush with the lower end of the fixing tube (10).

3. The high-efficiency and energy-saving evaporation system for extracting bromine from brine according to claim 2, characterized in that: The air intake assembly (15) comprises a sliding circular plate (14) vertically slidably connected to the inner wall of the separation tank (11); a plurality of sliding tubes (48) vertically penetrate the bottom of the sliding circular plate (14) uniformly distributed along the circumferential direction; the sliding tubes (48) are fixedly connected to the sliding circular plate (14); lower ports of the plurality of fixed tubes (10) extend into the plurality of sliding tubes (48) and are slidingly and sealingly connected to the sliding tubes (48); an exhaust pipe (50) is coaxially fixedly connected to the lower inner wall of the sliding tube (48); a plurality of vertically arranged exhaust pipes (47) are uniformly distributed along the circumferential direction inside the exhaust pipe (50); upper ports and lower ports of the exhaust pipes (47) extend outside the exhaust pipe (50) and are flush with the top and bottom of the exhaust pipe (50); the outer wall of the exhaust pipe (47) is located at the exhaust pipe (50); A plurality of leakage holes (46) arranged obliquely upward are evenly distributed in the circumferential direction inside the air cylinder (50); a liquid absorbent cotton (49) is provided at the top of the exhaust cylinder (50); the liquid absorbent cotton (49) is in contact with the inner wall of the sliding tube (48) and the bottom of the built-in circular plate (45); an air intake cylinder (55) is coaxially fixedly connected to the bottom of the sliding circular plate (14); a plurality of ventilation pipes (54) connected to the inner cavity of the air intake cylinder (55) are evenly distributed in the circumferential direction on the outer wall of the air intake cylinder (55); one of the ports of the ventilation pipes (54) passes through the sliding tube (48) and is connected to the inner cavity of the exhaust cylinder (50); an air intake hose (53) connected to the inner cavity of the air intake cylinder (55) is fixedly provided at the bottom of the air intake cylinder (55); one end of the air intake hose (53) passes through the separation tank (11) and extends to the outside and is connected to an external chlorine gas source.

4. The high-efficiency and energy-saving evaporation system for extracting bromine from brine according to claim 1, characterized in that: An upper supporting L-shaped plate (31) and a lower supporting L-shaped plate (28) are fixedly connected to the upper side wall and the lower side wall of the square tube (25), respectively. The ends of the upper supporting L-shaped plate (31) and the lower supporting L-shaped plate (28) are fixedly connected to two horizontally arranged upper driving telescopic cylinders (30) and lower driving telescopic cylinders (29), respectively. The telescopic ends of the upper driving telescopic cylinder (30) and the lower driving telescopic cylinder (29) are fixedly connected to the two sliding plates (23) respectively.

5. The high-efficiency and energy-saving evaporation system for extracting bromine from brine according to claim 2, characterized in that: The top of the driving shaft (34) passes through the fixed pipe (10) upwards, and a plurality of driving motors (33) are fixedly provided on the top of the separation tank (11). The output ends of the driving motors (33) pass through the separation tank (11) and are fixedly connected to the driving shaft (34).

6. The high-efficiency and energy-saving evaporation system for extracting bromine from brine according to claim 2, characterized in that: A liquid inlet cylinder (56) is coaxially fixedly connected to the top of the support circular plate (12); a plurality of liquid through tubes (51) connected to the inner cavity of the liquid inlet cylinder (56) are evenly distributed along the circumferential direction on the lower outer wall of the liquid inlet cylinder (56); one of the ports of the liquid through tubes (51) passes through the fixed tube (10) and is connected to the inner cavity of the fixed tube (37); a booster pump (18) is provided on the top of the support base (1); a liquid inlet and a liquid discharge port of the booster pump (18) are connected to two liquid discharge valves (19) and the liquid inlet cylinder (56) via a connecting tube (17).

7. The high-efficiency and energy-saving evaporation system for extracting bromine from brine according to claim 3 is characterized in that: A vertically arranged lifting and telescopic cylinder (52) is fixedly inserted into the bottom of the lower fixed circular plate (13), and the telescopic end of the lifting and telescopic cylinder (52) is fixedly connected to the sliding circular plate (14).

8. The high-efficiency and energy-saving evaporation system for extracting bromine from brine according to claim 1, characterized in that: The square tube (25) is fixedly connected to the support base (1) via a plurality of support columns (2).

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