Production equipment and method of sodium trifluoroacetate

Abstract

The invention relates to the field of sodium trifluoroacetate production, and discloses sodium trifluoroacetate production equipment and method.The sodium trifluoroacetate production equipment comprises a bottom plate, a reaction tank is fixedly connected to the top end of the left side of the bottom plate, a heating concentration tank is fixedly connected to the surface of the center of the bottom plate, and a centrifugal tank is fixedly connected to the surface of the right side of the bottom plate; a drain valve is arranged at the bottom end of the outer wall of the centrifugal tank, an exhaust valve is arranged at the top end of the heating concentration tank, and an upper cover is detachably mounted at the top end of the outer wall of the centrifugal tank through bolts. A sliding plate drives a rack to be linked with a gear and drives a rotary valve plate to quantitatively control the discharging amount of a raw material liquid storage barrel, proportional errors of traditional manual feeding are avoided, it is ensured that trifluoroacetic acid and sodium hydroxide react according to the optimal proportion, meanwhile, a liquid discharging pipe b achieves reciprocating swing through a connecting rod assembly, and flexible deformation of a corrugated hose is matched; the raw materials are uniformly sprayed on the inner wall of the reaction tank, so that sputtering and volatilization caused by direct impact on the liquid level are avoided.

Description

Technical Field

[0001] The present invention relates to the field of sodium trifluoroacetate production, and in particular to a sodium trifluoroacetate production device and method. Background Art

[0002] Sodium trifluoroacetate, as an important fluorine-containing fine chemical, is widely used in pharmaceutical synthesis, pesticide preparation, and new material research and development. Its production process mainly relies on the neutralization reaction of trifluoroacetic acid and sodium hydroxide, and is subsequently prepared through steps such as concentration, crystallization, and separation.

[0003] The core reaction is an exothermic reaction in a highly corrosive system, which places extremely high demands on the uniformity of raw material mixing, reaction temperature control, and product separation purity. The stability and efficiency of the equipment directly affect product quality and production efficiency.

[0004] Existing sodium trifluoroacetate production equipment has many limitations in practical applications: the raw material mixing process mostly adopts simple stirring or direct pouring methods, which easily leads to excessively high local concentrations of trifluoroacetic acid and sodium hydroxide. This not only causes violent heat release and raw material volatilization loss, but also reduces raw material utilization due to insufficient reaction and even produces by-products that affect purity. Therefore, a sodium trifluoroacetate production equipment and method are proposed to solve the above problems. Summary of the Invention

[0005] The object of the present invention is to solve the problems raised in the above-mentioned background technology, and then propose a production device and method for sodium trifluoroacetate. The present invention drives a rack and a gear in linkage through a sliding plate to drive a rotary valve plate to quantitatively control the discharge amount of the raw material storage barrel, thereby avoiding the proportional error of traditional manual feeding and ensuring that trifluoroacetic acid and sodium hydroxide react in an optimal proportion. At the same time, the liquid discharge pipe b is reciprocated by a connecting rod assembly, and the flexible deformation of the corrugated hose is combined to uniformly spray the raw material on the inner wall of the reaction tank, thereby avoiding volatilization and intense heat release caused by sputtering caused by direct impact on the liquid surface. At the same time, the stirring blade assembly realizes the up and down swinging of the stirring blade during the rotation process through the hinged structure of the protrusion and the connecting block, and the mixing uniformity is greatly improved in combination with the diversion effect of the liquid separator rod on the liquid.

[0006] The technical solution adopted by the present invention to solve the technical problem is: A sodium trifluoroacetate production device comprises a base plate, wherein a reaction tank is fixedly connected to the left top end of the base plate, a heating and concentrating tank is fixedly connected to the surface at the center of the base plate, a centrifugal tank is fixedly connected to the right surface of the base plate, a drain valve is provided at the bottom end of the outer wall of the centrifugal tank, an exhaust valve is provided at the top end of the heating and concentrating tank, an upper cover is detachably mounted on the top end of the outer wall of the centrifugal tank via bolts, a motor b is fixedly connected to the bottom end of the outer wall of the centrifugal tank, a positioning shaft is fixedly connected to the output shaft of the motor b, the outer wall of the top end of the positioning shaft contacts a filter cartridge, a high-efficiency liquid mixing mechanism is provided on the inner wall of the top end of the reaction tank, and two sets of raw material liquid storage barrels are fixedly connected to the top end of the outer wall of the reaction tank; The transmission mechanism that this invention relates to is that this invention relates to a gear train which is fixedly mounted on a gear train of said motor a and which has a top end mounted on a gear train of said motor a and a bottom end mounted on said gear train of said motor a. The gear train which is fixedly mounted on a gear train of said motor a and which has a top end mounted on a gear train of said motor a.

[0007] Preferably, the top end of the outer wall of the sliding plate is fixedly connected to two sets of left and right racks, the outer walls of the two sets of racks are meshed with gears, the rotation center axis of the gear is fixedly connected to a connecting shaft, and the rotating valve plate is rotatably connected to the rotation center axis of the end of the connecting shaft away from the gear.

[0008] Preferably, the stirring blade assembly includes a protrusion, the inner side wall of the protrusion is hinged with a connecting block, the end of the connecting block away from the protrusion is fixedly connected to the stirring blade, the surface of the stirring blade is provided with multiple groups of through grooves, and the inner wall of the stirring blade through groove is fixedly connected to a liquid separating rod.

[0009] Preferably, the motor a is fixedly connected to the center of the top surface of the reaction tank, and the rotating shaft is rotatably connected to the center of the inner side wall of the reaction tank.

[0010] Preferably, a slot is provided at the center of the sliding plate, and an inner wall of the slot of the sliding plate contacts the outer surface of the rotating shaft.

[0011] Preferably, the top end of the outer wall of the filter cartridge contacts the bottom end of the outer wall of the upper cover, the outer arc surface of the filter cartridge contacts the inner side wall of the centrifugal tank, and the positioning shaft is rotatably connected to the center of the bottom end of the centrifugal tank.

[0012] Preferably, the downpipe a is fixedly connected to the top of the inner wall of the reaction tank, the rotating block is rotatably connected to the outer side wall of the bottom end of the downpipe a, a group of booster pumps A is provided between the reaction tank and the heating and concentration tank, and another group of booster pumps B is provided between the heating and concentration tank and the centrifugal tank.

[0013] Preferably, a guide groove is provided on the inner wall of the top of the reaction tank, the rack passes through and is slidably connected to the inner wall of the guide groove at the top of the reaction tank, the connecting shaft passes through and is rotatably connected to the inner side wall of the raw material storage barrel, and the outer side wall of the rotary valve plate is in contact with the inner side wall of the raw material storage barrel.

[0014] Preferably, the protrusions are provided in multiple groups, and the protrusions are fixedly connected to the outer arc surface of the rotating shaft.

[0015] A method for producing sodium trifluoroacetate comprises the following steps: S1: Raw material mixing reaction: Trifluoroacetic acid and sodium hydroxide are placed in two sets of raw material liquid storage barrels at the top of the reaction tank, respectively. The motor a at the top of the reaction tank is started, and its output shaft drives the rotating shaft to rotate. The annular corrugated groove on the outer arc surface of the top of the rotating shaft drives the cylindrical block to slide up and down reciprocatingly, thereby driving the sliding plate to move up and down synchronously along the rotating shaft. The two sets of racks at the top of the sliding plate slide in the guide groove on the inner wall of the top of the reaction tank, providing guidance for the movement of the sliding plate; When the rack moves up and down, it engages with the gear to rotate. The gear drives the rotary valve plate in the raw material storage barrel to rotate through the connecting shaft, realizing quantitative discharge of raw materials. The raw materials enter the downpipe b through the downpipe a and the corrugated hose. At the same time, when the sliding plate moves up and down, the slider moves in its slide groove, and drives the rotating block to rotate through the connecting rod a. The rotating block drives the connecting rod b to rotate, causing the convex rod to slide in the slide groove of the connecting rod b, thereby driving the downpipe b to swing back and forth, spraying the raw materials evenly on the inner side wall of the reaction tank. The stirring blade assembly on the outside of the rotating shaft works synchronously. The protrusion rotates with the rotating shaft, driving the connecting block to swing up and down, causing the inclined stirring blade to swing up and down while rotating. Cooperating with the liquid separation rod in the stirring blade groove, the sprayed raw materials are fully mixed with the liquid in the reaction tank, accelerating the reaction of trifluoroacetic acid and sodium hydroxide to produce sodium trifluoroacetate solution. S2: Heating and concentrating. When the raw material mixing reaction in the reaction tank is completed, the booster pump A between the reaction tank and the heating and concentrating tank is started to transport the reacted mixed liquid to the heating and concentrating tank. The mixed liquid in the heating and concentrating tank is heated to evaporate the water in the mixed liquid to form steam. At this time, the exhaust valve at the top of the heating and concentrating tank is opened to discharge the steam in time to maintain the pressure in the tank stable. The heating is continued to concentrate the mixed liquid, and finally a thick liquid containing sodium trifluoroacetate crystals is formed; S3: Centrifugal separation. After the concentration is completed, the booster pump B between the heating concentration tank and the centrifuge tank is started to transport the thick liquid to the filter cartridge in the centrifuge tank. The upper cover at the top of the centrifuge tank is closed and fixed to the top of the outer wall of the centrifuge tank with bolts. The motor b at the bottom of the outer wall of the centrifuge tank is started. Its output shaft drives the positioning shaft to rotate. Since the cross groove at the bottom of the filter cartridge fits with the top of the positioning shaft, the positioning shaft drives the filter cartridge to rotate synchronously. Under the action of centrifugal force, the mother liquor in the thick liquid is thrown to the inner side wall of the centrifuge tank through the pores of the filter cartridge. Then, the drain valve at the bottom of the outer wall of the centrifuge tank is opened to discharge the mother liquor. After the centrifugation is completed, special tools are used to remove the bolts connecting the upper cover and the centrifuge tank, remove the upper cover, and then remove the filter cartridge from the centrifuge tank to obtain sodium trifluoroacetate crystals.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention uses a sliding plate to drive the rack and gear in linkage, driving the rotary valve to quantitatively control the discharge amount of the raw material storage barrel, avoiding the proportional error of traditional manual feeding and ensuring that trifluoroacetic acid and sodium hydroxide react in the optimal ratio. At the same time, the liquid discharge pipe B is reciprocated by the connecting rod assembly, and the flexible deformation of the corrugated hose is combined to evenly spray the raw materials onto the inner wall of the reaction tank, avoiding the splashing caused by direct impact on the liquid surface, resulting in volatilization and intense heat release.

[0017] 2. The present invention realizes the up and down swinging of the stirring blade during the rotation process through the hinged structure of the protrusion and the connecting block of the stirring blade assembly, and combines the diversion effect of the liquid separator rod on the liquid to greatly improve the mixing uniformity.

[0018] 3. The present invention heats the concentration tank and accurately controls steam emission through the exhaust valve to maintain stable pressure in the tank. It cooperates with the quantitative delivery of two sets of booster pumps to ensure that the solution concentration increases evenly during the concentration process and the crystal particles are of uniform size. In the centrifugal separation link, the filter cartridge precisely fits with the positioning shaft through the cross groove and realizes high-speed and stable rotation under the drive of motor B. The mother liquor is quickly separated through the pores of the filter cartridge and discharged centrally through the drain valve. The independent design of the detachable upper cover and the filter cartridge facilitates the rapid removal of crystals and reduces impurity contamination.

[0019] 4. The present invention adopts a production method in which each step from raw material mixing, heating and concentration to centrifugal separation is closely connected and completed automatically, thereby reducing manual intervention and improving production stability and consistency. At the same time, the equipment can be adjusted according to different production needs, has strong adaptability, and can meet the production of sodium trifluoroacetate of different scales and purity requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the device in the present invention; Figure 2 This is a partial cross-sectional structural diagram of the centrifugal tank of the device of the present invention; Figure 3 This is a partial cross-sectional structural diagram of the reaction tank of the device of the present invention; Figure 4 This is a partial cross-sectional structural diagram of the reaction tank and raw material liquid storage barrel of the equipment of the present invention; Figure 5 This is a schematic structural diagram of the device of the present invention in a state where the sliding plate and the rotating shaft are separated; Figure 6 This is a schematic diagram of the structure of the sliding plate of the device of the present invention from a top view; Figure 7 This is a partial cross-sectional structural diagram of the raw material liquid storage barrel of the equipment in the present invention; Figure 8 This is a schematic diagram of the three-dimensional structure of the stirring blade assembly of the equipment in the present invention.

[0021] Wherein: 1. Bottom plate; 2. Reaction tank; 3. Heating and concentrating tank; 4. Exhaust valve; 5. Centrifugal tank; 6. Drain valve; 7. Upper cover; 8. Booster pump A; 9. High-efficiency liquid mixing mechanism; 901. Motor a; 902. Rotating shaft; 903. Annular corrugated groove; 904. Stirring blade assembly; 9041. Bump; 9042. Connecting block; 9043. Stirring blade; 9044. Dispensing rod; 905. Sliding plate; 906. Rack; 907. Slider; 908. Connecting rod a; 909. Downpipe a; 910. Corrugated hose; 911. Downpipe b; 912. Protruding rod; 913. Rotating block; 914. Connecting rod b; 915. Cylindrical block; 916. Rotating valve disc; 917. Connecting shaft; 918. Gear; 10. Motor b; 11. Positioning shaft; 12. Filter cartridge; 13. Raw material storage tank; 14. Booster pump B. DETAILED DESCRIPTION

[0022] It should be noted that the following detailed descriptions are illustrative and intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which the present application belongs.

[0023] like Figure 1-Figure 3As shown, an embodiment of the present invention is: a production equipment for sodium trifluoroacetate, comprising a bottom plate 1, a reaction tank 2 is fixedly connected to the top left side of the bottom plate 1, a heating and concentrating tank 3 is fixedly connected to the surface at the center of the bottom plate 1, and a centrifuge tank 5 is fixedly connected to the right surface of the bottom plate 1. By providing the bottom plate 1, the reaction tank 2, the heating and concentrating tank 3 and the centrifuge tank 5 can be stably supported to produce sodium trifluoroacetate. A group of booster pumps A8 is provided between the reaction tank 2 and the heating and concentrating tank 3, and another group of booster pumps B14 is provided between the heating and concentrating tank 3 and the centrifuge tank 5. By providing two groups of booster pumps A8 and booster pumps B14, the raw materials after the mixed reaction in the reaction tank 2 are transported to the interior of the heating and concentrating tank 3 for heating and concentration. The raw materials after concentration are transported to the interior of the centrifuge tank 5 by the right booster pump B14 for centrifugal drying to separate the mother liquor from the crystals.

[0024] like Figure 1 and Figure 2 and Figure 5 As shown, a drain valve 6 is provided at the bottom end of the outer wall of the centrifuge tank 5. By opening the drain valve 6, the mother liquor after centrifugation in the centrifuge tank 5 can be discharged. An exhaust valve 4 is provided at the top of the heating and concentrating tank 3. By providing the exhaust valve 4, the steam after the raw liquid is heated in the heating and concentrating tank 3 is discharged. The top end of the outer wall of the centrifuge tank 5 is detachably mounted with an upper cover 7 by bolts. The upper cover 7 can be disassembled by repeatedly rotating the bolts with a special tool, so as to facilitate the removal of the crystals in the filter cartridge 12 after internal centrifugal filtration. The bottom end of the outer wall of the centrifuge tank 5 is fixedly connected to a motor b10, and the output shaft of the motor b10 is fixedly connected to a positioning shaft 11. The positioning shaft 11 is rotatably connected to the center of the bottom end of the centrifuge tank 5. The outer wall of the top end of the positioning shaft 11 contacts the filter cartridge 12, and the bottom end of the filter cartridge 12 is provided with a fitting for the positioning shaft 1 1, so that when the filter cartridge 12 is installed in the interior of the centrifuge tank 5, the cross groove at its bottom end will contact the top of the positioning shaft 11, so that when the positioning shaft 11 rotates, it will drive the filter cartridge 12 to rotate synchronously, thereby centrifuging the raw liquid entering the interior to separate the mother liquor and the crystals, the top of the outer wall of the filter cartridge 12 contacts the bottom end of the outer wall of the upper cover 7, and the outer arc surface of the filter cartridge 12 contacts the inner side wall of the centrifuge tank 5. The inner wall of the top of the reaction tank 2 is provided with a high-efficiency liquid mixing mechanism 9, and the top of the outer wall of the reaction tank 2 is fixedly connected with two groups of raw material liquid storage barrels 13. By providing two groups of raw material liquid storage barrels 13, the two raw materials of sodium trifluoroacetate: trifluoroacetic acid and sodium hydroxide can be conveniently placed in different areas, and the top of the reaction tank 2 is provided with a feed port, which is connected to the bottom end of the raw material liquid storage barrel 13 and the lower liquid pipe a909.

[0025] like Figure 4-Figure 6As shown, the efficient liquid mixing mechanism 9 includes a motor a901, the output shaft of the motor a901 is fixedly connected to the rotating shaft 902, the motor a901 is fixedly connected to the center of the top surface of the reaction tank 2, and the rotating shaft 902 is rotatably connected to the center of the inner side wall of the reaction tank 2. When the motor a901 is started, it will drive the rotating shaft 902 to rotate synchronously. The outer arc surface of the top of the rotating shaft 902 is provided with an annular corrugated groove 903, and the inner wall of the annular corrugated groove 903 is slidably connected to a cylindrical block 915. The inner diameter of the annular corrugated groove 903 is matched with the outer diameter of the cylindrical block 915, so that when the rotating shaft 902 rotates, it will drive the cylindrical block 915 to slide back and forth up and down on the inner side of the annular corrugated groove 903, and the cylindrical block 915 is away from One end of the annular corrugated groove 903 is fixedly connected to a sliding plate 905, and an empty groove is provided at the center of the sliding plate 905. The inner wall of the empty groove of the sliding plate 905 contacts the outer surface of the rotating shaft 902. When the cylindrical block 915 slides up and down reciprocatingly on the inner side of the annular corrugated groove 903, it will also drive the sliding plate 905 to move up and down synchronously on the outer surface of the rotating shaft 902. Two sets of sliding grooves are provided on the surface of the front end of the sliding plate 905. The inner wall of the sliding groove of the sliding plate 905 is slidably connected to a slider 907. The surface of the slider 907 is hinged with a connecting rod a908. The end of the connecting rod a908 away from the slider 907 is fixedly connected to a rotating block 913. The bottom end of the outer wall of the rotating block 913 is fixedly connected to a connecting rod b914. The surface of the connecting rod b914 A sliding groove is provided on the surface, and the inner wall of the connecting rod b914 sliding groove contacts the protruding rod 912, and the rear end of the protruding rod 912 is fixedly connected to the lower liquid pipe b911. When the sliding plate 905 moves up and down, the rotating block 913 is hinged on the outer diameter of the lower liquid pipe a909, so that the descent of the sliding plate 905 will allow the slider 907 to move in its sliding groove. At the same time, the connecting rod a908 hinged on the surface of the slider 907 will drive the rotating block 913 to rotate. At the same time, during the rotation process of the rotating block 913, it will drive the connecting rod b914 fixed at its bottom end to rotate synchronously around the rotation center point of the rotating block 913, thereby driving the protruding rod 912 to slide on the inner wall of the connecting rod b914 sliding groove, thereby driving the lower liquid pipe b911 to swing back and forth. Thereby, the raw liquid inside can be sprayed back and forth on the inner side wall of the reaction tank 2, avoiding direct contact with the sputtering of the internal raw liquid, thereby avoiding reaction. The top end of the outer wall of the downpipe b911 is fixedly connected with a corrugated hose 910, and the top end of the outer wall of the corrugated hose 910 is fixedly connected with a downpipe a909. The material of the corrugated hose 910 is a metal woven mesh, which has its own deformation effect, so that when the protruding rod 912 drives the downpipe b911 to swing back and forth, the corrugated hose 910 will bend. The downpipe a909 is fixedly connected to the top end of the inner wall of the reaction tank 2, and the rotating block 913 is rotatably connected to the outer side wall of the bottom end of the downpipe a909. The outer side wall of the rotating shaft 902 is provided with a stirring blade assembly 904.

[0026] like Figure 4 、 Figure 5 and Figure 7 As shown, the top of the outer wall of the sliding plate 905 is fixedly connected with two sets of left and right racks 906, and the inner wall of the top of the reaction tank 2 is provided with a guide groove. The rack 906 passes through and is slidably connected to the inner wall of the guide groove at the top of the reaction tank 2. By fixing two sets of racks 906 on the top of the sliding plate 905, while only being able to slide up and down on the inner wall of the top of the reaction tank 2, it can provide guidance for the up and down movement of the sliding plate 905. The outer walls of the two sets of racks 906 are meshed with gears 918, and the rotation center axis of the gear 918 is fixedly connected to the connecting shaft 917. When the rack 906 follows the sliding plate 905 to swing back and forth up and down, it will mesh with the gear 918 rotates, and the connecting shaft 917 is rotatably connected to the rotating center axis at one end of the gear 918, and the connecting shaft 917 passes through and is rotatably connected to the inner side wall of the raw material storage barrel 13. The outer side wall of the rotary valve plate 916 contacts the inner side wall of the raw material storage barrel 13. When the gear 918 is subjected to the reciprocating up and down rotation of the rack 906, it will drive the connecting shaft 917 to rotate, thereby driving the rotary valve plate 916 to rotate on the inner side of the raw material storage barrel 13, thereby quantitatively discharging the internal raw liquid to avoid excessive discharging at one time, resulting in errors in the mixing ratio and low processing efficiency.

[0027] like Figure 3 and Figure 8 As shown, the stirring blade assembly 904 includes a protrusion 9041, and the protrusion 9041 is provided with multiple groups. The protrusion 9041 is fixedly connected to the outer arc surface of the rotating shaft 902. The inner side wall of the protrusion 9041 is hinged with a connecting block 9042. The connecting block 9042 can only rotate up and down on the inner side wall of the protrusion 9041. The end of the connecting block 9042 away from the protrusion 9041 is fixedly connected to a stirring blade 9043. The stirring blade 9043 is fixed on the surface of the connecting block 9042 in an inclined shape. The surface of the stirring blade 9043 is open. There are multiple groups of through grooves, and the inner walls of the through grooves of the stirring blades 9043 are fixedly connected to the liquid separation rods 9044. When the rotating shaft 902 rotates, it will drive the multiple groups of protrusions 9041 to rotate synchronously. At the same time, the connecting block 9042 can only swing up and down on the inner side of the protrusion 9041, thereby driving the multiple groups of inclined stirring blades 9043 to rotate and also swing up and down. Secondly, the liquid separation rods 9044 are installed at the through grooves on the surface of the stirring blades 9043, so that the mixing effect of trifluoroacetic acid and sodium hydroxide is better.

[0028] Working principle: The base plate 1 serves as the bearing foundation of the equipment. The reaction tank 2 is fixed on the top of its left side, the heating and concentration tank 3 is fixed in the center, and the centrifuge tank 5 is fixed on the right surface, providing stable support for the three and ensuring the stability of the equipment structure during the production process. A booster pump A8 and a booster pump B14 are installed between the reaction tank 2 and the heating and concentration tank 3, and between the heating and concentration tank 3 and the centrifuge tank 5. The two groups constitute the power core of material transportation: the booster pump A8 on the left pumps the mixed reaction raw materials in the reaction tank 2 into the heating and concentration tank 3, and the booster pump B14 on the right transports the concentrated raw materials to the centrifuge tank 5, realizing the orderly flow of materials between the various processes.

[0029] The two groups of raw material storage barrels 13 on the outer wall of the top of the reaction tank 2 store trifluoroacetic acid and sodium hydroxide respectively. The feed port at the top of the reaction tank 2 is connected with the bottom of the raw material storage barrel 13, providing a channel for the input of raw materials. The efficient liquid mixing mechanism 9 inside it realizes precise mixing.

[0030] After the motor a901 is started, it drives the rotating shaft 902 to rotate. The annular corrugated groove 903 on the outer arc surface of the top of the rotating shaft 902 drives the cylindrical block 915 to slide back and forth, thereby causing the sliding plate 905 to move up and down synchronously along the rotating shaft 902. The central hollow groove of the sliding plate 905 contacts the outer surface of the rotating shaft 902, and cooperates with the rack 906 at its top that passes through the guide groove of the reaction tank 2 to provide a guide for the movement of the sliding plate 905 to ensure the stability of the movement. When the sliding plate 905 moves up and down, the slider 907 in the front slide groove drives the connecting rod a908 to swing, causing the rotating block 913 to rotate at the bottom end of the lower liquid pipe a909, thereby The cooperation between b914 and the protruding rod 912 drives the downpipe b911 to swing back and forth. The corrugated hose 910 at the top of the downpipe b911 is in the shape of a metal woven mesh and can be deformed and bent with the swinging, so that the raw materials are sprayed back and forth on the inner side wall of the reaction tank 2 through the downpipe b911 to avoid direct impact on the liquid in the tank and causing splashing. At the same time, the rack 906 at the top of the sliding plate 905 engages with the gear 918 to rotate, and the gear 918 drives the rotary valve plate 916 in the raw material storage barrel 13 to rotate through the connecting shaft 917. The rotary valve plate 916 contacts the inner side wall of the raw material storage barrel 13, and its rotation realizes the quantitative discharge of raw materials to avoid imbalance in proportion.

[0031] The stirring blade assembly 904 outside the rotating shaft 902 enhances mixing: the protrusion 9041 rotates with the rotating shaft 902, driving the connecting block 9042 to swing up and down, causing the inclined stirring blade 9043 to swing up and down while rotating. In conjunction with the liquid separation rod 9044 in the groove of the stirring blade 9043, the sprayed raw materials are fully mixed with the liquid in the tank, accelerating the reaction to form a sodium trifluoroacetate solution.

[0032] The reaction-completed mixed liquid enters the heating and concentration tank 3 through the left-side booster pump A8. The mixed liquid is heated in the tank to evaporate the water to form steam. The exhaust valve 4 at the top of the heating and concentration tank 3 can discharge the steam in time to maintain the pressure in the tank stable, thereby promoting the concentration of the mixed liquid into a thick liquid containing sodium trifluoroacetate crystals.

[0033] The concentrated thick liquid is sent to the filter cartridge 12 in the centrifuge tank 5 by the right-side booster pump B14. The motor b10 at the bottom end of the centrifuge tank 5 is started, and the output shaft drives the filter cartridge 12 to rotate through the positioning shaft 11. The cross groove at the bottom end of the filter cartridge 12 fits with the top end of the positioning shaft 11 to ensure synchronous rotation. Under the action of centrifugal force, the mother liquor is thrown to the inner wall of the centrifuge tank 5 through the pores of the filter cartridge 12 and is finally discharged through the bottom drain valve 6; the sodium trifluoroacetate crystals remain in the filter cartridge 12. After centrifugation is completed, the bolt connection of the upper cover 7 at the top of the centrifuge tank 5 is removed by special tools, and the crystals in the filter cartridge 12 can be taken out to complete the separation.

[0034] This embodiment also provides a method for producing sodium trifluoroacetate, comprising the following steps: S1: Raw materials are mixed and reacted. Trifluoroacetic acid and sodium hydroxide are placed in two sets of raw material liquid storage barrels 13 at the top of the reaction tank 2, respectively. The motor a901 at the top of the reaction tank 2 is started. Its output shaft drives the rotating shaft 902 to rotate. The annular corrugated groove 903 on the outer arc surface of the top of the rotating shaft 902 drives the cylindrical block 915 to slide back and forth, thereby driving the sliding plate 905 to move up and down synchronously along the rotating shaft 902. The two sets of racks 906 at the top of the sliding plate 905 slide in the guide groove on the inner wall of the top of the reaction tank 2, providing guidance for the movement of the sliding plate 905. When the rack 906 moves up and down, it engages with the gear 918 to rotate. The gear 918 drives the rotary valve plate 916 in the raw material storage barrel 13 to rotate through the connecting shaft 917, thereby realizing quantitative discharge of the raw materials. The raw materials enter the downpipe b911 through the downpipe a909 and the corrugated hose 910. At the same time, when the sliding plate 905 moves up and down, the slider 907 moves in its chute, and drives the rotating block 913 to rotate through the connecting rod a908. The rotating block 913 drives the connecting rod b914 to rotate, causing the protruding rod 912 to slide in the chute of the connecting rod b914, thereby driving the downpipe b911 to swing back and forth, and evenly spraying the raw materials on the inner side wall of the reaction tank 2; The stirring blade assembly 904 on the outside of the rotating shaft 902 operates synchronously. The protrusion 9041 rotates with the rotating shaft 902, driving the connecting block 9042 to swing up and down. This causes the inclined stirring blade 9043 to swing up and down while rotating. This cooperates with the liquid separation rod 9044 in the groove of the stirring blade 9043 to fully mix the sprayed raw materials with the liquid in the reaction tank 2, accelerating the reaction of trifluoroacetic acid and sodium hydroxide to produce a sodium trifluoroacetate solution. S2: Heating and concentrating. When the raw material mixing reaction in the reaction tank 2 is completed, the booster pump A8 between the reaction tank 2 and the heating and concentrating tank 3 is started to transport the reacted mixed liquid to the heating and concentrating tank 3. The mixed liquid in the heating and concentrating tank 3 is heated to evaporate the water in the mixed liquid to form steam. At this time, the exhaust valve 4 at the top of the heating and concentrating tank 3 is opened to discharge the steam in time to maintain the pressure in the tank stable. The heating is continued to concentrate the mixed liquid, and finally a thick liquid containing sodium trifluoroacetate crystals is formed; S3: After centrifugal separation and concentration are completed, the booster pump B14 between the heating concentration tank 3 and the centrifuge tank 5 is started to transport the thick liquid to the filter cartridge 12 in the centrifuge tank 5. The upper cover 7 at the top of the centrifuge tank 5 is closed and fixed to the top of the outer wall of the centrifuge tank 5 with bolts. The motor b10 at the bottom of the outer wall of the centrifuge tank 5 is started, and its output shaft drives the positioning shaft 11 to rotate. Since the cross groove at the bottom end of the filter cartridge 12 fits with the top end of the positioning shaft 11, the positioning shaft 11 will drive the filter cartridge 12 to rotate synchronously; Under the action of centrifugal force, the mother liquor in the thick liquid is thrown to the inner side wall of the centrifuge tank 5 through the pores of the filter cartridge 12. Then, the drain valve 6 at the bottom end of the outer wall of the centrifuge tank 5 is opened to discharge the mother liquor. After the centrifugation is completed, the bolts connecting the upper cover 7 and the centrifuge tank 5 are removed using special tools, the upper cover 7 is removed, and then the filter cartridge 12 is removed from the centrifuge tank 5 to obtain sodium trifluoroacetate crystals.

[0035] In the description of the present invention, the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "vertical", "horizontal", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are intended only to describe the present invention and do not require that the present invention must be constructed or operated in a specific direction. Therefore, they should not be understood as limitations on the present invention. The terms "connected" and "connected" in the present invention should be understood in a broad sense. For example, they can be connected or detachably connected; they can be directly connected or indirectly connected through an intermediate component. For those skilled in the art, the specific meanings of the above terms can be understood according to the specific circumstances.

[0036] The above is a preferred operating mode of the present invention. The description of the specific operating mode is only for a better understanding of the concept of the present invention. For those skilled in the art, it is clear that several improvements or equivalent substitutions can be made according to the principles of the present invention, and these improvements or equivalent substitutions are also considered to fall within the scope of protection of the present invention.

Claims

1. A production equipment for sodium trifluoroacetate, comprising a base plate, characterized in that: A reaction tank is fixedly connected to the top left side of the bottom plate, a heating and concentration tank is fixedly connected to the middle surface of the bottom plate, a centrifugal tank is fixedly connected to the right side surface of the bottom plate, a high-efficiency liquid mixing mechanism is provided on the inner wall of the top of the reaction tank, and two sets of raw material liquid storage barrels are fixedly connected to the top of the outer wall of the reaction tank; The transmission mechanism that this invention relates to is that this invention relates to a gear train which is fixedly mounted on a gear train of said motor a and which has a top end mounted on a gear train of said motor a and a bottom end mounted on said gear train of said motor a. The gear train which is fixedly mounted on a gear train of said motor a and which has a top end mounted on a gear train of said motor a.

2. A production equipment for sodium trifluoroacetate according to claim 1, characterized in that: A drain valve is provided at the bottom end of the outer wall of the centrifugal tank, an exhaust valve is provided at the top end of the heating and concentrating tank, an upper cover is provided at the top end of the outer wall of the centrifugal tank, a motor b is fixedly connected to the bottom end of the outer wall of the centrifugal tank, a positioning shaft is fixedly connected to the output shaft of the motor b, and a filter cartridge is provided on the outside of the top end of the positioning shaft.

3. A production equipment for sodium trifluoroacetate according to claim 2, characterized in that: The top end of the outer wall of the sliding plate is fixedly connected to two sets of left and right racks, and the outer walls of the two sets of racks are meshed with gears. The rotation center axis of the gear is fixedly connected to a connecting shaft, and the rotation center axis of the end of the connecting shaft away from the gear is rotatably connected to a rotary valve plate; the stirring blade assembly includes a protrusion, the inner side wall of the protrusion is hinged with a connecting block, and the end of the connecting block away from the protrusion is fixedly connected to a stirring blade, and a plurality of through grooves are provided on the surface of the stirring blade, and the inner wall of the stirring blade through groove is fixedly connected to a liquid separating rod.

4. A production equipment for sodium trifluoroacetate according to claim 2, characterized in that: The motor a is fixedly connected to the center of the top surface of the reaction tank, and the rotating shaft is rotatably connected to the center of the inner side wall of the reaction tank.

5. A production equipment for sodium trifluoroacetate according to claim 3, characterized in that: A slot is provided at the center of the sliding plate, and an inner wall of the slot of the sliding plate contacts the outer surface of the rotating shaft.

6. A production equipment for sodium trifluoroacetate according to claim 2, characterized in that: The top end of the outer wall of the filter cartridge contacts the bottom end of the outer wall of the upper cover, the outer arc surface of the filter cartridge contacts the inner side wall of the centrifugal tank, and the positioning shaft is rotatably connected to the center of the bottom end of the centrifugal tank.

7. A production equipment for sodium trifluoroacetate according to claim 3, characterized in that: The downpipe a is fixedly connected to the top of the inner wall of the reaction tank, and the rotating block is rotatably connected to the outer side wall of the bottom end of the downpipe a. A set of booster pumps A is provided between the reaction tank and the heating and concentration tank, and another set of booster pumps B is provided between the heating and concentration tank and the centrifugal tank.

8. A production equipment for sodium trifluoroacetate according to claim 3, characterized in that: A guide groove is provided on the inner wall of the top of the reaction tank, the rack passes through and is slidably connected to the inner wall of the guide groove at the top of the reaction tank, the connecting shaft passes through and is rotatably connected to the inner side wall of the raw material storage barrel, and the outer side wall of the rotary valve plate is in contact with the inner side wall of the raw material storage barrel.

9. A production equipment for sodium trifluoroacetate according to claim 3, characterized in that: The protrusions are provided in multiple groups, and the protrusions are fixedly connected to the outer arc surface of the rotating shaft.

10. A method for producing sodium trifluoroacetate, based on the production equipment for sodium trifluoroacetate according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1: Raw material mixing reaction. First, trifluoroacetic acid and sodium hydroxide are placed in two sets of raw material liquid storage barrels at the top of the reaction tank, respectively. The motor a at the top of the reaction tank is started. Its output shaft drives the rotating shaft to rotate. The annular corrugated groove on the outer arc surface of the top of the rotating shaft drives the cylindrical block to slide back and forth, thereby driving the sliding plate to move up and down synchronously along the rotating shaft. The two sets of racks at the top of the sliding plate slide in the guide groove on the inner wall of the top of the reaction tank, providing guidance for the movement of the sliding plate. When the rack moves up and down, it engages with the gear to rotate. The gear drives the rotary valve plate in the raw material storage barrel to rotate through the connecting shaft, realizing quantitative discharge of raw materials. The raw materials enter the downpipe b through the downpipe a and the corrugated hose. At the same time, when the sliding plate moves up and down, the slider moves in its slide groove, and drives the rotating block to rotate through the connecting rod a. The rotating block drives the connecting rod b to rotate, causing the convex rod to slide in the slide groove of the connecting rod b, thereby driving the downpipe b to swing back and forth, spraying the raw materials evenly on the inner side wall of the reaction tank. The stirring blade assembly on the outside of the rotating shaft works synchronously. The protrusion rotates with the rotating shaft, driving the connecting block to swing up and down, causing the inclined stirring blade to swing up and down while rotating. Cooperating with the liquid separation rod in the stirring blade groove, the sprayed raw materials are fully mixed with the liquid in the reaction tank, accelerating the reaction of trifluoroacetic acid and sodium hydroxide to produce sodium trifluoroacetate solution. S2: Heating and concentrating. When the raw material mixing reaction in the reaction tank is completed, the booster pump A between the reaction tank and the heating and concentrating tank is started to transport the reacted mixed liquid to the heating and concentrating tank. The mixed liquid in the heating and concentrating tank is heated to evaporate the water in the mixed liquid to form steam. At this time, the exhaust valve at the top of the heating and concentrating tank is opened to discharge the steam in time to maintain the pressure in the tank stable. The heating is continued to concentrate the mixed liquid, and finally a thick liquid containing sodium trifluoroacetate crystals is formed; S3: Centrifugal separation. After the concentration is completed, the booster pump B between the heating concentration tank and the centrifuge tank is started to transport the thick liquid to the filter cartridge in the centrifuge tank. The upper cover at the top of the centrifuge tank is closed and fixed to the top of the outer wall of the centrifuge tank with bolts. The motor b at the bottom of the outer wall of the centrifuge tank is started. Its output shaft drives the positioning shaft to rotate. Since the cross groove at the bottom of the filter cartridge fits with the top of the positioning shaft, the positioning shaft drives the filter cartridge to rotate synchronously. Under the action of centrifugal force, the mother liquor in the thick liquid is thrown to the inner side wall of the centrifuge tank through the pores of the filter cartridge. Then, the drain valve at the bottom of the outer wall of the centrifuge tank is opened to discharge the mother liquor. After the centrifugation is completed, special tools are used to remove the bolts connecting the upper cover and the centrifuge tank, remove the upper cover, and then remove the filter cartridge from the centrifuge tank to obtain sodium trifluoroacetate crystals.

Images