Continuous crystallization device for sulfamic acid production and use method thereof

Abstract

The invention discloses a continuous crystallization device for sulfamic acid production and a use method thereof, and belongs to the technical field of sulfamic acid preparation, a top cover is movably mounted between an outer ring table and an inner ring table, and a threaded ring triggers multiple groups of locking rods and lifting blocks to perform double locking on the top cover; the tail end of the flow guide pipe is provided with a plurality of groups of nozzles positioned in the condensation cylinder; a plurality of sets of condensation pipelines are arranged on the inner wall of the condensation cylinder, an air inlet annular groove communicated with the condensation pipelines is formed in the inner wall of the first sealing cover, a second sealing cover is further installed on the right side of the condensation cylinder, an air outlet annular groove communicated with the condensation pipelines is formed in the inner wall of the second sealing cover, and an air outlet nozzle is arranged on the outer wall of the second sealing cover. According to the continuous crystallization device, a sulfamic acid solution can be rapidly crystallized through the condensation cylinder, after waste liquid is discharged out of the condensation cylinder, a discharging motor is started, a sector plate is driven to rotate, a discharging cavity is opened, sulfamic acid crystals are scraped off under the cooperation of the inner cylinder and a scraping strip, and the practicability of the continuous crystallization device is improved through the design.

Description

Technical Field

[0001] The invention relates to the technical field of aminosulfonic acid preparation, in particular to a continuous crystallization device for aminosulfonic acid production and a use method thereof. Background Art

[0002] Aminosulfonic acid is an inorganic solid acid formed by replacing the hydroxyl group of sulfuric acid with an amino group. It is soluble in water and liquid ammonia. At room temperature, as long as it is kept dry and not in contact with water, solid aminosulfonic acid is non-hygroscopic and relatively stable. The aqueous solution of aminosulfonic acid has the same strong acidity as hydrochloric acid and sulfuric acid, so it is also called solid sulfuric acid. It is non-volatile, odorless and has low toxicity to the human body. Dust or solution is irritating to the eyes and skin and can cause burns. The maximum allowable concentration is 10mg / m 3 Aminosulfonic acid can be used to synthesize herbicides, fire retardants, sweeteners, preservatives, metal cleaning agents, etc. It is a common chemical raw material.

[0003] The patent application with publication number CN119588270A discloses a device and process for realizing continuous crystallization of aminosulfonic acid, including a filter box and a production box, the production box is fixed to the upper surface of the filter box by bolt connection, a feed pipe is arranged at the top of the production box, a partition plate is arranged in the middle of the inner part of the production box, a conveying pipe is arranged in the middle of the partition plate, a feed pipe, a production reaction module, and a filter cleaning module are arranged between the production box and the filter box. In the process of continuous crystallization production of aminosulfonic acid, the technical scheme can spray pure water on the inside of the filter cylinder through a nozzle when the filter cylinder filters the aminosulfonic acid crystals from the mother liquor, and the aminosulfonic acid crystals can be quickly and evenly washed to remove impurities by the filter cylinder that is constantly shaken back and forth during the rotation, which can effectively increase the efficiency of continuous crystallization production of aminosulfonic acid.

[0004] However, the sealing effect of the aminosulfonic acid crystallization device disclosed above is average, lacking a highly sealed quick locking structure, and the cooling effect is average, and the solution after the reaction cannot be fully crystallized, the crystallization efficiency is low, and it is easy to cause waste. Summary of the invention

[0005] The purpose of the present invention is to provide a continuous crystallization device for the production of sulfamic acid and a method for using the same in order to solve the problems that the existing sulfamic acid crystallization device has a general sealing effect, lacks a high-sealing quick locking structure, has a general cooling effect, cannot fully crystallize the solution after the reaction, has a low crystallization efficiency, and is prone to waste.

[0006] To achieve the above-mentioned purpose, the technical scheme of the present invention is: a continuous crystallization device for aminosulfonic acid production, comprising a sulfonation kettle and a crystallization mechanism, the top of the sulfonation kettle is provided with a kettle mouth, the top of the kettle mouth is fixedly provided with a coaxial outer ring platform and an inner ring platform, a top cover is movably installed between the outer ring platform and the inner ring platform, a plurality of groups of locking rods are movably arranged inside the outer ring platform, and a plurality of groups of lifting blocks and compression columns are also vertically arranged inside the outer ring platform; a threaded ring is threadedly installed on the outer ring platform, and the threaded ring triggers a plurality of groups of the locking rods and lifting blocks to double lock the top cover; a guide pipe is provided at the bottom of the sulfonation kettle, A discharge valve is installed on the guide tube; the crystallization mechanism includes a condensation cylinder, and a plurality of nozzles located inside the condensation cylinder are arranged at the end of the guide tube; a plurality of condensation pipes are opened on the inner wall of the condensation cylinder, and a first sealed cover movably connected to the condensation cylinder is fixedly arranged on the guide tube, an air inlet ring groove connected to the condensation pipe is opened on the inner wall of the first sealed cover, and an air inlet nozzle is arranged on the outer wall of the first sealed cover; a second sealed cover is also installed on the right side of the condensation cylinder, an air outlet ring groove connected to the condensation pipe is opened on the inner wall of the second sealed cover, and an air outlet nozzle is arranged on the outer wall of the second sealed cover.

[0007] As a further solution of the present invention: the crystallization mechanism also includes a support frame fixedly installed on the ground, a rotating hoop is fixedly provided on the top of the support frame, and the condensing cylinder is movably installed inside the rotating hoop; a flip gear ring is also installed on the outer wall of the condensing cylinder, a flip motor is installed on the outer wall of the support frame, and a flip gear meshing with the flip gear ring is installed on the output end of the flip motor.

[0008] As a further solution of the present invention: a rotating cavity is provided on the inner wall of the condensing cylinder, and a plurality of scraping strips located inside the rotating cavity are also provided on the inner wall of the condensing cylinder, and a rotating groove penetrating the outer wall of the condensing cylinder is provided on the top of the rotating cavity; an inner cylinder is movably installed in the rotating cavity, and a discharge gear ring movably arranged in the rotating groove is fixedly provided on the top of the inner cylinder; a through hole connecting the condensing pipes on both sides is provided on the discharge gear ring; a discharge motor is installed on the outer wall of the condensing cylinder, and a discharge gear meshing with the discharge gear ring is installed on the output end of the discharge motor.

[0009] As a further solution of the present invention: a cantilever is further arranged on the outer wall of the support frame, and the second airtight cover is fixedly arranged on the cantilever; and a plurality of groups of drainage grooves and material discharge cavities arranged at intervals are provided on the second airtight cover.

[0010] As a further solution of the present invention: a fan-shaped plate is rotatably arranged on the outer wall of the second sealed cover, a discharge gear ring is installed on the outer wall of the fan-shaped plate, a discharge motor is installed on the top of the second sealed cover, and a discharge gear meshing with the discharge gear ring is installed at the output end of the discharge motor.

[0011] As a further solution of the present invention: a plurality of extrusion cavities are provided inside the outer ring platform, and the locking rod is movably installed in the extrusion cavity; a symmetrical reset cavity is provided on both sides of the extrusion cavity, a convex plate movably provided in the reset cavity is fixedly provided on the outer wall of the locking rod, and a reset spring is connected to the bottom of the convex plate; a locking block is fixedly provided on the inner side of the locking rod, and a plurality of locking grooves cooperating with the locking block are provided on the outer wall of the top cover.

[0012] As a further solution of the present invention: a plurality of groups of positioning members are arranged at the bottom of the top cover, and the positioning members include a horizontal portion and a vertical portion; a quick lock cavity is formed between the outer ring platform and the inner ring platform, and a positioning groove for quickly positioning the positioning member is opened at the bottom of the quick lock cavity, and a locking groove for locking the horizontal portion is opened on the inner wall in the clockwise direction of the positioning groove.

[0013] As a further solution of the present invention: a lifting cavity is provided at the bottom of the positioning groove, the lifting block is movably installed in the lifting cavity, and a return spring 2 is also connected to the bottom of the lifting block; a plurality of extrusion cavities 2 connected to the lifting cavity are provided on the outer ring platform, and a linkage part is also movably installed at the bottom of the extrusion cavity 2, an extrusion part cooperating with the lifting block is provided on the inner side of the linkage part, and a lifting inclined surface is provided on the outer wall of the lifting block; a plurality of return springs 3 are connected to the outer wall of the linkage part, the compression column is movably provided at the top of the linkage part, a lower inclined block is provided at the bottom of the compression column, and an upper inclined block abutting against the lower inclined block is provided at the top of the linkage part.

[0014] As a further solution of the present invention: symmetrical reset chambers are provided on both sides of the extrusion chamber, convex plates are fixedly provided on both sides of the compression column and movably installed in the reset chamber, and reset springs are connected to the bottom of the convex plates; a stirring motor is installed on the top of the top cover, a stirring shaft is provided at the output end of the stirring motor, and a control panel is provided on the outer wall of the sulfonation kettle.

[0015] As a further scheme of the present invention: a method for using a continuous crystallization device for the production of aminosulfonic acid, S1. The top cover is quickly installed by a locking rod and a lifting block, and then urea and fuming sulfuric acid are added to the sulfonation kettle in proportion; S2. After the sulfonation reaction is completed, a small amount of dilute sulfuric acid is added to the sulfonation kettle and the pH value is adjusted; S3. The discharge valve is opened to transport the aminosulfonic acid solution to the condensation cylinder through the guide pipe; S4. Condensed gas is input into the air inlet nozzle, and the condensation cylinder is driven to rotate by a driving device; S5. Excess liquid is discharged through the second closed cover, and the aminosulfonic acid crystals are collected.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention can quickly install the top cover into the quick lock cavity through the positioning piece. When the threaded ring is installed, the threaded sleeve will squeeze the locking rod and the compression column. At this time, the locking rod moves inward and locks the outer wall of the top cover. With the cooperation of the upper inclined block and the lower inclined block, the linkage will slide inward. At this time, the lifting block slides upward along the lifting cavity and re-locks the vertical part and the inner wall of the positioning groove, thereby greatly improving the airtightness and preventing the harmful gas generated by the sulfonation reaction from escaping. This design improves the stability and safety of the continuous crystallization device for the production of aminosulfonic acid.

[0017] 2. The present invention can rapidly cool the sulfamic acid solution through the condensation cylinder, and the sulfamic acid can be rapidly crystallized with the cooperation of the nozzle and the condensation cylinder. After the crystallization is completed, the discharge motor drives the fan-shaped plate to rotate and open the drainage groove, and the waste liquid is discharged from the condensation cylinder through the drainage groove. Then the discharge motor is started and the fan-shaped plate is driven to rotate and open the discharge cavity. With the cooperation of the inner cylinder and the scraper, the sulfamic acid crystals are scraped off. This design improves the practicality of the continuous crystallization device for the production of sulfamic acid. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention will be further explained below in conjunction with the accompanying drawings and embodiments: Figure 1 It is a three-dimensional structural diagram of the present invention; Figure 2 It is a three-dimensional structural diagram of the sulfonation kettle in the present invention; Figure 3 It is a partial three-dimensional structural diagram of the kettle mouth in the present invention; Figure 4 It is a three-dimensional structural diagram of the top cover in the present invention; Figure 5 It is a partial cross-sectional view of the kettle mouth in the present invention; Figure 6 is a partial cross-sectional view of the present invention; Figure 7 It is the internal three-dimensional structure diagram of the sulfonation kettle in the present invention; Figure 8It is a three-dimensional structural diagram of the crystallization mechanism in the present invention; Fig. 9 is a cross-sectional view of the crystallization mechanism of the present invention; Fig.10 It is a three-dimensional structural diagram of the condensing cylinder in the present invention; Fig.11 It is a three-dimensional structural diagram of the inner cylinder in the present invention; Fig.12 It is a three-dimensional structural diagram of the support frame in the present invention; Fig.13 It is a three-dimensional structural diagram of the fan-shaped plate in the present invention.

[0019] Description of reference numerals: 1. Sulfonation kettle; 101. Kettle mouth; 102. Outer ring stage; 103. Inner ring stage; 104. Quick lock chamber; 105. Top cover; 106. Stirring motor; 107. Stirring shaft; 108. Extrusion chamber 1; 109. Locking rod; 110. Reset chamber 1; 111. Convex plate 1; 112. Reset spring 1; 113. Locking block; 114. Locking groove; 115. Positioning member; 116. Horizontal part; 117. Vertical part; 118. Positioning groove; 119. Locking groove; 120, lifting chamber; 121, lifting block; 122, reset spring 2; 123, extrusion chamber 2; 124, linkage; 125, extrusion part; 126, lifting inclined plane; 127, reset spring 3; 128, compression column; 129, upper inclined block; 130, lower inclined block; 131, reset chamber 2; 132, convex plate 2; 133, reset spring 4; 134, control panel; 135, threaded ring; 136, guide tube; 137, discharge valve; 138, nozzle; 2. Crystallization mechanism; 201. Support frame; 202. Condensation cylinder; 203. Rotating hoop; 204. Flipping gear ring; 205. Flipping motor; 206. Flipping gear; 207. First closed cover; 208. Cantilever; 209. Second closed cover; 210. Condensation pipe; 211. Inlet ring groove; 212. Inlet nozzle; 213. Outlet ring groove; 214. Outlet nozzle; 215. Rotating chamber; 216. Scraper; 217. Rotating groove; 218. Inner cylinder; 219. Feeding gear ring; 220. Through hole; 221. Feeding motor; 222. Feeding gear; 223. Drain trough; 224. Discharge chamber; 225. Fan plate; 226. Discharge gear ring; 227. Discharge motor; 228. Discharge gear. DETAILED DESCRIPTION

[0020] The following will be combined with the attached Figures 1 to 13The technical solution of the present invention is described clearly and completely. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] The present invention provides a continuous crystallization device for the production of aminosulfonic acid by improvement, such as Figure 1-Figure 13 As shown, it includes a sulfonation kettle 1 and a crystallization mechanism 2, the top of the sulfonation kettle 1 is provided with a kettle mouth 101, the top of the kettle mouth 101 is fixedly provided with a coaxial outer ring platform 102 and an inner ring platform 103, a top cover 105 is movably installed between the outer ring platform 102 and the inner ring platform 103, a plurality of groups of locking rods 109 are movably arranged inside the outer ring platform 102, and a plurality of groups of lifting blocks 121 and compression columns 128 are also vertically arranged inside the outer ring platform 102; a threaded ring 135 is threadedly installed on the outer ring platform 102, and the threaded ring 135 triggers the plurality of groups of locking rods 109 and the lifting blocks 121 to double lock the top cover 105; a guide pipe 136 is provided at the bottom of the sulfonation kettle 1, and a discharge valve 137 is installed on the guide pipe 136; The crystallization mechanism 2 includes a condensation cylinder 202, and a plurality of nozzles 138 located inside the condensation cylinder 202 are arranged at the end of the guide tube 136; a plurality of condensation pipes 210 are opened on the inner wall of the condensation cylinder 202, and a first sealed cover 207 movably connected to the condensation cylinder 202 is fixedly arranged on the guide tube 136, an air inlet annular groove 211 connected to the condensation pipe 210 is opened on the inner wall of the first sealed cover 207, and an air inlet nozzle 212 is arranged on the outer wall of the first sealed cover 207; a second sealed cover 209 is also installed on the right side of the condensation cylinder 202, an air outlet annular groove 213 connected to the condensation pipe 210 is opened on the inner wall of the second sealed cover 209, and an air outlet nozzle 214 is arranged on the outer wall of the second sealed cover 209.

[0022] In the present embodiment: the continuous crystallization device for the production of aminosulfonic acid is mainly divided into two parts: a sulfonation kettle 1 and a crystallization mechanism 2. When the device is in use, the top cover 105 is first quickly installed by the locking rod 109 and the lifting block 121, and then urea and oleum are added to the sulfonation kettle 1 in proportion through the feed port, and the stirring motor 106 is started to fully stir the raw materials. After the sulfonation reaction is completed, a small amount of dilute sulfuric acid is added to the sulfonation kettle 1 and the pH value is adjusted, and then the unloading valve 137 is opened, and the aminosulfonic acid solution is transported to the condensation cylinder 202 of the inclined design through the guide pipe 136. Then the external condensation gas equipment is communicated with the air inlet nozzle 212, and the condensation gas passes through the air inlet ring groove 211, the condensation pipeline 210 and the air outlet ring groove 213 in sequence and quickly cools the inner wall of the condensation cylinder 202. Start the flip motor 205 and drive the condensation cylinder 202 to rotate, and the solution sprayed by the nozzle 138 is quickly condensed and crystals are precipitated. After the crystallization is completed, the discharge motor 227 is started to drive the fan-shaped plate 225 to rotate and open the drainage groove 223. At this time, the waste liquid is discharged from the condensation cylinder 202 through the drainage groove 223. Finally, the discharge motor 227 and the discharge motor 221 are started again. The discharge motor 227 drives the fan-shaped plate 225 to close the drainage groove 223 and open the discharge cavity 224. The discharge motor 221 drives the inner cylinder 218 to rotate and scrape the aminosulfonic acid crystals.

[0023] See attached Figure 8 -Attached Fig. 9 The crystallization mechanism 2 also includes a support frame 201 fixedly installed on the ground, a rotating hoop 203 is fixedly provided on the top of the support frame 201, and a condensing cylinder 202 is movably installed inside the rotating hoop 203; a flip gear ring 204 is also installed on the outer wall of the condensing cylinder 202, and a flip motor 205 is installed on the outer wall of the support frame 201, and a flip gear 206 meshing with the flip gear ring 204 is installed on the output end of the flip motor 205.

[0024] In this embodiment: In order to ensure that the condensing cylinder 202 rotates freely relative to the support frame 201, thereby increasing the contact area between the aminosulfonic acid solution and the condensing cylinder 202, a rotating hoop 203 structure is designed. In order to automatically drive the condensing cylinder 202 to rotate, a flip motor 205 structure is designed. During the crystallization operation, the aminosulfonic acid solution is first introduced into the condensing cylinder 202 through the inclined guide tube 136, and then the external condensing gas device is connected to the air inlet nozzle 212. At this time, the condensed gas passes through the air inlet ring groove 211, the condensation pipeline 210 and the air outlet ring groove 213 in sequence and quickly cools the inner wall of the condensing cylinder 202.

[0025] See attached Fig.10 -Attached Fig.11A rotating chamber 215 is provided on the inner wall of the condensing cylinder 202, and a plurality of scraping strips 216 located inside the rotating chamber 215 are also provided on the inner wall of the condensing cylinder 202. A rotating groove 217 penetrating the outer wall of the condensing cylinder 202 is provided on the top of the rotating chamber 215; an inner cylinder 218 is movably installed in the rotating chamber 215, and a discharge gear ring 219 movably arranged in the rotating groove 217 is fixedly provided on the top of the inner cylinder 218; a through hole 220 connecting the condensing pipes 210 on both sides is provided on the discharge gear ring 219; a discharge motor 221 is installed on the outer wall of the condensing cylinder 202, and a discharge gear 222 meshing with the discharge gear ring 219 is installed on the output end of the discharge motor 221.

[0026] In this embodiment: during the crystallization operation, the aminosulfonic acid crystals will adhere to the inner wall of the condensing cylinder 202 and the inner cylinder 218. In order to facilitate the unloading, the inner cylinder 218 and the scraper 216 structure that cooperate with each other are designed. In order to prevent the unloading gear ring 219 from blocking the condensing pipe 210, thereby affecting the condensation effect, multiple groups of through holes 220 are designed. In order to drive the inner cylinder 218 to rotate automatically, a unloading motor 221 structure is designed.

[0027] See attached Fig. 9 and attached Fig.12 -Attached Fig.13 A cantilever 208 is also provided on the outer wall of the support frame 201, and a second sealed cover 209 is fixedly arranged on the cantilever 208; a plurality of sets of drainage grooves 223 and discharge cavities 224 are provided on the second sealed cover 209; a fan-shaped plate 225 is also rotatably provided on the outer wall of the second sealed cover 209, and a discharge gear ring 226 is also installed on the outer wall of the fan-shaped plate 225, and a discharge motor 227 is installed on the top of the second sealed cover 209, and a discharge gear 228 meshing with the discharge gear ring 226 is installed on the output end of the discharge motor 227.

[0028] In this embodiment: the center angles of the drain groove 223 and the discharge cavity 224 are equal and are fan-shaped structures. The angle of a single fan plate on the fan-shaped plate 225 is equal to the sum of the drain groove 223 and the discharge cavity 224. During the crystallization operation, the fan-shaped plate 225 completely blocks the drain groove 223 and the discharge cavity 224. After the crystallization is completed, some uncrystallized aminosulfonic acid solution will still remain inside the condensation cylinder 202. The fan-shaped plate 225 is driven to rotate and open the drain groove 223 by the discharge motor 227. At this time, the waste liquid is discharged from the condensation cylinder 202 through the drain groove 223, and finally the discharge motor 227 is started and the fan-shaped plate 225 is driven to close the drain groove 223 and open the discharge cavity 224.

[0029] See attached Figure 4 -Attached Figure 5 and attached Figure 7The outer ring stage 102 has multiple extrusion chambers 108 inside, and a locking rod 109 is movably installed in the extrusion chamber 108; symmetrical reset chambers 110 are provided on both sides of the extrusion chamber 108, and a convex plate 111 movably arranged in the reset chamber 110 is fixedly provided on the outer wall of the locking rod 109, and a reset spring 112 is connected to the bottom of the convex plate 111; a locking block 113 is fixedly provided on the inner side of the locking rod 109, and multiple locking grooves 114 cooperating with the locking block 113 are provided on the outer wall of the top cover 105.

[0030] In this embodiment, when the threaded ring 135 is installed, the inner wall of the threaded ring 135 squeezes the locking rod 109, and the locking rod 109 moves inward along the squeezing cavity 108 and locks the upper locking groove 114 on the outer wall of the top cover 105 through the locking block 113. When the threaded ring 135 is removed, the locking rod 109 automatically pops out under the action of the return spring 112 and unlocks the outer wall of the top cover 105.

[0031] See attached Figure 4 -Attached Figure 6 A plurality of positioning members 115 are provided at the bottom of the top cover 105, and the positioning members 115 include a horizontal portion 116 and a vertical portion 117; a quick lock cavity 104 is formed between the outer ring platform 102 and the inner ring platform 103, and a positioning groove 118 for quickly positioning the positioning member 115 is provided at the bottom of the quick lock cavity 104, and a locking groove 119 for locking the horizontal portion 116 is provided on the inner wall of the positioning groove 118 in the clockwise direction.

[0032] In this embodiment, when installing the top cover 105, first insert the positioning member 115 into the positioning groove 118, and at this time, the top of the lifting block 121 is flush with the bottom of the positioning groove 118 under the action of the return spring 122. Then rotate the top cover 105 clockwise, and the preliminary locking installation is completed when the horizontal part 116 is inserted into the locking groove 119. At this time, there is still space between the outer wall of the vertical part 117 and the inner wall of the positioning groove 118 to be locked by the lifting block 121.

[0033] See attached Figure 4 -Attached Figure 7A lifting cavity 120 is provided at the bottom of the positioning groove 118, and a lifting block 121 is movably installed in the lifting cavity 120. A return spring 122 is also connected to the bottom of the lifting block 121; multiple groups of extrusion cavities 123 connected to the lifting cavity 120 are provided on the outer ring platform 102, and a linkage member 124 is also movably installed at the bottom of the extrusion cavity 123. An extrusion portion 125 cooperating with the lifting block 121 is provided on the inner side of the linkage member 124, and a lifting inclined surface 126 is provided on the outer wall of the lifting block 121; multiple groups of return springs 127 are connected to the outer wall of the linkage member 124, a compression column 128 is movably provided at the top of the linkage member 124, a lower inclined block 130 is provided at the bottom of the compression column 128, and an upper inclined block 129 abutting against the lower inclined block 130 is provided at the top of the linkage member 124.

[0034] In this embodiment, when the threaded ring 135 is installed, its top will squeeze the compression column 128. Since the upper inclined block 129 and the lower inclined block 130 are kept in contact, the linkage member 124 will slide inward along the bottom of the second extrusion chamber 123. At this time, the lifting block 121 moves upward along the lifting chamber 120 under the action of the lifting inclined surface 126. At this time, the lifting block 121 will lock the space between the outer wall of the vertical portion 117 and the inner wall of the positioning groove 118.

[0035] See attached Figure 5 and attached Figure 7 Symmetrical reset chambers 131 are provided on both sides of the extrusion chamber 123, and convex plates 132 movably installed in the reset chamber 131 are fixedly provided on both sides of the compression column 128, and a reset spring 133 is connected to the bottom of the convex plate 132; a stirring motor 106 is installed on the top of the top cover 105, and a stirring shaft 107 is provided at the output end of the stirring motor 106, and a control panel 134 is provided on the outer wall of the sulfonation kettle 1.

[0036] In this embodiment, in order to further improve the stability and drive the compression column 128 to automatically return to the original state, a return spring 133 structure is designed. In order to improve the reaction effect of urea and oleum, a stirring motor 106 structure is designed.

[0037] Working principle of the present invention: When the device is used, the top cover 105 is first quickly installed through the locking rod 109 and the lifting block 121, and then urea and oleum are added to the sulfonation kettle 1 in proportion through the feeding port, and the stirring motor 106 is started to fully stir the raw materials. After the sulfonation reaction is completed, a small amount of dilute sulfuric acid is added to the sulfonation kettle 1 and the pH value is adjusted, and then the unloading valve 137 is opened, and the aminosulfonic acid solution is transported to the inclined condensation cylinder 202 through the guide pipe 136. Then the external condensing gas device is connected to the air inlet nozzle 212, and the condensed gas passes through the air inlet ring groove 211, the condensation pipeline 210 and the air outlet ring groove 213 in turn and quickly cools the inner wall of the condensation cylinder 202. Start the flip motor 205 and drive the condensation cylinder 202 to rotate, and the solution sprayed by the nozzle 138 is quickly condensed and crystals are precipitated. After the crystallization is completed, the discharge motor 227 is started to drive the fan-shaped plate 225 to rotate and open the drainage groove 223. At this time, the waste liquid is discharged from the condensation cylinder 202 through the drainage groove 223. Finally, the discharge motor 227 and the discharge motor 221 are started again. The discharge motor 227 drives the fan-shaped plate 225 to close the drainage groove 223 and open the discharge cavity 224. The discharge motor 221 drives the inner cylinder 218 to rotate and scrape the aminosulfonic acid crystals.

[0038] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and inventive features disclosed herein.

Claims

1. A continuous crystallization device for producing aminosulfonic acid, comprising a sulfonation kettle (1) and a crystallization mechanism (2), characterized in that: The sulfonation kettle (1) is provided with a kettle mouth (101) at the top, and a coaxial outer ring platform (102) and an inner ring platform (103) are fixedly provided at the top of the kettle mouth (101), a top cover (105) is movably installed between the outer ring platform (102) and the inner ring platform (103), a plurality of groups of locking rods (109) are movably installed inside the outer ring platform (102), and a plurality of groups of lifting blocks (121) and compression columns (128) are also vertically arranged inside the outer ring platform (102); a threaded ring (135) is threadedly installed on the outer ring platform (102), and the threaded ring (135) triggers the plurality of groups of locking rods (109) and lifting blocks (121) to double-lock the top cover (105); a guide pipe (136) is provided at the bottom of the sulfonation kettle (1), and a discharge valve (137) is installed on the guide pipe (136); The crystallization mechanism (2) comprises a condensation cylinder (202), and the end of the guide tube (136) is provided with a plurality of nozzles (138) located inside the condensation cylinder (202); a plurality of condensation pipes (210) are provided on the inner wall of the condensation cylinder (202), and a first sealed cover (207) movably connected to the condensation cylinder (202) is fixedly provided on the guide tube (136), an air inlet ring groove (211) connected to the condensation pipe (210) is provided on the inner wall of the first sealed cover (207), and an air inlet nozzle (212) is provided on the outer wall of the first sealed cover (207); a second sealed cover (209) is also installed on the right side of the condensation cylinder (202), an air outlet ring groove (213) connected to the condensation pipe (210) is provided on the inner wall of the second sealed cover (209), and an air outlet nozzle (214) is provided on the outer wall of the second sealed cover (209).

2. A continuous crystallization device for the production of aminosulfonic acid according to claim 1, characterized in that: The crystallization mechanism (2) further comprises a support frame (201) fixedly mounted on the ground, a rotating hoop (203) being fixedly arranged on the top of the support frame (201), and the condensing cylinder (202) being movably mounted inside the rotating hoop (203); a flip gear ring (204) is also mounted on the outer wall of the condensing cylinder (202), a flip motor (205) is mounted on the outer wall of the support frame (201), and a flip gear (206) meshing with the flip gear ring (204) is mounted on the output end of the flip motor (205).

3. A continuous crystallization device for the production of sulfamic acid according to claim 1, characterized in that: A rotating cavity (215) is provided on the inner wall of the condensing cylinder (202), and a plurality of scraping strips (216) located inside the rotating cavity (215) are also provided on the inner wall of the condensing cylinder (202); a rotating groove (217) penetrating the outer wall of the condensing cylinder (202) is provided on the top of the rotating cavity (215); an inner cylinder (218) is movably installed in the rotating cavity (215), and a material discharge ring gear (219) movably installed in the rotating groove (217) is fixedly installed on the top of the inner cylinder (218); a through hole (220) is provided on the material discharge ring gear (219) for connecting the condensing pipes (210) on both sides; a material discharge motor (221) is installed on the outer wall of the condensing cylinder (202), and a material discharge gear (222) meshing with the material discharge ring gear (219) is installed at the output end of the material discharge motor (221).

4. A continuous crystallization device for the production of aminosulfonic acid according to claim 2, characterized in that: A cantilever (208) is also provided on the outer wall of the support frame (201), and the second sealed cover (209) is fixedly arranged on the cantilever (208); the second sealed cover (209) is provided with a plurality of groups of drainage grooves (223) and material drainage cavities (224) arranged at intervals.

5. A continuous crystallization device for the production of aminosulfonic acid according to claim 4, characterized in that: A fan-shaped plate (225) is rotatably provided on the outer wall of the second sealed cover (209), and a discharge gear ring (226) is also installed on the outer wall of the fan-shaped plate (225). A discharge motor (227) is installed on the top of the second sealed cover (209), and a discharge gear (228) meshing with the discharge gear ring (226) is installed at the output end of the discharge motor (227).

6. A continuous crystallization device for the production of aminosulfonic acid according to claim 1, characterized in that: The outer ring platform (102) has a plurality of extrusion chambers (108) formed therein, and the locking rod (109) is movably mounted in the extrusion chamber (108); symmetrical reset chambers (110) are formed on both sides of the extrusion chamber (108); a convex plate (111) movably mounted in the reset chamber (110) is fixedly mounted on the outer wall of the locking rod (109); a reset spring (112) is connected to the bottom of the convex plate (111); a locking block (113) is fixedly mounted on the inner side of the locking rod (109); and a plurality of locking grooves (114) cooperating with the locking block (113) are formed on the outer wall of the top cover (105).

7. A continuous crystallization device for the production of aminosulfonic acid according to claim 1, characterized in that: A plurality of groups of positioning members (115) are arranged at the bottom of the top cover (105), and the positioning members (115) include a horizontal portion (116) and a vertical portion (117); a quick-locking cavity (104) is formed between the outer ring platform (102) and the inner ring platform (103); a positioning groove (118) for quickly positioning the positioning member (115) is provided at the bottom of the quick-locking cavity (104); and a locking groove (119) for locking the horizontal portion (116) is provided on the inner wall in the clockwise direction of the positioning groove (118).

8. A continuous crystallization device for the production of aminosulfonic acid according to claim 7, characterized in that: A lifting chamber (120) is provided at the bottom of the positioning groove (118), and the lifting block (121) is movably installed in the lifting chamber (120). The bottom of the lifting block (121) is also connected to a second return spring (122); the outer ring platform (102) is provided with a plurality of groups of second extrusion chambers (123) connected to the lifting chamber (120), and a linkage member (124) is also movably installed at the bottom of the second extrusion chamber (123). The inner side of the linkage member (124) is provided with a spring that is connected to the lifting chamber (120). The lifting block (121) is matched with an extrusion portion (125), and a lifting inclined surface (126) is arranged on the outer wall of the lifting block (121); a plurality of groups of return springs (127) are connected to the outer wall of the linkage member (124), the compression column (128) is movably arranged on the top of the linkage member (124), a lower inclined block (130) is arranged at the bottom of the compression column (128), and an upper inclined block (129) abutting against the lower inclined block (130) is arranged at the top of the linkage member (124).

9. A continuous crystallization device for the production of aminosulfonic acid according to claim 8, characterized in that: Symmetrical reset chambers (131) are provided on both sides of the second extrusion chamber (123); convex plates (132) movably mounted in the second reset chamber (131) are fixedly provided on both sides of the compression column (128); a reset spring (133) is connected to the bottom of the second convex plate (132); a stirring motor (106) is installed on the top of the top cover (105); a stirring shaft (107) is provided at the output end of the stirring motor (106); and a control panel (134) is provided on the outer wall of the sulfonation kettle (1).

10. A method for using the continuous crystallization device for producing aminosulfonic acid according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1. The top cover (105) is quickly installed by means of the locking rod (109) and the lifting block (121), and then urea and oleum are added to the sulfonation reactor (1) in proportion; S2. After the sulfonation reaction is completed, a small amount of dilute sulfuric acid is added to the sulfonation reactor (1) and the pH value is adjusted; S3. Open the discharge valve (137) to transfer the aminosulfonic acid solution to the condensation cylinder (202) through the flow guide tube (136); S4. Input condensed gas into the air inlet nozzle (212), and drive the condensing cylinder (202) to rotate through the driving device; S5. Excess liquid is discharged through the second sealing cover (209), and the aminosulfonic acid crystals are collected.

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