Amino sulfonic acid gradient crystallization temperature control impurity removal device

Abstract

The utility model discloses a kind of sulfamic acid gradient crystallization temperature control impurity removal devices, including impurity removal crystallization kettle, the outside of impurity removal crystallization kettle is equipped with crystallization temperature control mechanism, and heating core column is installed in the outside of crystallization temperature control mechanism, the crystallization temperature control mechanism further includes stirring auxiliary boss, the outside of heating core column is wrapped with heat preservation sheath, heating core column includes electric heating column, and multiple groups of through holes are arranged in the inside of electric heating column. The sulfamic acid gradient crystallization temperature control impurity removal device, the heat generated by heating rod in electric heating column is evenly transmitted to crystallization temperature control mechanism by the electric heating column firmly installed in limiting space, and the temperature curve of crystallization process can be controlled by operator according to the difference of solubility of sulfamic acid target product and impurity, such as slow cooling, stepped cooling or heat preservation crystallization, so as to maximize the yield and purity of target product, and promote the formation of high-quality crystal with uniform particle size and regular morphology.

Description

Technical Field

[0001] This utility model relates to the field of chemical equipment, specifically to a temperature-controlled and impurity-removing device for gradient crystallization of aminosulfonic acid. Background Technology

[0002] Currently, crystallization kettles are mixing reaction equipment used in industries such as chemical, pharmaceutical, and food processing for processes such as material mixing, heating, cooling, and stirring. After the materials in the crystallization kettle are mixed evenly, they need to be rapidly cooled using cooling water or chilled water in the jacket.

[0003] The existing technology can be referenced from the utility model patent with authorization announcement number CN212119083U, which discloses an aminosulfonic acid crystallization kettle. The kettle body is provided with a feed pipe at the upper end of the kettle body and a feed port is formed at the tail end of the feed pipe. The diameter of the feed port is larger than the diameter of the feed pipe. Two branch pipes are fixedly connected to the bottom end of the feed pipe. The two branch pipes are respectively set at both ends of the bottom end of the feed pipe and their diameters are larger than the diameter of the feed pipe.

[0004] Although the above-mentioned device can control the amount of material flow and improve the crystallization effect and product quality, in actual use, when the aminosulfonic acid raw material crystallizes inside the crystallization vessel, the solubility of the target product and impurities varies at different temperatures. Simply relying on water cooling cannot improve the purity and crystal quality of the final product through gradient temperature control, which increases the difficulty and cost of subsequent purification. Utility Model Content

[0005] The purpose of this invention is to provide a temperature-controlled impurity removal device for gradient crystallization of aminosulfonic acid, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, a gradient crystallization temperature-controlled impurity removal device for aminosulfonic acid is provided, comprising an impurity removal crystallization vessel, a crystallization temperature control mechanism on the outside of the crystallization temperature control mechanism, and a heating core column installed on the outside of the crystallization temperature control mechanism. The crystallization temperature control mechanism also includes a stirring auxiliary protrusion. The heating core column is wrapped with a heat-insulating sleeve. The heating core column includes an electric heating column, and multiple sets of through holes are opened inside the electric heating column. Heating rods are inserted inside the through holes, and an electric plate is fixed to the bottom of the heating rod.

[0007] Furthermore, the impurity removal crystallization vessel is provided with multiple sets of interference heat exchange protrusions at equal intervals, and the cross-section of the interference heat exchange protrusions is "C" shaped. A heat exchange space is opened on the outer side of the interference heat exchange protrusions. Multiple sets of heat exchange seats are fixed on the inner circumference of the crystallization temperature control mechanism, and the distance between two adjacent sets of heat exchange seats is consistent.

[0008] Furthermore, the dimensions of the heat exchange base and the heat exchange space are adapted to each other, and multiple sets of the heat exchange bases are respectively inserted into the interior of multiple sets of the heat exchange spaces.

[0009] Furthermore, multiple sets of stirring-aid protrusions are equidistantly arranged along the outer circumference of the crystallization temperature control mechanism, and a limiting space is formed between two adjacent sets of stirring-aid protrusions, and the limiting space is arc-shaped.

[0010] Furthermore, the inner wall of the limiting space is provided with two sets of limiting channels, and an electric heating column is provided inside the channel. The electric heating column is arc-shaped, and limiting strips are provided at both ends of the electric heating column.

[0011] Furthermore, the limiting strip is adapted to the size of the limiting channel, and the limiting strip is inserted into the limiting channel. Multiple sets of electric heating columns are positioned and installed inside multiple limiting spaces through the limiting strip and the limiting channel.

[0012] Furthermore, the heat insulation sleeve includes heat insulation sleeve A and heat insulation sleeve B, and multiple sets of heat insulation sleeve A and heat insulation sleeve B are equidistantly arranged. Heat insulation sleeve A covers the outside of the heating column, and heat insulation sleeve B covers the outside of the stirring auxiliary protrusion.

[0013] Furthermore, the stirring auxiliary protrusion has an alignment channel inside, and an alignment frame is inserted inside the alignment channel. The alignment frame is U-shaped, and an upper cover is fixed to the end of the alignment frame. The upper cover is screwed to the upper side inside the alignment channel. Multiple sets of ultrasonic transducers are equidistantly arranged inside the alignment frame. The multiple sets of alignment frames are equidistantly arranged along the outer circumference of the impurity removal crystallization vessel.

[0014] Compared with the prior art, the beneficial effects of this utility model are: 1. This solution utilizes the heat generated by the heating rod within the heating column, which is then uniformly transferred to the crystallization temperature control mechanism via the heating column securely installed in the confined space. The heat is then efficiently and uniformly introduced into the impurity-removing crystallization vessel and its internal materials through multiple heat exchange seats tightly inserted into the heat exchange space on its inner circumference. This allows operators to control the temperature profile of the crystallization process based on the difference in solubility between the target aminosulfonic acid product and impurities, such as through slow cooling, step-wise cooling, or heat preservation for crystallization. This maximizes the yield and purity of the target product and promotes the formation of high-quality crystals with uniform particle size and regular morphology.

[0015] 2. This solution integrates an ultrasonic transducer into the stirring auxiliary protrusion, achieving efficient ultrasonic intervention in the crystallization process without introducing internal moving parts or contaminating the material. This significantly improves the particle size distribution and physical morphology of the crystal product, further suppresses impurity encapsulation and eutectic formation, and enhances the purity and crystal quality of the final product. This creates favorable conditions for subsequent purification processes such as filtration, washing, and drying, reducing overall production difficulty and cost. Attached Figure Description

[0016] Figure 1This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the connection structure of the crystallization temperature control mechanism of this utility model; Figure 3 This is an exploded view of the crystallization temperature control mechanism of this utility model. Figure 4 This is a schematic diagram of the ultrasonic transducer and its connection structure of the present invention; Figure 5 This is an exploded view of the structure of this utility model; Figure 6 This is a schematic diagram of the heating rod and its connection structure of the present invention; Figure 7 This is a schematic diagram of the structural limiting strip and its connection structure of this utility model.

[0017] The diagram is labeled as follows: 100, Purification crystallization vessel; 11, Interference heat exchange protrusion; 12, Heat exchange space; 200, Crystallization temperature control mechanism; 21, Heat exchange seat; 22, Limiting space; 221, Limiting channel; 23, Stirring auxiliary protrusion; 231, Alignment channel; 232, Alignment frame; 233, Top cover; 234, Ultrasonic transducer; 300, Heating core column; 31, Electric heating column; 32, Heating rod; 321, Electrical sheet; 33, Limiting strip; 34, Through hole; 400, Insulation sleeve; 41, Insulation sleeve A; 42, Insulation sleeve B. Detailed Implementation

[0018] Please see Figures 1-7 This utility model provides a gradient crystallization temperature control and impurity removal device for aminosulfonic acid, including a crystallization vessel 100, a crystallization temperature control mechanism 200 on the outside of the crystallization vessel 100, and a heating core column 300 installed on the outside of the crystallization temperature control mechanism 200. The crystallization temperature control mechanism 200 also includes a stirring auxiliary protrusion 23. The heating core column 300 is wrapped with a heat insulation sleeve 400. The heating core column 300 includes an electric heating column 31, and multiple sets of through holes 34 are opened inside the electric heating column 31. A heating rod 32 is inserted inside the through holes 34, and an electric sheet 321 is fixed at the bottom of the heating rod 32.

[0019] As a preferred embodiment, the impurity removal crystallization vessel 100 is provided with multiple sets of interference heat exchange protrusions 11 at equal intervals, and the cross section of the interference heat exchange protrusions 11 is "C" shaped. A heat exchange space 12 is provided on the outer side of the interference heat exchange protrusions 11. Multiple sets of heat exchange seats 21 are fixed on the inner circumference of the crystallization temperature control mechanism 200, and the distance between two adjacent sets of heat exchange seats 21 is consistent.

[0020] The dimensions of the heat exchange base 21 and the heat exchange space 12 are compatible, and multiple sets of heat exchange bases 21 are respectively inserted into the interior of multiple sets of heat exchange spaces 12.

[0021] Multiple sets of stirring auxiliary protrusions 23 are equidistantly arranged along the outer circumference of the crystallization temperature control mechanism 200. A limiting space 22 is formed between two adjacent sets of stirring auxiliary protrusions 23, and the limiting space 22 is arc-shaped.

[0022] Two sets of limiting channels 221 are provided on the inner wall of the limiting space 22, and an electric heating column 31 is provided inside the channel. The electric heating column 31 is arc-shaped, and limiting strips 33 are provided at both ends of the electric heating column 31.

[0023] The size of the limiting strip 33 is adapted to the size of the limiting channel 221, and the limiting strip 33 is inserted into the limiting channel 221. Multiple sets of electric heating columns 31 are positioned and installed in the multiple sets of limiting spaces 22 through the limiting strip 33 and the limiting channel 221.

[0024] The insulation sleeve 400 includes insulation sleeve A41 and insulation sleeve B42, and multiple sets of insulation sleeve A41 and insulation sleeve B42 are equidistantly arranged. Insulation sleeve A41 covers the outside of the heating column 31, and insulation sleeve B42 covers the outside of the stirring auxiliary protrusion 23.

[0025] Working principle: In the gradient crystallization temperature control and impurity removal device for aminosulfonic acid, the crystallization temperature control mechanism 200 on the outside of the impurity removal crystallization vessel 100 is inserted into the heat exchange space 12 on the outside of the interference heat exchange protrusion 11 of the impurity removal crystallization vessel 100 through multiple sets of heat exchange seats 21 on its inner circumference, forming a tight heat exchange contact. The heating core column 300 is installed in the limiting space 22 of the crystallization temperature control mechanism 200. The heating column 31 is positioned by being inserted into the limiting channel 221 through the limiting strips 33 at both ends. A heating rod 32 is inserted into the through hole 34 inside the heating column 31. The electric plate 321 at the bottom of the heating rod 32 generates heat after being connected to the power supply. The heat is transferred to the crystallization temperature control mechanism 200 through the heating column 31, and then evenly conducted to the inside of the impurity removal crystallization vessel 100 through the heat exchange seats 21 and the heat exchange space 12, so as to realize the gradient heating or cooling control of the aminosulfonic acid solution and promote the separation of impurities during the crystallization process. Furthermore, the insulation sleeves A41 and B42 of the insulation sleeve 400 cover the outer sides of the heating column 31 and the stirring auxiliary protrusion 23, respectively, effectively reducing heat loss, achieving gradient temperature control, improving crystallization purity and impurity removal efficiency. Simultaneously, the insulation structure reduces energy loss, resulting in a compact overall structure and uniform heat exchange, which is beneficial for the high-quality production of aminosulfonic acid. Insulation sleeves A41 and B42 adopt an integrated design, tightly wrapping the outer sides of the key heating component, the heating column 31, and the heat transfer component, the stirring auxiliary protrusion 23. Their main material is made of high-temperature resistant, low-thermal-conductivity industrial insulation material, aluminum silicate fiber. Due to its extremely low thermal conductivity, it greatly hinders heat loss through conduction, reducing radiative heat dissipation and achieving the purpose of insulating the heating column 31 and the stirring auxiliary protrusion 23.

[0026] like Figures 1-7As shown: Through the synergistic effect of the crystallization temperature control mechanism 200 and the heating core column 300, it provides active, precise and adjustable gradient heating or constant temperature control capabilities, effectively overcoming the limitation of simple water cooling that can only cool in one direction.

[0027] Specifically, the heat generated by the heating rod 32 within the heating column 31 is uniformly transferred to the crystallization temperature control mechanism 200 via the heating column 31 securely installed in the limiting space 22. Then, through multiple sets of heat exchange seats 21 tightly inserted into the heat exchange space 12 on its circumferential inner wall, the heat is efficiently and uniformly introduced into the impurity removal crystallization vessel 100 and the materials inside. This allows the operator to control the temperature curve of the crystallization process based on the difference in solubility between the target aminosulfonic acid product and impurities, such as through slow cooling, step-wise cooling, or heat preservation for crystallization, thereby maximizing the yield and purity of the target product and promoting the formation of high-quality crystals with uniform particle size and regular morphology.

[0028] Furthermore, the insulation jacket 400, comprising insulation jacket A41 covering the heating column 31 and insulation jacket B42 covering the stirring auxiliary protrusion 23, significantly reduces heat loss, improves thermal efficiency, and enhances temperature control stability. This directly optimizes separation at the crystallization stage, reducing the difficulty and cost of subsequent purification processes and achieving an overall improvement in product purity and crystal quality.

[0029] In a preferred embodiment, the stirring auxiliary protrusion 23 has an alignment channel 231 inside, and an alignment frame 232 is inserted inside the alignment channel 231. The alignment frame 232 is U-shaped, and an upper cover 233 is fixed to the end of the alignment frame 232. The upper cover 233 is screwed to the upper side inside the alignment channel 231. Multiple sets of ultrasonic transducers 234 are equidistantly arranged inside the alignment frame 232. The multiple sets of alignment frames 232 are equidistantly arranged along the outer circumference of the impurity removal crystallization vessel 100.

[0030] like Figures 1-4 As shown: A U-shaped alignment frame 232 is inserted in the alignment channel 231 opened inside the stirring auxiliary protrusion 23. The alignment frame 232 is screwed to the upper side inside the alignment channel 231 by the upper cover 233 fixed at its end. The multiple sets of ultrasonic transducers 234 arranged at equal intervals inside the alignment frame 232 and the multiple sets of alignment frames 232 arranged at equal intervals along the outer circumference of the impurity removal crystallization vessel 100 together constitute an ultrasonic array integrated in the crystallization temperature control mechanism 200.

[0031] During operation, the ultrasonic transducer 234 is activated by turning on its external switch. The ultrasonic transducer 234 operates as follows: when a high-frequency AC signal generated by the controller is applied to the piezoelectric ceramic element inside the transducer, the ceramic sheet undergoes rapid and minute expansion and contraction deformation according to the frequency and polarity of the alternating voltage. This deformation is amplified and transmitted through the front and rear metal covers of the transducer, ultimately forming a stable, high-frequency longitudinal mechanical vibration, i.e., ultrasonic vibration, on the radiating surface at the front end of the transducer. This vibration is directly transmitted to the wall of the impurity removal crystallization vessel 100 through the closely contacting alignment frame 232 and stirring auxiliary protrusion 23, and further into the crystallization solution inside the vessel. The high-frequency ultrasonic energy generates cavitation effects and strong microscopic disturbances in the solution, effectively breaking up early-formed micro-crystal nuclei or disrupting the supersaturated state, promoting the generation of more uniform crystal nuclei, and continuously acting on the crystal growth process to prevent excessive crystal growth or agglomeration, thus making the crystal particles smaller, more uniform, and with a regular morphology. The ultrasonic transducer 234 is an existing device and can be purchased and used directly.

[0032] Meanwhile, the cavitation and stirring effects of ultrasound can enhance the macroscopic mixing and mass transfer of the fluid inside the reactor, ensuring a more uniform temperature and concentration field. This, combined with the gradient temperature control provided by the crystallization temperature control mechanism 200 and the heating core column 300, forms a synergistic regulation of the gradient crystallization of aminosulfonic acid. By integrating the ultrasonic transducer 234 inside the stirring auxiliary protrusion 23, efficient ultrasonic intervention in the crystallization process is achieved without introducing internal moving parts or contaminating the material. This significantly improves the particle size distribution and physical morphology of the crystal product, further suppresses impurity encapsulation and eutectic formation, and enhances the purity and crystal quality of the final product. This creates favorable conditions for subsequent purification processes such as filtration, washing, and drying, reducing overall production difficulty and cost.

Claims

1. A gradient crystallization temperature-controlled impurity removal device for aminosulfonic acid, comprising a crystallization vessel (100), characterized in that: The crystallization vessel (100) is provided with a crystallization temperature control mechanism (200) on the outside, and a heating core column (300) is installed on the outside of the crystallization temperature control mechanism (200). The crystallization temperature control mechanism (200) also includes a stirring auxiliary protrusion (23). The heating core column (300) is wrapped with a heat insulation sleeve (400). The heating core column (300) includes an electric heating column (31), and multiple sets of through holes (34) are opened inside the electric heating column (31). A heating rod (32) is inserted inside the through hole (34), and an electric plate (321) is fixed at the bottom of the heating rod (32).

2. The aminosulfonic acid gradient crystallization temperature-controlled impurity removal device according to claim 1, characterized in that: Multiple sets of interference heat exchange protrusions (11) are equidistantly arranged on the impurity removal crystallization vessel (100), and the cross-section of the interference heat exchange protrusions (11) is "C" shaped. A heat exchange space (12) is opened on the outer side of the interference heat exchange protrusions (11). Multiple sets of heat exchange seats (21) are fixed on the inner circumference of the crystallization temperature control mechanism (200), and the distance between two adjacent sets of heat exchange seats (21) is consistent.

3. The aminosulfonic acid gradient crystallization temperature-controlled impurity removal device according to claim 2, characterized in that: The dimensions of the heat exchange base (21) and the heat exchange space (12) are adapted to each other, and multiple sets of the heat exchange base (21) are respectively inserted into the interior of multiple sets of the heat exchange space (12).

4. The aminosulfonic acid gradient crystallization temperature-controlled impurity removal device according to claim 1, characterized in that: Multiple sets of stirring auxiliary protrusions (23) are equidistantly arranged along the outer circumference of the crystallization temperature control mechanism (200). A limiting space (22) is formed between two adjacent sets of stirring auxiliary protrusions (23), and the limiting space (22) is arc-shaped.

5. The aminosulfonic acid gradient crystallization temperature-controlled impurity removal device according to claim 4, characterized in that: The inner wall of the limiting space (22) is provided with two sets of limiting channels (221), and an electric heating column (31) is provided inside it. The electric heating column (31) is arc-shaped, and limiting strips (33) are provided at both ends of the electric heating column (31).

6. The aminosulfonic acid gradient crystallization temperature-controlled impurity removal device according to claim 5, characterized in that: The limiting strip (33) is adapted to the size of the limiting channel (221), and the limiting strip (33) is inserted into the limiting channel (221). Multiple sets of electric heating columns (31) are positioned and installed in multiple sets of limiting spaces (22) through the limiting strip (33) and the limiting channel (221).

7. The aminosulfonic acid gradient crystallization temperature-controlled impurity removal device according to claim 1, characterized in that: The heat insulation sleeve (400) includes heat insulation sleeve A (41) and heat insulation sleeve B (42), and multiple sets of heat insulation sleeve A (41) and heat insulation sleeve B (42) are equidistantly arranged. The heat insulation sleeve A (41) covers the outside of the electric heating column (31), and the heat insulation sleeve B (42) covers the outside of the stirring auxiliary protrusion (23).

8. The aminosulfonic acid gradient crystallization temperature-controlled impurity removal device according to claim 7, characterized in that: The stirring auxiliary protrusion (23) has an alignment channel (231) inside, and an alignment frame (232) is inserted inside the alignment channel (231). The alignment frame (232) is U-shaped. The end of the alignment frame (232) is fixed with a top cover (233), and the top cover (233) is screwed to the upper side inside the alignment channel (231). Multiple sets of ultrasonic transducers (234) are equidistantly arranged inside the alignment frame (232). Multiple sets of alignment frames (232) are equidistantly arranged along the outer circumference of the impurity removal crystallization vessel (100).

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