Quick-setting crystallizer

Abstract

The utility model discloses a quick-setting crystallizer which comprises an outer cylinder body, a spiral flow deflector is arranged between the outer cylinder body and an inner cylinder body, a cooling interlayer is fixedly installed on the inner side of the inner cylinder body, the upper end of the outer side of a shaft rod is fixedly connected with a push type stirring blade, and the lower end of the outer side of the shaft rod is fixedly connected with an anchor type stirring blade. The bottom end of the shaft rod is fixedly connected with a flow guide cone, feed liquid enters from a top feed port, a cooling medium is reversely introduced into each interlayer from top to middle to bottom, cooling water spirally moves through spiral flow deflectors, and the heat exchange coefficient is increased by more than 40%; crystal mush is guided by the flow guide cone to form secondary circulation, full-volume mixing is realized by matching with the double-structure stirring blades, and a temperature gradient of 10-25 DEG C / m is established through segmented temperature control, so that ordered growth of crystals is promoted; according to the device, the rotating speed of the shaft rod is controlled through the servo motor, the flowing speed of materials is adjusted, and the materials can be uniformly mixed, so that the cooling efficiency can be improved, the crystallization efficiency is improved, and the energy consumption is reduced.

Description

Technical Field

[0001] This utility model relates to the field of chemical equipment technology, and more specifically, to a rapid crystallizer. Background Technology

[0002] A crystallizer is a device used to precipitate solid crystals from a solution, melt, or gas. Its core function is to promote the crystallization process of a substance by controlling conditions such as temperature, concentration, or pressure, thereby achieving the separation, purification, or preparation of specific materials. In the chemical industry, it is used to produce inorganic salts (such as sodium sulfate and sodium chloride), fertilizers (such as ammonium nitrate and urea), and organic compounds (such as citric acid). In chemical synthesis, crystallization removes impurities and improves product purity.

[0003] Traditional crystallizers generally suffer from low cooling efficiency and long crystallization cycles. Conventional equipment uses a single-layer jacketed cooling structure, resulting in a single solution flow path and insufficient heat exchange; an unreasonable stirring mechanism design can easily cause crystal deposition; and the lack of temperature gradient control affects crystallization uniformity. There is an urgent need for a new type of crystallization device that can achieve rapid cooling and enhanced mass transfer.

[0004] No effective solutions have yet been proposed to address the problems in the relevant technologies. Utility Model Content

[0005] In view of the problems in the related technologies, this utility model proposes a rapid crystallizer to overcome the above-mentioned technical problems existing in the existing related technologies.

[0006] Therefore, the specific technical solution adopted by this utility model is as follows:

[0007] A rapid crystallizer includes an outer cylinder and an inner cylinder on the inner side of the outer cylinder. A spiral guide vane is provided between the outer cylinder and the inner cylinder. A cooling jacket is fixedly installed on the inner side of the inner cylinder. A shaft is provided at the center of the cooling jacket. A propeller-type stirring blade is fixedly connected to the upper outer end of the shaft, and an anchor-type stirring blade is fixedly connected to the lower outer end of the shaft. A guide cone is fixedly connected to the bottom end of the shaft. A heat-conducting pipe is fixedly connected to the outer side of the cooling jacket. A circulation pump is provided on the heat-conducting pipe, and a temperature controller is provided below the circulation pump.

[0008] As a further embodiment of this utility model, an annular cooling cavity is provided between the outer cylinder and the inner cylinder, and the cooling interlayer is provided with upper, middle and lower groups.

[0009] As a further embodiment of this utility model, cooling conduits are fixedly connected to both the upper and lower ends of the spiral guide vane, and a servo motor is provided at the end of the shaft.

[0010] As a further embodiment of this utility model, the upper and lower ends of the outer cylinder and the inner cylinder are sealed by annular plates, and a feed inlet is provided at the top of the inner cylinder.

[0011] As a further embodiment of this utility model, the lower ends of the outer cylinder and the inner cylinder are provided with discharge ports, and the discharge ports are rotatably connected to the shaft.

[0012] As a further embodiment of this utility model, the cone angle of the guide cone is 60°, and the surface of the guide cone is provided with radial guide grooves.

[0013] As a further embodiment of this utility model, the inner cylinder is provided with three sets of temperature sensors at different heights.

[0014] The beneficial effects of this utility model are as follows:

[0015] This invention utilizes an outer cylinder, inner cylinder, spiral guide vanes, cooling jackets, propeller-type stirring blades, and anchor-type stirring blades. The molten material enters from the top inlet, and the cooling medium flows counter-clockwise through each jacket in the order of top → middle → bottom. The spiral guide vanes cause the cooling water to move in a spiral motion, increasing the heat transfer coefficient by over 40%. The guide cone guides the crystal slurry to form a secondary circulation, and the dual-structure stirring blades achieve full-volume mixing. A temperature gradient of 10-25℃ / m is established through segmented temperature control, promoting orderly crystal growth. The device uses a servo motor to control the shaft speed, adjusting the material flow rate and ensuring uniform mixing, thereby improving cooling efficiency, enhancing crystallization efficiency, and reducing energy consumption. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall structure of a rapid crystallizer according to an embodiment of the present utility model;

[0018] Figure 2 This is a schematic diagram of the installation position of the cooling jacket of a rapid crystallizer according to an embodiment of the present invention;

[0019] Figure 3 This is a schematic diagram of the installation position of the spiral guide plate of a fast crystallizer according to an embodiment of the present utility model;

[0020] Figure 4 This is a schematic diagram of the overall structure of the spiral guide plate of a fast crystallizer according to an embodiment of the present utility model;

[0021] Figure 5 This is a schematic diagram of the overall structure of the cooling jacket of a fast crystallizer according to an embodiment of the present invention;

[0022] Figure 6 This is a schematic diagram showing the installation positions of the shaft, propeller-type stirring blade, anchor-type stirring blade, and guide cone of the cooling jacket of a rapid crystallizer according to an embodiment of the present invention.

[0023] In the picture:

[0024] 1. Outer cylinder; 2. Inner cylinder; 3. Spiral guide vane; 4. Cooling duct; 5. Cooling jacket; 6. Heat pipe; 7. Circulating pump; 8. Temperature controller; 9. Shaft; 10. Propeller agitator; 11. Anchor agitator; 12. Guide cone; 13. Feed inlet; 14. Discharge outlet. Detailed Implementation

[0025] To further illustrate the various embodiments, the present invention provides accompanying drawings, which are part of the disclosure of the present invention. These drawings are mainly used to illustrate the embodiments and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, those skilled in the art should be able to understand other possible implementation methods and the advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are usually used to represent similar components.

[0026] According to an embodiment of the present invention, a rapid crystallizer is provided.

[0027] Please refer to the instruction manual appendix. Figure 1-6 According to an embodiment of the present invention, a rapid crystallizer includes an outer cylinder 1, an inner cylinder 2 on the inner side of the outer cylinder 1, a spiral guide vane 3 between the outer cylinder 1 and the inner cylinder 2, a cooling jacket 5 fixedly installed on the inner side of the inner cylinder 2, a shaft 9 at the center of the cooling jacket 5, a propeller-type stirring blade 10 fixedly connected to the upper outer side of the shaft 9, an anchor-type stirring blade 11 fixedly connected to the lower outer side of the shaft 9, a guide cone 12 fixedly connected to the bottom end of the shaft 9, a heat-conducting pipe 6 fixedly connected to the outer side of the cooling jacket 5, a circulation pump 7 on the heat-conducting pipe 6, and a temperature controller 8 on the lower side of the circulation pump 7.

[0028] The inner and outer cylinders form a double-layer structure, creating an annular cooling chamber. The inner cylinder is made of 316L stainless steel, while the outer cylinder is made of carbon steel. Spiral guide vanes are installed in the interlayer, with an inclination angle of 30-45° to enhance the turbulence of the cooling medium.

[0029] During operation, the slurry enters from the top inlet, and the cooling medium is introduced into each jacket in a counter-current order from top to middle to bottom. Spiral guide vanes cause the cooling water to move in a spiral motion, increasing the heat transfer coefficient by over 40%. The guide cone guides the crystal slurry to form a secondary circulation, which, combined with the dual-structure stirring blades, achieves full-volume mixing. A temperature gradient of 10-25℃ / m is established through segmented temperature control, promoting orderly crystal growth.

[0030] In one embodiment, please refer to the appendix to the specification. Figure 1-6 As a further embodiment of this utility model, an annular cooling cavity is provided between the outer cylinder 1 and the inner cylinder 2, and the cooling interlayer 5 is provided with three sets of upper, middle and lower layers.

[0031] Three independent cooling jackets 5 are arranged along the axial direction, with each jacket equipped with an independent heat pipe 6 for circulating cooling medium. Together with a circulating pump 7 and a temperature controller 8, segmented temperature control can be achieved, realizing a multi-stage cooling system for the device.

[0032] In one embodiment, please refer to the appendix to the specification. Figure 1-6 As a further embodiment of this utility model, cooling conduits 4 are fixedly connected to both the upper and lower ends of the spiral guide vane 3, and a servo motor is provided at the end of the shaft 9.

[0033] The servo motor can drive the shaft 9 to rotate, which in turn drives the propeller-type stirring blade 10 and the anchor-type stirring blade 11 to rotate, with the speed adjustable from 50 to 200 rpm.

[0034] In one embodiment, please refer to the appendix to the specification. Figure 1-6 As a further embodiment of this utility model, the upper and lower ends of the outer cylinder 1 and the inner cylinder 2 are sealed by annular plates, and a feed inlet 13 is provided above the inner cylinder 2.

[0035] Material is fed into the device through inlet 13.

[0036] In one embodiment, please refer to the appendix to the specification. Figure 1-6 As a further embodiment of this utility model, the lower ends of the outer cylinder 1 and the inner cylinder 2 are provided with a discharge port 14, and the discharge port 14 is rotatably connected to the shaft 9.

[0037] In one embodiment, please refer to the appendix to the specification. Figure 1-6 As a further embodiment of this utility model, the cone angle of the guide cone 12 is 60°, and the surface of the guide cone 12 is provided with radial guide grooves.

[0038] Located at the bottom of the cylinder, with a cone angle of 60°, and radial guide grooves on the surface, it guides the crystal slurry to form a swirling flow.

[0039] In one embodiment, please refer to the appendix to the specification. Figure 1-6As a further embodiment of this utility model, the inner cylinder 2 is provided with three sets of temperature sensors at different heights.

[0040] Three sets of PT100 temperature sensors are arranged at different heights in the cylinder and connected to a PLC control system to achieve precise temperature control.

[0041] During operation, the liquid material enters from the top inlet 13, and the cooling medium is introduced into each cooling jacket 5 in the reverse order from top to middle to bottom. The spiral guide vane 3 causes the cooling water to enter the spiral guide vane 3 from the cooling pipe 4, so that the cooling water moves in a spiral motion, increasing the heat transfer coefficient by more than 40%. The guide cone 12 guides the crystal slurry to form a secondary circulation, and with the help of the dual-structure stirring blades (propeller stirring blade 10 and anchor stirring blade 11), full-volume mixing is achieved. A temperature gradient of 10-25℃ / m is established through segmented temperature control to promote the orderly growth of crystals.

[0042] This equipment improves cooling efficiency by more than 50%, reduces crystallization time to 1 / 3 of conventional equipment, concentrates crystal particle size distribution with D50 controlled at 80-120μm, reduces energy consumption by about 35%, and is suitable for crystallizing heat-sensitive materials. The modular sandwich design facilitates maintenance and cleaning.

[0043] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A rapid crystallizer, comprising an outer cylinder (1), characterized in that: The inner side of the outer cylinder (1) is provided with an inner cylinder (2), and a spiral guide vane (3) is provided between the outer cylinder (1) and the inner cylinder (2). A cooling jacket (5) is fixedly installed on the inner side of the inner cylinder (2). A shaft (9) is provided in the center of the cooling jacket (5). A propulsion stirring blade (10) is fixedly connected to the upper outer side of the shaft (9). An anchor stirring blade (11) is fixedly connected to the lower outer side of the shaft (9). A guide cone (12) is fixedly connected to the bottom end of the shaft (9). A heat-conducting pipe (6) is fixedly connected to the outside of the cooling jacket (5), and a circulation pump (7) is provided on the heat-conducting pipe (6). A temperature controller (8) is provided on the lower side of the circulation pump (7).

2. The rapid crystallizer according to claim 1, characterized in that: An annular cooling cavity is provided between the outer cylinder (1) and the inner cylinder (2), and the cooling interlayer (5) is provided with three sets of upper, middle and lower layers.

3. The rapid crystallizer according to claim 1, characterized in that: The upper and lower ends of the spiral guide vane (3) are fixedly connected to cooling pipes (4), and the end of the shaft (9) is equipped with a servo motor.

4. A rapid solidification crystallizer according to claim 1, characterized in that: The upper and lower ends of the outer cylinder (1) and the inner cylinder (2) are sealed by annular plates, and the inner cylinder (2) is provided with a feed inlet (13) at the top.

5. A rapid solidification crystallizer according to claim 1, characterized in that: The lower ends of the outer cylinder (1) and the inner cylinder (2) are provided with discharge ports (14), and the discharge ports (14) are rotatably connected to the shaft (9).

6. A rapid solidification crystallizer according to claim 1, characterized in that: The cone angle of the guide cone (12) is 60°, and the surface of the guide cone (12) is provided with radial guide grooves.

7. A rapid crystallizer according to claim 1, characterized in that: The inner cylinder (2) is equipped with three sets of temperature sensors at different heights.

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