A continuous crystallization apparatus for sodium glutamate

Abstract

The utility model provides a kind of sodium glutamate continuous crystallization equipment, including one-effect heater, two-effect heater, three-effect heater and gas cylinder, the top of one-effect heater, two-effect heater and three-effect heater is separately installed with one-effect separation chamber, two-effect separation chamber and three-effect separation chamber, the gas cylinder is connected with one-effect heater by first gas pipe, and the one-effect heater is connected with two-effect heater by second gas pipe.The sodium glutamate continuous crystallization equipment, with solubility in one-effect heating process, some capillary crystals are dissolved, so that a part of nucleation crystal is effectively and quickly grown and uniform, continues to evaporate and concentrates in the inside of two-effect heater, and under the transmission of circulating pump, material is circulated in the inside of circulating pipe and is flashed in separation chamber, until the volume of crystal meets the requirement, in the process of continuous crystallization, sodium glutamate can be fully crystallized and grown, and sodium glutamate meeting large volume standard can be produced.

Description

Technical Field

[0001] This utility model relates to the field of monosodium glutamate (MSG) production technology, and in particular to a continuous crystallization device for MSG. Background Technology

[0002] Monosodium glutamate (MSG) is the monosodium salt of glutamic acid and is a widely used flavor enhancer. During the production of MSG, the evaporation and crystallization process can cause the MSG crystals to be too small. Small MSG crystals not only reduce product quality and yield, but also increase production costs and energy consumption, and have a negative impact on downstream applications. Utility Model Content

[0003] The purpose of this invention is to provide a continuous crystallization device for monosodium glutamate (MSG), which can produce large-volume MSG that meets the standards.

[0004] This utility model provides a continuous crystallization device for monosodium glutamate, including a first-effect heater, a second-effect heater, a third-effect heater, and a gas distribution cylinder. A first-effect separation chamber, a second-effect separation chamber, and a third-effect separation chamber are respectively installed on the top of the first-effect heater, the second-effect heater, and the third-effect heater. The gas distribution cylinder is connected to the first-effect heater via a first gas supply pipe. The first-effect heater and the second-effect heater are connected via a second gas supply pipe. The second-effect heater is connected to the third-effect heater via a third gas supply pipe. A circulation pump is installed inside each of the first-effect heater, the second-effect heater, and the third-effect heater. Circulation pipes are installed at the two output ends of the circulation pumps. A discharge assembly is installed on the circulation pipes, and the discharge assembly discharges the material from the first-effect separation chamber, the second-effect separation chamber, and the third-effect separation chamber.

[0005] As a further optimization scheme, it also includes a finished product tank and a raw material tank. One end of the fourth material transfer pipe is installed on the triple-effect separation chamber, and the other end of the fourth material transfer pipe is connected to the raw material tank. The triple-effect separation chamber is connected to the first-effect separation chamber through the first material transfer pipe, and the triple-effect separation chamber is connected to the second-effect separation chamber through the second material transfer pipe. One end of the third material transfer pipe is installed on the second-effect separation chamber, and the other end of the third material transfer pipe is connected to the finished product tank.

[0006] As a further optimization, the fourth material transfer pipe is connected to the raw material tank via a pump.

[0007] As a further optimization, a fourth gas supply pipe is installed at one end of the triple-effect heater, and a condenser is installed at the other end of the fourth gas supply pipe.

[0008] As a further optimization, the discharge assembly includes a mounting housing, the upper and lower end faces of which are connected to a circulation pipe. Fine mesh screens are installed on both the upper and lower parts of the inner cavity of the mounting housing. An outlet pipe is installed on the outer wall of the mounting housing. A mounting bracket is installed inside the outlet pipe. A pneumatic telescopic rod is installed at the center of the mounting bracket. A coarse mesh screen is installed at the output end of the pneumatic telescopic rod. A high negative pressure fan is installed at the end of the outlet pipe.

[0009] As a further optimization, the coarse screen is located inside the mounting housing and is positioned between two fine screens.

[0010] As a further optimization, the discharge ports of the first-effect separation chamber, the second-effect separation chamber and the third-effect separation chamber are all uniformly provided with discharge ports, which are connected to the end of the outflow pipe where a high negative pressure fan is installed.

[0011] As a further optimization, the fine mesh screen has a mesh count of 100, and the coarse mesh screen has a mesh count of 80.

[0012] This invention provides an improved continuous crystallization device for monosodium glutamate (MSG), which has the following improvements and advantages compared with the prior art: In this continuous crystallization device, as the solubility increases during the first-effect heating process, some capillary crystals are dissolved, allowing a portion of the nucleated crystals to grow effectively, rapidly, and uniformly. The material exits the first-effect separation chamber and enters the second-effect separation chamber, where it continues to evaporate and concentrate. Furthermore, under the transmission of a circulating pump, the material circulates within the circulation pipe through the separation chamber for flash evaporation until the crystal volume meets the requirements. During the continuous crystallization process, MSG can be fully crystallized and grown, producing MSG that meets large-volume standards. Attached Figure Description

[0013] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the circulating pump and circulating pipe inside the separation chamber of this utility model;

[0016] Figure 3 This is a schematic diagram of the discharge assembly of this utility model;

[0017] Figure 4 This is a flowchart of the production process of this utility model.

[0018] Explanation of reference numerals in the attached figures:

[0019] 1-First-effect separation chamber, 2-Second-effect separation chamber, 3-Third-effect separation chamber, 4-Condenser, 5-Gas distribution cylinder, 6-Finished product tank, 7-Raw material tank, 8-Discharge assembly, 81-Mounting housing, 82-Fine mesh screen, 83-Coarse mesh screen, 84-Pneumatic telescopic rod, 85-Mounting bracket, 86-High negative pressure fan, 87-Pneumatic telescopic rod, 9-Suction pump, 10-First material transfer pipe, 11-Second material transfer pipe, 12-Third material transfer pipe, 13-First air supply pipe, 14-Second air supply pipe, 15-Third air supply pipe, 16-Fourth air supply pipe, 17-First-effect heater, 18-Second-effect heater, 19-Third-effect heater, 20-Fourth material transfer pipe, 21-Circulation pipe, 22-Circulation pump, 23-Discharge port. Detailed Implementation

[0020] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0021] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0022] In the description of this utility model, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified. Furthermore, the terms "installed," "connected," and "linked" should be interpreted broadly; for example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0023] Please see Figure 1-4 This utility model provides a technical solution for a continuous crystallization equipment for monosodium glutamate (MSG), including a first-effect heater 17, a second-effect heater 18, a third-effect heater 19, and a gas distribution cylinder 5. The first-effect heater 17 directly receives external live steam (such as boiler steam), has the highest operating temperature (usually above 120℃), and the strongest heat source energy. The second-effect heater 18 uses the secondary steam generated by the first effect as a heat source, with a temperature about 10-20℃ lower than the first effect, belonging to the medium temperature range. The third-effect heater 19 relies on the secondary steam from the second effect, with the lowest temperature (possibly as low as 60-80℃). The gas distribution cylinder 5 transfers high-pressure steam to the interior of each heater to provide heat. The tops of the first-effect heater 17, the second-effect heater 18, and the third-effect heater 19 are respectively equipped with a first-effect separation chamber 1, a second-effect separation chamber 2, and a third-effect separation chamber 3. The MSG raw material flashes and crystallizes inside the three separation chambers. The gas distribution cylinder 5 and... The first-effect heaters 17 are connected to each other via a first gas supply pipe 13. The first-effect heaters 17 and the second-effect heaters 18 are connected via a second gas supply pipe 14, thereby enabling communication between the heaters for the transfer of hot steam. The second-effect heater 18 is connected to the third-effect heater 19 via a third gas supply pipe 15. Each gas supply pipe transfers hot steam between the heaters. Each of the first-effect heaters 17, the second-effect heater 18, and the third-effect heater 19 is equipped with a circulation pump 22. The power of the circulation pump 22 circulates the material between the separation chamber and the heating chamber for circulating flash evaporation of the raw materials. Circulation pipes 21 are installed at the two output ends of the circulation pump 22. A discharge assembly 8 is installed on the circulation pipe 21. The discharge assembly 8 discharges the material from the first-effect separation chamber 1, the second-effect separation chamber 2, and the third-effect separation chamber 3. The discharge assembly 8 is used to discharge sodium glutamate crystals that meet the requirements.

[0024] refer to Figure 1 and Figure 4The material is conveyed to the triple-effect separation chamber 3, flash-evaporated, and then enters the lower triple-effect heater 19 for heat exchange. During the internal circulation process, it continues to evaporate, causing the material to reach supersaturation and form crystal nuclei. The crystals precipitate and the material enters the first-effect separation chamber 1. Under the heating of the first-effect heater 17, it continues to evaporate and concentrate, increasing the crystal content. During the heating process of the first effect, as the solubility increases, some capillary crystals are dissolved, allowing some nucleated crystals to effectively and rapidly grow larger and more uniform. The material exits from the first-effect separation chamber 1 and enters the interior of the second-effect separation chamber 2. Inside the second-effect heater 18, it continues to evaporate and concentrate. Under the transmission of the circulation pump 22, the material circulates inside the circulation pipe 21 and flash-evaporates through the separation chamber until the crystal volume meets the requirements. Then, it is discharged by the discharge component 8. Through multiple continuous flash evaporation and crystallization, sodium glutamate crystals that meet the requirements are produced.

[0025] like Figure 1 As shown, the system includes a finished product tank 6 and a raw material tank 7. The finished product tank 6 contains qualified monosodium glutamate (MSG) crystals, while the raw material tank 7 contains raw materials used to produce MSG crystals. One end of a fourth transfer pipe 20 is installed on the triple-effect separation chamber 3, and the other end of the fourth transfer pipe 20 is connected to the raw material tank 7. The triple-effect separation chamber 3 is connected to the first-effect separation chamber 1 via a first transfer pipe 10, and to the second-effect separation chamber 2 via a second transfer pipe 11. One end of a third transfer pipe 12 is installed on the second-effect separation chamber 2, and the other end of the third transfer pipe 12 is connected to the finished product tank 6. Each transfer pipe is used for the internal transfer of MSG within each separation chamber.

[0026] Raw materials are transferred from raw material tank 7 to the interior of triple-effect separation chamber 3 via fourth transfer pipe 20 for initial separation. Then, they are transferred to the interior of first-effect separation chamber 1 via first transfer pipe 10 for secondary separation. Finally, they are transferred to the interior of second-effect separation chamber 2 via second transfer pipe 11 for final flash separation. The finished product is then transferred to the interior of finished product tank 6 via third transfer pipe 12 for finished product collection.

[0027] In order to transfer raw materials from the inside of the raw material tank 7, the fourth transfer pipe 20 is connected to the raw material tank 7 through a pump 9. After the pump 9 is working, it sucks the raw materials out of the inside of the raw material tank 7 and transfers them through the fourth transfer pipe 20.

[0028] In order to recover the water vapor that has passed through each heater, a fourth gas pipe 16 is installed on one end of the triple-effect heater 19, and a condenser 4 is installed on the other end of the fourth gas pipe 16. The water vapor used for heating finally flows into the condenser 4 for cooling, and then forms water for recovery.

[0029] like Figure 3As shown, in order to discharge the qualified monosodium glutamate crystals, a discharge assembly 8 is used to discharge the finished product. The discharge assembly 8 includes a mounting shell 81, which is a container part of the discharge assembly and serves a load-bearing function. The upper and lower end faces of the mounting shell 81 are connected to the circulation pipe 21. The material is screened inside the mounting shell 81 under the transmission of the circulation pipe 21. Fine mesh screens 82 are installed on both the upper and lower parts of the inner cavity of the mounting shell 81. The fine mesh screens 82 allow smaller crystals to pass through, and the circulation continues for continuous flash crystallization. An outlet pipe 87 is connected to the outer wall of the mounting shell 81. The outlet pipe 87 is equipped with pneumatic telescopic rod 84 and other parts. An installation bracket 85 is installed inside the outlet pipe 87. The installation bracket 85 is used to load the pneumatic telescopic rod 84. The pneumatic telescopic rod 84 is installed at the center of the installation bracket 85. A coarse screen 83 is installed at the output end of the pneumatic telescopic rod 84. The coarse screen 83 pulls out the large crystals that meet the requirements. During the pulling process, the crystals that do not meet the requirements will continue to circulate through the coarse screen 83. A high negative pressure fan 86 is installed at the end of the outlet pipe 87. The negative pressure of the high negative pressure fan 86 sucks out the crystals pulled out by the coarse screen 83 and discharges them.

[0030] exist Figure 3 In the process of circulating through the circulation pipe 21, the crystals pass through the interior of the mounting shell 81. The fine mesh screen 82 allows smaller crystals to pass through, and the circulation continues for continuous flash crystallization. The pneumatic telescopic rod 84 drives the coarse mesh screen 83 to push and pull. The coarse mesh screen 83 pulls out the large crystals that meet the requirements, and the high negative pressure fan 86 sucks out the crystals for finished product discharge.

[0031] In order to screen the crystals in the circulation process, a coarse screen 83 is located inside the mounting housing 81 and is positioned between two fine screens 82, so that the coarse screen 83 can discharge the crystals between them.

[0032] In order to transfer the discharged material to the next step, the discharge ports 23 are uniformly opened at the discharge points of the first-effect separation chamber 1, the second-effect separation chamber 2 and the third-effect separation chamber 3. The discharge ports 23 are connected to the end of the outlet pipe 87 which is equipped with a high negative pressure fan 86, so that the material can be transferred through the transfer pipe.

[0033] In order to screen out the qualified crystals, the fine screen 82 has a mesh size of 100 mesh and the coarse screen 83 has a mesh size of 80 mesh. Crystals that do not meet the 80 mesh requirement will not be pushed out by the coarse screen 83, and can continue to be recycled and flashed through the 100 mesh fine screen 82.

[0034] Working process: After the pump 9 starts working, it draws the raw material from the inside of the raw material tank 7 and transfers it through the fourth transfer pipe 20. The fourth transfer pipe 20 transfers the material to the inside of the triple-effect separation chamber 3 for the first separation. Then, it is transferred through the first transfer pipe 10 to the inside of the first-effect separation chamber 1 for the second separation. Finally, it is transferred through the second transfer pipe 11 to the inside of the second-effect separation chamber 2 for the last flash separation. The material enters the first-effect separation chamber 1 and continues to evaporate and concentrate under the heating of the first-effect heater 17. The crystal content increases, and as the solubility increases during the first-effect heating process, some capillary crystals are dissolved, which makes some nucleated crystals grow effectively, quickly and uniformly. The material exits the first-effect separation chamber 1 and enters the inside of the second-effect separation chamber 2. It continues to evaporate and concentrate inside the second-effect heater 18. Under the transmission of the circulation pump 22, the material circulates in the circulation pipe 21 and flashes through the separation chamber until the crystal volume meets the requirements. Then, the qualified crystals are discharged by the discharge component 8 to complete the collection of finished products.

[0035] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A continuous crystallization apparatus for monosodium glutamate, characterized in that, The system includes a single-effect heater (17), a double-effect heater (18), a triple-effect heater (19), and a gas distribution cylinder (5). The tops of the single-effect heater (17), the double-effect heater (18), and the triple-effect heater (19) are respectively equipped with a single-effect separation chamber (1), a double-effect separation chamber (2), and a triple-effect separation chamber (3). The gas distribution cylinder (5) is connected to the single-effect heater (17) via a first gas supply pipe (13), and the single-effect heater (17) is connected to the double-effect heater (18) via a second gas supply pipe (14). The two-effect heater (18) is connected to the three-effect heater (19) through the third gas supply pipe (15). The first-effect heater (17), the two-effect heater (18) and the three-effect heater (19) are all equipped with a circulation pump (22). The two output ends of the circulation pump (22) are equipped with circulation pipes (21). The circulation pipes (21) are equipped with a discharge assembly (8). The discharge assembly (8) discharges the materials from the first-effect separation chamber (1), the second-effect separation chamber (2) and the third-effect separation chamber (3).

2. The monosodium glutamate continuous crystallization equipment according to claim 1, characterized in that, It also includes a finished product tank (6) and a raw material tank (7). One end of the fourth material transfer pipe (20) is installed on the triple-effect separation chamber (3), and the other end of the fourth material transfer pipe (20) is connected to the raw material tank (7). The triple-effect separation chamber (3) is connected to the first-effect separation chamber (1) through the first material transfer pipe (10). The triple-effect separation chamber (3) is connected to the second-effect separation chamber (2) through the second material transfer pipe (11). One end of the third material transfer pipe (12) is installed on the second-effect separation chamber (2), and the other end of the third material transfer pipe (12) is connected to the finished product tank (6).

3. The monosodium glutamate continuous crystallization equipment according to claim 2, characterized in that, The fourth material transfer pipe (20) is connected to the raw material tank (7) via a pump (9).

4. The monosodium glutamate continuous crystallization equipment according to claim 1, characterized in that, One end of the fourth gas supply pipe (16) is installed on the triple-effect heater (19), and the other end of the fourth gas supply pipe (16) is equipped with a condenser (4).

5. A continuous crystallization apparatus for monosodium glutamate according to claim 1, characterized in that, The discharge assembly (8) includes a mounting housing (81), the upper and lower end faces of which are connected to the circulation pipe (21). Fine mesh screens (82) are installed in both the upper and lower parts of the inner cavity of the mounting housing (81). An outlet pipe (87) is installed on the outer side wall of the mounting housing (81). An installation bracket (85) is installed inside the outlet pipe (87). A pneumatic telescopic rod (84) is installed at the center of the installation bracket (85). A coarse mesh screen (83) is installed at the output end of the pneumatic telescopic rod (84). A high negative pressure fan (86) is installed at the end of the outlet pipe (87).

6. A continuous crystallization apparatus for monosodium glutamate according to claim 5, characterized in that, The coarse mesh screen (83) is located inside the mounting housing (81) and is positioned between two fine mesh screens (82).

7. A continuous crystallization apparatus for monosodium glutamate according to claim 6, characterized in that, The discharge ports (23) of the first-effect separation chamber (1), the second-effect separation chamber (2) and the third-effect separation chamber (3) are all uniformly provided with discharge ports (23), and the discharge ports (23) are connected to the end of the outlet pipe (87) where a high negative pressure fan (86) is installed.

8. A continuous crystallization apparatus for monosodium glutamate according to claim 5, characterized in that, The fine mesh screen (82) has a mesh count of 100, and the coarse mesh screen (83) has a mesh count of 80.

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