Primary sodium lactate dehydration device with cooling structure

Abstract

The utility model discloses a primary sodium lactate dehydration device with cooling structure, including retort, retort cover and control box, the retort lateral wall is installed with first heating jacket, the retort lower intercommunication is equipped with the discharge pipe, the discharge pipe lateral wall is installed with second heating jacket, the retort cover upper intercommunication is equipped with a feeding pipe and multiple exhaust pipes, and the common intercommunication of multiple exhaust pipes is equipped with the gas outlet pipe, the gas outlet pipe is equipped with the cooling mechanism for reducing liquid temperature, the cooling mechanism includes the first cross pipe of setting at the one end of gas outlet pipe away from exhaust pipe lower, the utility model discloses set up the cooling mechanism, not only realizes the quick, stable condensation of water vapor, can also realize the quick cooling of sodium lactate in retort after distillation, and the cooling time is greatly shortened, and the production efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of primary sodium lactate processing technology, and in particular to a primary sodium lactate dehydration device with a cooling structure. Background Technology

[0002] In the primary sodium lactate processing technology, dehydration is one of the core steps. Its core objective is to remove excess water from the sodium lactate raw material and increase the sodium lactate concentration to meet the material concentration requirements of subsequent purification, molding, or application scenarios. The primary sodium lactate dehydration unit, as a key piece of equipment for this process, typically uses distillation to separate water from sodium lactate (boiling point 227.6℃) and water (boiling point 100℃) based on the difference in boiling points. The dehydration efficiency, material recovery rate, and cooling performance of the unit directly affect the overall production efficiency and product quality.

[0003] However, most existing primary sodium lactate dehydration devices have significant shortcomings in the cooling process: some devices use natural static cooling, which relies on the ambient temperature gradient for heat transfer. This method is greatly affected by the ambient temperature and humidity, resulting in an extremely slow cooling rate. This not only significantly extends the production cycle and reduces overall production efficiency, but may also cause some sodium lactate to undergo thermal decomposition or property changes due to the material being in a high-temperature state for a long time, affecting product purity. To solve the above problems, this utility model proposes a primary sodium lactate dehydration device with a cooling structure. Utility Model Content

[0004] The main objective of this invention is to provide a primary sodium lactate dehydration device with a cooling structure, which can effectively solve the problems in the background art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A primary sodium lactate dehydration device with a cooling structure includes a distillation kettle, a kettle lid, and a control box. A first heating jacket is installed on the side wall of the distillation kettle. A discharge pipe is connected to the bottom of the distillation kettle, and a second heating jacket is installed on the side wall of the discharge pipe. An inlet pipe and multiple exhaust pipes are connected to the kettle lid. A common vent pipe is connected to the multiple exhaust pipes. A cooling mechanism for reducing the liquid temperature is provided on the vent pipe. The cooling mechanism includes a first horizontal pipe located below the end of the vent pipe furthest from the exhaust pipe. A second horizontal pipe is connected to the lower end of the first horizontal pipe via multiple flow pipes. A drain pipe is connected to the lower end of the second horizontal pipe. A cooling box is fixedly connected to the multiple flow pipes. A water injection pipe and a water outlet pipe are connected to the cooling box. A liquid injection pipe and a liquid outlet pipe are connected to the first heating jacket. An interception mechanism for intercepting sodium lactate droplets is provided inside the kettle lid.

[0006] Preferably, the interception mechanism includes a first baffle plate and a second baffle plate fixedly connected to the inner wall of the vessel lid, and both the first baffle plate and the second baffle plate have multiple through holes at their upper ends.

[0007] Preferably, a motor is fixedly connected to the upper end of the kettle lid, a stirring shaft is fixedly connected to the output shaft of the motor, and multiple stirring plates are fixedly connected to the side wall of the stirring shaft.

[0008] Preferably, a scraper is fixedly connected to the side wall of the stirring shaft, and the side wall of the scraper has an arc surface.

[0009] Preferably, the side wall of the air outlet pipe is fitted with a first insulation sleeve, and the side wall of the cooling box is fitted with a second insulation sleeve.

[0010] Preferably, the bottom of the cooling box is provided with an inclined surface, and multiple electric heating tubes are installed on the side wall of the cooling box.

[0011] Compared with the prior art, the present invention has the following beneficial effects: This device is equipped with a cooling mechanism, which not only enables rapid and stable condensation of water vapor, but also enables rapid cooling of sodium lactate in the distillation kettle after distillation, greatly shortening the cooling time and improving production efficiency. This device is equipped with an interception mechanism, which consists of a first baffle plate and a second baffle plate inside the vessel lid. This interception mechanism effectively reduces the loss of sodium lactate droplets with water vapor and improves the material recovery rate. This device is equipped with a stirring plate and a scraper. The coordinated design of the stirring shaft, stirring plate, and scraper avoids uneven heating of raw materials and adhesion to the vessel wall, thus ensuring product quality. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of a primary sodium lactate dehydration device with a cooling structure proposed in this utility model; Figure 2 This is a side view of a primary sodium lactate dehydration device with a cooling structure proposed in this utility model; Figure 3 This is another side view of a primary sodium lactate dehydration device with a cooling structure proposed in this utility model; Figure 4 This is a top view of a primary sodium lactate dehydration device with a cooling structure proposed in this utility model.

[0013] In the diagram: 1. Distillation vessel, 2. Scraper, 3. First heating jacket, 4. Stirring shaft, 5. Vessel lid, 6. Exhaust pipe, 7. Gas outlet pipe, 8. First horizontal pipe, 9. Flow pipe, 10. Cooling box, 11. Second horizontal pipe, 12. Liquid injection pipe, 13. Liquid outlet pipe, 14. Feed pipe, 15. Control box, 16. Motor, 17. Electric heating tube, 18. Drain pipe, 19. Second heating jacket, 20. First baffle plate, 21. Second baffle plate. Detailed Implementation

[0014] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0015] like Figure 1-4 As shown, a primary sodium lactate dehydration device with a cooling structure includes a distillation vessel 1, a vessel cover 5, and a control box 15. A first heating jacket 3 is installed on the side wall of the distillation vessel 1, and a discharge pipe (with a valve) is connected to the bottom of the distillation vessel 1. A second heating jacket 19 is installed on the side wall of the discharge pipe. The first heating jacket 3 and the second heating jacket 19 are existing technologies in the field of reaction vessels, so they will not be described in detail. A feed pipe 14 (with a valve) and multiple exhaust pipes 6 are connected to the vessel cover 5. A gas outlet pipe 7 is connected to the multiple exhaust pipes 6. Temperature sensors (shown in the figure) are installed on the side walls of the distillation vessel 1 and the cooling box 10. Liquid level gauges (not shown in the figure) are installed on the vessel cover 5 and the cooling box 10. A temperature controller is installed in the control box 15.

[0016] The vent pipe 7 is equipped with a cooling mechanism for reducing the liquid temperature. The cooling mechanism includes a first horizontal pipe 8 located at the end of the vent pipe 7 away from the exhaust pipe 6. The lower end of the first horizontal pipe 8 is connected to a second horizontal pipe 11 through multiple flow pipes 9. The lower end of the second horizontal pipe 11 is connected to a drain pipe 18 (with a valve on it). A cooling box 10 is fixedly connected to the multiple flow pipes 9. The cooling box 10 is equipped with a water injection pipe and a water outlet pipe (with a valve on it) that are connected to its interior. The first heating jacket 3 is equipped with a liquid injection pipe 12 and a liquid outlet pipe 13 (with a valve on it) that are connected to its interior.

[0017] The vessel lid 5 is equipped with an interception mechanism for intercepting sodium lactate droplets. The interception mechanism includes a first baffle plate 20 and a second baffle plate 21 fixedly connected to the inner wall of the vessel lid 5. Both the first baffle plate 20 and the second baffle plate 21 have multiple through holes at their upper ends. The through holes on the first baffle plate 20 are misaligned with the through holes at the upper end of the second baffle plate 21.

[0018] In this invention, a motor 16 is fixedly connected to the upper end of the lid 5, and a stirring shaft 4 is fixedly connected to the output shaft of the motor 16. Multiple stirring plates are fixedly connected to the side wall of the stirring shaft 4, which can accelerate the heating of the liquid and prevent sodium lactate precipitation.

[0019] In this invention, a scraper 2 is fixedly connected to the side wall of the stirring shaft 4. The side wall of the scraper 2 has an arc surface, which can prevent materials from sticking inside the distillation vessel 1 and can also speed up the discharge of liquid.

[0020] In this invention, a first insulation sleeve is provided on the side wall of the air outlet pipe 7. The first insulation sleeve can reduce the heat loss of water vapor in the air outlet pipe 7, and prevent water vapor from condensing prematurely on the inner wall of the air outlet pipe 7 due to temperature drop before reaching the cooling mechanism, which would cause pipe blockage or heat waste. This ensures that water vapor enters the cooling mechanism at a stable high temperature, thus guaranteeing condensation efficiency. A second insulation sleeve is provided on the side wall of the cooling box 10. The second insulation sleeve can isolate the cooling box 10 from the heat exchange with the external environment, preventing the external high or low temperature from affecting the temperature of the cooling medium. This ensures that the cooling medium is always in a suitable cooling range, maintains a stable cooling effect, and at the same time reduces cooling energy consumption and improves the energy efficiency of the equipment.

[0021] In this invention, the bottom of the cooling box 10 is provided with an inclined surface, which facilitates the collection of condensate or cooling medium towards the drain pipe 18, preventing water residue from accumulating at the bottom of the box and making it convenient for cleaning and maintenance after the equipment is shut down. Multiple electric heating tubes 17 are installed on the side wall of the cooling box 10. The electric heating tubes 17 enable the cooling box 10 to have both cooling and heating functions. After the equipment is shut down, the water in the box can be heated by the electric heating tubes 17 and converted into high-temperature water for use by external equipment, realizing the reuse of equipment functions, reducing the investment and energy consumption of separate high-temperature water preparation equipment, reducing the overall production cost, and improving the comprehensive utilization rate of the equipment.

[0022] In the initial state, the water inlet pipe and water outlet pipe on the cooling box 10 are connected to the external tap water pipe and the water storage device, respectively. The liquid inlet pipe 12 and liquid outlet pipe 13 on the first heating jacket 3 are connected to the external low-temperature heating oil storage device (with its own oil pump) and the oil storage device (with its own oil pump), respectively. The first heating jacket 3 is filled with heating oil (the heating oil is not an ordinary flammable oil, such as mineral-based high-temperature heat transfer oil, hydrogenated refined mineral heat transfer oil, and synthetic high-temperature heat transfer oil).

[0023] Raw material injection and heating start-up: First, sodium lactate raw material to be dehydrated is injected into the distillation vessel 1 through the feed pipe 14 on the vessel cover 5. The amount of raw material injected is controlled according to the liquid level displayed by the liquid level gauge on the vessel cover 5. After the injection is completed, the valve on the feed pipe 14 is closed. Then, the equipment is started through the control box 15. The temperature controller in the control box 15 sends a working signal to the first heating jacket 3 and the second heating jacket 19. The first heating jacket 3 on the side wall of the distillation vessel 1 starts to heat the raw material liquid in the distillation vessel 1. The second heating jacket 19 on the side wall of the discharge pipe below the distillation vessel 1 starts simultaneously to heat the raw material that may remain in the discharge pipe, preventing the raw material from solidifying and blocking the pipeline due to the low temperature in the discharge pipe. Water vapor generation and interception: As the first heating jacket 3 continues to heat, the temperature of the raw material liquid in the distillation vessel 1 gradually increases. When the temperature reaches the boiling point of water (100℃) (and the liquid temperature in the vessel is subsequently maintained at 100℃), the water in the raw material begins to vaporize and form water vapor, which flows upward in the distillation vessel 1. During this process, the motor 16 at the top of the vessel cover 5 is started by the control box 15. The output shaft of the motor 16 drives the stirring shaft 4 to rotate. Multiple stirring plates on the side wall of the stirring shaft 4 rotate together with it to stir the raw material liquid, so that the raw material is heated evenly, accelerates the vaporization rate of water, and avoids sodium lactate precipitation. The scraper 2 on the side wall of the stirring shaft 4 rotates synchronously. The arc surface of the scraper 2 is in contact with the inner wall of the distillation vessel 1 to scrape the vessel wall in real time, preventing sodium lactate raw material from adhering to the vessel wall. As the water vapor continues to flow upward, it first contacts the first baffle plate 20 on the inner wall of the vessel lid 5. Some of the sodium lactate droplets carried in the water vapor collide with the first baffle plate 20 and adhere to the plate surface, flowing back into the distillation vessel 1 along the plate surface. The water vapor that passes through the through hole of the first baffle plate 20 then contacts the second baffle plate 21. Due to the misalignment of the through holes of the first baffle plate 20 and the second baffle plate 21, the water vapor flow path is further extended, and the remaining entrained droplets are intercepted again by the second baffle plate 21 and flow back, thus achieving effective separation of sodium lactate droplets. Water vapor condensation and collection: After double interception, the pure water vapor continues to flow upwards, entering the common exhaust pipe 7 through multiple exhaust pipes 6 on the lid 5. The first insulation sleeve on the side wall of the exhaust pipe 7 reduces heat loss from the water vapor, ensuring that the water vapor enters the cooling mechanism at a stable temperature. The water vapor flows from the exhaust pipe 7 into the first horizontal pipe 8, and then through multiple flow pipes 9 into the second horizontal pipe 11. At this time, the water injection pipe on the cooling box 10 continuously supplies external cold water, which enters the interior of the cooling box 10 through the water injection pipe, filling the cooling box 10. The 0 comes into contact with the outer wall of the flow pipe 9, carrying away the heat of the water vapor in the flow pipe 9. The water vapor quickly condenses into liquid water in the flow pipe 9. The second insulation sleeve on the side wall of the cooling box 10 isolates the influence of the external temperature, maintains the temperature of the cooling medium stable, and ensures the condensation effect. The condensed liquid water is collected in the second horizontal pipe 11. According to the amount of condensate displayed by the liquid level gauge on the cooling box 10, the valve on the drain pipe 18 at the lower end of the second horizontal pipe 11 is opened in time to discharge and collect the condensate through the drain pipe 18, so as to realize the reuse of water resources. After the equipment finishes dehydration and stops, the valves on the injection pipe 12 and the outlet pipe 13 are opened, allowing the residual hot oil in the first heating jacket 3 to flow into the external oil storage device; at the same time, the oil pump of the low-temperature heating oil storage device is started, allowing the low-temperature heating oil to continuously enter the first heating jacket 3, and the low-temperature heating oil absorbs the heat transferred from the distillation kettle 1, thereby achieving rapid cooling of the sodium lactate in the distillation kettle 1.

[0024] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A primary sodium lactate dehydration device with a cooling structure, comprising a distillation vessel (1), a vessel lid (5), and a control box (15), characterized in that, The distillation vessel (1) is equipped with a first heating jacket (3) on its side wall. A discharge pipe is connected to the bottom of the distillation vessel (1). A second heating jacket (19) is installed on the side wall of the discharge pipe. A feed pipe (14) and multiple exhaust pipes (6) are connected to the vessel lid (5). A gas outlet pipe (7) is connected to the multiple exhaust pipes (6). A cooling mechanism for reducing the liquid temperature is provided on the gas outlet pipe (7). The cooling mechanism includes a first horizontal pipe (8) located below the end of the gas outlet pipe (7) away from the exhaust pipe (6). The lower end of the first horizontal tube (8) is connected to a second horizontal tube (11) through multiple flow tubes (9). The lower end of the second horizontal tube (11) is connected to a drain pipe (18). A cooling box (10) is fixedly connected to multiple flow tubes (9). A water injection pipe and a water outlet pipe are provided on the cooling box (10) and communicate with its interior. A liquid injection pipe (12) and a liquid outlet pipe (13) are provided on the first heating jacket (3) and communicate with its interior. An interception mechanism for intercepting sodium lactate droplets is provided inside the kettle cover (5).

2. The primary sodium lactate dehydration device with a cooling structure according to claim 1, characterized in that, The interception mechanism includes a first baffle plate (20) and a second baffle plate (21) fixedly connected to the inner wall of the vessel lid (5). Both the first baffle plate (20) and the second baffle plate (21) have multiple through holes at their upper ends.

3. The primary sodium lactate dehydration device with a cooling structure according to claim 2, characterized in that, A motor (16) is fixedly connected to the upper end of the lid (5), and a stirring shaft (4) is fixedly connected to the output shaft of the motor (16). Multiple stirring plates are fixedly connected to the side wall of the stirring shaft (4).

4. The primary sodium lactate dehydration device with a cooling structure according to claim 3, characterized in that, The stirring shaft (4) is fixedly connected to a scraper (2) on its side wall, and the scraper (2) has an arc surface on its side wall.

5. A primary sodium lactate dehydration device with a cooling structure according to claim 4, characterized in that, The side wall of the air outlet pipe (7) is fitted with a first heat insulation sleeve, and the side wall of the cooling box (10) is fitted with a second heat insulation sleeve.

6. A primary sodium lactate dehydration device with a cooling structure according to claim 5, characterized in that, The bottom of the cooling box (10) is provided with an inclined surface, and multiple electric heating tubes (17) are installed on the side wall of the cooling box (10).

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