Pre-crystallization device of sugar boiling tank

Abstract

The utility model relates to the technical field of sugar manufacturing equipment, and discloses a pre-crystallization device of a sugar boiling tank, which comprises a thick arabinose tank, the sugar boiling tank, a vacuum pump, a plate heat exchanger, a horizontal crystallizer and a controller, the thick arabinose tank is connected with the sugar boiling tank through a feeding pipeline, and the feeding pipeline comprises two branches, the branch I is provided with a small feeding valve I, the branch II is provided with a large feeding valve II, the sugar boiling tank is provided with a vacuumizing pipeline which is connected with the vacuum pump, a heat exchange tube bundle is arranged in the sugar boiling tank, and the lower end of the sugar boiling tank is provided with a discharging pipeline I which is communicated with the horizontal crystallizer. The temperature, the pressure, the liquid level and the vacuum degree are controlled and adjusted by a controller, psicose crystals are grown and grown through a sugar boiling tank, and then the psicose crystals are produced through a horizontal crystallizer; various process parameters can be more accurately controlled by adopting an automatic sugar boiling technology, the production period is shortened, the production consumption is reduced, the labor force is reduced by controlling the vacuum degree, and the production efficiency is greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of sugar production equipment technology, specifically to a pre-crystallization device for a sugar boiling tank. Background Technology

[0002] Sugar boiling is a crucial step in the allulose crystal production process. Its main task is to concentrate the allulose solution to a certain supersaturation level in a boiling tank, precipitating sucrose crystals that meet the requirements and allowing them to grow larger, resulting in a high-quality sugar paste. Afterward, the paste is cooled and crystallized in a horizontal crystallizer, and the mother liquor is discharged using a centrifuge, yielding high-quality allulose crystals. In the early stages of my country's sugar industry, manual operation based on experience was essential. Human factors significantly impacted the quality of allulose crystals; even under the same conditions, the quality of the sugar produced by operators with varying levels of skill differed. Low concentrations could result in allulose crystals that were too small, leading to excessively thin crystals during the crystallization process, failing to reach the specified mesh size. With continuous advancements in technology, designing an automated pre-crystallization device with automated parameter control and high production efficiency has become an inevitable trend. Utility Model Content

[0003] In response to the shortcomings of current production technology, this utility model provides a highly automated pre-crystallization device for a sugar boiling tank, which can effectively control various parameters of the sugar boiling and crystallization process, shorten the allulose concentration time, and improve the allulose crystallization efficiency.

[0004] To achieve the above-mentioned objectives, the technical solution adopted by this utility model is as follows:

[0005] A pre-crystallization device for a sugar boiling tank includes a concentrated sugar tank, a sugar boiling tank, a vacuum pump, a plate heat exchanger, a horizontal crystallizer, and a controller. The outlet of the concentrated sugar tank is connected to the inlet of the sugar boiling tank via an inlet pipeline. The inlet pipeline includes two branches: branch I with a small inlet valve I and branch II with a large inlet valve II. Branch I is connected to a pure water storage tank via a three-way valve and a pipe III. The sugar boiling tank is equipped with a vacuum pump pipeline, which passes through the plate heat exchanger for cooling. A heat exchange tube bundle is installed inside the sugar boiling tank, with an inlet at one end connected to a steam pipeline and an outlet at the other end connected to a steam condensate tank. The sugar boiling tank is also equipped with a seed crystal addition pipeline. The lower end of the sugar boiling tank is connected to the horizontal crystallizer via outlet pipeline I. A vacuum pressure sensor, a concentration sensor, a liquid level sensor, and a temperature sensor are installed inside the sugar boiling tank and connected to the controller.

[0006] The steam pipeline is equipped with an adjustable valve III, and the seed crystal addition pipeline is equipped with a valve IV.

[0007] The discharge pipeline I is equipped with valve V. Valves I, II, III, IV and V are all connected to the controller.

[0008] The feed pipeline is also equipped with a three-way connection to the mother liquor tank, and the lower end of the sugar boiling tank is equipped with a discharge pipeline II connected to the mother liquor tank.

[0009] The sugar boiling tank is equipped with stirring blades, and its drive motor is connected to the controller.

[0010] Pipeline III is equipped with valve VI, which is connected to the controller.

[0011] The working principle of this utility model is as follows: the liquid material in the concentrated sugar tank enters the sugar boiling tank through the small feed valve I and the large feed valve II. The vacuum degree in the sugar boiling tank is adjusted by three vacuum pumps. The temperature in the sugar boiling tank is adjusted by controlling the steam pipeline valve III and the heat exchange tube bundle. After the concentration of the liquid material in the sugar boiling tank reaches the set value, the discharge valve V is opened and the liquid material enters the horizontal crystallizer. During the entire pre-crystallization process, the temperature, pressure, liquid level, vacuum degree and sugar concentration are collected by sensors and controlled by the controller.

[0012] The beneficial effects of this invention are as follows: Compared with traditional sugar boiling methods, this invention allows for precise control. Key parameters such as temperature, sugar concentration, pressure, and vacuum level are monitored in real time by various sensors, facilitating controller adjustments and avoiding quality fluctuations caused by human experience bias. This automated equipment can operate continuously for 24 hours, reducing downtime associated with traditional manual, phased operations and significantly increasing production capacity. The use of a vacuum pump lowers the boiling point, accelerating water evaporation from the sugar tank and shortening the concentration time of the allolone sugar solution. It also reduces reliance on manual labor and operational risks, as the automated system replaces repetitive tasks such as manual stirring, temperature measurement, and material feeding, reducing dependence on skilled workers and lowering labor costs. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model.

[0014] 1-Sugar concentrate tank, 2-Sugar boiling tank, 3-Vacuum pump, 4-Plate heat exchanger, 5-Horizontal crystallizer, 6-Pure water storage tank, 7-Mother liquor tank, 8-Steam condensate tank, 9-Valve I, 10-Valve II, 11-Branch I, 12-Branch II, 13-Pipeline III, 14-Vacuuming pipeline, 15-Steam pipeline, 16-Seed crystal addition pipeline, 17-Discharge pipeline I, 18-Discharge pipeline II, 23-Valve III, 24-Valve IV, 25-Valve V, 26-Valve VI. Detailed Implementation

[0015] The following is in conjunction with the appendix Figure 1 The technical solution of this utility model is described in detail below:

[0016] A pre-crystallization device for a sugar boiling tank 2 includes a concentrated sugar tank 1, a sugar boiling tank 2, a vacuum pump, a plate heat exchanger 4, a horizontal crystallizer 5, and a controller. The outlet of the concentrated sugar tank 1 is connected to the inlet of the sugar boiling tank 2 via a feed pipeline. The feed pipeline includes two branches: branch I11 equipped with a small feed valve I9 ​​and branch II12 equipped with a large feed valve II10. Branch I11 is equipped with a tee and connected to a pure water storage tank 6 via a pipeline III13. The sugar boiling tank 2 is equipped with a vacuum pipeline. 14 is connected to vacuum pump 3. The vacuum line 14 passes through plate heat exchanger 4 for cooling. The sugar boiling tank 2 is equipped with heat exchange tube bundle. One end of the tube bundle is connected to steam line 15, and the other end is connected to steam condensate tank 8. The sugar boiling tank 2 is also equipped with seed crystal addition line 16. The lower end of the sugar boiling tank 2 is equipped with discharge line I 17 connected to horizontal crystallizer 5. The sugar boiling tank 2 is equipped with vacuum pressure sensor, concentration sensor, liquid level sensor, temperature sensor and controller.

[0017] The steam pipeline 15 is equipped with an adjustable valve III 23, and the seed crystal pipeline 16 is equipped with a valve IV 24.

[0018] The discharge pipeline I17 is equipped with valve V25. Valves I9, II10, III23, IV24, and V25 are all connected to the controller.

[0019] The feed pipeline is also equipped with a three-way connection to the mother liquor tank 7, and the lower end of the sugar boiling tank 2 is equipped with a discharge pipeline II18 connected to the mother liquor tank 7.

[0020] The sugar boiling tank 2 is equipped with stirring blades, and its drive motor is connected to the controller; the heat exchange pipeline of the plate heat exchanger 4 is connected to a circulating cold water source.

[0021] The pipeline Ⅲ13 is equipped with valve Ⅵ26 for regulating the sugar solution concentration, which is connected to the controller.

[0022] The syrup in the concentrated sugar tank 1 enters the boiling tank 2 through the small feed valve I9 ​​and the large feed valve II10. The vacuum level in the boiling tank 2 is adjusted by three vacuum pumps. The temperature in the boiling tank 2 is adjusted by controlling the steam pipeline 15, valve III23, and heat exchange tube bundle. After the concentration of the syrup in the boiling tank 2 reaches the set value, the parameter is set to 85.5%. The discharge valve V25 is opened, and the syrup enters the horizontal crystallizer 5. During the entire pre-crystallization process, the temperature, liquid level, vacuum level, and sugar concentration are collected by sensors and controlled by the controller.

[0023] Based on actual operation, calculations show that after the implementation of this utility model technical solution, a single sugar boiling tank in the sugar-making workshop can produce 25 tons of allulose per day, greatly improving production efficiency.

[0024] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements can be made without departing from the principle of the present utility model. These improvements should also be considered within the scope of protection of the present utility model without creative effort.

Claims

1. A pre-crystallization apparatus for a sugar cook, characterized by: The application relates to a concentrated glucose tank, a sugar boiling tank, a vacuum pump, a plate heat exchanger, a horizontal crystallizer and a controller, wherein the discharge port of the concentrated glucose tank is connected with the feeding port of the sugar boiling tank through a feeding pipeline, the feeding pipeline comprises two branches, a branch I provided with a small feeding valve I and a branch II provided with a large feeding valve II, the sugar boiling tank is provided with a vacuum pumping pipeline connected with the vacuum pump, the vacuum pumping pipeline passes through the plate heat exchanger for cooling, the sugar boiling tank is provided with heat exchange pipe bundles, one end of the heat exchange pipe bundles is provided with an inlet connected with a steam pipeline, the other end of the heat exchange pipe bundles is provided with an outlet connected with a steam condensate tank, the sugar boiling tank is further provided with a crystal seed adding pipeline, the lower end of the sugar boiling tank is provided with a discharge pipeline I connected with the horizontal crystallizer, and the sugar boiling tank is provided with a vacuum pressure sensor, a concentration sensor, a liquid level sensor and a temperature sensor connected with the controller.

2. The sugar kier pre-crystallization apparatus of claim 1, wherein: The branch I is connected with a pure water storage tank through a pipeline III.

3. The sugar kier pre-crystallization apparatus of claim 1, wherein: The steam pipeline is provided with an adjustable valve III, the crystal seed adding pipeline is provided with a valve IV, the discharge pipeline I is provided with a valve V, and the valves I, II, III, IV and V are connected with the controller.

4. The sugar kier pre-crystallization apparatus of claim 1, wherein: The feeding pipeline is further provided with a three-way joint connected with a mother liquor tank, and the lower end of the sugar boiling tank is provided with a discharge pipeline II connected with the mother liquor tank.

5. The sugar kier pre-crystallization apparatus of claim 1, wherein: The sugar boiling tank is provided with stirring blades, and the driving motor of the stirring blades is connected with the controller.

6. The sugar kier pre-crystallization apparatus of claim 2, wherein: The pipeline III is provided with a valve VI connected with the controller.

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