Cooling device for replacing circulating water with sodium erythorbate mother liquor

Abstract

The utility model relates to a cooling device using sodium erythorbate mother liquor to replace circulating water, which comprises a secondary mother liquor tank, a neutralizing tank and a condenser, an outlet of the secondary mother liquor tank is connected with the neutralizing tank through a pipeline, an outlet at the lower end of the neutralizing tank is connected with a water inlet of the condenser through a circulating pipeline, and a centrifugal pump is arranged on the circulating pipeline. A water outlet of the condenser is connected with the neutralizing tank through a circulating pipeline, a material return branch pipe is connected to the circulating pipeline between the condenser and the neutralizing tank, and an automatic valve is arranged on the material return branch pipe; the secondary mother liquor tank serves as a primary settling tank, supernate overflows to the neutralizing tank after the liquid level exceeds 5 meters, mother liquor in the neutralizing tank enters the condenser through the centrifugal pump to circulate and serves as a refrigerant of the condenser to continuously cool flash evaporation, and the secondary mother liquor serving as the refrigerant can avoid consumption of a large amount of circulating water and ethylene glycol. And energy conservation and production cost control are facilitated.

Description

Technical Field

[0001] The utility model relates to the field of preservative production and processing, in particular to a cooling device for replacing circulating water with sodium isoascorbate mother liquor. Background Art

[0002] Sodium erythorbate, chemically known as sodium L-ascorbate, is a form of vitamin C. Sodium erythorbate is easily absorbed and utilized by the human body and can be supplemented orally or by injection for the prevention and treatment of vitamin C deficiency and other related diseases.

[0003] Flash cooling technology is required in the production process of sodium isoascorbate. During the flash cooling process, the refrigerant is heated to a high temperature state, and then the pressure is quickly reduced through a flash evaporator or a flash valve, so that the refrigerant evaporates into gas instantly. During the evaporation process, the refrigerant absorbs heat from the surrounding environment to achieve cooling. In the current production process, the refrigerant used for flash cooling is usually circulating water and ethylene glycol. In order to achieve continuous flash cooling, a large amount of circulating water and ethylene glycol are consumed every day, which has high energy consumption and is not conducive to controlling production costs. Utility Model Content

[0004] In order to solve the above problems, the utility model proposes a cooling device using sodium isoascorbate mother liquor instead of circulating water.

[0005] The technical solution of the utility model is:

[0006] A cooling device for replacing circulating water with sodium isoascorbate mother liquor comprises a secondary mother liquor tank, a neutralization tank and a condenser. The outlet of the secondary mother liquor tank is connected to the neutralization tank through a pipeline. The height of the secondary mother liquor tank is greater than that of the neutralization tank. The outlet at the lower end of the neutralization tank and the water inlet of the condenser are connected through a circulation pipeline. A filter is provided on the circulation pipeline. A centrifugal pump is provided on the circulation pipeline. The water outlet of the condenser is connected to the neutralization tank through the circulation pipeline. A return branch pipe is connected to the circulation pipeline between the condenser and the neutralization tank. An automatic valve is provided on the return branch pipe. A solenoid valve B is provided on the circulation pipeline between the return branch pipe and the condenser. Stop valves are provided on the circulation pipelines at the outlet and the inlet of the condenser.

[0007] Preferably, the outlet of the secondary mother liquid tank is arranged at the upper end, and the outlet is an overflow port, and the overflow port is connected to the upper end of the neutralization tank through an overflow pipe. The lower end of the secondary mother liquid tank is provided with a sedimentation material discharge pipe, and a valve is provided on the discharge pipe.

[0008] Preferably, a liquid level meter is installed on the side wall of the neutralization tank.

[0009] Preferably, the liquid level meter is provided with a liquid level monitor, and the liquid level monitor and the controller of the automatic valve are connected via a signal line to achieve interlocking control of the liquid level meter and the automatic valve.

[0010] Preferably, a flexible pipe is provided at the connection between the circulation pipeline and the neutralization tank.

[0011] Preferably, a mother liquor agitator is installed in the secondary mother liquor tank, and a neutralization liquid agitator is installed in the neutralization tank. The agitators both include a vertically installed stirring paddle, and a motor is installed on the upper part of the tank body to drive the stirring paddle to rotate.

[0012] Preferably, a Y-shaped filter is provided on the circulation pipeline at the inlet of the centrifugal pump.

[0013] The beneficial technical effects of the utility model are:

[0014] (1) The utility model uses the secondary mother liquor tank as a primary sedimentation tank. When the liquid level exceeds 5 meters, the supernatant overflows into the neutralization tank. The mother liquor in the neutralization tank is circulated into the condenser through a centrifugal pump and used as the refrigerant of the condenser to continuously cool the flash evaporation. This method of using the secondary mother liquor as a refrigerant can avoid consuming a large amount of circulating water and ethylene glycol, which is beneficial to saving energy and controlling production costs.

[0015] (2) In the process of circulating the mother liquid in the neutralization tank of the utility model as the refrigerant of the condenser, the return branch pipe transports the secondary busbar to the synthesis workshop for the synthesis process. The two processes do not interfere with each other, ensuring the normal production of synthesis while achieving the circulation cooling of the condenser, which is beneficial to improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the system structure of the utility model.

[0017] In the figure, 01. secondary mother liquor tank, 11. overflow pipe, 12. mother liquor agitator, 13. sedimentation material discharge pipe, 02. neutralization tank, 21. liquid level meter, 22. neutralization liquid agitator, 23. signal line, 03. condenser, 04. circulation pipeline, 41. centrifugal pump, 42. return branch pipe, 43. automatic valve, 44. flexible pipe, 45. Y-shaped filter, 51. existing circulating water inlet pipe, 52. existing circulating water outlet pipe. DETAILED DESCRIPTION

[0018] Embodiment 1, as Figure 1As shown, a cooling device for replacing circulating water with mother liquor of sodium isoascorbate comprises a secondary mother liquor tank 01, a neutralization tank 02 and a condenser 03, wherein the outlet of the secondary mother liquor tank 01 is connected to the neutralization tank 02 through a pipeline, and the outlet at the lower end of the neutralization tank 02 and the water inlet of the condenser 03 are connected through a circulation pipeline 04, and a centrifugal pump 41 is provided on the circulation pipeline 04, and the suction force generated by the centrifugal pump 41 transports the mother liquor in the neutralization tank 02 into the circulation pipeline 04, and transports it from the circulation pipeline 04 to the condenser 03, as a refrigerant for the condenser 03, the water outlet of the condenser 03 is connected to the neutralization tank 02 through the circulation pipeline 04, and a return branch pipe 42 is connected to the circulation pipeline 04 between the condenser 03 and the neutralization tank 02, and the return branch pipe 42 is provided with an automatic valve 43, and after the automatic valve 43 is opened, the mother liquor in the neutralization tank 02 enters the return branch pipe 42 to carry out the synthesis process.

[0019] In this embodiment, the outlet of the secondary mother liquor tank 01 is arranged at the upper end, and the outlet is an overflow port. The overflow port is connected to the upper end of the neutralization tank 02 through the overflow pipe 11. The temperature of the secondary mother liquor is relatively low, between 25°C and 30°C. After natural sedimentation, the supernatant flows from the overflow pipe into the neutralization tank 02, and a sedimentation material discharge pipe 13 is connected to the lower end of the secondary mother liquor tank 01.

[0020] In this embodiment, a mother liquid agitator 12 is installed in the secondary mother liquid tank 01, and a neutralizing liquid agitator 22 is installed in the neutralizing tank 02. A flexible tube 44 is provided at the connection between the circulation pipeline 04 and the neutralizing tank 02. During the mixing and stirring process of the neutralizing tank 02, the tank body will vibrate, and the flexible tube 44 is used to buffer the vibration force to prevent the vibration force from damaging the circulation pipeline 04.

[0021] In this embodiment, a Y-shaped filter 45 is provided on the circulation pipe 04 at the inlet of the centrifugal pump 41 , through which impurities in the mother liquid are filtered out to prevent the impurities from entering the centrifugal pump 41 .

[0022] The use process of the device is as follows: the secondary mother liquor naturally settles in the secondary mother liquor tank 01, and when the liquid level of the supernatant exceeds 5 meters, it overflows from the overflow pipe into the neutralization tank 02, and the centrifugal pump 41 is started to transport the mother liquor from the circulation pipeline 04 into the condenser 03. After passing through the condenser 03, it returns to the neutralization tank 02 and serves as the refrigerant of the condenser 03 to continuously cool the flash evaporation. There is no need to use circulating water and ethylene glycol as refrigerants. During this process, the automatic valve 43 on the return branch pipe 42 is opened, and the mother liquor is simultaneously transported from the return branch pipe 42 to the synthesis workshop and enters the synthesis process. The two processes do not interfere with each other, ensuring the normal production of synthesis while realizing the circulation cooling of the condenser 03, thereby improving the efficiency of continuous production.

[0023] Embodiment 2, as Figure 1As shown, on the basis of Example 1, a liquid level meter 21 is installed on the side wall of the neutralization tank, and the liquid level in the neutralization tank 02 is observed by the liquid level meter 21. A liquid level monitor is provided on the liquid level meter 21, and the liquid level monitor and the controller of the automatic valve 43 are connected by a signal line 23 to realize interlocking control of the liquid level meter 21 and the automatic valve 43. When the liquid level in the neutralization tank 02 is detected to be low, the automatic valve 43 automatically reduces the flow rate. When the liquid level in the neutralization tank 02 is detected to be high, the automatic valve 43 automatically increases the flow rate, thereby realizing interlocking automatic control of the liquid level in the neutralization tank 02 and the mother liquor delivery flow rate, without manual intervention, thus avoiding manual operation errors.

Claims

1. A sodium isoascorbate mother liquor replacing a circulating water cooling device, characterized in that: It includes a secondary mother liquid tank, a neutralization tank and a condenser. The outlet of the secondary mother liquid tank is connected to the neutralization tank through a pipeline. The outlet at the lower end of the neutralization tank and the water inlet of the condenser are connected through a circulation pipeline. A centrifugal pump is provided on the circulation pipeline. The water outlet of the condenser is connected to the neutralization tank through a circulation pipeline. A return branch pipe is connected to the circulation pipeline between the condenser and the neutralization tank. An automatic valve is provided on the return branch pipe.

2. A sodium isoascorbate mother liquor according to claim 1 replaces the circulating water cooling device, characterized in that: The outlet of the secondary mother liquid tank is arranged at the upper end, and the outlet is an overflow port, and the overflow port is connected to the upper end of the neutralization tank through an overflow pipe.

3. A sodium isoascorbate mother liquor according to claim 1 replaces the circulating water cooling device, characterized in that: A liquid level gauge is installed on the side wall of the neutralization tank.

4. A sodium isoascorbate mother liquor according to claim 3 replaces the circulating water cooling device, characterized in that: The liquid level meter is provided with a liquid level monitor, and the liquid level monitor and the controller of the automatic valve are connected via a signal line to realize interlocking control of the liquid level meter and the automatic valve.

5. A sodium isoascorbate mother liquor according to claim 1 replacing a circulating water cooling device, characterized in that: A flexible pipe is provided at the connection between the circulation pipeline and the neutralization tank.

6. A sodium isoascorbate mother liquor according to claim 1 replacing a circulating water cooling device, characterized in that: A mother liquor agitator is installed in the secondary mother liquor tank, and a neutralization liquid agitator is installed in the neutralization tank.

7. A sodium isoascorbate mother liquor according to claim 1 replacing a circulating water cooling device, characterized in that: A Y-shaped filter is arranged on the circulation pipeline at the inlet of the centrifugal pump.

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