Crystal Growth Tanks for Freeze Concentration

Abstract

The invention relates to a crystal growth tank used for freezing and concentration. The crystal growth tank comprises a barrel-shaped crystal tank body and a growth tank body, wherein a feeding hole is formed in the bottom of the crystal tank body; a cold medium water inlet located at the bottom end of the crystal tank body and a cold medium water outlet located at the top end of the crystal tank body are formed in the two symmetrical side edges of the crystal tank body; the crystal tank body is located on the lower side of the growth tank body, and the crystal tank body and the growth tank body are connected to form a communicated whole body, and a rotary shaft penetrates through the centers of the crystal tank body and the growth tank body; and the rotary shaft is rotationally and fixedly sealed between the top of the growth tank body and the bottom of the crystal tank body through sealing bearings at the two ends. A rotary shaft section in a material barrel of the crystal tank body, namely a scraping knife shaft, is movably connected with mutually-staggered scraping knives; a rotary shaft section in the growth tank body, namely a stirring shaft, is fixedly provided with hollow annular stirrers which are uniformly distributed; and the part, which is close to the center of the top, of the growth tank body is further provided with an ice discharging hole in a manner of extending out of the tank. The crystal growth tank is simple in structure, low in energy consumption and stable to operate, and can effectively guarantee the concentration effect.

Description

technical field [0001] The invention belongs to the technical field of freeze concentration, and in particular relates to a crystal growth tank used for freeze concentration. Background technique [0002] Human beings have a long history of research on freeze concentration technology. Freeze concentration is to use the principle of solid-liquid phase equilibrium between solid ice crystals and aqueous solution to achieve concentration. It is to lower the temperature of the solution below the freezing point of the solution, so that the solvent water in the solution freezes into ice crystals, and the ice crystals are separated, thereby reducing The content of solvent water in the solution increases the concentration of the solution and concentrates it. Freeze concentration mainly includes the following three steps: crystallization, recrystallization, and separation. Crystallization means to make the water in the solution form ice crystals, recrystallization means to make the ...

AI Technical Summary

Problems solved by technology

[0003] The freeze concentration system in the prior art is composed of three processes of ice crystal formation, growth, and ice crystal separation. The operation of the whole system is relatively complicated. It is relatively difficult to effectively control the three processes, and the investment and operation cost are high.

On the one hand, it leads to high equipment costs. On the other hand, due to many procedures, the risk of operational contamination is inevitably increased in the early production process, which is extremely unfavorable to the concentration of products, especially sterilized fruit and vegetable juices.

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