Operating Principle:

Kaida Evaporation and Crystallization Co., Ltd. developed and produced central circulating tube evaporator.TheirThe structure and heating chamber are composed of a vertical bundle of heating pipes (boiling pipe bundle), with a larger diameter pipe in the center, known as the central circulation pipe, which typically accounts for 40~100% of the total cross-sectional area of the heating pipe bundle.

During operation, when the heating medium is introduced between the tubes for heating, due to the greater heating surface area per unit volume of liquid within the heating tubes compared to that in the central circulation tube, the relative density of the liquid within the heating tubes is lower. This results in a density difference between the liquid in the heating tubes and that in the central circulation tube. This density difference causes the solution to naturally circulate, descending from the central circulation tube and ascending through the heating tubes.

Due to the circulation speed of the solution depending on the density difference generated by the solution and the length of the tube, the greater the density difference and the longer the tube, the faster the solution's circulation speed. However, due to the total height restriction of this type of evaporator, the heating tube length is shorter, typically 1~2m, with a diameter of 25~75mm and a length-to-diameter ratio of XX~XX. For detailed technical specifications, please call the consultation hotline.

Product Features:

1.Materials form an internal circulation due to their density differences, requiring no external power and resulting in low energy consumption and fixed investment.

2.By configuring longer heat exchange tubes, a higher circulation speed can be achieved, enhancing heat transfer efficiency.

3.Heat exchanger tubes operate in an immersed state and are short tubes, suitable for vaporization scenarios where crystallization occurs.

4.Wide application, suitable for the majority of evaporation scenarios.

5.Compact structure, low installation height, small footprint.

Main Types: Single-effect Central Recirculating Evaporators, Multi-effect Central Recirculating Evaporators,

Application Scope:

1.For moderate viscosity, non-scaling evaporation applications.

2.High-viscosity materials require the installation of an internal agitator during concentration to aid in their circulation.

3.Almost covers all evaporation operations required for concentration, crystallization, or materials that are difficult to scale.

4.Especially suitable for small evaporation rates up to 5t/h.