How to avoid or reduce the accumulation of solution crystals on the walls of the crystallization cooler during operation?
Thread Content
How to avoid or reduce the accumulation of solution crystals on the walls of the crystallization cooler during operation?
Crystallization coolers vary, but temperature and flow control are the main considerations. For reference.
Intermittent processes allow the cooling rate to be controlled, reducing the temperature difference between the refrigerant and the wall surfaces, thereby keeping the crystallization process within the metastable region of the system. Increase the wall polishing degree to eliminate the wall buildup caused by local depressions on the wall surface.
Reasonable design: Appropriate design angles, as well as proper operating procedures such as regular cleaning
The crystallizer is a type of continuous crystallizer; it operates as a continuous process, with a vertical shell-and-tube crystallization cooler on each side. How can we reduce the formation of crystals on the heat exchange tubes in these coolers?
How long does it take for heat exchange tubes to develop scale buildup, and will they get clogged? Can continuity increase the heat exchange per stage and reduce the temperature difference at each stage? Is there a difference in the wall-attachment phenomenon between the front and rear coolers? Is it more severe in the first-stage cooler?
Does the external circulation pass through the heat exchanger? You can try increasing the flow rate of the circulation pump, while also paying attention to the liquid level heights in the heat exchanger and the crystallizer.