1. Risk of crystallization: When the concentration of the LiBr solution is too high or the temperature is too low, crystals may occur. These crystals can block pipes (especially narrow passages such as the solution heat exchanger and absorber), causing the solution circulation to stop, rendering the unit inoperable, and potentially damaging the equipment.

2. How the de-crystallization tube works: The de-crystallization tube is a bypass line typically connected between the generator and the absorber (or the solution pump inlet). When crystallization causes a blockage:

The high-temperature, low-concentration solution inside the generator (heated by a high-temperature heat source) flows directly through the de-crystallization tube, bypassing the blocked area and entering the absorber.

This high-temperature solution rapidly raises the temperature in the blocked area, causing the precipitated LiBr crystals to melt, thereby clearing the pipeline.

3. Key Functions:

Passive Self-Rescue: No shutdown or disassembly is required; crystallization is eliminated online using the system’s own heat, restoring operation.

Prevention of Cascading Damage: Avoids issues such as solution pump dry running, heat exchanger tube rupture, or abnormal pressure spikes caused by crystallization.

Simplified Operation: Compared to traditional heating bands or external heating methods for crystal melting, the de-crystallization tube offers a more direct and efficient solution.