👉 A leaving fluid, also known as a residual fluid, is a component that remains in a system after a phase change or chemical reaction has occurred, leaving behind a liquid or solid that does not fully equilibrate with the original phase. In processes like distillation, extraction, or crystallization, this fluid often has properties different from the pure components due to incomplete removal of impurities or solvents. It can be a mixture of various substances, including dissolved solids, gases, or other compounds that were not fully removed during the process. The presence of leaving fluids can affect the efficiency and purity of subsequent operations, necessitating their removal or treatment to ensure optimal system performance.
