Abstract
Fouling in heat exchangers is of paramount importance considering its impact on the overall performance of a process plant. Fouling can be controlled by using different methods that affect the deposition rate and/or the removal rate. The use of larger particles (of the order of several millimetres) in fluid bed heat exchangers has been quite successful for heat transfer with severely fouling fluids. In this study, we will investigate the role of much smaller (micron size), non-crystallising particles on crystallisation fouling in a heat exchanger. This will be done by measuring global fouling resistance and pressure drop across the heat exchanger. The smaller particles have been found to be effective in mitigating the crystallisation fouling substantially by lowering the deposition rate and by increasing the removal rate.
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