INFLUENCE OF FINS ON FORMALDEHYDE REMOVAL PERFORMANCE OF ANNULAR PHOTOCATALYTIC REACFORS

摘要

The influence of fins on formaldehyde removal performance of annular photocatalytic reactors was theoretically,numerically and experimentally studied. The simulated and the experimental results agree well. It is found that the bottleneck of formaldehyde removal of conventional annular photocatalytic oxidation (PCO) reactors tends to be mass transfer. For a PCO reactor, after applying fins coated with titania, the reaction area can be greatly enlarged and the convective mass transfer can be obviously enhanced, although the reaction coefficient may be reduced. On the whole, the formaldehyde removal performance of an annular PCO reactor may be obviously improved by using fins in the reactor. The analysis is helpful for annular PCO reactor design, and performance optimization.