Ozonization of Oxygen by the Low Pressure Mercury Vapor Quartz Lamp (1)

The Relation between the Width of Annular Space and the Concentration of Ozone Produced

Abstract

Ozone production capacity of low pressure mercury vapor quartz lamps was measured in order to design industrial equipments for photo oxidation processes.
The lamps used in the experiments were made from two kinds of conventional and synthetic quartz tubes. A main spectral line is 253.7nm in cylinder shaped 8W lamps. Supplying air and oxygen into an annular space of a double pipe structure, author examined the relation between the concentration of ozone produced and gas flow rate (0.025-15l/min). In the measurment the width of the annular space was changed, keeping the length of the pipe constant.
The ozone concentration increased with gas flow rate in the low rate range. However, it became in inverse proportion in the range of high gas flow rate. That is, a reversing zone of concentration was found in the experiments.
Here, author obtained the relative formula between supplied gas quantity and the concentration of ozone produced.