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Jet O2(1Δ) generator with oxygen pressures up to 13.3 kPa

The output parameters of a jet-type singlet oxygen generator were investigated. An increase in the jet and gas flow velocities through a reactor to 20 and 30 m s-1, respectively, made it possible to generate O2 at pressures up to 13.3 kPa and with the O2(1Δ) fraction of about 60%. The power density of the electron energy coupled out across the generator cross section was 0.77 kW cm-2, which was over one order of magnitude higher than the corresponding power density obtained for other types of singlet oxygen generator. The high efficiency was due to the large specific area of the contact between the phases as a result of breakup of the jets and due to a fast rate of mass transfer in the liquid phase (exceeding the diffusion rate). The capture of the gas by the jets had to be allowed for in the calculations.