Separation performance of a new spray-type singlet oxygen generator (SOG), named strongly swirling flow singlet oxygen generator (SSF-SOG), is studied by computational fluid dynamics (CFD) analysis and experiments. The flow field and the separation performance of the SSF-SOG are analyzed using Fluent® soft firstly, and the results show that the separation performance of SSF-SOG is effective for liquid droplets whose diameters are greater than 5μm. Then, using Phase Doppler Particle Analyzer (PDPA), the diameters of liquid droplets in reaction zone and gas outlet of SSF-SOG are measured. The results show that in the reaction zone the diameters of the liquid droplets mainly concentrated on 10μm, and only a little of droplets of which the diameter are under 5μm are detected in the gas outlet of SSF-SOG, which are well consistent with the results of the CFD analysis on SSF-SOG.
High press, gravity-independent, singlet oxygen generator (HGSOG) [1] with small reaction zone and high chemical efficiency was designed and fabricated. The mixing, reaction and separation processes happened simultaneously in the reaction zone of HGSOG. The size and the configuration of reaction zone are very important for HGSOG. In this paper, p-τ value was calculated to determine the upper limit of the volume of reaction zone. The condition of gas-liquid separation was calculated to determine the lower limit of the volume of reaction zone. The utilization rate of Cl2 achieved 90% and the yield of O2(1Δ) reached 70%.
KEYWORDS: Liquids, Oxygen, Chlorine, Chemical oxygen iodine lasers, Chemical lasers, Chemical engineering, Chemical analysis, Structural design, Particles, Atomic, molecular, and optical physics
Singlet oxygen generator (SOG) is the key part of chemical oxygen iodine laser (COIL) which supplies chemical energy for chemical oxygen iodine laser. A novel pre-swirling jet singlet oxygen generator (PJSOG) with rapid separation technology is put forward. In this paper, experimental performances of PJSOG have been studied by means of theoretical and experimental analysis. With excellent phase dispersion and rapid separation performances, PJSOG has several or several decade times specific area than traditional SOGs and high separation efficiency. It can reach more than 95% chlorine utilization and about 60% O2 ( 1Δ) yield. The operating stability has also been studied in this paper. The stable running time of PJSOG increased with liquid flow structure improvement. With high separation efficiency, high O2 ( 1Δ) output coefficient, high utilization coefficient of Cl2 and excellent operating stability, the novel PJSOG must be a promising technology in further research.
The paper describes the theoretical and experimental analysis of centrifugal flow singlet oxygen generator in order to
identify the optimal conditions needed to satisfy the COIL requirement. The optimal conditions had been analyzed under
Cl2 flow rate, reaction length and generator pressure. The performance was achieved Cl2 utilization of 94% and O2(1Δ)
yield of 72%.
Singlet oxygen generator is the key of chemical oxygen-iodine laser (COIL) which supplies energy for the system.
However, the traditional generators have some drawbacks just as the bigger volume and the lower chemical efficiency.
Specific surface area is the important factor restricting the development of singlet oxygen generator. Many researches on
increasing specific surface area have been done to improve the performance of singlet oxygen generator. A new type
eject singlet oxygen generator was introduced in this paper. Ejector was used in gas-liquid reaction. Liquid ejected
through the nozzle with high velocity droved by high pressure, and gas ejected into mixing chamber along the tangent of
nozzle. Gas and liquid were broken into many small droplets. Gas and liquid reacted in reaction chamber, then the
mixture ejected into separator with very high speed. These droplets can produce mount of gas-liquid interface and
increase the chemical efficiency of generator. Many numerical simulations have been done on the new type generator
According to the simulations, eject singlet oxygen generator is feasible and has prospect. Therefore ejector may be a
better type of singlet oxygen generator.
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