A new type separator with a square cross-section, downward exhaust gas and water-cooling is described in this paper. Based on its optimization of structure and the measurements of three-dimensional velocity, the k-e mathematical model was used tocalculate the features of the gas flow in this separator. The analytical results compared well with the experimental data. On the basement of the analysis of its flow field, the author gets the conclusion that the bump back and the centrifugal separationare the main factors influencing the efficiency. Also, the critical way to improve the efficiency of this separator is proposed.
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