Research on atomized droplet size in composite quench chamber

E-ISSN： 1939-019x|93|12|2150-2156

ISSN： 0008-4034

Source： THE CANADIAN JOURNAL OF CHEMICAL ENGINEERING, Vol.93, Iss.12, 2015-12, pp. : 2150-2156

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Abstract

A cold state device of a composite spray quench chamber was established. In order to obtain the distribution of atomized droplet sizes at radial and axial positions along the flow field, different combinations of multi‐spray nozzles were selected. The atomized droplet size along the axial position was measured using a Malvern Spraytec under different conditions. The results showed that Sauter Mean Diameter (SMD) D32 near the nozzles was mainly influenced by liquid flow rate. However, D32 further away from the nozzles was affected by both liquid and gas flow rate. Along the axial direction, with increasing of the relative height (h/H), D32 decreased. D32 around the gas outlet was mainly affected by the gas flow rate, growing from 80 to 160 µm as the gas flow rate increased from 0.29 to 0.49 m · s−1, which was similar to the calculated data. The research can optimize and improve the internal structure of a spray quench chamber, providing guidance to industrial applications.