| 摘要 |
This method achieves spray drying by injection super heated slurry type material counter currently into a duct delivering preheated drying gas. Drying gas velocity is above flooding velocity, and the feed spray is delivered by a variable-flow nozzle valve which maintains constant kinetic energy per unit mass of spray over its flow range. Spray cone angle is also adjusted over the same flow range. Conventional facilities are used for heating drying gas and for collecting dried solids.
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