Impinging Evaporator Hood Design with Pulsed Air, 2003 Spring Technical Conference Proceedings
Paper manufacturing plants now use two drying technologies, impingement heating from air jets, and conduction heating from steam cylinders. Pulse air drying (PAD) improves the existing impingement system by increasing the heat transfer rate. Typical M.G. or Yankee style paper machines could see a 20% production increase by retrofitting this technology. However, past studies and pilot plants have suffered from unpredictable performance, and two main problems still exist. First, pulse drying doesn’t have the complete theoretical foundation that steady flow
drying has, and secondly, the PAD process requires a pulse burner with significantly different performance characteristics than the pulse burners now used in other industries. The author will provide an overview of existing
technologies, an appraisal of the remaining technical hurtles, and estimates of technology’s economic viability, energy savings, maintenance requirements, and emissions impact.
Impinging Evaporator Hood Design with Pulsed Air, 2003 Spring Technical Conference Proceedings
