Development of an energy-efficient continuous conduction parboiling process

A continuous conduction parboiling unit using industrial oil as an indirect heat transfer medium was designed and developed. The optimum parboiling conditions like initial moisture content (IMC) and contact time for three varieties of paddy (ADT 36, IR 20 and CO 45) were determined, including the energy required for soaking, parboiling and drying of paddy. Conduction parboiling needed only 49 to 59 percent of the heat utilized in conventional process depending on variety.