The circulation of steam is forced by a powerful fan inside the retort which makes travelling steam horizontally and evenly to guarantee a perfect temperature homogeneity and temperature distribution. The steam flow speed is about 20m/second. Moreover, steam is a gas, so no physical barrier can appear and all point of product surfaces are always reached.
1.Thanks to its fan system, the steam-air retort doesn't need to drive air by steam any more as the fan rotation can break the cold air and force steam to travel parallelly with trays. Thus steam can circulate horizontally and evenly in retort to guarantee faster heat penetration and more uniform sterilization effect.
2. As there is no preheating during sterilization processthus it saves the start the time and greatly reduces the cycle time of sterilization.
3.As no need of process water for heating and sterilization and no need of steam to heat the process water so it can greatly save steam and water.
4.The fan in retort forces the steam traveling from one end of the tank to the other endso it can perfectly reach all the products and always keep the steam evenly circulate in reto to ensure good sterilization effect without cold point.
5.The steam & air retort is more flexible and accurate in pressure and temperature controland it can adopt counter pressure for cooling; so its application is broader and is applicable to flexible packagingbottles canshigh temperaature resistant plastic as well alumnium packaging.
Process Flow Diagram