Application of factorial design to optimize parameter of cut tobacco drying

Using factorial design,the effect of annular cylinder dryer process parameter on the quality inde-xes of cut tobacco was investigated.The results showed that process parameters of cut tobacco drying have different effects on quality indexes of cut tobacco.Standard deviation of moisture mainly affected by hot-moisture exhaust opening;standard deviation of temperature mainly affected by hot air temperature and hot air moisture exhaust opening;fill value mainly affected by cylinder wall temperature;structure mainly affected by HT steam pressure.Cylinder wall temperature,hot air temperature,HT steam pressure can be selected optimization factors according to different product features to set range.The hot air moisture exhaust opening is suggested as cut tobacco moisture control parameters to be used to control the stability of cut tobacco moisture in the normal production process.