Cylinder Dryer Control System Improvement And Implementation

The KLK Cylinder Dryer is one of the key equipments in the primary tobacco processingworkshop of cigarette factory. The moisture content of the cut lamina from previous processcould cause mutual adhesion. So the cut lamina must be dried in the Cylinder Dryer to getdehumidification, loose, uniform moisture content, and produce a certain crimp and increasethe filling power, achieving the requirements of making cigarettes. So the Cylinder Dryer iseffective to the quality of tobacco products.Researching and improving the control system of the Cylinder Dryer to control themoisture of the cut lamina has always been the focus of cigarette factories. In tobacco industry,the cut lamina drying process in primary tobacco processing workshop faces a commonproblem of large amount of over dried cut lamina in the head and the tail of the production.Reducing the over dried cut lamina in drying process has a great meaning of reducing the unitconsumption.This paper analysed the structure, traditional control parameters and control methods ofthe KLK Cylinder Dryer made by―Hauni Maschinenbau AG‖, according to the actualproducing situation in the workshop, reconfigure the control parameters including dryingfactor Ck1, steam valve PI controller and the cylinder rotary speed. Using the Matlab curvefitting tool to derive the precise empirical formula of steam temperature-pressure conversionin a certain pressure range, the original steam pressure–temperature conversion algorithm isimproved. Not only improved the accuracy of the entire dried cut lamina moisture control, butalso reduced the over dried cut lamina in the head and the tail, which has a very practicalengineering value.