SYSTEM FOR AUTOMATIC CONTROL OF RECTIFICATION PROCESS Russian patent published in 2001 - IPC

FIELD: systems for automatic control of rectification processes, possibly in chemical, petrochemical and other industry branches. SUBSTANCE: system includes pickups for determining flowrate and content of raw material, pickup for detecting flowrate of cube product; material balancing unit; dynamic unit; adders; cube product flowrate controller; pickup for detecting reflux flowrate; unit for analysis of reflux content; reflux flowrate controller; unit for analysis of content of material in lower check plate or in cube of column; cube product flowrate controller; level pickup in reflux vessel; distillate flowrate controller; pickup for measuring temperature in cube of column; valve for feeding heat transfer agent to boiler; unit for correcting reflux number; compensators of disturbances of flowrate and raw material content; compensators of crossing communications; temperature regulator in cube of column; reflux content regulator; level pickup in cube of column. EFFECT: enhanced degree of controlling content of cube product and distillate. 1 dwg