Batch distillation
Column material balance control responsive to differential press
Constraint control of a fractional distillation process
Control system for delayed coker
Controlling the temperature of a depropanizer tower by chromatog
Cracking furnace control
Device for continuous sampling, especially in a distillation col
Device for recovery of excess gas in an oil/gas treatment plant
Draw rate signal generator
Fractional distillation column pumparound heat removal control
Means for controlling the temperature of a depropanizer tower
Method and apparatus for the control of pitch operation
Method and apparatus for the control of pitch still operation
On-line acid monitor and neutralizer feed control of the overhea