Means for controlling dewaxing apparatus
Means for controlling the temperature of a depropanizer tower
Mechanically agitated liquid-vapor contacting apparatus
Method and apparatus for changing solvent composition in a solve
Method and apparatus for cleaning petroleum emulsion
Method and apparatus for removing bituminous oil from oil sands
Method and apparatus for the control of pitch operation
Method and apparatus for the control of pitch still operation
Method and device for reclaiming fluid lubricants
Method for processing hydrocarbon pyrolysis effluent
Mobile refinery