Circular solvent extractor

Column material balance control responsive to differential press

Conditioning drum for a tar sands hot water extraction process

Conical screen structure

Constraint control of a fractional distillation process

Continuous autorefrigerative dewaxing apparatus

Control system for a furfural refining unit receiving heavy sour

Control system for a furfural refining unit receiving light sour

Control system for a furfural refining unit receiving light swee

Control system for a furfural refining unit receiving medium sou

Control system for a furfural refining unit receiving medium swe

Control system for an MP refining unit receiving medium sweet ch

Control system for an N-methyl-2-pyrrolidone refining unit recei

Control system for an N-methyl-2-pyrrolidone refining unit recei

Control system for an N-methyl-2-pyrrolidone refining unit recei

Control system for delayed coker

Controlling the temperature of a depropanizer tower by chromatog

Cracking furnace

Cracking furnace control

Crude oil emulsion treating apparatus