Inferential Control Technology

Specializing in process engineering oriented APC, Dr. Friedman pioneered the use of first-principle for inferential control.

He has developed models for nearly every configuration of distillation columns and for most reaction processes. Currently about 200 process units are being controlled using Petrocontrol inferential package, using a total of about 1500 property inferences.

 

 

GCC (Generalized Cutpoint Control): A multi-product fractionator inferential package, suitable for crude units, vacuum, FCC, cokers, visbreakers and other main fractionators with side streams. This package has the advantage of quick and precise response to major disturbances such as crude switch, coker drum switch, etc.

GDS (Generalized Distillation Shortcut): An inference model for predicting distillation top and bottom product purities. It has been implemented on a wide variety of distillation equipment, from simple light-ends columns (debutanizers, depropanizers, naphtha splitters, etc.) to superfractionators (BTX columns, deisobutanizers, ethylene splitters, etc).

REFS(Gasoline Reformer Severity): An inferential model package, predicting both the feed PNA (paraffins, naphthenes, olefins), and the product qualities: reformate octane, % aromatics, RVP, etc.

FCCS(FCC reactor / regernerator Severity): Our FCC model begins with general calculations around the reactor. These inferences can be used as APC control variables or simply as engineering indicators.