Method of controlling a dehydrogenation process

Claim 1

IN A DEHYDROGENATION PROCESS WHICH COMPRISES PASSING A LIGHT HYDROCARBON FEED STREAM TO A DEHYDROGENATION REACTION ZONE CONTAINING A DEHYDROGENATION CATALYST, SAID LIGHT HYDROCARBON FEED SELECTED FROM THE GROUP COMPRISING NORMAL BUTANE, BUTYLENES AND AMYLENES AND WITHDRAWING FROM SAID DEHYDROGENATION REACTION ZONE AN EFFLUENT HYDROCARBON STREAM; A METHOD OF CONTROL WHICH COMPRISES MEASURING A PROPERTY OF SAID LIGHT HYDROCARBON FEED STREAM WHICH IS REPRESENTATIVE OF THE COMPOSITION THEREOF, PASSING A FIRST SIGNAL REPRESENTATIVE OF SAID MEASUREMENT TO A COMPUTING ZONE, MEASURING A PROPERTY OF SAID EFFLUENT STREAM WHICH IS REPRESENTATIVE OF THE COMPOSITION THEREOF, PASSING A SECOND SIGNAL REPRESENTATIVE OF SAID EFFLUENT STREAM MEASUREMENT TO SAID COMPUTING ZONE, PASSING A THIRD SIGNAL REPRESENTATIVE OF THE EFFECTIVENESS OF SAID DEHYDROGENATION REACTION FROM SAID COMPUTING ZONE TO A FIRST CONTROL ZONE RESPONSIVE TO SAID FIRST AND SECOND SIGNALS, PASSING A FOURTH ERROR SIGNAL RESPONSIVE TO SAID THIRD SIGNAL FROM SAID FIRST CONTROL ZONE TO A SECOND CONTROL ZONE, PASSING A FIFTH SIGNAL REPRESENTATIVE OF A REQUIRED DEHYDROGENATION REACTION ZONE TEMPERATURE FROM SAID FIRST CONTROL ZONE TO A THIRD CONTROL ZONE RESPONSIVE TO SAID THIRD SIGNAL, PASSING A SIXTH SIGNAL REPRESENTATIVE OF A MAXIMUM ALLOWABLE OPERATING TEMPERATURE IN SAID DEHYDROGENATION REACTION ZONE TO SAID SECOND AND SAID THIRD CONTROL ZONES, SAID THIRD CONTROL ZONE CAPABLE OF TRANSMITTING A SEVENTH SIGNAL REPRESENTATIVE OF THE MINIMUM OF SAID FIFTH AND SIXTH SIGNALS RECEIVED BY SAID THIRD CONTROL ZONE, PASSING SAID SEVENTH SIGNAL FROM SAID THIRD CONTROL ZONE TO A MEANS FOR MANIPULATING A TEMPERATURE OF SAID DEHYDROGENATION REACTION ZONE, THEREBY MANIPULATING SAID TEMPERATURE RESPONSIVE TO SAID SEVENTH SIGNAL, PASSING AN EIGHTH SIGNAL REPRESENTATIVE OF A MEASURED TEMPERATURE OF SAID DEHYDROGENATION REACTION ZONE TO SAID SECOND CONTROL ZONE, SAID SECOND CONTROL ZONE SOLVING THE EQUATION