Automatic control and optimization of a fluidized catalytic cracker

• US 3,175,968 A
• Filed: 06/23/1961
• Issued: 03/30/1965
• Est. Priority Date: 06/23/1961
• Status: Expired due to Term

• Current Assignee: Donald E. Berger
• Original Assignee: Donald E. Berger
• Inventors: Berger, Donald E.
• Application Number:
  US04/119,114
• Time in Patent Office: 1,376 Days
• US Class Current: 208/164
• CPC Class Codes: B01J 19/0033 Optimalisation processes, i.e. processes with adaptive control systems adaptive control systems per se G05B13/00
• CPC Class Codes: C10G 11/187 Controlling or regulating
• CPC Class Codes: Y10S 208/01 Automatic control

Claims

4. A METHOD FOR AUTOMATICALLY CONTROLLING AND OPTIMIZING THE FLUIDIZED CATALYST CRACKING OF PETROLEUM OILS RESPONSIVE TO CONTROL SIGNALS CALCULATED BY A COMPUTER HAVING A FIXED PROGRAM, COMPRISING:

SETTING THE AIR FLOW RATE TO THE CATALYST REGENERATOR AT ITS MAXIMUM VALUE;

COMPUTING THE COKE BURNING CAPACITY OF SAID REGENERATOR CORRESPONDING TO SAID MAXIMUM AIR FLOW RATE ACCORDING TO A STOICHIOMETRIC CALCULATION WITHIN SAID FIXED PROGRAM TO GIVE A FIRST COMPUTED MEASUREMENT SIGNAL;

COMPUTING THE CONVERSION OF SAID HYDROCARBON MATERIAL FEEDS WITHIN A FLUIDIZED CATALYTIC REACTOR ACCORDING TO A MATERIAL BALANCE CALCULATION WITHIN SAID FIXED PROGRAM;

COMPUTING THEREFROM PREDICTIVELY THE RATE OF COKE LAYDOWN IN SAID REACTOR ACCORDING TO A COKE LAYDOWN CALCULATION WITHIN SAID FIXED PROGRAM TO GIVE A SECOND SIGNAL;

COMPARING SAID FIRST AND SECOND SIGNAL AND OBTAINING A FIRST CONTROL SIGNAL, THE MAGNITUDE OF WHICH IS RELATED TO THE DIFFERENCE BETWEEN SAID FIRST AND SECOND SIGNALS;

ADJUSTING THE FLOW RATE OF THE