Patent ID: 8775138
Filing Date: 2014-07-08
Classification: G05B,G06F,G06Q,Y10S

Abstract:
1. A method for withdrawing a fluid stream from a petroleum, petrochemical, or chemical manufacturing facility using a linear programming model of the facility, the method comprising: (a) providing a reference model of the manufacturing facility, the reference model operating on a first vector of rank n of inputs {I} to produce a second vector of rank m of outputs {K}, wherein (b) specifying an initial value {I (c) providing j simulated streams {S}, each of the {S (d) adding to and then removing from the designated intermediate stream each of the j simulated streams {S (e) simulating a diversion of a weight fraction {W} of the entire designated intermediate stream away from the reference model; (f) deriving the linear programming model from the reference model, the linear programming model being expressed as K (g) withdrawing a weight fraction {W} of the intermediate fluid stream from the manufacturing facility in order to change the mass flow rate of the output fluid from the facility to a final value, the final value being substantially equal to the corresponding K