A METHOD FOR OPTIMIZING A PROCESS IN A CHEMICAL PRODUCTION PLANT

Claims

A method for optimizing a process in a chemical production plant, wherein the production plant comprises (1) an electrical energy storage unit US; (2) a unit UR for producing electrical energy from at least one renewable source; (3) a chemical production unit UP that consumes electrical energy and is electrically connected to unit US and to unit UR; means ME for regulating the amount of electrical energy supplied from US to UP and from UR to UP; wherein the process comprises supplying electrical energy to UP from at least one of US and UR; wherein the method for optimizing the process comprises (a) determining, during a time interval Δt starting at time t, the amount of electrical energy ΔER(UP) from at least one renewable source that will be consumed in the process in UP within Δt; the amount of electrical energy ΔER(UR) that is available from UR within Δt; the value ΔER = ΔER(UP) - ΔER(UR);(b) controlling ME such that the process further comprises supplying within Δt electrical energy from UR to UP in an amount δER(UR) and from US to UP in an amount δE(US); wherein US is characterized by the amount of electrical energy ΔE(US) that can be released within Δt and UR is characterized by the amount of electrical energy ΔER(UR) available within Δt, and wherein ΔER(UR) + ΔE(US) ≥ ΔER(UP).;