Abstract: System and method for chemical manufacture utilizing a dynamic optimizer for a chemical process including upstream and downstream processes. The dynamic optimizer includes a maximum feed calculator, operable to receive one or more local constraints on the downstream processes and one or more model offsets, and execute steady state models for the downstream processes in accordance with the local constraints and the offsets to determine maximum feed capacities of the downstream processes; and a feed coordinator, operable to receive the maximum feed capacities, and execute steady state models for the upstream processes in accordance with the maximum feed capacities and a specified objective function, subject to global constraints, to determine upstream production parameters for the upstream processes, which are usable to control the upstream processes to provide feeds to the downstream processes in accordance with the determined maximum feeds and the objective function subject to the global constraints.

Abstract: A system includes a biodiesel production system and an advanced process controller configured to implement a model predictive control algorithm to control one or more aspects of the biodiesel production system.

Abstract: System and method for chemical manufacture utilizing a dynamic optimizer for a chemical process including upstream and downstream processes. The dynamic optimizer includes a maximum feed calculator, operable to receive one or more local constraints on the downstream processes and one or more model offsets, and execute steady state models for the downstream processes in accordance with the local constraints and the offsets to determine maximum feed capacities of the downstream processes; and a feed coordinator, operable to receive the maximum feed capacities, and execute steady state models for the upstream processes in accordance with the maximum feed capacities and a specified objective function, subject to global constraints, to determine upstream production parameters for the upstream processes, which are usable to control the upstream processes to provide feeds to the downstream processes in accordance with the determined maximum feeds and the objective function subject to the global constraints.

Abstract: System and method for chemical manufacture utilizing a dynamic optimizer for a chemical process including upstream and downstream processes. The dynamic optimizer includes a maximum feed calculator, operable to receive one or more local constraints on the downstream processes and one or more model offsets, and execute steady state models for the downstream processes in accordance with the local constraints and the offsets to determine maximum feed capacities of the downstream processes; and a feed coordinator, operable to receive the maximum feed capacities, and execute steady state models for the upstream processes in accordance with the maximum feed capacities and a specified objective function, subject to global constraints, to determine upstream production parameters for the upstream processes, which are usable to control the upstream processes to provide feeds to the downstream processes in accordance with the determined maximum feeds and the objective function subject to the global constraints.

Abstract: A decorative light string including a plurality of first and second lights is provided. The first lights are distributed along the length of the light string and are spaced apart by a first predetermined distance. The second lights are arranged in a plurality of drops, and each drop is retained in alignment with one of the plurality of fist lights by a coupling means. In one exemplary embodiment, the decorative light string comprises a first light string including electrically parallel-connected C-type lights, a second light string including electrically series-connected mini lights arranged in drops, and a plurality of connectors for coupling the first and second light strings together.

Abstract: A decorative light string including a plurality of first and second lights is provided. The first lights are distributed along the length of the light string and are spaced apart by a first predetermined distance. The second lights are arranged in a plurality of drops, and each drop is retained in alignment with one of the plurality of fist lights by a coupling means. In one exemplary embodiment, the decorative light string comprises a first light string including electrically parallel-connected C-type lights, a second light string including electrically series-connected mini lights arranged in drops, and a plurality of connectors for coupling the first and second light strings together.