Abstract: Systems and methods are disclosed for managing the operation of a plant, such as a chemical plant or a petrochemical plant or a refinery, and more particularly for enhancing system performance of a catalyzed reaction system by, among other features, detecting catalyst deactivation and cycle length. Plants may include those that provide hydrocarbon cracking or other process units. A plant may include a reactor, a heater, a catalyst bed, a separator, and other equipment. The equipment may use catalyst to treat feed products to remove compounds and produce different products. Catalysts used in the various reactors in these processes become deactivated over time. Systems and methods are disclosed for extending catalyst life and thereby improving efficiency of the plant.

Abstract: Systems and methods are disclosed for managing the operation of a plant, such as a chemical plant or a petrochemical plant or a refinery, and more particularly for enhancing system performance of a catalyzed reaction system by, among other features, detecting catalyst deactivation and cycle length. Plants may include those that provide hydrocarbon cracking or other process units. A plant may include a reactor, a heater, a catalyst bed, a separator, and other equipment. The equipment may use catalyst to treat feed products to remove compounds and produce different products. Catalysts used in the various reactors in these processes become deactivated over time. Systems and methods are disclosed for extending catalyst life and thereby improving efficiency of the plant.

Abstract: Methods and systems for producing gasoline are disclosed. In one exemplary embodiment, a method for producing gasoline includes the steps of isomerizing a first stream comprising normal C6 hydrocarbons to produce a second stream comprising first and second branched C6 hydrocarbons and deisohexanizing the second stream to produce a third stream comprising the first and second branched C6 hydrocarbons wherein the first branched hydrocarbons and the second branched hydrocarbons are present in a first proportion, and a fourth stream comprising the first second branched hydrocarbons wherein the first branched and the second branched hydrocarbons are present in a second proportion. The first proportion has a relative percentage of first branched hydrocarbons that is greater than a relative percentage of first branched hydrocarbons in the second proportion.