Abstract: Systems and methods manage unit operating data of a customer. A customer may be a refinery or any other entity that utilizes unit operating data. Unit operating data may include feed stock data, operations data, yield data, and catalyst data. An analysis service provider analyzes the unit operating data and makes results of the analysis accessible to the customer. The analysis may be based on historical data, industry-wide data, or changes in feed stock data, operations data, yield data, and catalyst data.

Abstract: A method for operating a fluid catalytic cracking unit comprising a regeneration zone and a reaction zone with a relatively reduced temperature in the regeneration zone while processing a hydrocarbon feedstock having a 50 volume percent distillation temperature greater than about 500.degree. F. which method comprises contacting the feedstock in a reaction zone with a mixture of regenerated fluidizable cracking catalyst and fluidizable low coke make solid particles comprising a refractory inorganic oxide in a ratio of low coke make solid particles to cracking catalyst from about 1:100 to about 10:1, the low coke made solid particles having a surface area of less than about 5 m.sup.2 /g and a coke making capability of less than about 0.