Patent ID: 8992766
Filing Date: 2015-03-31
Classification: C10G,G01N

Abstract:
1. A method comprising: upgrading naphtha and diesel yields from fluid catalytic cracking and hydrocracking units by improving a feed quality of a petroleum feedstock, product or fraction mixture; wherein improving the feed quality of the petroleum feedstock, product or fraction mixture occurs by: wherein the estimating the feed quality is performed by: i. calculating a first empirical expression of the form: wherein Di+Ring Aromatic Content is the feed quality (%) of the petroleum feedstock, product or fraction, API is the API Gravity (° API) of the petroleum feedstock, product or fraction mixture, and T ii. plotting a trendline from a data set, wherein the trendline is in the form: wherein A′ is a potential first coefficient, B′ is a potential second coefficient, and C′ is a potential third coefficient; and adjusting one or more coefficients of the first empirical expression to improve the feed quality estimate; iii. improving upon the first empirical expression by calculating a second empirical expression of the form: wherein Conversion is the FCC or hydrocracking conversion (wt %) of the petroleum feedstock, product or fraction mixture, and Di+Ring Aromatic Content is the feed quality (wt %) of the petroleum feedstock, product or fraction; and wherein D is a fourth coefficient, and E is a fifth coefficient; iv. plotting an improved trendline from a data set, wherein the improved trendline is in the form: wherein D′ is a potential fourth coefficient, and E′ is a potential fifth coefficient; and v. adjusting one or more coefficients in the second empirical expression to improve the conversion estimate, adjusting the petroleum feedstock, product or fraction mixture to achieve a higher feed quality; wherein the API Gravity is determined using a density analyzer; and further comprising comparing one or more feed quality estimates as determined from API Gravity and T