Operation of fixed bed Resid HDS Unit in mild hydrocracking mode

Miscellaneous · Fri Jan 01 00:00:00 EST 1993

OSTI ID:7286060

Hohnholt, J F; Spengler, E L ^[1]; Takeuchi, N; Uchiyama, S ^[2]

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1. Valero Refining Co., Corpus Christi, TX (United States)
2. Idemitsu Kosan Co., Ltd., Tokyo (Japan)

Valero Refining has been restructuring their refinery to optimize conversion of high sulfur atmospheric resid into premium environmentally acceptable products. Valero has operated the Resid HDS Unit in a mild hydrocracking mode since 1989 to produce as much light liquid products as possible, in addition to producing low sulfur hydrotreated residue for feedstock to the HOC Unit. A resid hydrocracking catalyst (R-HYC) that Idemitsu Kosan Co. Ltd. and Catalyst Chemicals Ind. Co. (CCIC) have collaboratively developed was used in the Resid HDS to increase the yield of light liquid products. In summary, a twenty month run was successfully achieved on Valero's Resid HDS Unit using R-HYC catalyst. The yield of high quality transportation fuels was increased about 10 vol% over the yield obtained with conventional hydrotreating catalyst alone. The bottoms products from the Resid HDS Unit containing R-HYC catalyst was a high quality HOC feed. There was little or no difference in crackability of hydrotreated resid when compared to the product from a Resid HDS Unit containing conventional resid hydrotreating catalysts. Refining economics were improved by processing increased crude resid in the HOC Unit. Higher yields of hydrotreated atmospheric gas oil (AGO, 650--800 F) were achieved in resid hydrocracking mode, increasing further the profit margin of Valero Refining, since the AGO is processed in a recently completed gas oil hydrocracker.

• OSTI ID: 7286060
• Resource Relation: Other Information: Paper AM-93-59
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
CATALYSTS
PERFORMANCE TESTING
PETROLEUM RESIDUES
DESULFURIZATION
HYDROCRACKING
CHEMICAL REACTION YIELD
EXPERIMENTAL DATA
FLOWSHEETS
GAS OILS
CHEMICAL REACTIONS
CRACKING
DATA
DECOMPOSITION
DIAGRAMS
DISTILLATES
ENERGY SOURCES
FOSSIL FUELS
FUELS
INFORMATION
NUMERICAL DATA
PETROLEUM
PETROLEUM DISTILLATES
PETROLEUM FRACTIONS
PETROLEUM PRODUCTS
PYROLYSIS
TESTING
THERMOCHEMICAL PROCESSES
YIELDS
020400* - Petroleum- Processing