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Application of High Temperature Simulated Distillation (HTSD) to the Residuum Oil Supercritical Extraction (ROSETM) Process in Petroleum Refining

IP.com Disclosure Number: IPCOM000217607D
Publication Date: 2012-May-08

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Application of High Temperature Simulated Distillation (HTSD) to the Residuum Oil Supercritical Extraction (ROSETM) Process in Petroleum Refining

Dan C.Villalanti, and Joseph C. Raia

Triton Analytics Corporation, 16840 Barker Springs #302, Houston, Texas 77084

Murugesan Subramanian,and Bruce Williams

Kellogg Brown & Root, Inc., P.O. Box 3, Houston, Texas 77001-0003

Abstract

The gas chromatographic method of High Temperature Simulated Distillation (HTSD) is described. The use of this technique is presented for the characterization of petroleum refmery residual feed, deasphalted oil (DAO), and asphaltene fractions in refmery ROSETM solvent deasphalting operations. The HTSD method is valuable for characterizing the fractions from the deasphalting process to obtain percentage yield with boiling point data over the range fiom about 97 O Fto about 1400 OF. Asphaltene removal fkom petroleum resid results in improved quality and high recovery of deasphalted oil product for use as lube oil, fluid catalytic cracking, or hydrocracker feedstocks.


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In the refining of petroleum, crude oil is processed and converted into commercially valuable products which include transportation fuels - gasoline, turbine (jet) fuels, diesel, the light heating oils, lubrication oils, refrigeration oils, transformer oils, and feedstocks for petrochemicals (1). The refining process is typically carried out to achieve high- volume yields of those products with greater economic value, such as the lighter boiling fkactions used in transportation and as light heating oils.'

Crude oil bottoms consistently present challenges to refiners to effectively convert them into useful products. Among the many "bottom of the barrel" processes available, solvent deasphalting is predominantly used to recover highvalue products from petroleum resids that are excellent feedstock for preparation of lube oil, fluid catalytic cracking (FCC), and hydrocrackers. The Residuum Oil Supercritical Extraction (ROSETM) process licensed by Kellogg Brown & Root is the state-of-the-art and energy efficient solvent extraction process widely used in the industry today (2).

The method of High Temperature Simulated Distillation (HTSD) is a useful tool for characterizing the hydrocarbon yield with boiling point profiles of fractions from resid solvent extraction process. HTSD is a relatively new method which extends ASTM D2887 (IP 4060) in the determination of the boiling range distribution of petroleum hydrocarbons to a frnal boiling point of about 1400°F (Figure 1). By using recent advances in capillary gas chromatography(GC) column and stationary phase technologies, together with either programmed temperature vaporization (PTV) or on- column injection techniques, HTSD achieves adequate separation &om C5 to C120

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normal paraffins which allows the characterizationof petroleum products from about 97" F to 1380°F(3,4, 5).

By the proper choice of GC con...