Direct fired convection heating in residuum oil solvent extracti

Details Direct fired convection heating in residuum oil solvent extracti Direct fired convection heating in residuum oil solvent extracti

1997-09-08

1998-12-01

Myers, Helane

Mineral oils: processes and products

Fractionation

Deasphalting

208320, 208427, 201 15, 201 14, C10C 300

Patent

active

058433031

ABSTRACT:
A residuum oil solvent extraction process is improved by using direct fired convection heaters for heating the asphaltene, the solvent-deasphalted oil phase, the deasphalted oil and the stripping steam, instead of hot oil heat exchangers. The convection heaters are fired using recirculated flue gas so that the hot flue gas supplied to the convection heaters has a temperature between 800.degree. F. and 1400.degree. F.

REFERENCES:
patent: 2940920 (1960-06-01), Garwin
patent: 4374017 (1983-02-01), Barney
patent: 4572781 (1986-02-01), Krasuk
A. H. Northup et al., "Advances in Solvent Deasphalting Technology," presented at the 1996 NPRA Annual Meeting, Mar. 17-19, Convention Center, San Antonio, Texas.
S.R. Nelson et al., "Rose.RTM.: The Energy-Efficient, Bottom-of-the-Barrel Alternative," presented at the 1985 Spring A.I.Ch.E. Meeting, Houston, Texas, Mar. 24-28, 1985.

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