Visbreaking process

Details Visbreaking process Visbreaking process

1983-12-19

1985-08-20

Gantz, D. E.

Mineral oils: processes and products

Chemical conversion of hydrocarbons

Cracking

208107, C10G 900

Patent

active

045362807

ABSTRACT:
An improved visbreaking process having a lower utilities (heating fuel) cost is disclosed. The feed stream is heated by indirect heat exchange against the bottoms stream of a first fractionation column, which receives the effluent of the visbreaking heater. A portion of this bottoms stream is then used as quench. This quench stream is hotter and has a higher flow rate than previous designs. The feed is heated to a higher temperture by the indirect heat exchange and therefore less fuel is required in the visbreaker fired heater.

REFERENCES:
patent: 3065165 (1962-11-01), Amis et al.
patent: 4029571 (1977-06-01), Curtin
patent: 4169782 (1979-10-01), Thompson
Olsen, "Unit Processes and Principles of Chemical Engineering", D. Van Nostrand Co., Inc., pp. 1-3, 1932.
"Combination Unit", Petroleum Refiner, Sep. 1958, p. 249.
Hydrocarbon Processing, May 1980, pp. 101-109, "New Roles for Thermal Cracking", by Frank Stolfa.
Oil & Gas Journal, Apr. 13, 1981, pp. 109-120, "Visbreaking Process has Strong Revival", by Martin Hus.
Hydrocarbon Processing, Jan. 1979, pp. 131-136, "Visbreaking: A Flexible Process", by A. Rhoe et al.
Kirk-Othmer Encyclopedia of Chemical Technology, 2nd Ed., vol. 15, pp. 18-23, 1968 by John Wiley & Sons, Inc.

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