Mechanical shattering of asphaltenes in FCC riser

Details Mechanical shattering of asphaltenes in FCC riser Mechanical shattering of asphaltenes in FCC riser

1992-10-13

1994-07-12

Mars, Howard T.

Mineral oils: processes and products

Chemical conversion of hydrocarbons

Cracking

208108, 208111, 208118, 208120, C10G 4700, C10G 1100

Patent

active

053285913

ABSTRACT:
An FCC process and apparatus for atomizing heavy feed are disclosed. A liquid feed containing stacked asphaltenes is pressurized, and preferably heated, with a gas such as light hydrocarbons. Pressurized gas and liquid discharge at high velocity into an expansion chamber, where shear force and sudden expansion disrupt stacked structures. Preferably, some thermal conversion, visbreaking, occurs in the expansion chamber. The disrupted feed is discharged into an FCC reactor, preferably to the base of a riser reactor, with a lighter feed, such as a gas oil, added higher up in the riser. Improved atomization and vaporization of the heavy feed in the riser increases conversion and reduces coke make.

REFERENCES:
patent: 4601814 (1986-07-01), Mauleon et al.
patent: 4814067 (1989-03-01), Gartside et al.
patent: 4985136 (1991-01-01), Bartholic
patent: 5096566 (1992-03-01), Dawson et al.
Oil & Gas Journal, Fluid Catalytic Cracking Report, Jan. 8, 1990, Avidan et al.

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