Production of C.sub.5 + gasoline from butane and propane

Details Production of C.sub.5 + gasoline from butane and propane Production of C.sub.5 + gasoline from butane and propane

1991-04-10

1992-12-15

Shine, W. J.

Chemistry of hydrocarbon compounds

Plural parallel syntheses

Using same catalyst, solvent, inert heat carrier, or...

585300, 585302, 585303, 585304, 585708, 585752, C07C 100

Patent

active

051719126

ABSTRACT:
A process is disclosed that provides a high conversion of n-butane to C.sub.5 + gasoline by integrating the medium pore metallosilicate catalyzed process for fresh n-butane conversion to C.sub.5 + gasoline with a medium pore metallosilicate catalyzed process for propane conversion in a manner which allows a portion of the propane by-product of n-butane conversion to be converted to C.sub.4 + alkanes, followed by recycle of the n-butane portion of the C.sub.4 + alkanes. It has been discovered that separation of the products from the separate propane and n-butane conversion steps can be carried out concurrently in a single fractionator to provide the C.sub.5 + gasoline product and the propane and butane recycle streams. Preferably, the fractionator butane cut is treated in a deisobutanizer to recover isobutane and n-butane recycle. A further discovery utilizes the common fractionator not only to separate the products from the conversion processes but to concurrently separate a mixed fresh C.sub.3 -C.sub.4 feedstream to the integrated process.

REFERENCES:
patent: 3676522 (1972-07-01), Sieg
patent: 3718706 (1973-02-01), Sieg
patent: 4324646 (1982-04-01), Le Page et al.
patent: 4642404 (1987-02-01), Shihabi
patent: 4665265 (1987-05-01), Chu et al.
patent: 4686316 (1987-08-01), Morrison
patent: 4754100 (1988-06-01), Sorensen et al.
U.S. patent application 210,177 filed Jun. 20, 1988.

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