Tenneco Chemicals, Inc.

Enterprise Products Company

David R Keck

James O Nye

Robin M Pate

Improved operation of an LPG fractionating facility having a deethanizer, depropanizer and debutanizer is obtained by operating the deethanizer at a lower pressure than conventional, (e.g., less than 500 psig), thereby reducing the temperature of the deethanizer bottoms such that the debutanizer operated at greater than conventional pressure (e.g., over 100 psig) produces a mixed butane overhead at a higher temperature than the deethanizer bottoms whereby the mixed butane overhead is condensed and cooled by indirect contact with the deethanizer bottoms thereby heating the bottoms and supplying a substantial portion of the energy required for the fractionation in the deethanizer. The energy reduction for the three column system through the improved heat recovery system is 10% to 50% depending upon the feed composition.

Fractionation system for stabilizing natural gasoline

An in-line apparatus for separating oversize particles from a pressurized fluid slurry which comprises:

Growing community of inventors

Seabrook, TX, United States of America

David R Keck