Uop Lcc

Joe Quock

Carmen M Yon

Henry Rastelli

Wim P Reel

Richard K Hoehn

John Patrick Brady

James T Wexler

The invention provides processes for the production of hydrocarbons from a biorenewable feedstock blended with a mineral feedstock comprises hydrotreating to remove heteroatoms and saturate olefins. The carbon monoxide is not fed to the downstream hydroisomerization reactor but supplanted with a hydrogen gas with a low concentration of carbon monoxide so as not to poison the hydroisomerization catalyst to improve the cold flow properties for a diesel fuel.

Process for producing fuels from a blended biorenewable feed

A process for the regeneration of oxygenate containing adsorbents uses regenerant streams such as LPG and isomerate products for the desorption of oxygenate compounds. The process discloses arrangements for the integration of regenerant treatment into the adsorption scheme and for the enhancement of the isomerate product. The integrated flowscheme can be used to remove sulfur and water from contaminated regenerants or to deliver the oxygenates into the gasoline pool.

Liquid phase adsorption process

A process for the etherification and separation of C.sub.3 -C.sub.5 hydrocarbons is improved by the advantageous integration of an oxygenate recovery unit having a 3-bed arrangement into the etherification separation section. A feedstream including C.sub.3 hydrocarbons and isobutene are reacted with methanol in an etherification to produce an etherification effluent that is separated in a first separator into a bottoms stream of MTBE product and an overhead stream of unreacted isobutane, methanol, other oxygenate compounds and C.sub.3 -hydrocarbons. After recovery of methanol, in an adsorptive separation process, the methanol deficient overhead stream enters a second separation zone in the form of depropanizer for the separation of isobutane and higher boiling hydrocarbons from the C.sub.3 hydrocarbons. Any oxygenate compounds that are carried from the bottom of the column with the C.sub.4 + hydrocarbon stream are removed in an oxygenate recovery unit designed to produce an ultra pure product essentially free of oxygenates. A portion of the purified hydrocarbons from the oxygenate recovery unit are recycled as regenerant through the oxygenate recovery unit to desorb oxygenate compounds. This integration of the oxygenate recovery unit provides a closed loop for its regeneration that utilizes existing separation facilities for the removal of oxygenate compounds from the hydrocarbons of the regenerant stream.

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Hopewell Junction, NY, United States of America

Joe Quock