Texaco Inc.

Huntsman Specialty Chemicals Corporation

David Durham Chess

Robert M Gipson

Mark E Taylor

William K Culbreth, Iii

Ajit K Bhattacharya

Mahendra S Patel

Randlow Smith

Eileen T Nguyen

Clements A Helbling, Jr

Ronald William Hill

William Dale Henderson

George R Tamalis

Raj Kumar Khanna

David George Pottratz

The liquid and gaseous products formed by reacting oxygen with isobutane in an oxidation reactor are separately processed; the liquid reaction product being charged to a distillation zone and separated into a lower boiling isobutane fraction and a higher boiling fraction comprising tertiary butyl alcohol and tertiary butyl hydroperoxide; the gaseous reaction product comprising inert gases and vaporized and/or entrained isobutane being cooled by an amount sufficient to condense isobutane contained therein for recycle to the oxidation reactor; the remaining gases, including isobutane being charged to a tertiary butyl alcohol absorber to obtain a solution of isobutane in tertiary butyl alcohol that is recycled to the distillation zone.

Tertiary butyl alcohol absorption process for recovering propylene and

A heat exchanger is provided, including a tubular shell having an opening in one end thereof, an open-topped, side-slotted shroud mounted inside the shell, a bundle of tubes extending through the opening into the shroud, means for circulating a hot fluid through the bundle of tubes,

Shrouded heat exchanger

A waste molybdenum-containing stream recovered from the work-up of a reaction mixture wherein propylene has reacted with t-butyl hydroperoxide to form propylene oxide (in the presence of a complex of ethylene glycol and a molybdenum compound) is passed as an oil-miscible/soluble molybdenum-containing catalyst to a reaction wherein heavy hydrocarbon is hydroconverted to lower boiling products in the presence of heterogeneous catalyst.

Hydroconversion process containing a molybdenum complex recovered from

An improved dual fractionating process for hydrocarbons which employs a high pressure and a low pressure fractionating zone, light ends from the low pressure fractionating zone being introduced into the high pressure fractionating zone, heavy ends from the high pressure fractionating zone being introduced into the low pressure fractionating zone, the improvement being characterized by the introduction into one of the fractionating zones of a stable hydrocarbon stream, the hydrocarbon stream being stable under the conditions existing in the high pressure fractionating zone, at least a portion of the hydrocarbon stream having a boiling point lower than the boiling point of at least one of the unstable components which accumulates in the high pressure fractionating zone.

Dual pressure fractionation of hydrocarbons

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Houston, TX, United States of America

David Durham Chess