Phillips Petroleum Company

Other

Edgar Durand Davis

Fan-Nan Lin

Gilbert L Colbert

David J Cones

A process and/or system is provided for isomerizing a hydrocarbon feedstock comprising saturated C hydrocarbons by contacting the hydrocarbon feedstock, in the presence of hydrogen and optionally a chloride, with a first isomerization catalyst composition in a first isomerization reactor defining a first reaction zone operated at a first reaction temperature, withdrawing a first intermediate stream comprising cyclohexane and n-hexane from the first reaction zone, separating the first intermediate stream, via a first separator, into a first product stream comprising cyclohexane and a second intermediate stream comprising n-hexane, contacting the second intermediate stream, in the presence of hydrogen and optionally a chloride, with a second isomerization catalyst composition in a second isomerization reactor defining a second reaction zone operated at a second reaction temperature greater than the first reaction temperature, and withdrawing from the second reaction zone a second product stream comprising isohexane.

Two-stage isomerization of saturated C6 hydrocarbons

According to yet another embodiment, the present invention provides a pickup truck bed cover including a truck bed having side walls, a front end, and an end gate defining the interior of the truck bed; a stationery cover portion shaped to partially cover the truck bed; a moveable portion shaped to cover a remaining part of the truck bed; and a piano hinge extending across the width of the truck bed and connecting the stationary cover and the moveable cover portion. The stationary cover portion includes first quick release toggle clamps arranged around the edges of the stationary cover portion that are configured to releasably engage the side walls of the truck bed from the interior of the truck bed. The moveable portion includes a second quick release toggle clamps arranged around the edges of the moveable cover portion that are configured to releasably engage the side walls of the truck bed from the interior of the truck bed. This allows the cover to be quickly removed from the truck, does not damage or require alteration of the truck bed, and provides a way to secure and protect the contents within the truck bed.

Removeable vehicle bed cover

An isomerization process for converting an isomerization feed stream containing alkanes having about 4 carbon atoms to about 10 carbon atoms per molecule and cycloalkanes having about 5 carbon atoms to about 10 carbon atoms per molecule to at least one product hydrocarbon isomer. The isomerization feed stream, which contains at least one feed hydrocarbon and hydrogen, is contacted in an isomerization zone at effective isomerization conditions with a catalyst where deactivation of such catalyst occurs in the isomerization zone. The isomerization process includes the presence of an additive in the isomerization feed stream. The concentration of the additive is sufficient to alleviate or diminish the deactivation of the catalyst and to maintain a substantially constant conversion of the at least one feed hydrocarbon to the at least one product hydrocarbon isomer at effective isomerization conditions.

Isomerization of hydrocarbons

A process and/or system is provided for isomerizing a hydrocarbon feedstock comprising saturated C.sub.6 hydrocarbons by contacting the hydrocarbon feedstock, in the presence of hydrogen and optionally a chloride, with a first isomerization catalyst composition in a first isomerization reactor defining a first reaction zone operated at a first reaction temperature, withdrawing a first intermediate stream comprising cyclohexane and n-hexane from the first reaction zone, separating the first intermediate stream, via a first separator, into a first product stream comprising cyclohexane and a second intermediate stream comprising n-hexane, contacting the second intermediate stream, in the presence of hydrogen and optionally a chloride, with a second isomerization catalyst composition in a second isomerization reactor defining a second reaction zone operated at a second reaction temperature greater than the first reaction temperature, and withdrawing from the second reaction zone a second product stream comprising isohexane.

Two-stage isomerization of saturated C.sub. 6 hydrocarbons

Vent gases containing propane and HF obtained from a hydrocarbon alkylation operation are treated together with an alkylate either before or after it has been debutanized thus to remove HF from said vent gases and/or the vent gases are combined with a normal butane stream before it is treated to remove HF therefrom thus to remove HF from said vent gases. In any event described, the propane in the vent gases is advantageously recovered in the normal butane containing stream.

Recovery of propane from HF alkylation vent gas

In a hydrodesulfurization process having separate naphtha and distillate hydrodesulfurization zones, volatile fractions of the distillate hydrodesulfurization effluent are recycled to the naphtha feed stream before it combines with the hydrogen stream and enters the hydrodesulfurization zone and heavy fractions separated from the naphtha hydrodesulfurization effluent are combined with a diesel fuel oil fraction separated from the distillate hydrodesulfurization effluent. Alternatively, light fractions separated from the distillate hydrodesulfurization effluent are combined with a condensed liquid stream being returned to a distillation fractionation zone separating light fractions from the naphtha hydrodesulfurization effluent.

Parallel hydrodesulfurization of naphtha and distillate streams with

In a system wherein a topped crude catalytic cracking system and a gas oil catalytic cracking system are operated, and the heavy cycle oils from each system are combined and the combined heavy cycle oil stream is solvent extracted to provide an aromatic extract suitable as feed for a carbon black operation, the aromaticity of the extract is increased by passing a substantial portion of the topped crude heavy cycle oil to the gas oil fractionator and recovering a heavy cycle oil from the gas oil fractionator as charge to solvent extraction.

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Borger, TX, United States of America

Edgar Durand Davis