Standard Oil Company (indiana)

Amoco Corporation

Ronald Coates

David F Tatterson

Thomas M O'Grady

Juergen K Holzhauer

Chang M Park

John V Peterson

A process for the production of aromatic esters or aromatic anhydrides with improved color properties is disclosed. This process comprises treating the aromatic ester or aromatic anhydride with an activated boric acid followed by fractionation.

Process for the production of aromatic anhydrides and aromatic esters

A process is provided to produce and stabilize shale oil. In the process, raw oil shale is retorted with heat carrier material to liberate an effluent product stream comprising hydrocarbons and entrained particulates of oil shale dust. In order to minimize polymerization of the product stream and enhance agglomeration of the shale dust, the product stream is stabilized with a hydrogen donor quench upon exiting the retort. The quenched stream is subsequently dedusted and upgraded.

Shale oil stabilization with a hydrogen donor quench

A process is provided to produce and stabilize shale oil. In the process, raw oil shale is retorted with heat carrier material to liberate an effluent product stream comprising hydrocarbons and entrained particulates of oil shale dust. In order to minimize polymerization of the product stream and agglomerate the shale dust, the product stream is stabilized with a hydrogen donor quench in the presence of a hydrogen transfer catalyst upon exiting the retort. The quenched stream is subsequently purged of catalyst, dedusted, and upgraded.

Shale oil stabilization with a hydrogen donor quench and a hydrogen

The process comprises passing a hydrocarbon stream under reforming conditions through each of the reactors of the unit; when the catalyst in all of the reactors in the unit except the lead reactor has become deactivated to such an extent that the catalyst in all of the reactors other than the lead reactor must be regenerated, discontinuing the flow of the hydrocarbon stream through all of the reactors in said unit other than the lead reactor while continuing to pass the hydrocarbon stream through the lead reactor; regenerating the beds of catalyst in each of the reactors of said unit other than the lead reactor to remove the carbonaceous deposits from the catalyst in such beds and to restore at least partially the activity of the catalyst while continuing to pass the hydrocarbon stream through the lead reactor under reforming conditions; resuming the flow of the hydrocarbon stream through all of the reactors in the unit; and repeating all of the aforesaid steps until the catalyst in the lead reactor has become deactivated to such an extent that it must be regenerated. Hydrogen-containing gas need not be recycled to the lead reactor during the regeneration of the catalyst in the other reactors. The reforming conditions that are employed in the lead reactor of the unit are relatively mild reforming conditions in order to provide an extended period of time of at least 18 months to 3 years for using the catalyst in the lead reactor prior to its becoming deactivated to such an extent that it must be regenerated. Preferably, the catalyst comprises a Group VIII noble metal.

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Naperville, IL, United States of America

Ronald Coates