Exxon Research and Engineering Company

Exxonmobil Chemical Patents Inc.

Christopher G Lington

Stephen Neil Vaughn

Rustom Merwan Billimoria

Karl W Plumlee

John K Pierce

Frank F Tao

Douglas B King

Sioma Zaczepinski

An apparatus and process are described in which a plurality of preloaded catalyst samples tubes can be serially and automatically moved from a support to a reaction zone where each catalyst sample can be heated and a preheated reagent feed contacted with the sample and the effluent fed to a product collection and analysis system.

Catalyst testing apparatus and process

Coal, petroleum residuum and similar carbonaceous feed materials are subjected to hydroconversion in the presence of molecular hydrogen to produce a hydroconversion effluent which is then subjected to one or more separation steps to remove lower molecular weight liquids and produce a heavy bottoms stream containing high molecular weight liquids and unconverted carbonaceous material. The viscosity of the bottoms streams produced in the separation step or steps is prevented from increasing rapidly by treating the feed to the separation step or steps with ammonia gas prior to or during the separation step or steps. The viscosity of the heavy bottoms stream produced in the final separation step is also controlled by treating these bottoms with ammonia gas. In a preferred embodiment of the invention, the effluent from the hydroconversion reactor is subjected to an atmospheric distillation followed by a vacuum distillation and the feeds to these distillations are contacted with ammonia during the distillations.

Use of ammonia to reduce the viscosity of bottoms streams produced in

Growing community of inventors

Houston, TX, United States of America

Christopher G Lington