Exxonmobil Research and Engineering Company

Pall Corporation

Tore H Lindstrom

Stephen A Geibel

Eric Bart Sirota

Michael B Whitlock

James William Gleeson

Charles L Baker

Mark F Hurwitz

Min Chang

David Mentzer

John E Gallagher, Jr

Dennis A Gaal

Kurt R Schuttenberg

Norman G Cathcart

An arrangement for removing entrained catalyst particulates from a gas may include a pressure vessel, a filter assembly, and a dip leg. The pressure vessel may contain a fluidized bed of catalyst particulates suspended in the gas. Some of the gas and entrained catalyst particulates may be directed to the filter assembly where the entrained catalyst particulates are filtered from the gas by a filter medium. The catalyst particulates pass generally tangentially along a feed side of the filter medium, where they scour the feed side of the filter medium, and then pass into the dip tube which guides the catalyst particulates away from the filter medium.

Arrangements for removing entrained catalyst particulates from a gas

The present invention is a process for removing waxy haze from and improving the filterability of base stocks including heavy mineral oil base stocks, gas-to-liquids (GTL) and hydrodewaxed or hydroisomerized waxy feed basestocks by filtering the waxy haze causing particles out of the base stock employing a filter characterized by a high surface area of pores accessible to the haze wax particles which have particles dimensions of no more than about 5 microns.

Method for haze mitigation and filterability improvement for base stocks

Growing community of inventors

Tully, NY, United States of America

Tore H Lindstrom