The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 09, 2000
Filed:
Apr. 28, 1998
Terry L Goolsby, Katy, TX (US);
Kellogg Brown & Root, Inc., Houston, TX (US);
Abstract
This process controls the magnetic separation of high metals catalyst by influencing the magnetic susceptibility by carbon levels on catalyst. In an FCC/RCC.RTM. operation employing magnetic separation of catalyst, particularly where the catalyst has enough metals to exhibit a high magnetic susceptibility, e.g., 110.times.10.sup.-6 emu/g or higher, all of the catalyst may be attracted to the magnet and go to the magnetic reject side. By controlling the amount of carbon, coke, or graphite present on the catalyst after partial regeneration, the magnetic properties of the catalyst can be diminished and separation can occur. Varying the amount of carbon affects the magnetic metals, the higher the magnetic susceptibility, and yet the catalyst particles will have a lower carbon level. The lower the magnetic susceptibility, the less metals, the higher the activity, and the higher the coke/carbon content.