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:
Sep. 06, 2022
Filed:
Sep. 13, 2019
Energy, United States Department of, Washington, DC (US);
Ranjani Siriwardane, Morgantown, WV (US);
Jarrett Riley, Morgantown, WV (US);
Energy, United States Department of, Washington, DC (US);
Abstract
This disclosure provides a method to produce highly attrition resistant pellets by encapsulating reactive components in a vitrified clay outer layer. The reactive component mixture is present relative to the clay substrate in a weight ratio of part per 60-100 part to about 60 parts of the clay substrate. The reactive components are agglomerated first, and clay substrate is added to form the outer layer of the pellet. The pellets are calcined at temperatures above 1200 C to form a vitrified clay semi porous outer layer providing high strength to the pellet while facilitating the gas transfer for the reaction with the encapsulated reactive components. Pellets containing CuO—FeO-alumina oxygen carrier for chemical looping combustion of fuel demonstrated high attrition resistance and high reactivity with methane.