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:
Aug. 04, 2020
Filed:
Mar. 08, 2018
Board of Trustees of Michigan State University, East Lansing, MI (US);
Venkatesh Balan, Sugarland, TX (US);
Leonardo da Costa Sousa, Okemos, MI (US);
BOARD OF TRUSTEES OF MICHIGAN STATE UNIVERSITY, East Lansing, MI (US);
Abstract
A method to convert at least a majority of native cellulose Ito cellulose IIIin pretreated or untreated densified biomass is disclosed. The densified biomass (cellulosic or lignocellulosic) is pretreated with anhydrous liquid ammonia or liquid ammonia comprising a solution of at least 80% ammonia. The pretreating can be performed at a temperature from about 4° C. to about 140° C. and a pressure from about 14.7 to about 200 psi. In one embodiment, the densified cellulosic converting pretreatment process is followed by lignin extraction (LE). The total moisture content of the densified biomass and the solution is 30% or less and a weight ratio of liquid ammonia to the densified biomass is from about 0.3:1 to about 2:1. Various products and systems are also disclosed.