Abstract: A system and method for hardwood pulp liquid hydrolysate conditioning includes a first evaporator receives a hardwood mix extract and outputting a quantity of vapor and extract. A hydrolysis unit receives the extract, hydrolyzes and outputs to a lignin separation device, which separates and recovers a quantity of lignin. A neutralization device receives extract from the lignin separation device and a neutralizing agent, producing a mixture of solid precipitate and a fifth extract. The solid precipitate is removed from the fifth extract. A second evaporator removes a quantity of acid from the fifth extract in a vapor form. This vapor may be recycled to improve total acid recovery or discarded. A desalination device receives the diluted extract, separates out some of the acid and salt and outputs a desalinated solution.
Type:
Grant
Filed:
November 13, 2013
Date of Patent:
June 30, 2015
Assignees:
Red Shield Acquisition, LLC, University of Maine System Board of Trustees
Inventors:
Darrell Waite, Richard Arnold, James St. Pierre, Hemant P. Pendse, William H. Ceckler
Abstract: A system and method for hardwood pulp liquid hydrolysate conditioning includes a first evaporator receives a hardwood mix extract and outputting a quantity of vapor and extract. A hydrolysis unit receives the extract, hydrolyzes and outputs to a lignin separation device, which separates and recovers a quantity of lignin. A neutralization device receives extract from the lignin separation device and a neutralizing agent, producing a mixture of solid precipitate and a fifth extract. The solid precipitate is removed from the fifth extract. A second evaporator removes a quantity of acid from the fifth extract in a vapor form. This vapor may be recycled to improve total acid recovery or discarded. A desalination device receives the diluted extract, separates out some of the acid and salt and outputs a desalinated solution.
Type:
Application
Filed:
November 13, 2013
Publication date:
March 6, 2014
Applicants:
University of Maine System Board of Trustees, Red Shield Acquisition, LLC
Inventors:
Darrell Waite, Richard Arnold, James St. Pierre, Hemant P. Pendse, William H. Ceckler
Abstract: A system and method for hardwood pulp liquid hydrolysate conditioning includes a first evaporator receives a hardwood mix extract and outputting a quantity of vapor and extract. A hydrolysis unit receives the extract, hydrolyzes and outputs to a lignin separation device, which separates and recovers a quantity of lignin. A neutralization device receives extract from the lignin separation device and a neutralizing agent, producing a mixture of solid precipitate and a fifth extract. The solid precipitate is removed from the fifth extract. A second evaporator removes a quantity of acid from the fifth extract in a vapor form. This vapor may be recycled to improve total acid recovery or discarded. A desalination device receives the diluted extract, separates out some of the acid and salt and outputs a desalinated solution.
Type:
Grant
Filed:
July 21, 2011
Date of Patent:
December 17, 2013
Assignees:
Red Shield Acquisition, LLC, University of Maine System Board of Trustees
Inventors:
Darrell M. Waite, Richard Arnold, James St. Pierre, Hemant P. Pendse, William H. Ceckler