Weyerhaeuser Company Limited

Chevron U.s.a. Inc.

Mengkui Luo

James E., II Sealey

W. Harvey Jr. Persinger

Kent Robarge

Kent Douglas Robarge

James E Sealey, Ii

W Harvey Persinger, Jr

Ii Sealey James E

W Harvey Jr Persinger

Benjamin Levie

Alex Coulthard

Daniel Euhus

Paul Spindler

The present disclosure provides methods to transfer a pressurized slurry of plant-based biomass into a reactor vessel. The methods allow for the transfer of practical-sized pieces of biomass in a slurry pressurized to above about 300 psi.

High pressure feeding system for a liquid-based biomass to liquid reactor

The use of low specific gravity wood from thinning operations, for example, will produce a lower brownstock viscosity for a given kappa number target. A differential of 200-cP falling ball pulp viscosity has been detected from Kraft cooks of low and high specific gravity wood. Using low specific gravity wood can reduce the bleach stage temperature and the chemical dose needed in the bleach plant to produce lyocell pulp specifications. Low specific gravity wood also increases the ability to reduce pulp viscosity to very low levels without increasing the copper number of the pulp or the concentration of carbonyl in the pulp above acceptable levels.

Use of thinnings and other low specific gravity wood for lyocell pulps method

Use of thinnings and other low specific gravity wood for lyocell products

Use of thinnings and other low specific gravity wood for lyocell products method

Use of thinnings and other low specific gravity wood for lyocell pulps

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Sumner, WA, United States of America

Kent Douglas Robarge