Licella Pty Limited

Canfor Pulp Ltd.

Noranda Forest Inc.

Martin William Pudlas

Leonard James Humphreys

William Neil Rowlands

Victor Charles Uloth

James Allan Spankie

Paul Andrew Watson

Robert William Clayton Thew

Patrick Jean-Claude Tessier

Martin Savoie

Robert William Thew

This disclosure pertains to the use of black liquors from kraft pulp mills as a source of catalysts for the thermochemical conversion of organic matter feedstocks to bio oils. More particularly, some embodiments pertain to integrated kraft pulp mill and thermochemical conversion systems, which include: a Kraft pulp mill comprising a digester for digesting a lignocellulosic material with white liquor to produce pulp and black liquors; a thermochemical conversion subsystem comprising: at least one mixing tank for combining pulping liquors received from the pulp mill with an organic matter feedstock and water to produce a reaction mixture; a reactor vessel for treating the reaction mixture received from the mixing tank at a reaction temperature and pressure suitable for conversion of all or a portion of the organic matter in the reaction mixture into a product mixture comprising a bioproduct and an aqueous stream containing both organic and inorganic compounds; and a depressurizer for depressurizing product mixture received from the reactor vessel; and one or more conveyors for conveying the pulping liquors from the pulp mill to the mixing tank.

Integrated kraft pulp mill and thermochemical conversion system

Integrated Kraft pulp mill and thermochemical conversion system

A method for controlling the addition of bleaching/delignifying reagents to obtain a substantially constant percentage of pulp delignification across the first bleaching stage. The present method allows substantial improvements in bleached pulp quality through proper addition of the bleaching/delignifying reagent flow rate. The efficiency of the bleaching/delignifying reagent is therefore greatly improved. Further, reduction of pulp off-grades, equipment corrosion and effluent loading are additional beneficial effects resulting from the present method.

Method and system for controlling the addition of bleaching reagents to

Growing community of inventors

Prince George, Canada

Martin William Pudlas