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ASPI News, Paper360º November/December 2015
ASPI News, Paper360º November/December 2015
Journal articles
Effect of feedstock moisture content on biomass boiler operation, TAPPI JOURNAL October 2015
Effect of feedstock moisture content on biomass boiler operation, TAPPI JOURNAL October 2015
Journal articles
Pyrolysis of hardwood soda-anthraquinone spent pulping liquor, TAPPI JOURNAL October 2015
Pyrolysis of hardwood soda-anthraquinone spent pulping liquor, TAPPI JOURNAL October 2015
Journal articles
Examination of the potential to reduce water application rates in pine wet decks, TAPPI JOURNAL October 2015
Examination of the potential to reduce water application rates in pine wet decks, TAPPI JOURNAL October 2015
Journal articles
Cold Blow Batch Cooking Plus Medium Consistency Oxygen: Heat
Cold Blow Batch Cooking Plus Medium Consistency Oxygen: Heat Exchanger Placement, 1993 Engineering Conference Proceedings
Journal articles
Hydrodynamics of the Forming Section: The Origin of Nonunifo
Hydrodynamics of the Forming Section: The Origin of Nonuniform Fiber Orientation, 1994 Engineering Conference Proceedings
Journal articles
Machine Vision Applications Using Binary and Grayscale Morph
Machine Vision Applications Using Binary and Grayscale Morphology, 1994 Engineering Conference Proceedings
Journal articles
Model to Predict the Precipitation of Burkeite in the Multip
Model to Predict the Precipitation of Burkeite in the Multiple Effect Evaporator and Techniques for Controlling Scaling, 1995 Engineering Conference Proceedings
Journal articles
Liquor-To-Liquor Differences in Combustion and Gasification
Liquor-To-Liquor Differences in Combustion and Gasification Processes: Nitrogen Oxide Formation Tendency, 1995 Engineering Conference Proceedings
Journal articles
Magazine articles
Pilot scale black liquor concentration using pressure driven membrane separation, TAPPI Journal April 2023
ABSTRACT: Black liquor concentration using pressure driven membrane separation has long been proposed as a means of achieving energy savings and breaking production bottlenecks. To date, limitations in membrane performance and stability under black liquor process conditions have prevented those promises from being realized out-side of tightly controlled laboratory settings. In this work, we describe the first successful pilot scale field deployments of a membrane system for black liquor concentration. Using a purpose-built system and commercial sized, spiral wound graphene oxide membrane elements, we have logged nearly 6000 h of runtime across deployments to multiple mill sites. We demonstrate concentration of black liquor from 14% to >20% total solids, while generating permeate water comparable in quality to that of evaporator condensate and an 81% reduction in energy consumption relative to evaporation. At a commercial scale, these results translate to $2 M/year in net energy savings for a typical mill, as well as an opportunity to support production increases or mill expansions. These results represent a significant leap forward in the ability of membrane systems to deliver substantial value via black liquor concentration.