The Lignoboost Process & Use of Lignin as a New Bio-Fuel, 2009 TAPPI Engineering, Pulping, Environmental Conference

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A process for lignin removal from alkaline pulping liquors (black liquors) has been developed further in the FRAM2 R&D Program (Future Resource Adapted Pulp Mill, part 2). The lignin product from a demonstration plant, which is owned and operated by Innventia (formerly STFI-Packforsk), was characterized and used in different combustion trials with good results – a co-firing of lignin and bark in a fluidized bed boiler, a co-firing with coal in a PFBC boiler (Pressurized Fluidized Bed Combustion boiler) and a firing of lignin in a full-scale lime kiln. The process development and operation of the demonstration plant has displayed good results in many ways since 2007. Runnability in the demonstration plant and the lignin quality have both been very good. Work done on the investment and operational costs showed great potential for improving the concept of economy, which is already good.