Oxy-Kraft recovery boiler - Towards novel integrated green energy parks

Kraft recovery boilers, i.e., boilers burning pulping industry spent liquor (black liquor) and recovering pulping chemicals, generate both electricity and heat. Black liquor is the most important biomass-based energy source worldwide.

This project aims to develop a new technical solution to burn the black liquor in oxy-combustion mode, resulting in opportunities to integrate the process for efficient CO2 capture and fuel production.

To achieve the goals, laboratory experiments on chemical details of black liquor behavior, corrosion and material selection, kinetic modeling of emissions, CFD modeling of various processes, techno-economical aspects of the integrated processes, and process design will be carried out.

The project contributes to the TRI6 module of the CETP programme by enabling i) the removal of carbon emissions from the carbon cycle-negative CO2 emissions, ii) the integration of energy and resource-efficient industrial energy systems iii) carbon capture for product use.