Conference article

The energy situation in both process industries and power plants is changing and it is of interest to investigate new polygeneration solutions combining production of chemicals with the production of power and heat. Examples of such chemicals are methane, hydrogen, and methanol etc. Integration of gasification into chemical recovery systems in the pulp and paper production systems and into the combined heat and power (CHP) systems in power plant applications are among the possible polygeneration systems. It is also interesting to look at the potential to introduce combined cycles with gas turbines and steam turbines as a complement. To perform such analysis, it is important to have relevant input data on what gas composition we can expect from running different type of feed stock. In this paper, we focus on the wood pellets. Experimental results are correlated into partial least squares models to predict major composition of the synthesis gas produced under different operating conditions. The quality prediction models then are combined with physical models using Modelica for investigation of dynamic energy and material balances for large plants. The data can also be used as input to analysis using e.g. ASPEN plus and similar system analysis tools.

wood pellets, gasification, CHP, Modelica, methane, hydrogen