Chalmers University of Technology Göteborg, Sverige

The Pulp and Paper industry makes up a considerable share of Swedish industrial activities and Södra Cell is one of the major Pulp mill operators with three large mills in southern Sweden: Mörrum, Värö och Mönsterås. Pulp mills combust considerable amounts of biomass to generate the heat needed to power the processes. Three furnaces are in operation at the mill: a kiln, a recovery boiler, and a steam boiler. Combustion processes generates NOx that is harmful for the environment once emitted. Historically, industrial plants, like pulp mills, have had lower demands on emission control than for example heat and power plants or transportation. However, industrial plants are now facing increasing demands from controlling agencies to reduce their emissions.

This work will map and evaluate the possibilities for Södras mill at Mönsterås for introducing NOx reducing measures with focus on a new technique for simultaneous absorption of NOx and SOx from the recovery boiler and on primary measures, i.e. design of the biomass burner, for the kiln. The steam boiler is not considered as it is a relatively small emission source. Other emission control technologies, like SNCR and SCR, will be review for comparison.

The Division of Energy Technology at Chalmers have long experience of modelling and designing processes for both the absorption process and burner design that will be applied by you to the conditions of the discussed pulp mills. Your supervisor at Södra has good process knowledge and the necessary contact to supply the process data needed.

Kontakt
Fredrik Normann 
normann@chalmers.se
031-7721486

Send CV and transcript of courses completed to Fredrik Normann normann@chalmers.se

Supervisor
Jakob Johansson, Chalmers
Jenny Larfeldt, Södra Cell