Integration of energy conversion units in indust. proc.: appl. pulp&paper

• Unité de recherche: OFEN
• Numéro de projet: 101082

Mots-clé (Allemand)

TP0080;F-Verfahrenstechnik

Description succincte (Allemand)

Integration of advanced energy conversion technolies (cogeneration, biomass conversion, heat pumps) and the integration of a process within an eco-industrial cluster

Publications / Résultats (Anglais)

This report measures the actions performed in 2006 and the actions planned for 2007 within the framework of the project Efficient Energy Conversion in the Pulp and Paper Industry. In addition to the data reconciliation models of the steam and condensate networks and of the process of Borregaard Schweiz a.g, process models have been developed with the goal of defining the heat requirements of the process. The combination of utility system data reconciliation with the process models allows to considerably reduce the need for detailed process modelling and for on-site data collection and measurement. A systematic definition of the hot and cold streams in the process has been developed in order to compute the minimum energy requirement of the process. The process requirements have been defined using the dual representation concept where the energy requirement of the process unit operations are systematically analysed from their thermodynamic requirement and the way they are satisfied by the technology that implements the operation. Corresponding to the same energy requirement but realised with different temperature allows on one hand to define the exergy efficiency of the heat transfer system in each of the process unit operations and to identify possible energy savings by heat exchange in the system. The analysis has been completed by the definition of the possible energy recovery from waste streams. The minimum energy requirement of the process using the different requirement representation has been realised and the analysis of the energy savings opportunities is now under preparation. This new step will first concern the definition of the utility system integration and the systematic analysis of the energy savings opportunities followed by the techno-economic evaluation of the most profitable energy savings options in the process.

Auftragnehmer/Contractant/Contraente/Contractor:


Autorschaft/Auteurs/Autori/Authors:
Marechal,François
Marechal,François

Documents annexés

• Efficient Energy Conversion in the Pulp and Paper Industry - Annual Report [PDF] 346 kB
• Efficient Energy Conversion in the Pulp and Paper Industry: Application to a Sulfite Wood Pulping Process [PDF] 1'266 kB