Exergy evaluation of renewable use in the pulp and paper industry

Papermaking industry has energy-intensive installations that consume high amounts of energy but at the same time produce steam and electrical power on site by use of regenerative fuels. Black liquor and bark result from the technological. These renewable sources usually are burnt to recover chemicals and energy. In this paper there is presented a methodology for evaluation of renewable use in the pulp and paper industry. After that, there are presented numerical results from a pulp and paper mill, standing out fuel saving and reduction of pollution cost.