An analysis of water management in Brazilian petroleum refineries using rationalization techniques

This study assesses the application of rationalization techniques in oil refineries to preserve freshwater resources. These techniques include conservation, recycling and reuse of water and Pinch technique. Several refineries in the world use treated household wastewater. In Brazil, a country with expanding refining capacity, this practice is planned for two refineries. Water conservation and recycling initiatives also hold promise, including reduction of losses, replacement of cooling towers with smaller units and recycling of blowdown into cooling towers and steam generation systems. Some technologies gain importance for wastewater reuse, such as ion exchange, nanofiltration and advanced oxidative processes. Finally, the application of the Pinch technique reduces the withdrawal of water and its associated costs. Thus, this method is appropriate in areas with scarce water, where some new Brazilian refineries are slated for construction.

► This work studies water management in petroleum refineries through rationalization techniques. ► The prospects for water rationalization in petroleum refineries are analyzed. ► The application of the water pinch technique in Brazilian greenfield refineries are discussed. ► Alternative technologies for water reuse in refineries are discussed.