CEM - Abstract

Abstract Information :

Monitoring of gaseous streams from industrial processes can help to identify problems related to the energy efficiency of the process and the necessity of prevention of the release of pollutants into the atmosphere. This contribution describes the challenges associated with the monitoring of complex industrial streams faced in research activities under the iWAYs project. The project aims to recover resources present in atmospheric emissions associated with industrial processes. These resources include raw materials, water and energy. The industrial processes studied in the iWAYs project belong to the ceramics, chemical and steel sector. These three sectors, the stages of the process studied, work under batch or semicontinuous conditions and, the exhaust gases contain a number of recoverable resources. The technology used for resource recovery is based on the use of state-of-the-art heat exchangers, specifically the use of HPCE (Heat Pipe Condensing Economiser). The design of HPCEs, under the operating conditions mentioned before, requires a carefully characterisation of the exhaust streams to be treated, and this characterisation is specific for each process and streams studied. The present work includes the monitoring methods applied and results obtained in the three case studies when performing the experimental campaigns. The challenges faced have been to characterise gaseous streams from drying processes with high humidity levels with temperatures close to the dew point and the presence of high concentration levels of solid and/or acid pollutants. Other relevant finding from the campaigns performed has been the identification of those relevant parameters that should be monitored online to ensure the environment protection associated to the recovery technology (HPCE).