Design and Performance Analysis of a Small-Scale Prototype Water Condensing System for Biomass Combustion Flue Gas Abatement

Valentina Coccia (), Ramoon Barros Lovate Temporim, Leandro Lunghi, Oleksandra Tryboi, Franco Cotana, Anna Magrini, Daniele Dondi, Dhanalakshmi Vadivel, Marco Cartesegna and Andrea Nicolini
Additional contact information
Valentina Coccia: CIRIAF/CRB Centro Interuniversitario di Ricerca sull’Inquinamento e l’Ambiente “M. Felli”, Via G. Duranti, 63, 06125 Perugia, Italy
Ramoon Barros Lovate Temporim: CIRIAF/CRB Centro Interuniversitario di Ricerca sull’Inquinamento e l’Ambiente “M. Felli”, Via G. Duranti, 63, 06125 Perugia, Italy
Leandro Lunghi: Engineering Department, UNIPG—University of Perugia, Via G. Duranti, 93, 06125 Perugia, Italy
Oleksandra Tryboi: CIRIAF/CRB Centro Interuniversitario di Ricerca sull’Inquinamento e l’Ambiente “M. Felli”, Via G. Duranti, 63, 06125 Perugia, Italy
Franco Cotana: CIRIAF/CRB Centro Interuniversitario di Ricerca sull’Inquinamento e l’Ambiente “M. Felli”, Via G. Duranti, 63, 06125 Perugia, Italy
Anna Magrini: Civil Engineering and Architecture Department, UNIPV—University of Pavia, Via Ferrata 3, 27100 Pavia, Italy
Daniele Dondi: Chemistry Department, UNIPV—University of Pavia, Viale Taramelli 12, 27100 Pavia, Italy
Dhanalakshmi Vadivel: Chemistry Department, UNIPV—University of Pavia, Viale Taramelli 12, 27100 Pavia, Italy
Marco Cartesegna: Independent Researcher, 27100 Pavia, Italy
Andrea Nicolini: CIRIAF/CRB Centro Interuniversitario di Ricerca sull’Inquinamento e l’Ambiente “M. Felli”, Via G. Duranti, 63, 06125 Perugia, Italy

Sustainability, 2024, vol. 16, issue 12, 1-15

Abstract: This article outlines the design and performance of a flue gas condensation system integrated with a biomass combustion plant. The system comprises a biomass plant fuelled by wood chips, generating flue gases. These gases are condensed via a double heat exchanger set-up, extracting water and heat to reduce concentrations of CO, CO 2 , and NO x while releasing gases at a temperature close to ambient temperature. The 100 kW biomass plant operates steadily, consuming 50 kg of wood chips per hour with fuel energy of 18.98 MJ/kg. Post combustion, the gases exit at 430 °C and undergo two-stage cooling. In the first stage, gases are cooled in a high-temperature tube heat exchanger, transferring heat to air. They then enter the second stage, a flue gas/water heat exchanger, recovering sensible and latent thermal energy, which leads to water condensation. Flue gas is discharged at approximately 33 °C. Throughout, parameters like the flue gas temperatures, mass flow, fuel consumption, heat carrier temperatures, and water condensation rates were monitored. The test results show that the system can condense water from flue gas at 75 g/min at 22 °C while reducing pollutant emissions by approximately 20% for CO 2 , 19% for CO, 30% for NO, and 26% for NOx.

Keywords: flue gas condensing system; atmospheric pollutant mitigation; biomass combustion plant (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2024
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