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Efficient Cleaning and Heat Recovery of Flue Gas from a Small‐Scale Boiler
Author(s) -
Darbandi Tayebeh,
Risberg Mikael,
Westerlund Lars
Publication year - 2021
Publication title -
chemical engineering and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.403
H-Index - 81
eISSN - 1521-4125
pISSN - 0930-7516
DOI - 10.1002/ceat.202100274
Subject(s) - flue gas , boiler (water heating) , scrubber , wet scrubber , heat exchanger , waste management , chemistry , exhaust gas , waste heat recovery unit , particulates , heat recovery ventilation , environmental science , environmental engineering , engineering , mechanical engineering , organic chemistry
Small‐scale biomass boilers contribute to the emission of particulate matter (PM) to the environment. In this study, the performance of a wet‐scrubber purification system for flue gas was experimentally investigated. The experimental setup consisted of a boiler, a wet scrubber, a generator, and heat exchangers. The results showed an average PM collection efficiency of ca. 42 % for a PM size range of 0.08–10 µm over a testing period of five months. Furthermore, the results showed an improvement in the heat recovery of about 18 %. Focusing only on the heat losses through exhaust flue gases, the losses were shown to have decreased by 72 %. During the total testing period of 8.5 months, no decrease could be noticed in the absorption solution ability.