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Performance of flue gas quench and its influence on biomass fueled CHP
Malardalen Univ, Sch Business Soc & Engn, SE-72123 Vasteras, Sweden..ORCID iD: 0000-0002-6279-4446
Malardalen Univ, Sch Business Soc & Engn, SE-72123 Vasteras, Sweden.;Tianjin Univ Commerce, Key Lab Refrigerat Technol Tianjin, Tianjin 300134, Peoples R China..
KTH, School of Engineering Sciences in Chemistry, Biotechnology and Health (CBH), Chemical Engineering. Vattenfall AB, SE-16992 Stockholm, Sweden..
Malardalen Univ, Sch Business Soc & Engn, SE-72123 Vasteras, Sweden..ORCID iD: 0000-0002-4932-7368
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2019 (English)In: Energy, ISSN 0360-5442, E-ISSN 1873-6785, Vol. 180, p. 934-945Article in journal (Refereed) Published
Abstract [en]

For biomass/waste fueled power plants, stricter regulations require a further reduction of the negative impacts on the environment caused by the release of pollutants and withdrawal of fresh water externally. Flue gas quench (FGQ) is playing an important role in biomass or waste fueled combined heat and power (CHP) plants, as it can link the flue gas (FG) cleaning, energy recovery and wastewater treatment. Enhancing water evaporation can benefit the concentrating of pollutant in the quench water; however, when FG condenser (FGC) is not in use, it results in a large consumption of fresh water. In order to deeply understand the operation of FGQ a mathematic model was developed and validated against the measurements. Based on simulation results key parameters affecting FGQ have been identified, such as the flow rate and temperature of recycling water and the moisture content of FG. A guideline about how to reduce the discharge of wastewater to the external and the withdrawal of external water can be proposed. The mathematic model was also implemented into an ASPEN Plus model about a CHP plant to assess the impacts of FGQ on CHP. Results show that when the FGC was running, increasing the flow rate and decreasing the temperature of recycling water can result in a lower total energy efficiency.

Place, publisher, year, edition, pages
Elsevier, 2019. Vol. 180, p. 934-945
Keywords [en]
Flue gas cleaning, Flue gas quench, Biomass and waste fueled CHP, Water balance, Energy efficiency
National Category
Energy Systems
Identifiers
URN: urn:nbn:se:kth:diva-255365DOI: 10.1016/j.energy.2019.05.078ISI: 000474315800074Scopus ID: 2-s2.0-85067066514OAI: oai:DiVA.org:kth-255365DiVA, id: diva2:1339564
Conference
International Conference on Energy, Ecology and Environment (ICEEE) / International Conference on Electric and Intelligent Vehicles (ICEIV), NOV 21-25, 2018, Swinburne Univ Technol, Melbourne, AUSTRALIA
Note

QC 20190730

Available from: 2019-07-30 Created: 2019-07-30 Last updated: 2019-07-30Bibliographically approved

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Yan, Jinying

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