Patrik Yrjas

Senior Lecturer, Process Chemistry
Email: patrik.yrjas@abo.fi
Mobile: +358-469219021
Phone: +358-2-2154453


Peer-reviewed publications

A1 Journal article (refereed)
Pre‑oxidation as a Means to Increase Corrosion Resistance of Commercial Superheater Steels (2019)
Juho Lehmusto, Patrik Yrjas, Leena Hupa
Oxidation of Metals
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A1 Journal article (refereed)
Ash melting behaviour of wheat straw blends with wood and reed (2018)
Siim Link, Patrik Yrjas, Leena Hupa
Renewable Energy
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A1 Journal article (refereed)
Catalytic effect of oil shale ash on CO2 gasification of leached wheat straw and reed chars (2018)
Siim Link, Khanh-Quang Tran, Quang-Vu Bach, Patrik Yrjas, Daniel Lindberg, Stelios Arvelakis, Argo Rosin
Energy
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A1 Journal article (refereed)
Defluidization of the oxygen carrier ilmenite – Laboratory experiments with potassium salts (2018)
Maria Zevenhoven, Christoffer Sevonius, Patrik Salminen, Daniel Lindberg, Anders Brink, Patrik Yrjas, Leena Hupa
Energy
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A4 Conference proceedings
Experimental and modeling approaches to simulate temperature-gradient induced intradeposit chemical processes with implications for biomass boiler corrosion (2018)
Daniel Lindberg, Jonne Niemi, Markus Engblom, Tor Laurén, Patrik Yrjas, Mikko Hupa
The Korean Institute of Chemical Engineers (KIChE)
A4 Conference proceedings
Influence of fuel pre-treatments on ash-forming elements and implications on corrosion (2018)
Patrik Yrjas, Michiel Carbo, Arno Janssen, Pedro Abelha, Timo Leino, Leena Hupa
The Korean Institute of Chemical Engineers (KIChE)
A4 Conference proceedings
Thermal Separation and Leaching of Valuable Elements from Waste-Derived Ashes (2018)
Daniel Lindberg, Emil Vainio, Patrik Yrjas
Springer
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A1 Journal article (refereed)
Applicability of ToF-SIMS and stable oxygen isotopes in KCl-induced
corrosion studies at high temperatures
(2017)
Juho Lehmusto, Mikael Bergelin, Jingxin Sui, Jyrki Juhanoja, Bengt-Johan Skrifvars, Patrik Yrjas
Corrosion Science
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A4 Conference proceedings
Causes of low-temperature corrosion in CFB combustion of bituminous coal (2017)
Emil Vainio, Tor Laurén, Patrik Yrjas, Mikko Hupa, Edgardo Coda Zabetta, Kyösti Vänskä
A4 Conference proceedings
Defluidization of ilmenite, an oxygen carrier for chemical looping combustion – laboratory experiments with potassium salts (2017)
Maria Zevenhoven, Christoffer Sevonius, Patrik Salminen, Daniel Lindberg, Anders Brink, Patrik Yrjas, Leena Hupa
San Diego State University
A1 Journal article (refereed)
Deposit build-up and corrosion in a copper flash smelting heat recovery boiler (2017)
Juho Lehmusto, Daniel Stenlund, Mari Lindgren, Patrik Yrjas
Oxidation of Metals
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A4 Conference proceedings
Detailed high-temperature corrosion investigations under well-defined conditions (2017)
Patrik Yrjas, Juho Lehmusto, Dorota Bankiewicz, Jonne Niemi, Mikael Bergelin, Markus Engblom, Daniel Lindberg, Leena Hupa
Adria Section of the Combustion Institue (ASCI)
A1 Journal article (refereed)
High-temperature corrosion due to lead chloride mixtures simulating fireside deposits in boilers firing recycled wood (2017)
Kinnunen H, Lindberg D, Lauren T, Uusitalo M, Bankiewicz D, Enestam S, Yrjas P
Fuel Processing Technology
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A1 Journal article (refereed)
The effect of temperature on the formation of oxide scales regarding commercial superheater steels (2017)
J. Lehmusto, D. Lindberg, P. Yrjas, L. Hupa
Oxidation of Metals
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A1 Journal article (refereed)
The influence of flue gas temperature on lead chloride induced high temperature corrosion (2017)
Hanna Kinnunen Merja Hedman, Markus Engblom, Daniel Lindberg, Mikko Uusitalo, Sonja Enestam, Patrik Yrjas
Fuel
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A4 Conference proceedings
Capture of harmful gaseous KCl with coal fly ash under conditions typical for fluidized beds (2016)
Patrik Yrjas, Daniel Lindén, Christoffer Sevonius, Leena Hupa
Curran Associates Inc.
A1 Journal article (refereed)
Effect of temperature gradient on composition and morphology of synthetic chlorine-containing biomass boiler deposits (2016)
Daniel Lindberg, Jonne Niemi, Markus Engblom, Patrik Yrjas, Tor Laurén, Mikko Hupa
Fuel Processing Technology
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A1 Journal article (refereed)
Low-temperature corrosion in co-combustion of biomass and solid recovered fuels (2016)
Emil Vainio, Hanna Kinnunen, Tor Laurén, Anders Brink, Patrik Yrjas, Nikolai DeMartini, Mikko Hupa
Fuel
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A1 Journal article (refereed)
Sulfation of alkali halides in a bench-scale bubbling fluidized bed reactor (2016)
Hao Wu, Patrik Yrjas, Pasi Vainikka, Daniel Lindberg, Mikko Hupa
Fuel
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A4 Conference proceedings
Agglomeration mechanisms in a laboratory bubbling fluidized bed due to addition of different phosphate compounds (2015)
Sevonius Christoffer, Yrjas Patrik, Lindberg Daniel, Hupa Mikko
Åbo Akademi
A1 Journal article (refereed)
High temperature corrosion of thermally sprayed NiCr and FeCr coatings covered with a KCl-K₂SO₄ salt mixture (2015)
T. Varis, D. Bankiewicz, P. Yrjas, M. Oksa, T. Suhonen, S. Tuurna, K. Ruusuvuori, S. Holmström
Surface and Coatings Technology
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A1 Journal article (refereed)
Laboratory studies of potassium-halide-induced high-temperature corrosion of superheater steels. Part 2: Exposures in wet air (2015)
Hao Wu, Dorota Bankiewicz, Patrik Yrjas, Mikko Hupa
Energy and Fuels
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A4 Conference proceedings
Low temperature corrosion in co-combustion of biomass and solid recovered fuels (2015)
Emil Vainio, Hanna Kinnunen, Tor Laurén, Anders Brink, Patrik Yrjas, Nikolai DeMartini, Mikko Hupa
Instituto Superior Técnico
A4 Conference proceedings
Sulfuric acid induced dew point corrosion in BFB combustion of biomass? (2015)
Emil Vainio, Tor Laurén, Hanna Kinnunen, Patrik Yrjas, Anders Brink, Mikko Hupa
Åbo Akademi
A4 Conference proceedings
The effect of oxide layer thickness and morphology on KCl-induced corrosion at elevated temperatures (2015)
Juho Lehmusto, Patrik Yrjas, Mikko Hupa
A1 Journal article (refereed)
The effect of pretreatment on the corrosion resistance of superheater materials (2015)
Juho Lehmusto, Patrik Yrjas, Mikko Hupa
Solid State Phenomena
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A4 Conference proceedings
Changes in Composition of Superheater Deposits due to Temperature Gradients (2014)
Daniel Lindberg, Jonne Niemi, Markus Engblom, Patrik Yrjas, Tor Laurén, Mikko Hupa
EPRI
A1 Journal article (refereed)
Defluidization of a quartz bed - Laboratory experiments with potassium salts (2014)
Sevonius C, Yrjas P, Hupa M
Fuel
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A4 Conference proceedings
Influence of deposit aging on superheater corrosion (2014)
Daniel Lindberg, Markus Engblom, Patrik Yrjas, Tor Laurén, Johan Lindholm, Mikko Hupa
Suomen Soodakattilayhdistys / Finnish Recovery Boiler Committee
A4 Conference proceedings
Defluidization caused by potassium salts in a laboratory bubbling fluidized bed (2013)
Sevonius C, Yrjas P, Hupa M
A1 Journal article (refereed)
Determination of the corrosivity of Pb-containing salt mixtures (2013)
Bankiewicz D, Yrjas P, Lindberg D, Hupa M
Corrosion Science
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A1 Journal article (refereed)
Experimental studies of Zn and Pb induced high temperature corrosion of two commercial boiler steels (2013)
Bankiewicz D, Enestam S, Yrjas P, Hupa M
Fuel Processing Technology
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A1 Journal article (refereed)
Reed as a gasification fuel: a comparison with woody fuels (2013)
Link S, Kask Ü, Paist A, Siirde A, Arvelakis S, Hupa M, Yrjas P, Külaots I
Mires and Peat
A1 Journal article (refereed)
The fate of chlorine, sulfur, and potassium during co-combustion of bark, sludge, and solid recovered fuel in an industrial scale BFB boiler (2013)
Vainio E, Yrjas P, Zevenhoven M, Brink A, Laurén T, Hupa M, Kajolinna T, Vesala H
Fuel Processing Technology
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A4 Conference proceedings
Bed agglomeration due to the addition of KCl and K2CO3 - first results from a laboratory fluidized bed reactor (2012)
Patrik Yrjas, Christoffer Sevonius, Mikko Hupa
Springer
A1 Journal article (refereed)
High temperature corrosion of superheater steels by KCl and K2CO3 under dry and wet conditions (2012)
Lehmusto J, Yrjas P, Skrifvars BJ, Hupa M
Fuel Processing Technology
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A1 Journal article (refereed)
Studies on the Partial Reactions Between Potassium Chloride and Metallic Chromium Concerning Corrosion at Elevated Temperatures (2012)
Lehmusto J, Lindberg D, Yrjas P, Skrifvars BJ, Hupa M
Oxidation of Metals
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A1 Journal article (refereed)
Thermogravimetric studies of high temperature reactions between potassium salts and chromium (2012)
Lehmusto J, Lindberg D, Yrjas P, Skrifvars BJ, Hupa M
Corrosion Science
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A1 Journal article (refereed)
Bromine as an ash forming element in a fluidised bed boiler combusting solid recovered fuel (2011)
Vainikka P, Enestam S, Silvennoinen J, Taipale R, Yrjas P, Frantsi A, Hannula J, Hupa M
Fuel
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A1 Journal article (refereed)
Detailed Studies on the High Temperature Corrosion Reactions between Potassium Chloride and Metallic Chromium (2011)
Lehmusto J, Yrjas P, Skrifvars BJ, Hupa M
Materials Science Forum
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A1 Journal article (refereed)
Halide aerosols in circulating fluidised bed co-combustion. Role of coal bound kaolin (2011)
Vainikka P, Silvennoinen J, Taipale R, van Alphen C, Moilanen A, Falcon R, Yrjas P, Hupa M
Fuel Processing Technology
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A1 Journal article (refereed)
High temperature oxidation of metallic chromium exposed to eight different metal chlorides (2011)
Lehmusto J, Skrifvars BJ, Yrjas P, Hupa M
Corrosion Science
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A4 Conference proceedings
Recent laboratory work to explore chlorine-induced high temperature corrosion (2011)
J. Lehmusto, B.-J. Skrifvars, P. Yrjas, M. Hupa
Swerea KIMAB
A1 Journal article (refereed)
Role of ZnCl2 in High-Temperature Corrosion in a Bench-Scale Fluidized Bed Firing Simulated Waste Wood Pellets (2011)
Bankiewicz D, Alonso-Herranz E, Yrjas P, Lauren T, Spliethoff H, Hupa M
Energy and Fuels
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A1 Journal article (refereed)
Co-firing black liquor and biomass in a laboratory single droplet reactor - effects on emissions and combustion characteristics (2010)
Nikolai Demartini, Esperanza Monedero, Patrik Yrjas, Mikko Hupa
Tappi Journal
A1 Journal article (refereed)
Development and Application of a Short-Time Probe for Measuring Carryover in a Recovery Boiler (2010)
Vaha-Savo N, Yrjas P, Lauren T, Hupa M
Journal of Pulp and Paper Science
A1 Journal article (refereed)
Reactivity of the Biomass Chars Originating from Reed, Douglas Fir, and Pine (2010)
Link S, Arvelakis S, Hupa M, Yrjas P, Kulaots I, Paist A
Energy and Fuels
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A1 Journal article (refereed)
Reduction of superheater corrosion by co-firing risky biomass with sewage sludge (2010)
Aho M, Yrjas P, Taipale R, Hupa M, Silvennoinen J
Fuel
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A4 Conference proceedings
The effect of potassium chloride and potassium carbonate on the high temperature corrosion of 304L steel (2010)
Lehmusto Juho, Skrifvars Bengt-Johan, Yrjas Patrik, Hupa Mikko
N/A
N/A
A1 Journal article (refereed)
Cyclic Carbonation Calcination Studies of Limestone and Dolomite for CO2 Separation From Combustion Flue Gases (2009)
Senthoorselvan S, Gleis S, Hartmut S, Yrjas P, Hupa M
Journal of Engineering for Gas Turbines and Power
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A1 Journal article (refereed)
High-Temperature Corrosion of Superheater Tube Materials Exposed to Zinc Salts (2009)
Bankiewicz D, Yrjas P, Hupa M
Energy and Fuels
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A4 Conference proceedings
Cyclic carbonation and calcination studies of limestone and dolomite for CO2 separation from combustion flue gases (2008)
Senthoorselvan S, Gleis S, Hartmut S, Yrjas P, Hupa M
American Society of Mechanical Engineers, ASME
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A1 Journal article (refereed)
Effective new chemicals to prevent corrosion due to chlorine in power plant superheaters (2008)
Martti Aho, Pasi Vainikka, Raili Taipale, Patrik Yrjas
Fuel
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A1 Journal article (refereed)
Development and evaluation of a long-term deposit probe for on-line monitoring of deposit growth (2007)
Brink A, Lauren T, Yrjas P, Hupa M, Friesenbichler J
Fuel Processing Technology
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A1 Journal article (refereed)
Quantification of the release of inorganic elements from biofuels (2007)
Flemming J.Frandsen, Simone C.van Lith, Rob Korbee, Patrik Yrjas, Rainer Backman, Ingwald Obernberger, Thomas Brunner, Markus Jöller
Fuel Processing Technology
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A4 Conference proceedings
Chlorine in deposits during co-firing of biomass, peat, and coal in a full-scale CFBC boiler (2005)
Yrjas P, Skrifvars BJ, Hupa M, Roppo J, Nylund M, Vainikka P
American Society of Mechanical Engineers, ASME
A4 Conference proceedings
Optimizing ammonia injection in bio-fuelled CFBCs (2005)
Coda Zabetta E, Yrjas P, Hupa M, Roppo J, Nylund M
American Society of Mechanical Engineers, ASME
A4 Conference proceedings
The Abo Akademi database of ash behavior measurements in full-scale boilers (2005)
Skrifvars BJ, Yrjas P, Lauren T, Hupa M, Dittrich M
American Society of Mechanical Engineers, ASME
A1 Journal article (refereed)
The fouling behavior of rice husk ash in fluidized-bed combustion. 1. Fuel characteristics (2005)
Skrifvars BJ, Yrjas P, Kinni J, Siefen P, Hupa M
Energy and Fuels
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A1 Journal article (refereed)
The fouling behavior of rice husk ash in fluidized-bed combustion. 2. Pilot-scale and full-scale measurements (2005)
Skrifvars BJ, Yrjas P, Lauren T, Kinni J, Tran H, Hupa M
Energy and Fuels
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A4 Conference proceedings
The Åbo Akademi database - fuel characterization (2005)
Zevenhoven M, Yrjas P, Backman R, Skrifvars BJ, Hupa M
American Society of Mechanical Engineers, ASME
A4 Conference proceedings
Co-firing in FBC : a challenge for fuel characterization and modeling (2003)
Zevenhoven M, Skrifvars BJ, Yrjas P, Backman R, Mueller C, Hupa M
American Society of Mechanical Engineers, ASME
A4 Conference proceedings
Fireside deposit formation in biomass fired FBC : a comparison between tests performed in three significantly different sized combustors (2003)
Skrifvars BJ, Yrjas P, Hupa M, Aho M, Silvennoinen J, Eteläaho R, Kouki J, Saari K
American Society of Mechanical Engineers, ASME
A4 Conference proceedings
Searching for improved characterization of ash forming matter in biomass (2001)
Zevenhoven M, Skrifvars BJ, Yrjas P, Hupa M, Nuutinen L, Laitinen R
American Society of Mechanical Engineers, ASME


Other publications

D3 Professional conference proceedings
Deposit build-up and corrosion in a copper flash smelting heat recovery boiler (2016)
Juho Lehmusto, Daniel Stenlund, Mari Lindgren, Patrik Yrjas
D3 Professional conference proceedings
Utilization of stable oxygen isotopes in high-temperature corrosion studies (2016)
Juho Lehmusto, Jingxin Sui, Mikael Bergelin, Bengt-Johan Skrifvars, Patrik Yrjas
B3 Non-refereed conference proceedings
The effect of temperature on the protective oxide layers in Cr-containing steels (2014)
Juho Lehmusto, Patrik Yrjas, Mikko Hupa
The Iron and Steel Institute of Japan (Nippon Tekko Kyokai)
B3 Non-refereed conference proceedings
TOWARDS BETTER UNDERSTANDING OF TEMPERATURE GRADIENTS IN SUPERHEATER CORROSION (2014)
Markus Engblom, Daniel Lindberg, Patrik Yrjas, Jonne Niemi, Tor Laurén, Mikko Hupa

Institute of Process Engineering, Chinese Academy of Sciences
B3 Non-refereed conference proceedings
Corrosion behavior of superheater steels in the presence of potassium salts under conditions relevant to biomass combustion (2012)
Lehmusto Juho, Yrjas Patrik, Skrifvars Bengt-Johan, Hupa Mikko
N/A
N/A
B3 Non-refereed conference proceedings
The role of potassium in high temperature corrosion of superheater steels (2012)
Lehmusto Juho, Lindberg Daniel, Yrjas Patrik, Skrifvars Bengt-Johan, Hupa Mikko
B3 Non-refereed conference proceedings
Reactions of potassium chloride with chromium as a first step towards high temperature corrosion in biomass combustion (2009)
Lehmusto Juho, Yrjas Patrik, Hupa Mikko

Last updated on 2018-19-09 at 19:51