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Conference papers
Vision 2020…Into the Future of Pulp and Paper Mill Sustainability, 20PEERS Conference

Vision 2020…Into the Future of Pulp and Paper Mill Sustainability, 20PEERS Conference

Conference papers
Weld Overlay, 20PEERS Conference

Weld Overlay, 20PEERS Conference

Conference papers
Experimental Validation of a Recovery Boiler Superheater Reg

Experimental Validation of a Recovery Boiler Superheater Region CFD Model, 2016 PEERS

Conference papers
Microbially Influenced Corrosion, 19PEERS

Microbially Influenced Corrosion, 19PEERS

Journal articles
Magazine articles
Subscription Access
Integrated study of flue gas flow and superheating process in a recovery boiler using computational fluid dynamics and 1D-process modeling, TAPPI Journal June 2020

ABSTRACT: Superheaters are the last heat exchangers on the steam side in recovery boilers. They are typically made of expensive materials due to the high steam temperature and risks associated with ash-induced corrosion. Therefore, detailed knowledge about the steam properties and material temperature distribution is essential for improving the energy efficiency, cost efficiency, and safety of recovery boilers. In this work, for the first time, a comprehensive one-dimensional (1D) process model (1D-PM) for a superheated steam cycle is developed and linked with a full-scale three-dimensional (3D) computational fluid dynamics (CFD) model of the superheater region flue gas flow. The results indicate that: (1) the geometries of headers and superheater platens affect platen-wise steam mass flow rate distribution (3%•7%); and (2) the CFD solution of the 3D flue gas flow field and platen heat flux distribution coupled with the 1D-PM affect the platen-wise steam superheating temperature (45%•122%) and material temperature distribution (1%•6%). Moreover, it is also found that the commonly-used uniform heat flux distribution approach for the superheating process is not accurate, as it does not consider the effect of flue gas flow field in the superheater region. These new observations clearly demonstrate the value of the present integrated CFD/1D-PM modeling approach.

Journal articles
Magazine articles
The Knowledge Trail, Paper360º, July/August 2017

The Knowledge Trail, Paper360º, July/August 2017

Conference papers
FT-NIR MEASUREMENT OF WBL SOLIDS AND LIGNIN FOR NEXT GENERATION DIGESTER CONTROL, 2018 PEERS

FT-NIR MEASUREMENT OF WBL SOLIDS AND LIGNIN FOR NEXT GENERATION DIGESTER CONTROL, 2018 PEERS

Conference papers
ECHOWISE® • Listening to Your Process, 2018 PEERS

ECHOWISE® • Listening to Your Process, 2018 PEERS

Conference papers
Disc Filter Total Care Keeping Your Filter from Becoming a Money Pit, 2018 PEERS

Disc Filter Total Care Keeping Your Filter from Becoming a Money Pit, 2018 PEERS

Conference papers
Cannabis-Higher Form of Pulping, 2018 PEERS

Cannabis-Higher Form of Pulping, 2018 PEERS