CFD modeling of mixing and suspension in pulp stock ... - ESSS

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PRESENTATION TOPICS • Company Overview: Polytechnic School of University of Sao Paulo • Problem Description; • Methodology; • Goals; • Conclusion and next steps.
Problem Description The pulp desintegration has the highest operational cost in the recycling paper industry. The power consumption in the pulper is directly related with the impellers design, water/fiber quantities in the chest, rotor velocity, fiber/contaminants separation and the segregation of the good quality fibers. State-of-the-art: Spogis;Nunhes (2009) Fiber pulp chest application: Bhole;Ford;Bennington(2009) Ford;Ein- Mozaffari;Bennington(2006) Kor;Prince;Fletcher (2008) Oshinowo;Bakker(2002) Ramasubramanian;Shiffler;Jayachandran(2008) Roux, Jean-Claude. (2001) Saeed;Ein-Mozaffari;Upreti(2008)
Page 1: CFD modeling of mixing and suspensi
Page 5 and 6: chest geometry
Page 7: meshes Number of elements 446888
Page 10 and 11: preliminary results
Page 12 and 13: case with baffles Re=10
Page 14 and 15: case without baffles Re=10
Page 16 and 17: obviously, this is extreme conditio
Page 18 and 19: Conclusion and next steps • Study
Page 20: Thank you

CFD modeling of mixing and suspension in pulp stock ... - ESSS

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