Numerical simulation of hydrodynamic behaviors in a gas-solids dense downer reactor
Sign Up to like & getrecommendations! Published in 2020 at "Advanced Powder Technology"
DOI: 10.1016/j.apt.2020.05.022
Abstract: Abstract A Eulerian-Eulerian model incorporating the kinetic theory of granular flow was adopted to simulate the gas-solids flow behaviors in a dense downer below a conventional downer, which could be used for the further pyrolysis… read more here.
Keywords: solids holdup; downer; dense downer; hydrodynamic behaviors ... See more keywords
Multi-fluid Eulerian simulation of binary particles mixing and gas–solids contacting in high solids-flux downer reactor equipped with a lateral particle feeding nozzle
Sign Up to like & getrecommendations! Published in 2021 at "Chinese Journal of Chemical Engineering"
DOI: 10.1016/j.cjche.2021.03.009
Abstract: Abstract The performance of binary particles mixing and gas–solids contacting, which is considered qualitatively to have a significant influence on the heat transfer in internal heated circulating fluidized beds, is carefully investigated by means of… read more here.
Keywords: gas; downer; binary particles; heat ... See more keywords
Pilot verification of a two-stage fluidized bed gasifier with a downer pyrolyzer using oxygen-rich air
Sign Up to like & getrecommendations! Published in 2022 at "Fuel"
DOI: 10.1016/j.fuel.2021.121816
Abstract: Abstract A novel two-stage fluidized bed gasification system coupling a downer pyrolyzer and a riser gasifier was proposed, and a pilot facility of 15 kg/h of feedstock was further built and tested, by which the resulting… read more here.
Keywords: two stage; downer; stage fluidized; gas ... See more keywords
3D CPFD simulations of gas-solids flow in a CFB downer with cluster-based drag model
Sign Up to like & getrecommendations! Published in 2020 at "Powder Technology"
DOI: 10.1016/j.powtec.2019.07.044
Abstract: Abstract The interactions of gas and solids are important in determining the flow structures in the Circulating Fluidized Bed (CFB) downer. Proper description of the interphase drag model is thus crucial for simulating the downer.… read more here.
Keywords: downer; drag model; gas solids; cfb downer ... See more keywords
Numerical Experimentation and Validation of Shrinking Particle - Gas Reaction in a Pilot Plant Downer Reactor
Sign Up to like & getrecommendations! Published in 2021 at "Combustion Science and Technology"
DOI: 10.1080/00102202.2021.1955871
Abstract: Downer reactors have been the choice for catalytic reactions necessitating control on intermediates, short residence time and high solid loading. The noncatalytic gas-solid reactions exhibit differ... read more here.
Keywords: experimentation validation; downer; gas; shrinking particle ... See more keywords
Factors influencing how Canadian dairy producers respond to a downer cow scenario.
Sign Up to like & getrecommendations! Published in 2021 at "Journal of dairy science"
DOI: 10.3168/jds.2021-20847
Abstract: Understanding how downer cattle are managed allows for the evaluation of strengths and weaknesses in these practices, which is an important step toward improving the care these animals receive. The objective of this cross-sectional study… read more here.
Keywords: canadian dairy; downer cow; dairy producers; downer ... See more keywords