skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Biomass drying in a pulsed fluidized bed without inert bed particles

Journal Article · · Fuel
 [1];  [1];  [1];  [2];  [3]
  1. The Univ. of British Columbia, Vancouver, BC (Canada)
  2. The Univ. of British Columbia, Vancouver, BC (Canada); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  3. The Univ. of Tokyo, Tokyo (Japan)

Batch drying was performed in the pulsed fluidized bed with various species of biomass particles as an indicator of gas–solid contact efficiency and mass transfer rate under different operating conditions including pulsation duty cycle and particle size distribution. The fluidization of cohesive biomass particles benefited from the shorter opening time of pulsed gas flow and increased peak pressure drop. The presence of fines enhanced gas–solid contact of large and irregular biomass particles, as well as the mass transfer efficiency. A drying model based on two-phase theory was proposed, from which effective diffusivity was calculated for various gas flow rates, temperature and pulsation frequency. Intricate relationship was discovered between pulsation frequency and effective diffusivity, as mass transfer was deeply connected with the hydrodynamics. Effective diffusivity was also found to be proportional to gas flow rate and drying temperature. In conclusion, operating near the natural frequency of the system also favored drying and mass transfer.

Research Organization:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
AC05-00OR22725
OSTI ID:
1328340
Journal Information:
Fuel, Vol. 186, Issue C; ISSN 0016-2361
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 34 works
Citation information provided by
Web of Science

References (71)

An experimental study on catalytic bed materials in a biomass dual fluidised bed gasifier journal September 2015
Distribution of large biomass particles in a sand-biomass fluidized bed: Experiments and modeling journal January 2014
Experimental investigation on mixing and segregation behavior of biomass particle in fluidized bed journal March 2009
Fluidized Bed Combustion of Some Woody Biomass Fuels journal September 2008
Fluidization of Biomass Particles in a Gas−Solid Fluidized Bed journal November 2008
The effect of thin liquid layers on fluidisation characteristics journal January 1984
Two dimensional fluidised bed reactor: Performance of a novel multi-vortex distributor journal November 2011
Experimental studies on a novel swirling fluidized-bed combustor using an annular spiral air distributor journal January 2010
Novel Gas Distributor for Fluidized Bed Drying of Biomass journal November 2009
Effects of external electric field on bubble and charged particle hydrodynamics in a gas–solid fluidized bed journal March 2015
Bubble size reduction in electric-field-enhanced fluidized beds journal June 2005
Heat transfer in a gas fluidized bed assisted by an alternating electric field journal January 1977
Magnetic Field Assisted Fluidization – a Unified Approach: a Series of Review Papers journal January 2002
Modeling of Magnetic-Field-Assisted Fluidization: Model Development and CFD Simulation of Magnetically Stabilized Fluidized Beds journal January 2015
Stabilization of gas-fluidized beds of magnetic powders by a cross-flow magnetic field journal May 2011
Influence of magnetic field on the fluidization characteristics of circulating fluidized bed journal April 2006
The Effect of Magnetic Field on Local Heat Transfer Coefficient in Fluidized Beds With Immersed Heating Surface journal July 2000
The Enhancement of Hydration of Fluidized Bed Combustion Ash by Sonication journal September 2002
Typical Application of Sound Field in Wastewater Treatment with Fluidized Bed Photocatalytic Reactor journal April 2015
Effect of acoustic field on heat transfer in a sound assisted fluidized bed of fine powders journal November 2011
Fluidization characteristics and charging behavior of fly ash in a vibro-fluidized bed journal January 2012
Fluid Dynamics of Fluidized and Vibrofluidized Beds Operating with Geldart C Particles journal June 2012
Local heat-transfer coefficient of immersed cylindrical surface in fluidized and vibrated fluidized beds journal November 2011
Analysis of the Influence of Dimensionless Vibration Number on the Drying of Pastes in Vibrofluidized Beds journal March 2010
The effect of vibration on bed voidage behaviors in fluidized beds with large particles journal September 2007
Some behaviors of shallow vibrated beds across a wide range in particle size and their implications for powder classification journal August 2000
Effective thermal diffusivity of a vibrationally fluidized bed journal April 1990
Aerodynamics of a vibrated fluid bed journal June 1980
Kinematic properties and beneficiation performance of fine coal in a continuous vibrated gas-fluidized bed separator journal December 2015
Effects and New Applications of Pulsed Flow journal December 2012
Experimental study on hydrodynamic characteristics of gas–solid pulsed fluidized bed journal March 2013
Enhanced Particle Mixing in Pulsed Fluidized Beds and the Effect of Internals journal July 2011
Heat transfer in a pulsed bubbling fluidized bed journal October 2006
Using pulsed flow to overcome defluidization journal September 2005
Pulsed fluidization—a DEM study of a fascinating phenomenon journal November 2005
Some hydrodynamic and mixing characteristics of a pulsed spouted bed dryer journal June 2001
Transient behavior of pulsed particulate fluidized beds journal March 1997
Hydrodynamics of a pulsating fluidized bed journal November 1988
Fluidisation in a pulsed gas flow journal January 1971
Deterministic chaos: a new tool in fluidized bed design and operation journal November 1993
Production of instant green banana flour (Musa cavendischii, var. Nanicão) by a pulsed-fluidized bed agglomeration journal September 2015
Drying Sawdust in a Pulsed Fluidized Bed journal March 2008
Drying of Potato Slices in a Pulsed Fluidized Bed journal April 2007
Drying of beans in a pulsed fluid bed dryer: Drying kinetics, fluid-dynamic study and comparisons with conventional fluidization journal May 2007
Drying of Turnip Seeds with Microwaves in Fixed and Pulsed Fluidized Beds journal November 2006
Drying of pulp and Paper Sludge in a Pulsed Fluid bed Dryer journal June 2002
Novel fluidized bed dryer for biomass drying journal June 2014
Analysis of the drying process of a biopolymer (poly-hydroxybutyrate) in rotating-pulsed fluidized bed journal July 2011
Drying of Sodium Acetate in a Pulsed Fluid Bed Dryer journal November 2010
Analysis of the Drying of Broccoli Florets in a Fluidized Pulsed Bed journal September 2012
Fluidization and drying of biomass particles in a vibrating fluidized bed with pulsed gas flow journal October 2015
Physical Properties for Flow Characterization of Ground Biomass from Douglas Fir Wood journal May 2013
Moisture sorption characteristics of switchgrass and prairie cord grass journal January 2013
The thin layer drying characteristics of organic apple slices journal April 2006
Drying Characteristics of the Solid By-product of Olive Oil Extraction journal June 2004
Convective drying characteristics of sludge from treatment plants in tomato processing industries journal April 2012
Modelling and Simulation of Batch and Continuous Fluidized Bed Dryers journal January 1995
The Drying of Solids—I journal January 1929
Effect of bubble interaction on interphase mass transfer in gas fluidized beds journal January 1981
Estimation of bubble diameter in gaseous fluidized beds journal January 1975
GMRES: A Generalized Minimal Residual Algorithm for Solving Nonsymmetric Linear Systems journal July 1986
A one-step non-isothermal method for the determination of effective moisture diffusivity in powdered biomass journal March 2013
Determination of effective moisture diffusivity and drying kinetics for poplar sawdust by thermogravimetric analysis under isothermal condition journal March 2012
Moisture transfer properties of cooked rice during drying journal March 2003
The diffusion of moisture in food grains—II. Estimation of the effective diffusivity journal January 1991
Forced bed mass oscillations in gas–solid fluidized beds journal January 2005
Measured Mass Transfer Coefficients in Porous Media Using Specific Interfacial Area journal September 2005
Drying of kaffir lime leaves in a fluidized bed dryer with inert particles: Kinetics and quality determination journal November 2014
Drying of Onion: Effects of Pretreatment on Moisture Transport journal January 1998
Effect of interparticle adhesion forces on elutriation of fine powders from a fluidized bed of a binary particle mixture journal February 1998
Characterisation of dry powders journal March 2009

Cited By (1)

Lignite drying in a bench-scale pulsation-assisted fluidized bed dryer journal August 2019

Similar Records

Fluidization and drying of biomass particles in a vibrating fluidized bed with pulsed gas flow
Journal Article · Thu Oct 01 00:00:00 EDT 2015 · Fuel Processing Technology · OSTI ID:1328340

Multistage fluidized bed reactor performance characterization for adsorption of carbon dioxide
Journal Article · Tue Dec 15 00:00:00 EST 2009 · Industrial and Engineering Chemistry Research · OSTI ID:1328340

The combustion of large particles of char in bubbling fluidized beds: The dependence of Sherwood number and the rate of burning on particle diameter
Journal Article · Wed Nov 15 00:00:00 EST 2006 · Combustion and Flame · OSTI ID:1328340