DRYING OF MICROPARTICLE SLURRY AND SALT-WATER SOLUTION BY A POWDER PARTICLE SPOUTED BED

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概要

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• Adhesion and agglomeration between fine particles and coarse particles are very strong for fine particles under several microns in diameter. The powder-particle spouted bed (P-PSB) was developed as a new type of dryer for continuous drying of microparticles under several microns in diameter. The powder-particle spouted bed dryer is a cone-bottomed fluidized bed without a gas distributor. Coarse particles were loaded into the dryer and the hot gas was fed to it from the cone-bottom so that coarse particles were fluidized violently, and a microparticle slurry and a salt-water solution were continuously fed to it.Continuous drying of a microparticle slurry and a salt-water solution were carried out by using the powder-particle spouted bed, and the drying characteristics were investigated. The moisture content of the microparticles dried by this process from the submicroparticle (under 1 μm in diameter) slurry and the salt-water solution were nearly equal to their equilibrium moisture content over the range of the experiment. When the drying efficiency was above 60%, agglomerates were observed in the bed. The relative humidity of the outlet gas and the drying efficiency can be calculated by mass and heat balances across the bed.

• 社団法人 化学工学会の論文
• 1996-02-20

著者

• KATO K.

  Department of Physics and Tandem Accelerator Center, University of Tsukuba

• Kato K

  Department Of Biological & Chemical Engineering Gunma University Kiryu

• TAKAHASHI Y.

  Department of Medicine, Section of Infectious Diseases, Boston University School of Medicine, Evans

• GUO Qimin

  Department of Biological & Chemical Engineering Gunma University Kiryu

• HIKIDA S.

  Department of Biological & Chemical Engineering Gunma University Kiryu

• NAKAGAWA N.

  Department of Biological & Chemical Engineering Gunma University Kiryu

• Guo Q

  Tsinghua Univ. Beijing Chn

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