Analysis of heat recovery from a spray dryer by recirculation of exhaust air

Boris Golman, Wittaya Julklang

Research output: Contribution to journalArticle

19 Citations (Scopus)

Abstract

Model simulations were employed to investigate the influences of process parameters on the energy recovery in spray drying process that partially recycle the exhaust drying gas. The energy efficiency and energy saving were studied for various values of recirculation ratios with respect to the temperature and flow rate of the drying air, slurry feed rate and concentration of slurry in spray drying of advanced ceramic materials. As a result, significant gains in energy efficiency and energy saving were obtained for a spray drying system with high recirculation ratio of exhaust air. The high slurry feed rate and the low slurry concentration, inlet drying air temperature and drying air flow rate enhanced the energy efficiency of spray drying system. However, the high energy saving was obtained in spray dryers operating at low slurry feed rate and high slurry concentration.

Original languageEnglish
Pages (from-to)641-649
Number of pages9
JournalEnergy Conversion and Management
Volume88
DOIs
Publication statusPublished - Dec 2014

Keywords

  • Advanced ceramic materials
  • Energy recovery
  • Exhaust gas recirculation
  • Mathematical model
  • Spray drying

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Nuclear Energy and Engineering
  • Fuel Technology
  • Energy Engineering and Power Technology

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