Process modeling and energy consumption of fry-drying and torrefaction of organic solid waste. Issue 6 (26th April 2017)

• Record Type: Journal Article
• Authors: Do, Truong Xuan; Lim, Young-il; Cho, Hyodeuk; Shim, Jaehui; Yoo, Jeongkeun; Rho, Kyutai; Choi, Seong-Geun; Park, Byung-Yoon
• Is Part Of: Drying technology. Volume 35:Issue 6(2017)
• Page Start: 754
• Page End: 765
• Publication Date: 2017-04-26
• Subjects: Energy consumption -- fry-drying -- multiple-effect evaporation -- organic solid waste -- process simulation -- torrefaction; Drying -- Periodicals; Desiccation; 660.28426
• DOI: 10.1080/07373937.2016.1211674
• Languages: English
• ISSNs: 0737-3937

Abstract

ABSTRACT: A commercial fry-drying and torrefaction (FDT) plant for producing bio-solid fuel from 45 ton/d organic sludge with 80% water was proposed. The FDT plant was modeled by a process simulator with the aid of plant data. Two double-effect evaporators were used in series to vaporize water, using heat-carrying oil. Torrefied and pelletized bio-solid was produced at 413 kg/h, comprising 4.4 and 4.8% of water and oil, respectively, and 67% of its mass was used as heat source. The total energy consumption was 1, 369 kW, including 93 kW electrical and 1, 276 kW thermal energies. The total heat duty was 788 kcal/kg-water.