Sewage sludge gasification in a bench scale rotary kiln. (15th January 2018)

• Record Type: Journal Article
• Authors: Freda, Cesare; Cornacchia, Giacinto; Romanelli, Assunta; Valerio, Vito; Grieco, Massimiliano
• Is Part Of: Fuel. Volume 212(2018)
• Page Start: 88
• Page End: 94
• Publication Date: 2018-01-15
• Subjects: Rotary kiln -- Sewage sludge -- Tar -- Equivalence ratio -- Raw gas -- Cold gas efficiency; Fuel -- Periodicals; Coal -- Periodicals; Coal; Fuel; Periodicals; 662.6
• DOI: 10.1016/j.fuel.2017.10.013
• Languages: English
• ISSNs: 0016-2361

Abstract

Graphical abstract: Highlights: Sewage sludge was gasified in a bench scale rotary kiln. Temperature and the equivalence ratio were varied. Each Test run for about 2 h at steady state. Input and output streams were quantified and qualified. Drawbacks of the process were sewage sludge feeding and rotary kiln sealing. Abstract: The goal of this work is to investigate the potentiality of energetic recovery by sewage sludge gasification. Experimental gasification tests were carried out in a bench scale rotary kiln under simulated autothermal condition. The mass rate of sludge was in the range 170–260 g/h. The gasification temperature was varied from 750 to 850 °C, equivalence ratio was increased up to 0.24. The tests run for about 3 h. Input and output streams of the process were quantified and analyzed as to assess the cold gas efficiency. Tar content in the raw gas was determined as well. The main drawbacks occurred during the tests were highlighted to have a realistic frame of the experimented technology.