Generation of surplus electricity in sugarcane mills from sugarcane bagasse and straw: Challenges, failures and opportunities

Anselmo Fioranelli and Waldir A. Bizzo

Renewable and Sustainable Energy Reviews, 2023, vol. 186, issue C

Abstract: Sugarcane mills currently use sugarcane bagasse to cogenerate heat and electricity, supplying the process with mechanical, thermal and electrical energy. Some of these plants are able to produce surplus electricity to export to the national grid. With the improvement in collection techniques, sugarcane straw has also become available and has been used in some mills as fuel for steam boilers, mixed with sugarcane bagasse. However, due to different traits compared to bagasse, the use of sugarcane straw may pose additional problems of incrustation and corrosion on heat exchange surfaces. Several alternatives and technologies have been studied and tried out in order to increase the production of surplus electricity. Among others, biomass integrated gasifier–gas turbine combined cycle (BIGCC) is a promising technology. However, several attempts have resulted in failure, whether on a pilot or industrial scale. Biomass gasification integrated with internal combustion engines can become an opportunity for generation of small power capacity (<15 MW) and integrated to sugarcane mills. This paper analyzes the difficulties and barriers to increasing electricity generation in the sugarcane industry through studies, projects and experimental and industrial-scale installations that have already been carried out.

Keywords: Biomass energy; Sugarcane bagasse; Sugarcane straw; Power generation; Gasification; Biomass integrated gasification/gas turbine combined cycle (search for similar items in EconPapers)
Date: 2023
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DOI: 10.1016/j.rser.2023.113647

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