Abstract

CASTILLO ALVAREZ, Yoisdel; MONTEAGUDO YANES, José Pedro; JIMENEZ BORGES, Reinier  and  PATINO VIDAL, Carlos Diego. Design proposal of an industrial biodigester of filter-cake for the generation of electrical energy. Universidad y Sociedad [online]. 2021, vol.13, n.5, pp. 74-80.  Epub Oct 02, 2021. ISSN 2218-3620.

The present work is framed in the design of a biogas plant that uses filter-cake as a substrate. The study of the different fields of use of biogas and its efficiency in the generation of electricity through generator sets. For the design of the plant, six industrial biodigesters and six generator sets have been proposed for a generation capacity of 24 MW for the sale of electrical energy generating an income of $1,756,093.11$year. The constructive characteristics of the biodigester, the volume of biogas generated, as well as the amount needed to meet the demand for biogas were determined from the methodology presented. The worldwide performance of the main biogas producing countries offers plant construction costs per cubic meter of biogas generated in the order of $200 to $500. The potential for the generation of filter-cake by the sugar factory is determined to be 144 t/d with a biogas generation capacity of 13 038 Nm3/d. The proposed plant has a generating capacity of 24 MWh/d of electricity supplied to the grid. The economic evaluation of the plant shows that the investment of $4,237,000.00 has an Internal Rate of Return (IRR) of 8% and an Investment Recovery Period (PRI) of 6 years.

Keywords : Biodigester; biogas; filter-cake; generator sets; sugar factory.

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