Feasibility study of combined heat, power, and fuel supply system using bioethanol derived from marine debris for coastal fisheries facilities

沿岸漂着ゴミ由来のバイオメタノールによる沿岸域水産施設への熱・電力・燃料併給の可能性の検討

Feasibility study of combined heat, power, and fuel supply system using bioethanol derived from marine debris for coastal fisheries facilities

The author has previously developed and published energy and resource flow models focusing on the post-collection process of marine debris. These models were designed to examine the technical and economic feasibility of establishing businesses with energy systems. One of the previous studies examined the economic feasibility of a microgrid system combining a styrene oil conversion device from drifted styrofoam and a cogeneration system (CGS). The current study focuses on the “biomass gasification furnace and methanol synthesis furnace” technology, which has a proven track record with woody biomass. If this methanol synthesis furnace could be applied to drifting marine debris, it would be an option for providing energy to coastal facilities. In this study, an energy flow model was developed that can easily calculate the energy flow of a methanol synthesis furnace, CGS, and fuel supply system using biomethanol obtained from coastal biomass such as marine debris. If only marine debris is taken into account, the amount of biomass will be insufficient. For this reason, discarded fish and food residues from fishing ports and fish processing plants were also evaluated. Furthermore, this biomethanol can be used together with waste cooking oil to synthesize biodiesel fuel (FAME), enabling various applications including marine fuel. Using this energy model, the potential for energy self-sufficiency for coastal fisheries facilities (fishing ports, fish processing plants, and fishing boats) was calculated. The calculation results show energy selfsufficiency as a function of changes in biomass volume. However, they also found it difficult to be self-sufficient in electricity, heat, and fuel at the same time. Additionally, an optimization model was developed to determine the optimal size of the CGS, demonstrating the potential to improve the energy self-sufficiency of coastal fishery facilities.

Creators Ishida Takeshi

[ISSN]0370-9361