| Full text | |
| Author(s): |
Total Authors: 3
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| Affiliation: | [1] Univ Estadual Campinas, Sch Chem Engn, Lab Optimizat Design & Adv Proc Control LOPCA, BR-13083852 Campinas, SP - Brazil
[2] Delft Univ Technol, Fac Appl Sci, Dept Biotechnol, NL-2629 HZ Delft - Netherlands
Total Affiliations: 2
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| Document type: | Journal article |
| Source: | PROCESSES; v. 7, n. 10 OCT 2019. |
| Web of Science Citations: | 0 |
| Abstract | |
This paper presents the process design and assessment of a sugarcane-based ethanol production system that combines the usage of both mass and heat integration (pinch analysis) strategies to enhance the process efficiency and renewability performance. Three configurations were analyzed: (i) Base case: traditional ethanol production (1G); (ii) mass-integrated (1G2G); and (iii) mass and heat-integrated system (1G2G-HI). The overall assessment of these systems was based on complementary approaches such as mass and mass-heat integration, energy and exergy analysis, exergy-based greenhouse gas (GHG) emissions, and renewability exergy criteria. The performances of the three cases were assessed through five key performance indicators (KIPs) divided into two groups: one is related to process performance, namely, energy efficiency, exergy efficiency, and average unitary exergy cost (AUEC), and the other one is associated to environmental performance i.e., exergy-based CO2-equation emissions and renewability exergy index. Results showed a higher exergy efficiency of 50% and the lowest AUEC of all the systems (1.61 kJ/kJ) for 1G2G-HI. Furthermore, the destroyed exergy in 1G2G-HI was lower by 7% and 9% in comparison to the 1G and 1G2G cases, respectively. Regarding the exergy-based GHG emissions and renewability performance (lambda(index)), the 1G2G-HI case presented the lowest impacts in terms of the CO2-equivalent emissions (94.10 gCO(2)-eq/MJ products), while lambda(index) was found to be environmentally unfavorable (lambda = 0.77). However, lambda(index) became favorable (lambda > 1) when the useful exergy of the byproducts was considered. (AU) | |
| FAPESP's process: | 17/03091-8 - Techno-economic and environmental assessment of biorefinery technologies |
| Grantee: | Pablo Andrés Silva Ortiz |
| Support Opportunities: | Scholarships in Brazil - Post-Doctoral |
| FAPESP's process: | 17/16106-3 - Techno-economic and environmental assessment of biorefinery technologies |
| Grantee: | Pablo Andrés Silva Ortiz |
| Support Opportunities: | Scholarships abroad - Research Internship - Post-doctor |