CO2-based Acetic Acid Production Assessment

Author(s)

Pacheco, Kelvin A. ; Bresciani, Antonio E. ; Nascimento, Claudio A. O. ; Alves, Rita M. B. ; Pierucci, S ; Manenti, F ; Bozzano, GL ; Manca, D

• Document type: Journal article
• Source: 30TH EUROPEAN SYMPOSIUM ON COMPUTER AIDED PROCESS ENGINEERING, PTS A-C; v. 48, p. 6-pg., 2020-01-01.

Abstract

New synthetic routes to acetic acid production using CO2 have been studied, such as methanol hydrocarboxylation, reaction of methane with CO2, lignin with CO2 and CO2 hydrogenation. They represent a significant progress in synthetic chemistry, with the novel approach to acetic acid production and CO2 transformation. These innovative routes can replace fossil raw materials by CO2, additionally promote CO2.abatement. This study presents an assessment of acetic acid production from CO2 and identification of the most promising route by a multicriteria decision analysis, including process demand and characteristics, and a shortcut exergy criterion. Methanol hydrocarboxylation has demonstrated to be the best one. The process was designed based on hierarchical approach process synthesis in Aspen Plus simulator to verify its technical feasibility. An exergetic analysis was carried out in the proposed process design to evaluate thermodynamic inefficiencies. The gas recompression and the gas separation system presented the highest exergy destruction, in which possible process intensification or enhancements potentially improve the process. (AU)

• FAPESP's process: 14/50279-4 - Brasil Research Centre for Gas Innovation
• Grantee: Julio Romano Meneghini
• Support Opportunities: Research Grants - Research Centers in Engineering Program
• FAPESP's process: 17/26683-8 - Evaluation of CO2 conversion processes in chemical products integrated with thermoelectric power plants
• Grantee: Kelvin André Pacheco
• Support Opportunities: Scholarships in Brazil - Doctorate