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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Conversion of CO2-Rich Natural Gas to Liquid Transportation Fuels via Trireforming and Fischer-Tropsch Synthesis: Model-Based Assessment

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Author(s):
Graciano, Jose E. A. [1, 2] ; Chachuat, Benoit [2] ; Alves, Rita M. B. [1]
Total Authors: 3
Affiliation:
[1] Univ Sao Paulo, Dept Chem Engn, Escola Politecn, BR-05508010 Sao Paulo - Brazil
[2] Imperial Coll London, Dept Chem Engn, Ctr Proc Syst Engn, London SW7 2AZ - England
Total Affiliations: 2
Document type: Journal article
Source: Industrial & Engineering Chemistry Research; v. 57, n. 30, SI, p. 9964-9976, AUG 1 2018.
Web of Science Citations: 2
Abstract

This paper presents a model-based analysis of a process coupling trireforming and Fischer-Tropsch technologies for the production of liquid fuels from CO2-rich natural gas. The process also includes an upgrading section based on hydrocracking, a separation section, a water gas shift unit, and a Rankine cycle unit for recovering the excess thermal energy produced by the Fischer-Tropsch reactor. Simulations are carried out in the process simulator Aspen Plus using standard unit operation models where applicable, while modeling the nonconventional units, such as the Fischer-Tropsch and hydrocracking reactors, using Aspen Custom Modeler. The proposed process could achieve a carbon conversion efficiency upward of 50% in the analyzed scenario, despite a natural gas feedstock with 30 mol % CO2. The analysis also reveals that the plant-wide electricity consumption could be covered nearly entirely by the Rankine cycle unit, enabling significant cost savings alongside a reduction of the overall global warming potential by about 10% in this specific case study. Finally, the results of a detailed economic assessment indicate that cheap natural gas is a prerequisite to the economic viability of the process, which would remain attractive in the current US scenario, yet presents a major impediment for its deployment in Brazil. (AU)

FAPESP's process: 14/50279-4 - Brasil Research Centre for Gas Innovation
Grantee:Julio Romano Meneghini
Support type: Research Grants - Research Centers in Engineering Program