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Operations Research, Systems Engineering and Industrial Engineering

Fast pyrolysis

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Full-Text Articles in Mechanical Engineering

Techno-Economic Analysis Of Fast Pyrolysis And Upgrading Facilities Employing Two Depolymerization Pathways, Yanan Zhang, Tristan Brown, Guiping Hu, Robert C. Brown Oct 2016

Techno-Economic Analysis Of Fast Pyrolysis And Upgrading Facilities Employing Two Depolymerization Pathways, Yanan Zhang, Tristan Brown, Guiping Hu, Robert C. Brown

Guiping Hu

We evaluate the economic feasibility of fast pyrolysis and upgrading facilities 11 employing either of two depolymerization pathways: two-stage hydrotreating 12 followed by a FCC (fluid catalytic cracking) stage or single-stage hydrotreating 13 followed by a hydrocracking stage. In the hydrotreating/FCC pathway, two options 14 are available as the hydrogen source for hydrotreating: merchant hydrogen or 15 hydrogen from natural gas reforming. The primary products of the hydrotreating/FCC 16 pathway are commodity chemicals whereas the primary products for the 17 hydrotreating/hydrocracking pathway are transportation fuels and hydrogen. The two 18 pathways are modeled using Aspen Plus® for ...


Techno-Economic Analysis Of Monosaccharide Production Via Biomass Fast Pyrolysis, Yanan Zhang, Tristan Brown, Guiping Hu, Robert C. Brown Oct 2016

Techno-Economic Analysis Of Monosaccharide Production Via Biomass Fast Pyrolysis, Yanan Zhang, Tristan Brown, Guiping Hu, Robert C. Brown

Guiping Hu

The economic feasibility of a facility producing monosaccharides, hydrogen and transportation fuels via fast pyrolysis and upgrading pathway was evaluated by modeling a 2000 dry metric ton biomass/day facility using Aspen Plus®. Equipment sizing and cost were based on Aspen Economic Evaluation® software. The results indicate that monosaccharide production capacity could reach 338 metric tons/day. Co-product yields of hydrogen and gasoline were 23.4 and 141 metric tons/day, respectively. The total installed equipment and total capital costs were estimated to be $210 million and $326 million, respectively. A facility internal rate of return (IRR) of 11.4 ...


Life Cycle Assessment Of The Production Of Hydrogen And Transportation Fuels From Corn Stover Via Fast Pyrolysis, Yanan Zhang, Guiping Hu, Robert C. Brown Oct 2016

Life Cycle Assessment Of The Production Of Hydrogen And Transportation Fuels From Corn Stover Via Fast Pyrolysis, Yanan Zhang, Guiping Hu, Robert C. Brown

Guiping Hu

This life cycle assessment (LCA) evaluates and quantifies the environmental impacts of the production of hydrogen and transportation fuels from the fast pyrolysis and upgrading of corn stover. Input data for this analysis come from Aspen Plus modeling, a GREET model database and a U.S Life Cycle Inventory Database. SimaPro 7.3 software is employed to estimate the environmental impacts. The results indicate that the net fossil energy input is 0.25 MJ and 0.23 MJ per km traveled for a light-duty vehicle fueled by gasoline and diesel fuel, respectively. Bio-oil production requires the largest fossil energy input ...


Comparative Techno-Economic Analysis Of Biohydrogen Production Via Bio-Oil Gasification And Bio-Oil Reforming, Yanan Zhang, Tristan Brown, Guiping Hu, Robert C. Brown Oct 2016

Comparative Techno-Economic Analysis Of Biohydrogen Production Via Bio-Oil Gasification And Bio-Oil Reforming, Yanan Zhang, Tristan Brown, Guiping Hu, Robert C. Brown

Guiping Hu

This paper evaluates the economic feasibility of biohydrogen production via two bio-oil processing pathways: bio-oil gasification and bio-oil reforming. Both pathways employ fast pyrolysis to produce bio-oil from biomass stock. The two pathways are modeled using Aspen Plus® for a 2000 t d-1 facility. Equipment sizing and cost calculations are based on Aspen Economic Evaluation® software. Biohydrogen production capacity at the facility is 147 t d-1 for the bio-oil gasification pathway and 160 t d-1 for the bio-oil reforming pathway. The biomass-to-fuel energy efficiencies are 47% and 84% for the bio-oil gasification and bio-oil reforming pathways, respectively. Total capital investment ...