(215c) Technoeconomic Assessment of Two-Step Process for Upgrading and Utilizing Used Railroad Ties in an Integrated Biorefinery
The technoeconomic analysis assumed 2.33 million metric tons of used railroad ties are available yearly according to statistics by the Railroad tie association. This analysis considers 3 plants spread across the U.S. to minimize transportation cost with 2358 tons/day throughput each. The rail road ties biorefinery consists of eight areas including preprocessing (A100), thermal desorption (A200) and fast pyrolysis and vapor quenching (A300), hydroprocessing (A400), hydrogen generation (A500), power generation (A600), cooling and other utilities (A700) and waste management (A800). The minimum selling prices as well as sensitivity analyses were performed to determine the impact of thermal desorption conditions on the overall economic.