Process simulation of co-firing torrefied biomass in a 220MWe coal-fired power plant

Abstract

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Torrefaction of Various Types of Biomass in Laboratory Scale, Batch-Wise Isothermal Rotary Reactor and Pilot Scale, Continuous Multi-Stage Tape Reactor

“…It is a process that is considered to improve the logistics of the upgraded fuel [6,7] and make it more suitable for final use such as co-firing [8][9][10] or gasification [11][12][13][14]. Torrefaction is sometimes called slow pyrolysis and it typically takes place at temperatures between 250 and 300°C with residence times ranging between 10 and 60 min [5,[15][16][17][18][19][20][21].…”

Biomass for industrial applications: The role of torrefaction

“…Tsalidis et al [49], for example, demonstrate the benefits of torrefied biomass use in coal-fired power generation plants in the Netherlands. In 2012, Li et al [50] using process simulation software (Aspen Plus) and analyzing the possibility of co-firing torrefied biomass in a 220 MWe coal-fired power plant concluded that 100% torrefied biomass usage with maximum efficiency and minimum emissions is technically possible. Huang et al [51] and Basu et al [52] demonstrate environmental benefits using torrefaction in power plant in Taiwan and in the eastern Canada respectively.…”

Gasificación de madera para la obtención de un syngas útil en la producción de biocombustibles y/o productos químicos

“…Para el software Aspen Plus, la biomasa se considera un compuesto "no convencional", por lo tanto para simular el proceso de gasificación usando los algoritmos y subrutinas incluidas por defecto en el software, es necesario descomponerla en compuestos reactivos (de acuerdo a su análisis próximo y análisis último) antes de ingresarla al gasificador. Para tal efecto se utiliza un reactor de rendimiento (bloque R-YIELD) con ayuda de subrutinas en FORTRAN [12,18]. En la Figura 3 se muestra el modelo utilizado para simular el proceso de gasificación.…”