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This work involves CO2 gasification of a pinewood char at temperatures between 1140K (867°C) and 1260K (987°C). Novel features of this work include: (1) measurements of char conversion for large (∼3mm×1mm×1mm) char particles at pressures up to 10±0.1atm, (2) Thiele analysis of the char conversion data to quantify the influence of internal heat-and-mass diffusion on apparent reaction rates, and (3)...
The objective of this study is to measure apparent rate parameters for pinewood char gasification with CO 2 using large particles with relevance to practical gasifiers. The novel features of this work include: (1) char gasification for CO 2 recycling, which is studied less in the past than char gasification in other environments, (2) independent measurements involving gravimetric analyses...
Simultaneous measurements of carbon monoxide (CO) mole fraction and temperature using tunable diode laser absorption spectroscopy (TDLAS) near 2.3 μm are reported. The measurement method uses ro-vibrational transitions [R(27): v″ = 1 → v′ = 3] and [R(6): v″ = 0 → v′ = 2] in the first overtone band of CO near 2.3 μm (~4,278 cm−1). The measurements were performed in the post flame environment of fuel...
Fuel synthesis through coal and biomass gasification has the potential to provide a solution to the increasing demand for energy and transportation fuels. To theoretically understand the complex chemical processes in a gasifier and to identify the most influential parameters for syngas production, we developed a multiphysics model to simulate the gasification processes in a well-stirred reactor. This...
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