No.25 Development of a Mini-Direct-Heating Reactor for the Measurement of Coal Char Gasification Rate under High -Pressure and Temperature.

Abstract

A mini directly-heated reactor (mini-DHR) system was constructed and modified for accurate and handy gasification rate measurement under high temperature and high pressure in the presence of CO2, CO, H2O, and H2. The mini-HDR was made of Platinum tube of 3 mm I.D. and equipped with a VCR metal gasket connector to the reaction system; A quarts wool sample holder was used for the char (ca. 1 mg) packing in the reactor; A rapid heating combustion method using Q-Mass was used to determine the remaining carbon amount after the gasification of char. Systematic measurements of gasification rates were performed using the modified mini-DHR system and a gasification rate equation was established by combining the Langmuir-Hinshelwood model and the Random Pore model.