Moving Bed Gasification of Low Rank Alaska Coal

Table 2

Descriptions of the various reactor blocks used in the model.

Process	Reactor block used	Description
Coal drying	RYield	Simulates coal drying by considering the moisture content in the proximate analysis of the coal. RYield reactor block is used when both the stoichiometry and kinetics data of the reaction are unknown.
Coal pyrolysis	RYield	Simulates the coal pyrolysis process. Here, we specify the yield of the pyrolysis product using RYield reactor model.
Char decomposition	RStoic	Char decomposition is carried out in RStoic reactor block. RStoic block is used when the stoichiometry of the reaction is known, but kinetics data is unknown. RStoic block decomposes char into its constituents based on its ultimate analysis.
Char gasification and combustion	RCSTR	Simulates char gasification and combustion. Unlike the RYield and RStoic models, RCSTR block needs kinetics data for the reactions occurring in the reactor. Reactor volume, temperature, and reaction rates for all the reactions occurring in the reactor are required information.