scholarly journals Assessment of underground coal gasification in bituminous coals. Volume I. Executive summary. Final report

1981 ◽  
Author(s):  
Keyword(s):  
Coal Gasification ◽  
Final Report ◽  
Underground Coal Gasification ◽  
Executive Summary ◽  
Bituminous Coals

A Side Wall Burn Model for Cavity Growth in Underground Coal Gasification

1983 ◽  
Vol 105 (2) ◽  
pp. 145-155 ◽  
Author(s):  
T. L. Eddy ◽  
S. H. Schwartz
Keyword(s):  
Coal Gasification ◽  
Cavity Growth ◽  
Side Wall ◽  
Field Tests ◽  
Underground Coal Gasification ◽  
Convection Diffusion ◽  
Bituminous Coals ◽  
Thin Seam ◽  
Burn Through ◽  
Cavity Width

A mechanistic computer model is presented which predicts the 3-D cavity growth during the gasification phase of underground coal gasification. Developed for swelling bituminous coals, the model also obtains reasonable cavity width and length values for shrinking sub-bituminous coals. The model predicts cavity shape and burn-through times based on the coal properties, seam thickness, water reacting and the interwell distance. Employing a 2-D boundary layer model to determine the convective diffusion rate of oxygen to the reacting walls, it is found that natural convection diffusion must be included. The model includes flow in the injection region, the swirling, mixing effect in the cavity, and transitions from thick to thin seam geometry. Simulations of the Hanna II, Phase 2 and Pricetown I field tests, as well as a parametric study on Pittsburgh seam coal, are presented.

Kinetics of steam gasification of bituminous coals in terms of their use for underground coal gasification

2015 ◽  
Vol 130 ◽  
pp. 282-291 ◽  
Author(s):  
Stanisław Porada ◽  
Grzegorz Czerski ◽  
Tadeusz Dziok ◽  
Przemysław Grzywacz ◽  
Dorota Makowska
Keyword(s):  
Coal Gasification ◽  
Steam Gasification ◽  
Underground Coal Gasification ◽  
Bituminous Coals ◽  
Kinetics Of
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