Laboratory Study of Small-Scale Lateral Growth Mechanisms for Underground Coal Gasification. Final Report January 1984-January 1988

摘要

Quarried coal blocks housed in a refractory chamber were exposed to high temperature gases approximating underground coal gasification (UCG) conditions. The exposed coal faces were monitored to determine the small-scale mechanisms of lateral cavity growth. Side wall tests indicate that the lateral growth process is heat transfer-controlled gasification. In roof tests, significant spalling rates were observed for the lignite samples while Hanna coal showed no spalling.