A Review of Research on Advanced Control Methods for Underground Coal Gasification Processes

Underground coal gasification (UCG) is a clean mining technology without significant environmental impacts. This can also be used in deep, hard-to-reach seams or deposits affected by tectonic disturbances, where conventional impossible. Several techniques and methods have been investigated worldwide to support the process control of UCG. Global research focuses on UCG operating parameters stabilize optimize performance underground reactor during energy conversion. paper studies recent field compares individual possibilities for practical application. The advanced that implemented an situ system (e.g., adaptive control, extremum seeking robust control). study investigates ensure desired syngas calorific value maximization. review showed such as sliding mode model predictive most potential, achieve best results despite their complexity. In addition, some through simulation experimentally. aims give reader overview given issue alert practice area.