Science and Technology · Energy Technology and Chemical Engineering

Consider the following statements regarding coal gasification: I. Integrated coal gasification-based power systems are invariably more water-intensive than subcritical pulverised coal-based thermal plants, regardless of the technology configuration adopted. II. In coal gasification, coal is converted under limited oxidation conditions into a combustible gas mixture, with oxygen and/or steam commonly acting as the gasifying medium. III. Underground Coal Gasification can, under suitable geological conditions, enable the recovery of energy from coal deposits that are otherwise difficult or uneconomic to mine by conventional methods. How many of the statements given above are correct?