Polygeneration is the process of combining multiple utility outputs with one or more input(s) in a single integrated unit. The integration is towards a higher energy efficiency as well as environment friendliness. Fossil fuels, specifically coal, will continue as the prime source of energy for a considerable future. However Carbon-dioxide emissions from coal based plants has serious „climate ch...

Planning of coal hydrogenation processes, such as liquifaction and gasification, requires consideration of public health implications. Commercial plants will require coal quantities greater than or equal to 20,000 tons/day and the large size of these plants calls for careful consideration of the potential health hazards from the wastes and products of such processes. Analysis of pollution poten...