Abstract
An analysis of clean coal technologies for the recovery of energy from Nigerian coals was
carried out. The coal mines studied are Onyeama, Ogwashi, Ezimo, Inyi, Amasiodo, Okaba,
Lafia-Obi, Owukpa Owukpa, Ogboyoga and Okpara. The estimated reserves of the ten coal
deposit amount to 2.1 Gt, which is about 84 % of the total coal reserves of the country 2.5 Gt
of coal Nigeria. The key clean coal technologies studied are Ultra-Supercritical Combustion
(USC), Supercritical-Fluidised Bed Combustion (FBC), Integrated Gasification Combined
Cycle (IGCC) and Coal bed Methane (CBM) and the results were compared with conventional
subcritical pulverised fuel combustion (PF). The total potential energy recovery from these
technologies are: PF 5800 TWh, FBC 7250 TWh, IGCC 7618 TWh, and USC 8519 TWh. This
indicates an increase of about 31% in the total electricity generation if USC technology is used
instead of the conventional sub-critical PF technology...