COST COMPARISON IN VARIOUS CO2 OCEAN DISPOSAL OPTIONS

CO2 ocean disposal is one of several ways proposed to mitigate the gre enhouse gas effect. In this paper, we estimate the cost of various CO2 disposal options. The system consists of a conventional pulverized co al power plant, CO2 separation using an amine scrubber, liquefaction a nd transportation. In this investigation, the power plant and the CO2 separation plant are common. The liquefaction process and transportati on systems are different. We evaluate the costs of pipeline, liquid CO 2 tanker for CO2 lake, liquid CO2 tanker dispersion, dry ice tanker an d CO2 dispersion by OTEC. The effect of distance between a power plant and the disposal site, plant size, and plant efficiency on the cost f or each case is evaluated. Costs of ocean disposal options are estimat ed about 90 to 180 per tonne of CO2 avoided. The least cost transporta tion option is dependent on the distance between power plant and site. (C) 1997 Elsevier Science Ltd.