Abstract
The techno-economic evaluation of four novel integrated gasification combined cycle (IGCC) power plants fuelled with low rank lignite coal with CO 2 capture facility has been investigated using ECLIPSE process simulator. The performance of the proposed plants was compared with two conventional IGCC plants with and without CO 2 capture. The proposed plants include an advanced CO 2 capturing process based on the Absorption Enhanced Reforming (AER) reaction and the regeneration of sorbent materials avoiding the need for sulphur removal component, shift reactor and/or a high temperature gas cleaning process. The results show that the proposed CO 2 capture plants efficiencies were 18.5–21% higher than the conventional IGCC CO 2 capture plant. For the proposed plants, the CO 2 capture efficiencies were found to be within 95.8–97%. The CO 2 capture efficiency for the conventional IGCC plant was 87.7%. The specific investment costs for the proposed plants were between 1207 and 1479 €/kW e and 1620 €/kW e and 1134 €/kW e for the conventional plants with and without CO 2 capture respectively. Overall the proposed IGCC plants are cleaner, more efficient and produce electricity at cheaper price than the conventional IGCC process.
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