Mohamed Kanniche

Technico-economic feasability study of CO2 capture, transport and geo-sequestration part 2: A case study for france

Publisher Summary This chapter presents the results of technical and economic studies with various organizations in order to evaluate the future production cost of electricity from coal integrated gasification combine cycle (IGCC) power plants with CO2 capture and sequestration and the resulting cost per ton of CO2 avoided. It aims at performing a realistic approach of the energy penalty due to the integration of CO2 capture in IGCC power plants as well as a realistic evaluation of the transport and storage costs taking into account the topography for the CO2-transport pipeline and the reservoir characteristics for the CO2 storage. The two power plants are supposed to be located close to the French cities of Nantes and Metz. This corresponds to a traditional localization for coal power plants in France, but does not necessarily constitute the optimal situation with respect to the storage zones of CO2 and to the constraints of fuel supply. Concerning the CO2 capture, six physical and chemical absorption processes were modeled with the aspen plus TM software.

Technico-economical feasibility study of CO2 capture, transportation and geo-sequestration: A case study for France part 1: Comparison of the CO2 capture options in IGCC system

Publisher Summary The removal of CO2 from gas streams can be achieved by a number of separation techniques including absorption into a liquid solvent, adsorption onto a solid, cryogenic separation, and permeation through membranes. Among these techniques absorption into a liquid solvent is the most suitable process for a high volume of synthesis gas streams. This chapter is devoted to the energy assessment of carbon dioxide removal in an existing Integrated Gasification Combined Cycle (IGCC) plant based on an oxygen blown entrained flow gasifier operating at 27 bar, removal of acid gas (H2S) in a MDEA unit, and a 53% efficiency combined cycle. A carbon dioxide separation process conveniently integrated in a pre-combustion separation is chosen in order to take advantage of the high pressure of the gas. In the first step six appropriate CO2 removal systems are selected from existing processes in industrial area. In the second step, simulations are performed for the six CO2 separation processes, using the Aspen Plus™ software. In the third step three processes are selected and integrated, as realistically as possible, to the IGCC. Finally, energy consumption is analyzed and overall efficiency of the IGCC with CO2 capture is evaluated.