Objective
Objectives: The project aims on developing a dry CO2 capture system for atmospheric and pressurized fluidized bed boilers. The atmospheric option will be developed towards a pilot plant application. For the pressurized option the project seeks for a proof of principle to determine if the advantages of a pressurized capture system can balance the problems known from existing PFBC systems. The quantifiable objectives are: - Low CO2 capture costs (<20 Euro/t for atmospheric, <12 Euro/t for pressurized sy stems) - Acceptable efficiency penalty for CO2 capture (<= 6% nel). - >90% carbon capture for new power plants and >60% for retrofitted existing plants - A purge gas stream containing >95% CO2 - A solid purge usable for cement production - Sim ultaneous sulphur and CO2 removal with sulphur recovery option Approach: Limestone is a CO2 carrier. The CO2 can be released easily in a conventional calcination process, well known in the cement and lime industry. By integrating a closed carbonation/calc ination loop in the flue gas of a conventional CFB-boiler, the CO2 in the flue gas can be removed. The heat required for calcination is released during carbonation and can be utilised efficiently (high temperature) in the steam cycle of the boiler. Concent rated CO2 can be generated when using oxygen blown calcination. Because the fuel required for supplying heat for calcination is only a fraction of the total fuel requirements, the required oxygen is only about 1/3 of the oxygen required for oxyfuel process es. The work programme: 1.Definition of the technical and economic boundary conditions 2.Selection and improvement of sorbent materials 3.Lab scale and semi-technical scale process development (experimental work) 4.Technical and economic evaluation 5.Des ign of a 1 MWth Pilot plant
Fields of science
- engineering and technologyenvironmental engineeringenergy and fuelsfossil energycoal
- natural scienceschemical sciencesinorganic chemistryalkaline earth metals
- natural scienceschemical sciencesorganic chemistryamines
- natural sciencesearth and related environmental sciencesatmospheric sciencesmeteorologyatmospheric pressure
- engineering and technologyenvironmental engineeringcarbon capture engineering
Call for proposal
FP6-2004-ENERGY-3
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