Sulphur retention in CFB oxycombustion burning local Spanish fuel: CIUDEN’s experience

One of the most relevant European R&D&d initiatives focusing on Carbon Capture Utilization and Storage (CCUS) is the CIUDEN Carbon Capture and Storage Integral project, supported by the Spanish Government through the Foundation Ciudad de la Energia (CIUDEN). CIUDEN is a public institution created by the Spanish Administration in 2006 and fully conceived for collaborative research, development and demonstration of efficient, cost effective and reliable CCUS and advanced CCT. The Technology Development Centre for CO2 Capture (es.CO2), located in Cubillos del Sil (NW Spain), incorporates advanced equipment for the development of oxycombustion technologies, namely: • Fuel preparation system. • Circulating fluidized bed boiler (CFB up to 30 MWth). • Pulverized coal boiler (PC – up to 20 MWth). • Flue gas cleaning equipment: o Cyclones o Selective Catalytic Reduction (SCR) unit for NOx abattement o Bag filter o System for collection, transport and storage of solids and ashes • Flue gas recirculation (FRG) and oxidants preparation systems. • CO2 compression and purification unit (CPU) • CO2 transport test rig • Auxiliary service systems (oxygen, compressed air, LNG as auxiliary fuel, raw water, demineralised water, cooling water, CO2 as inert fluid, etc)