The behavior of Fe2O3/Al2O3 particles as oxygen carriers (OCs) for CO chemical looping combustion (CLC) under different reaction temperatures (700 ◦C, 800 ◦C, 900 ◦C, and 1000 ◦C) were tested in a lab-scale fluidized bed and a thermogravimetric analysis (TGA) unit. The results show that the oxygen carrier presents the highest reactivity at 800 ◦C, even after 30 cycles of redox reaction in a flu...

Laboratory-scale experimental studies have demonstrated that Chemical-Looping Combustion (CLC) is an advanced technology which holds great potential for high-efficiency low-cost carbon capture. The generated syngas in CLC is subsequently oxidized to CO2 and H2O by reaction with an oxygen carrier. In this paper, process-level models of CLC are established in ASPEN Plus code for detailed simulati...

Article history: Received 20 September 2007 Received in revised form 14 May 2008 Accepted 20 May 2008 Available online 29 May 2008

The hydrodynamic and thermochemical characteristics in the coal-direct chemical looping combustion (CLC) process are studied by a self-developed computational fluid dynamics - discrete element method (CFD-DEM) approach featuring particle-scale simulations of collisions, heat mass transfer, drying process, coal pyrolysis, gasification, heterogeneous reactions between gas species oxygen carriers....

Ilmenite (FeTiO3) is an important mineral, formed in igneous and metamorphic rocks, and is the main feedstock for the titanium industry. Ilmenite is also an attractive and inexpensive oxygen carrier for chemical-looping combustion (CLC), one of the most promising technologies to accomplish CO2 capture in power plants [1]. The technique uses solid metal oxides as an oxygen carrier, which transfe...

Chemical Looping Combustion process allows combustion of gaseous, liquid or solid fuels with CO2 capture. The oxygen necessary for can be supplied using lattice (CLC) uncoupling (CLOU) mechanisms. present work studies the effects kaolin addition on CuMn carrier behavior CLC and CLOU processes. was prepared by granulation a composition: 27.2 wt% CuO, 52.8 Mn3O4 20 kaolin. Oxygen release rates fl...

Chemical looping combustion (CLC) is a key technology for oxy-fuel combustion with inherent separation of CO2 from a flue gas, in which oxygen is derived from a solid oxygen carrier. Multi-cycle CLC performance and the product selectivity towards CO2 formation were achieved using mixed oxide of Cu and Mn (CuMn2O4) (Fd3[combining macron]m, a = b = c = 0.83 nm) as an oxygen carrier. CuMn2O4 was p...

Since solid oxide fuel cells (SOFC) produce electricity with high energy conversion efficiency, and chemical looping combustion (CLC) is a process for fuel conversion with inherent CO2 separation, a novel combined cycle integrating coal gasification, solid oxide fuel cell, and chemical looping combustion was configured and analyzed. A thermodynamic analysis based on energy and exergy was perfor...

Chemical-Looping Combustion (CLC) has been suggested among the best alternatives to reduce the economic cost of CO2 capture using fuel gas because CO2 is inherently separated in the process. As gaseous fuels it can be used natural gas, refinery gas or syngas from coal gasification, which may 2 contain different amounts of sulfur compounds, such as H2S and COS. An experimental investigation of t...