Coal chemical-looping gasification of Ca-based oxygen carriers decorated by CaO

Multicycle investigation of a sol‐gel‐derived Fe2O3/ATP oxygen carrier for coal chemical looping combustion

“…Gu et al found that with K 2 CO 3 loadings in iron ore of 20%, the peak value of the carbon conversion rate reached 32.9%/min at 3 min, which was 8.6 times higher and 6 min earlier than that for the iron ore without a K 2 CO 3 loading. Guo et al investigated the reactivity of CaO‐modified CaSO 4 oxygen carriers and Fe 2 O 3 oxygen carriers in a coal CLG process. They discovered that the CaO‐modified oxygen carriers could efficiently improve the carbon conversion in the fast reaction stage and decrease the amount of time required to achieve the same conversion.…”

Development and Particle Scale Modeling of Metal Oxide Oxygen Carriers in Chemical Looping Applications

“…In addition to exploring topics of CLC, kinetics for a novel coal gasification concept was explored. Coal gasification is an important technology because of its multifaceted nature as an energy producer and the useful chemical products that can be derived from the processing technique [9]. Synthesis gas generated from coal gasification can be used for several purposes ranging from energy generation and hydrogen production [10] to MTH (methanol-to-hydrocarbon)…”

“…Similarly, with the increase in shale gas availability the need for efficient conversion technologies has sparked interest in the utilization of Chemical looping concepts for partial oxidation applications [14]. A resurgence of interest in the use of solid fuels such as coal, biomass, and derived cokes for the generation of synthesis gas have occurred due to the emergence of novel technologies such as Chemical Looping Gasification (CLG) [9] [13][14][15][16]. Technologies such as CLG arose from parent process concepts, Chemical Looping Combustion (CLC).…”

“…Technologies such as CLG arose from parent process concepts, Chemical Looping Combustion (CLC). Researchers have sought to achieve gasification of solid fuels with this technology through the use of Nickel-based ferrites [15], Calcium sulfates [9], Calcium oxide decorated Iron oxide [13]. Ba-Ferrites and Ca-Ferrites have also shown favorability for this application [16].…”

“…Advanced combustion concepts such as Chemical Looping Combustion (CLC) arose as a bridging technology for clean fuel combustion in energy production with inherent CO2 capture, while standing out as a cost-effective and efficient alternative [2]. Chemical-looping combustion (CLC) is a novel combustion technology [3][4][5][6][7][8][9] that utilizes an oxygen carrier, such as a metal oxide, to transport oxygen from the air to the fuel, inherently avoiding direct contact between fuel and air.…”