Integration of coal gasification and packed bed CLC for high efficiency and near-zero emission power generation

Energy analysis of two stage packed-bed chemical looping combustion configurations for integrated gasification combined cycles

“…2. A detailed power plant scheme, extended description, detailed mass balance and an overview of the assumptions can be found in Spallina et al [2]. In this work, a global description is given of the gasification section, while the CLC section is discussed in more detail.…”

“…So, the total reaction enthalpy is the same as with regular fuel combustion. Such a system, thanks to the intrinsic separation of the CO 2 reaction product, leads to a higher electrical efficiency of the complete plant with respect to most of the other carbon capture technologies [1,2].…”

“…The electrical efficiency for IGCLC plants has been calculated by several researchers, based either on fluidized bed [1,5e7] or packed bed [2] CLC processes. Erlach et al [1] and Spallina et al [2] also compared the performance of IGCLC plants using nickel and ilmenite respectively as oxygen carriers with benchmark plants, demonstrating that in an IGCLC power plant a higher electrical efficiency can be obtained than with conventional pre-combustion CO 2 capture. Improvements by 3e5 percentage points have been reported in these works [1,2].…”

“…Erlach et al [1] and Spallina et al [2] also compared the performance of IGCLC plants using nickel and ilmenite respectively as oxygen carriers with benchmark plants, demonstrating that in an IGCLC power plant a higher electrical efficiency can be obtained than with conventional pre-combustion CO 2 capture. Improvements by 3e5 percentage points have been reported in these works [1,2]. The packed bed and the circulating fluidized bed configurations for CLC have been compared as well resulting in minor differences regarding the overall process efficiency [8].…”

“…The low reactivity of ilmenite can be circumvented by carrying out the reduction just after the oxidation when the bed is at high temperature and then performing the heat removal on the reduced bed by means of a N 2 stream [14]. Spallina et al showed that a high efficiency can be obtained in this case by means of a semi-closed N 2 -based gas turbine cycle for power generation [2].…”