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- W3204222350 endingPage "132606" @default.
- W3204222350 startingPage "132606" @default.
- W3204222350 abstract "• The modelling and integration of dynamically operated chemical looping and PSA is presented. • 8 beds PSA and 3 beds CLR are required for 130 Nm3/h H2 with > 98% CO2 capture. • Chemical looping performance are not affected by the dynamic behavior of the PSA. • Heat losses in chemical looping are mitigated by changing the heat management. The design of a fully integrated Chemical looping reforming (CLR), single adiabatic water gas shift reactor (WGSR) and Pressure swing adsorption (PSA) operated under dynamic conditions for small scale H 2 generation with inherent pure CO 2 production is carried out. The dynamically operated packed bed reactors taking part in the chemical looping process have been modelled, designed and simulated to operate with transient feeds from an integrated PSA unit used for the production of 130 Nm 3 /h of pure H 2 (99.9999% purity). As by-product, 51 Nm 3 /h of pure CO 2 (>98.8% purity) is also produced. A rapid cycle 8-bed configuration increases the H 2 recovery by 4% whilst reducing the tail gas buffer tank volume requirement by 44%. The effect of the PSA dynamic tail gas composition used as fuel for the CLR reduction reactor stage was found negligible regarding the continuity of the process and the performance of the plant, as it affected only the reduction outlet gas composition profile but had little effect on the reactor bed temperature profile. With respect to the design of the chemical looping reactor beds, an analysis has been performed on the effect of heat losses showing that at higher heat transfer coefficient ( U = 5.0 W∙m −2 ∙K −1 ) CH 4 conversion decreased significantly (≈90% compared to adiabatic operation), therefore a different strategy was implemented. The overall study demonstrates the process design feasibility for producing blue H 2 or renewable H 2 from methane/bio-methane in decentralised and modular units." @default.
- W3204222350 created "2021-10-11" @default.
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- W3204222350 date "2022-01-01" @default.
- W3204222350 modified "2023-09-30" @default.
- W3204222350 title "Dynamic behaviour of integrated chemical looping process with pressure swing adsorption in small scale on-site H2 and pure CO2 production" @default.
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- W3204222350 doi "https://doi.org/10.1016/j.cej.2021.132606" @default.
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