To address the global warming challenge, CO2 hydrogenation emerges as a promising pathway for converting CO2 into valuable chemicals such as CH4, CO, and CH3OH through a thermocatalytic process. Among carbon capture, utilization and storage (CCUS) technologies, integrated CO2 capture and utilization (ICCU) coupled with the reverse water–gas shift (RWGS) reaction has emerged as a promising approach for achieving carbon neutrality. This method offers the production of syngas for the Fischer–Tropsch process and the capture of CO2 from industrial flue gas. However, the scalability of ICCU in handling large volumes of industrial flue gas is hindered by limited understanding, particularly under fluidized conditions. This study utilized a continuous feedstock system in a fluidized bed to achieve practical CO2 capture in large flue gas volumes (5 L/min), simultaneously hydrogenating with green H2 to produce syngas. Results demonstrated a hydrogen-to-carbon ratio of 1.0-2.0 with 50% H2 for 2 hours at 900°C in the hydrogenation stage, with nearly 90.1% of limestone converted to CaO. In the subsequent carbon capture stage, 98% CO2 was effectively captured by hydrogenated CaO sorbent, with nearly 70.5% of hydrogenated CaO converted to CaCO3. Furthermore, five-cycle carbonation-hydrogenation tests showed remarkable stability with an H/C ratio of 1.5, carbon capture efficiency of 98%, and ~100% CO selectivity. The eco-friendly, low-cost limestone supports the effectiveness of ICCU approaches for further commercialization.