Synergy of carbon capture, waste heat recovery and hydrogen production for industrial decarbonisation.

[Display omitted] • Calcium looping (CaL) captures carbon dioxide and waste heat from industrial flue gases. • Methane dry reforming (MDR) produces blue hydrogen with high thermal energy penalty. • Synergy of MDR and CaL shows huge potentials for industry decarbonisation. • Major challenges are catalyst deactivation, sorbent sintering and system integration. Industry is the biggest sector of energy consumption and greenhouse gas emissions, whose decarbonisation is essential to achieve the Sustainable Development Goals. Carbon capture, energy efficiency improvement and hydrogen are among the main strategies for industrial decarbonization. However, novel approaches are needed to address the key requirements and differences between sectors to ensure they can work together to well integrate industrial decarbonisation with heat, CO 2 and hydrogen. The emerging Calcium Looping (CaL) is attracting interest in designing CO 2 -involved chemical processes for heat capture and storage. The reversibility, relatively high-temperature (600 to 900 °C) and high energy capacity output, as well as carbon capture function, make CaL well-fit for CO 2 capture and utilisation and waste heat recovery from industrial flue gases. Meanwhile, methane dry reforming (MDR) is a promising technology to produce blue hydrogen via the consumption of two major greenhouse gases, i.e., CO 2 and CH 4. It has great potential to combine the two technologies to achieve in-situ CO 2 utilization with multiple benefits. In this paper, progresses on the reaction conditions and performance of CaL for CO 2 capture and industrial waste heat recovery, as well as MDR were screened. Secondly, recent approaches to CaL-MDR synergy have been reviewed to identify the advantages. The major challenges in such a synergistic process include MDR catalyst deactivation, CaL sorbents sintering and system integration. Thirdly, the paper outlooks future work to explore a rational design of a multi-function system for the proposed synergistic process. [ABSTRACT FROM AUTHOR]