Although climate change can be efficiently curbed by shifting to low-carbon (blue) hydrogen as an energy carrier to achieve carbon neutrality, current hydrogen production mainly proceeds via the gray pathway, i.e., generates large amounts of CO2 as a byproduct. To address the need for cleaner hydrogen production, we herein propose novel CO2 capture processes based on the integration of vacuum pressure swing adsorption into a gray hydrogen production process and perform retrofitting to a blue hydrogen production process for on-site hydrogen refueling stations. Techno-economic analysis reveals that the implementation of the proposed capture processes allows one to significantly reduce CO2 emission while preserving thermal efficiency, and the economic feasibility of this implementation in different scenarios is determined by computing the levelized cost of hydrogen. As a result, blue hydrogen is shown to hold great promise for the realization of sustainable energy usage and the net-zero transition.
|Journal||Journal of Environmental Chemical Engineering|
|Publication status||Published - 2023 Apr|
Bibliographical noteFunding Information:
This work was supported by the Korea Institute of Industrial Technology within the framework of the ‘Development of AI Platform for Continuous Manufacturing of Chemical Process’ [Grant number JH-23-0002 ]; and ‘Development and Application of Industry 4.0 Technology for Process Intensification’ [Grant numbers UR-22-0030 , IZ-22-0051 ].
© 2023 The Authors
All Science Journal Classification (ASJC) codes
- Chemical Engineering (miscellaneous)
- Waste Management and Disposal
- Process Chemistry and Technology