CO₂ Transportation via Hydrates and Liquefaction: Technical Analysis and Comparison

DOI

10.2991/aer.k.201229.020How to use a DOI?

Keywords

CO2 transportation, gas hydrate, liquefaction, technical analysis

Abstract

Carbon capture, utilization, and storage (CCUS), has been deemed an essential component for climate change mitigation. Commercialization of CCUS requires an efficient transportation method of the captured carbon dioxide (CO2). Previous works have investigated the technological aspects for conventional CO2 transportation by pipelines and ships, along with the risk and security issues. Transportation of CO2 through gas hydrates is extremely attractive alternative as 1m3 of hydrate may contain 150-180Sm3 of CO2. However, the industries are hesitant to implement the gas hydrate technology for CO2 transportation as there is a lack of pilot studies proving the applicability. This work aims to make a feasibility study on the gas hydrate-based CO2 transportation. The technical analysis has been performed in terms of CO2 storage capacity, utility costs, CO2 handling method and the costing for loading and offloading carrier. The results have been compared with CO2 transportation through liquefaction method. Calculations have shown that for a 1m3 ship capacity, 867.97 moles of CO2 can be transported as hydrates, and about 24,553.73 mols of CO2 can be transported in liquefied state. Thus, in terms of volume it is considered not feasible to transport CO2 as hydrates. However, comparing other factors, it is found that CO2 hydrates-based transportation is a better option than liquefaction for sources with lower emissions as involved CAPEX and OPEX is lower as compared to liquefying the similar amount of CO2.

Copyright

© 2020, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Manvindeep Kaur
AU  - Jai Krishna Sahith
AU  - Vinayagam Sivabalan
AU  - Bhajan Lal
PY  - 2020
DA  - 2020/12/30
TI  - CO₂ Transportation via Hydrates and Liquefaction: Technical Analysis and Comparison
BT  - Proceedings of the Third International Conference on Separation Technology 2020 (ICoST 2020)
PB  - Atlantis Press
SP  - 138
EP  - 145
SN  - 2352-5401
UR  - https://doi.org/10.2991/aer.k.201229.020
DO  - 10.2991/aer.k.201229.020
ID  - Kaur2020
ER  -