Estimation of CO2 Storage Capacity in the Real Sub-Seabed Sediments by Gas Hydrate - Journal of Flow Control, Measurement & Visualization

JFCMV > Vol.6 No.2, April 2018

Estimation of CO₂ Storage Capacity in the Real Sub-Seabed Sediments by Gas Hydrate ()

HTML XML

Download as PDF (Size: 1965KB) PP. 82-94

DOI: 10.4236/jfcmv.2018.62008 848 Downloads 1,669 Views Citations

Author(s)

Tao Yu^1,2*, Toru Sato¹, Abuliti Abudula²

Affiliation(s)

¹Department of Ocean Technology, Policy, and Environment, University of Tokyo, Kashiwa, Japan.
²Graduate School of Science and Technology, Hirosaki University, Hirosaki, Japan.

ABSTRACT

Beyond conventional methods for CO₂ capture and storage, a promising technology of sub-seabed CO₂ storage in the form of gas hydrate has come into the limelight nowadays. In order to estimate CO₂ storage capacity in the real sub-seabed sediments by gas hydrate, a large-scale geological model with the radius of 100 m and the thickness of 160 m was built in this study, and the processes of CO₂ injection and CO₂ hydrate formation in the sediments with two-phase flow were simulated numerically at three different injection rates of 10 ton/day, 50 ton/day, and 100 ton/day for an injection period of 150 days. Then, the evolutions of CO₂ reaction, free CO₂, and hydrate formation over time were analyzed quantitatively, and the spatial distributions of the physical properties in the sediments were presented to investigate the behaviors of CO₂ hydrate formation in the sediments with two-phase flow. For CO₂ storage capacity, a total amount of 15,000-ton CO₂ can be stored safely in the sediments at the injection rate of 100 ton/day for 150 days, and a maximum amount of 36,500-ton CO₂ could be stored in the sub-seabed sediments per year for a CO₂ storage reservoir with the thickness of 100 m. For the practical scenario, an average value of 1 ton/day/m could be used to determine the actual injection rate based on the thickness of the real sub-seabed sediments.

KEYWORDS

CO₂ Capture and Storage, Sub-Seabed CO₂ Storage, CO₂ Hydrate Formation, Two-Phase Flow, Sub-Seabed Sediments, CO₂ Storage Capacity

Share and Cite:

Yu, T. , Sato, T. and Abudula, A. (2018) Estimation of CO₂ Storage Capacity in the Real Sub-Seabed Sediments by Gas Hydrate. Journal of Flow Control, Measurement & Visualization, 6, 82-94. doi: 10.4236/jfcmv.2018.62008.

Journals Menu

Follow SCIRP

	+1 323-425-8868
	customer@scirp.org
	+86 18163351462(WhatsApp)
	1655362766

	Paper Publishing WeChat

Journals Menu

Home

About SCIRP

Service

Policies