NDLI: Development of a New Method of Liquid CO2 Injection Into the Seawaters for the Ocean Sequestration

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Yamasaki, Akihiro Tajima, Hideo Kiyono, Fumio Teng, Ho
Copyright Year	2004
Abstract	A new type of injection method of liquid CO2 into the seawaters via a Kenics-type static mixer for the ocean sequestration of CO2 has been developed. Flows of liquid CO2 and water will form a two-phase flow in a pipeline, and introduced to a static mixer, where the two-phase flow is mixed by the agitation effects of the mixing elements equipped in the mixer, and converted into various flow patterns. The following flow patterns were observed depending on the flow velocities; dispersed flow of liquid CO2 drops, flow of CO2 hydrate agglomerates, and flow of CO2 hydrate particles. The results indicate that several options for CO2 injection concerning the form of CO2, size distribution of liquid CO2 drops, could be realized by using the present method. The choice of such options is essential to control the fate of the disposed CO2 and the consequent environmental impact. In this study, application of the present method to the disposal of liquid CO2 at the intermediate depths (500 ∼ 1500 m) is assumed. The formation of the liquid CO2 drops by the static mixer was studied experimentally, and the effect of the static mixer on the size distribution of the liquid CO2 drops was investigated. The mean size of the liquid CO2 drops were significantly reduced by using the static mixer, compared with the case without the mixer for a given flow velocity, and a sharper distribution of the drop size was obtained. Based on the experimental results, the ascending-dissolving fate of the liquid CO2 drops disposed of in the ocean at the intermediate depth was numerically simulated. The shaper distribution and smaller mean diameter of the liquid CO2 drops produced by the static mixer would results in the reduction of both the traveling distances and its dispersion of the disposed CO2 drops.
Sponsorship	Ocean, Offshore, and Arctic Engineering Division
Starting Page	325
Ending Page	330
Page Count	6
File Format	PDF
ISBN	0791837459
DOI	10.1115/OMAE2004-51283
e-ISBN	0791837386
Volume Number	23rd International Conference on Offshore Mechanics and Arctic Engineering, Volume 3
Conference Proceedings	ASME 2004 23rd International Conference on Offshore Mechanics and Arctic Engineering
Language	English
Publisher Date	2004-06-20
Publisher Place	Vancouver, British Columbia, Canada
Access Restriction	Subscribed
Subject Keyword	Water Oceans Two-phase flow Pipelines Particulate matter Carbon dioxide Tertiary petroleum recovery Carbon capture and storage Flow (dynamics) Seawater
Content Type	Text
Resource Type	Article

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