SHIPPING METHOD FOR CO2 STORAGE AND IMPORT OF CNG
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United States of America Patent
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Issued Date -
Oct 9, 2014
app pub date -
Aug 17, 2012
filing date -
Aug 18, 2011
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Abandoned
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Abstract
Disclosed is a method of transporting CO2 by ship for the purpose of storage in the ocean. The CO2 is transported at a temperature between −25° C. and +25° C., and under a pressure that is sufficiently high for the CO2 to be in a liquid or supercritical state. The choice of temperature/pressure conditions for the CO2 enables the transport of CO2 one way to be effectively combined with transport of compressed natural gas (CNG) the other way. Ships can be used that have relatively cheap tubular containment equipment similar to the type normally used for CNG but with lower pressure and not subject to cyclic thermal and mechanical effects of pressurizing and depressurizing.
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