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Natural Gas Storage - Viability as Hydratesb
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, 1st Geoscience & Engineering in Energy Transition Conference, Nov 2020, Volume 2020, p.1 - 5
Abstract
Summary
Gas Hydrates or Clathrate Hydrates are crystalline solids, its unit cell consists of a gas molecule (Methane in context of Natural Gases) surrounded by water molecules and the crystalline structure is stabilized by the presence of gas molecule within the cage of water molecules around it. Experiments have proved that Methane Hydrates remained stable and did not decompose when stored at temperatures in the range of -15°C to -5°C, at atmospheric pressure whereas LNG needs to be stored at -162°C. Also, one litre of fully saturated Methane Clathrate contains around 169 litres of methane gas at 0°C and 1 atm, thus requires less volume for storage. In laboratories Methane Clathrates have been successfully produced in stirred vessels at pressure from 2 to 6 MPa and temperatures ranging from 0 to 20°C, thus making it feasible for conversion of Natural Gas into Hydrates and storing them, which can be later used during peak demands. Better stability and reduction of storage cost makes Clathrate Hydrates a compelling alternative to LNG and operating costs can be reduced. This technical paper aims to provide an insight into LNG alternative Hydrates and its feasibility.
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