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Publication No: EP4565865 [Europe] Application No: EP23787973
Title: An efficient volumetric high pressure adsorption isotherm apparatus and a process thereof
Publication Date: 11-06-2025 File Date: 11-04-2023
Inventor(s): Debadutta Mohanty; Sujoy Chattaraj
IPC Classification: G01N 15/08, G01N 7/04
Abstract:
The present invention discloses an apparatus and process for measuring the maximum gas adsorption/desorption capacity of a powdered solid sample, particularly coal/shale, by volumetric method. It is innovative in a way that it can perform adsorption/desorption isotherm measurements for a set of four samples simultaneously, where four separate channel has been fabricated through a single gas injection point. As the natural adsorbent samples may be from different burial depths, the apparatus is capable of carrying out adsorption/desorption measurements simultaneously on four samples at different temperatures corresponding to their depth through a compartmentalized water bath system. Apart from that, the apparatus can measure adsorbed gas capacity up to a very high pressure of 40 MPa replicating the reservoir depth up to 4000 m. Moreover, sample vessels are also able resist 6000 Psi pressure. The apparatus is also enabling to handle the toxic, reactive and highly flammable gases. Mentioning high temperature with an accuracy of 0.1oC is another unique feature of the present invention. The apparatus finds its application for the gas storage capacity and recoverable reserve estimation for CBM, Shale gas and CO2 geo-sequestration projects.
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