Adsorption of hydrocarbons by activated carbon (AC) has been the subject of recent development and advancement. One of the applications of this technology is in the capture of planned blowdown gases for the purpose of reducing greenhouse gas emissions. A conceptual design of a large AC-based adsorbed natural gas (ANG) storage system has been configured to capture at least 35–40% of the blowdown gases released from high pressure (60 bar) facilities. This design consists of 46 × 14 diameter pipe modules mounted on a trailer. A smaller ANG unit consisting of a standard gas cylinder or a pressure vessel filled with AC has also been designed to capture blowdown gases from small-volume systems such as compressor casings. The performance of both storage units has been evaluated numerically, and important design parameters are quantified for a given range of operating conditions. Results of this evaluation and future work are highlighted.

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