(225aa) Adsorbed Natural Gas Storage - Modeling for Heat Management at Industry Scale

The objective of this presentation is to present different possible scenarios of heat removal for adsorbed natural gas storage (ANG) technology. Efficient removal of heat generated by adsorption is essential for fully utilizing the designed storage capacity of an adsorber vessel. To address this issue adsorption isothermal model was developed based on Adsorption Potential theory. Isosteric heat of adsorption and integral heat of adsorption were calculated as the base of internal heat generation rate during adsorption process. The temperature profile of the adsorber bed at the end of the charging process was simulated using a cylindrical coordinate system to mimic an ANG adsorber vessel having the length of 15 meter and the diameter of 1.42 meter (natural gas pipeline with 56 inch diameter). The results showed that improved thermal conductivity of adsorbents combined with cooling jacket (e.g., central tube or cooling coil) can achieve of 95% or more of the designed storage capacity. These results demonstrated that ANG is an industrially applicable technology by proper heat management to maintain its design capacity.