Adsorption Accumulation of Liquefied Natural Gas Vapors.

Adsorption isotherms of methane on AUK, АU-1, and Р-300 active carbons, which possess completely different structural-energy characteristics at the temperatures of 120, 160, and 180 K and pressures of up to 6 bar, as well as the dependences of the specific amount of accumulated methane on these adsorbents on pressure, have been calculated based on the Dubinin's theory of volumetric filling of micropores. Optimal carbon adsorbent has been chosen for storage of the liquefied natural gas vapors derived from the results. The dependences of differential molar isosteric heat of methane adsorption on the adsorption value at various temperatures have been calculated and plotted for these adsorption materials. An approach to the retention of excess vapor volume that is formed upon storage of liquefied natural gas using adsorption accumulation has been suggested. [ABSTRACT FROM AUTHOR]