بررسي ذخيره‌سازي گاز طبيعي به روش جذب سطحي و تشكيل هيدرات در جاذبهاي كربني مرطوب

Review on Natural Gas Storage with Adsorption and Hydrate Formation Within Wet Adsorbent

Natural gas hydrate is formed within pores of porous adsorbents such as activated carbon at low temperature (around 0 °C) and relative high pressure (3.5-4 MPa). Amount of adsorbate on wet adsorbent is lower than dry adsorbent at low pressure. This amount is changed with adsorption pressure and moisture content. Maximum gas adsorption is taken place in the optimum moisture ratio which is around unit for all hydrate structure. Using some additives cases deceasing hydrate formation pressure, adjustment of hydrate formation and dissociation rate and increasing adsorption gas amount. In addition, hydrate formation affects on heat of adsorption and therefore improves the gas adsorption capacity.