Experimental study of separating CH₄/N₂ by using Ti modified activated carbon

For methane (coal mine ventilation air methane) enrichment and separation, Ti modified method of activated carbon adsorption material (AC) was studied. The effect on separation performance of CH₄/N₂ was discussed. The results show that pore diameter distribution of Ti modified activated carbon after roasting at 1100°C and N₂ protection is more uniform; CH₄ adsorption quantity reaches 34.4 mL/g and increases 51.5% compared with unmodified activated carbon and Ti modified activated carbon at 160°C hydrothermal method; CH₄ breakthrough point of atmospheric breakthrough curve lags 41% and 50% respectively compared with unmodified activated carbon and Ti modified activated carbon at 160°C hydrothermal method.