Removal of High Concentration of Hydrogen Sulfide from Methane Using Commercial Polyphenylene Oxide Hollow Fiber and Poly Ester Urethane Urea Flat Membranes

In this work, the H2S/CH4 mixed gas permeation through Polyphenylene oxide (PPO) hollow fiber membrane and Poly (ester urethane) urea (PEUU) flat membrane have been studied. Experiments were carried out to measure the permeate and retentate flow rates at each outlet. The influence of pressure and temperature were taken into consideration. The used pressures and temperatures are 50, 75 and 100 psig and ambient temperature and 40oC, respectively. It was observed that in the concentration range of 968 to 5008 ppm H2S in methane, the permeance of components was affected by the balance between competitive sorption and plasticization effect. The separation factor of H2S/CH4 were in the range of 1.3-2.9, 1.7-3.6, and 2.2-3.4 at the pressure of 50, 75, and 100 psig, respectively. Moreover, the effect of temperature on the performance of PPO membrane was studied. It was observed that the permeability of both components of the mixtures increased with increasing temperature. The results obtained by PEUU membrane indicated that it was a better choice to separation of hydrogen sulfide from H2S/CH4 mixtures than PPO.

کلیدواژه ها:

Gas separation process ، Polyphenylene oxide hollow fiber membrane ، Poly ester urethane urea flat membrane ، Hydrogen sulfide ، Plasticization effect