Ali Farsi, Vahid Shadravan, Seyed Soheil Mansouri, Gholamreza Zahedi and Zainuddin Abdul Manan
In this work, a multifunctional reactor in which oxidative coupling of methane (OCM) and steam re-forming of methane steam re-forming of methane (SRM) reactions take place simultaneously was modeled. The possible reaction scheme may be described as a pyramid with square cross-section in which diameter was drawn. Methane is at the head of the pyramid, and the products such as C2+, COx, H2, and water are arranged at angles. This possible reaction scheme is illustrated in the succeeding figure that shows the details of combining reactor occurrences. The results were obtained in a wide range of different conditions including inlet feed, inlet temperature, portions of SRM and OCM reactions' catalysts, and inlet velocity. In selection of the catalysts, more attention was drawn to prevent re-forming of OCM products. The main parameters of each reaction under different conditions such as conversion of the feed components, selectivity of products, yield of products, and temperature in the length of reactor as well as each component's concentration in the reactor were considered in course of this study. The results revealed that simultaneous OCM and SRM reactions in one reactor will tend to be auto-thermal, and its advantages were discussed. Complete conversion of water and majority of methane and oxygen will reduce the amount of unwanted products at the reactor's discharge–a constraint that exists in single reactors of each reaction specially OCM.