A chemical engineering consultant for a large refinery complex has been asked to investigate the feasibility of manufacturing 14.4×10-3 kg/s of thiophane, an odorant made from a combination of tetrahydrofuran (THF) and hydrogen sulfide. The essential reaction is: THF+H2S thiophane + H₂O THF is mixed with H2S and reacted over an alumina catalyst at an average temperature of 672 K and pressure of 207 kPa. Since carbon deposition on the catalyst is heavy (4 % of the THF feed), provision for the regeneration of the catalyst must be made. The regeneration is achieved by oxidation by oxygen in the air stream, and nitrogen as the inert stream to clean the regenerated catalysts at 672 K. All inlet streams are at 300 K and 101 kPa. The molar ratio of THF and H2S is controlled at 1:1.5. Eighty percent (80%) conversion in the reactor, and 90% recovery after the reactor are assumed for the process. Follow the steps of the means-end analysis to analyse the process conditions and synthesize a flowsheet for the process. Outline the types of equipment necessary for the process. Data: THF: MW = 72; SG = 0.887; BP = 65 °C; Vapour pressure at 25 °C = 176 mmHg Thiophane: MW = 88; BP = 121 °C. Hint: use the physical and chemical properties to determine the separation methods.