Methanol is produced in the reaction of carbon dioxide and hydrogen: ??2 + 3?2 → ??3?? + ?2? The fresh feed to the process contains hydrogen, carbon dioxide, and 0.8 mol% inert. The reactor effluent passes to a condenser that removes all of the methanol and water formed and none of the reactants or inert. The unused reactants and inert are recycled to the reactor. To avoid buildup of the inert in the system, a purge stream is withdrawn from the recycle. The reactor effluent contains 13.5 mol% CO2, 37.4 mol% H2, 2.9 mol% inert, 23.1 mol% CH3OH and 23.1 mol% H2O. The single pass conversion of hydrogen is 65%. It is desired to produce 125 kmol/h of CH3OH. Calculate the molar flow rate of the feed of reactor.

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Units and Dimensions

Dimensions are the basic concepts of the measurement of quantities. Units are the means of expressing the dimensions. For instance, an area has a dimension of L2 and a unit of m2.