The analysis of a coal indicates 60 wt% C, 35% H, 2% S, and the balance noncombustible ash. The coal is burned at a rate of 300,000 kg/h, and pure oxygen is fed with 5% in excess. All of the noncombustible ash and 20% of the carbon in the fuel leave the furnace as a molten slag; the remainder of the carbon leaves in the stack gas as CO and CO2; the hydrogen in the coal is oxidized to water, and the sulfur emerges as SO2. The selectivity of C02 to CO production is 5:1. (MW C=12, H=1, S=32.1, O=16). Calculate the flow rate in ft3/min of oxygen not used in this process at 35 psig, and 68F

.

The analysis of a coal indicates 60 wt% C, 35% H, 2% S, and the balance noncombustible ash. The coal is burned at a rate of 300,000 kg/h, and pure oxygen is fed with 5% in excess. All of the noncombustible ash and 20% of the carbon in the fuel leave the furnace as a molten slag; the remainder of the carbon leaves in the stack gas as CO and CO2; the hydrogen in the coal is oxidized to water, and the sulfur emerges as SO. The selectivity of CO2 to Co production is 5:1. (MW C=12, H=1, S=32.1, 0-=16). Calculate the flow rate in ft/min of oxygen not used in this process at 35 psig, and 68F