Group 1: Production of ammonia The feed for ammonia process is 100 lb mol/h nitrogen, 300 lb mol/h hydrogen and small am

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Group 1 Production Of Ammonia The Feed For Ammonia Process Is 100 Lb Mol H Nitrogen 300 Lb Mol H Hydrogen And Small Am 1 (45.61 KiB) Viewed 36 times

Group 1: Production of ammonia The feed for ammonia process is 100 lb mol/h nitrogen, 300 lb mol/h hydrogen and small amount of carbon dioxide (1 lb mol/h) initially at 80°F and 300 psia. The process feed is compressed to 4000 psi with an isentropic compressor. The stream is mixed with the recycle stream and then it is heated to 900°F to enter the reactor. In the reactor there is a pressure drop of 30 psi. The feed to the reactor is roughly a 3:1 mixture of hydrogen and nitrogen, with some ammonia too. The reaction is limited by equilibrium considerations, so the conversion is not known. You must determine it by solving the equilibrium equation (using RGibbs). The pressure is high because that favors the reaction. The temperature is also high in order to get the fast reaction, even though this limit the conversion in the reactor. The output from the reactor is cooled to 80°F and sent to a vapor liquid separator, where the temperature is lowered. Thus, most of the ammonia condensed and is removed as liquid. The vapor phase goes to recycle and 0.01% of it is used as purge. A recycle compressor then compressed the rest from 3970 to 4000 psia before the recycle stream is mixed with the feed. NRTL thermodynamics was chosen in the simulation. Determine the purity of the ammonia liquid.