SETK1123 - Fundamentals of Mass Balance - Science Assignment Help

Assignment Task

Question 1
Ammonia gas (NH3) can be utilised as a reliable analytical methods to determine the flow rate of other gases in pipeline. To measure the flow in a natural gas pipeline, pure ammonia gas is injected into the pipeline at a constant rate of 4252.94 mol/min. Five miles downstream from the injection point, the steady-state ammonia concentration is found to be 0.382 weight %. The gas upstream from the point of ammonia injection contains no measurable ammonia. Molecular Weight: N = 14 g/mol, O = 16 g/mol, C = 12 g/mol and H = 1 g/mol.
(a) Draw and completely label the flow chart for this operation.
(b) How many kilograms of natural gas are following through the pipelines per second?
 

Question 2
An evaporator is used to concentrate cane sugar solutions. A feed of 20,000 lbm/day of a solution containing 0.38 kg sugar/kg is evaporated, producing a concentrated solution containing 0.78 lbm sugar/lbm.
(a) What is the separating agent of this unit process?
(b) Draw and label the flow chart of this process completely
(c) Calculate the weight of the solution produced and the amount of water removed (kg/hr)
(d) Perform calculation and analyze the flowrate of concentrated solution produced if the same separation process with a continuous feed of 30,000 kg/day is used.
 

Question 3
Consider the following process for recovering NH3 from a gas stream composed of N2 and NH3 (see figure in the next page). Flowing upward through the process is the gas stream, which can be contain NH3 and N2 but not solvent S, and flowing downward through the device is a liquid stream which can contain NH3 and liquid S but not N2. The weight fraction of NH3 in the gas stream A leaving the process is related to the weight fraction of NH3 in the liquid stream B leaving the process by the following empirical relationship.

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