In 2013, there was a booming natural gas business, from fracking \& off-shore gas drilling, with potential to lower costs of energy (including electricity production). A natural gas processing plant is to separate natural gas into an ethane stream, a propanebutane stream, and a sales gas stream that is mainly methane. The natural gas feed is 4.5103 kgmol/h, and the composition is 75,13,8 and 4mol percent methane, ethane, propane, and n butane, respectively. The ethane product stream contains 1.25mol percent methane, 2.5mol percent propane, and negligible butane. The propane product stream contains all the butane, 3.5 mol percent ethane, and negligible methane. The sales gas contains 0.75mol percent ethane, and the rest is methane. (a) Draw a simple block flow diagram for this process. (b) Calculate the flow rate of each product stream. (c) Find the monetary values of the streams using the following costs: Data: You are also given the following data: (d) Estimate the cost of separation, in dollars per hour, at which the sales revenue subtract the sum of raw material cost and separation cost equals zero for this process