Natural gas stream contains 90 mol% methane and the balance H,S. The stream flowing at a molar flow rate of 100 mol/min and 25°C enters a combustor chamber. Water in the shell side of the combus- tor is supplied to maintain the combustor exit stream temperature at 25°C. If 50% excess air is used for the combustion, what is the molar flow rate of the gases leaving the combustion process and what is the heat released from the combustor? (-77,395 kJ/min) The stream is burned completely where the following two reactions take place: 9.8 CH4 +202 → CO2 + 2H2O H,S +1.502 → H2O+SO2

A process flow diagram is a representation of various components, how they are arranged, and in what manner or sequence they work in correspondence to each other. It is a graphical way of representing a process.