show a clear relation between the process streams and the mass flow data in these streams.

In the assignment of week 1 , you saw that there are connections between the ammonia, fertilizer, urea and melamine production plants. Ammonia is not only used in CAN fertilizer production, but also used to produce urea. Off-gasses from the urea plant react are neutralized with nitric acid from the nitric acid plant resulting in ammonium nitrate that is used in the CAN fertilizer production. Urea can be used as a fertilizer as well, but it can also react to a higher value product, melamine. Melamine is a white crystalline powder. When melamine reacts with formaldehyde, a very strong transparent resin is formed that is applied in the automotive industry, laminates, kitchenware, and elsewhere. Unfortunately, during the reaction of urea to melamine, different side reactions occur as well leading to product impurity. Although more side reactions occur resulting in a variety of impurities, we will only take 1 side reaction into account in this assignment. Desired reaction: heat, pressure Urea Melamine Undesired reaction: Melamine Ammeline Create a process flowsheet for the melamine production process starting form urea, described above, and: 1. Calculate all the mass flows when knowing that the urea input equals 30kmol/hr, the water input equals 5kmol/hr, ammeline fraction in the end product is 1.5mol% and the fractional conversion of urea is 96%. Use the concept of 'extent of reaction' in your calculations. 2. The flow rate in the reactor is very high to be able to quench* the gaseous process stream containing melamine and water as soon as possible. Can you explain why a fast quench is important knowing that the reaction from urea to melamine is almost instantaneous? *the internet will help you to get an understanding of quenching and you can deduce the application for chemical reactions