Consider the process flowsheet for the manufacturing of cellulose acetate fibers. 1. Perform the energy targeting and multiple utilities placement using HINT software. Estimate the overall cost of utilities based on current tariffs and discuss the energy performance of the process before and after heat integration. 2. Design the Heat Exchanger Network that features the maximum energy recovery using HINT software. 3. Optimise the network design to minimise the number of heat exchanger units (using HINT) and justify with appropriate cost targeting. 4. Update the process block diagram (or PFD) based on the proposed HEN 5. Propose appropriate placements of separation unit or reactor for the process and discuss. 6. Propose appropriate placements of heat pump or heat engine for the process and discuss. 7. Recommend process modifications that can be done to improve the process heat integration