Develop an optimal heat exchanger network for it.
(Reaction pathway A with production capacity 320,000 ton/yr)
Your tasks:
- Simulate the process using the process simulator (i,e. Aspen Plus, Aspen HYSYS, etc.)
- Solve and present the material and energy balances for the process
- Write about process description and present the simulated flowsheet with hot and cold streams
- Using the material and energy balance solution, extract information necessary to define the HEN synthesis problem. Pay attention to possible phase changes in the streams.
- Compute and discuss the pinch temperatures and MER targets for ΔTmin =10 °C, 20 °C, 30°C.
- Discuss the percentage of savings
- Present and discuss the GCC
- Carry out a HEN design to meet the thermal targets.
- Refine your solution to eliminate heat loops and minimize the annualized cost of the HEN.
For the annualized cost, include an estimate for:
(a) The cost of all heat exchanges (both interior and utility exchangers).
Estimate bare module cost, assuming operation of 330 days/year, and use a return on investment of 20%. Note that furnace costs are higher than heat exchanger costs.
(b) The annual cost of utilities. Identify costs for refrigerant if needed), cooling water, steam (at one pressure), and natural gas used as fuel. - Repeat the above steps using simulator energy optimizer ( i,e, Aspen energy analyzer)
Submit the simulation file and a technical report which:
• Addresses the above-mentioned tasks
• Describes your HEN and the steps involved in developing it
• Provides a process flow diagram showing all of the heat exchanges
• Provides a list of the heat exchangers with their duties
• Summarizes the utility requirements (for fuel, steam, cooling water, and refrigeration)
Sample Solution
