Reference no: EM131297129
Chemical Process Project Descriptions - Plant for Production of Ammonia: Haber - Bosch process -
PROJECT:
Answer the questions on the following pages. Prior to Thanksgiving, a sheet will be provided that you can print out and simply write down your final answer in the provided locations.
To show work, provide hand-written sample calculations for each part. In other words, for streams with seven components (as an example), write out and solve a species/material balance for at least one component.
- If you use MATLAB to help you solve, provide the code you used for each question, with clear labels for all equations defined. Ask instructors for more details.
- If you use Excel to help you solve, provide print-outs of all your data calculations, but clearly box and label sections for different calculations. Ask instructors for details.
- If you use EZ-Solve to help you solve, provide print-outs of all your data calculations, but clearly label each page. Ask instructors for details.
- If you complete all calculations by hand, please write out all species balances for all your calculations and provide all necessary solutions to these balances that are relevant to answer the questions on the following pages.
Material Balance Questions: Let G = 100 mol/s unless stated otherwise
1. FURNACE FOR PRIMARY REFORMER: Additional natural gas is combusted with 25% excess air (both initially at 25ºC and 1 atm) to provide heat for the reformer. If half of this heat is perfectly transferred into the reformer: (a.) For G = 100 mol/s, what flow rates of natural gas and air are needed? Assume the temperature of the combustion exhaust gases is 900ºC (b.) If no heat was transferred to the reformer, what is the adiabatic flame temperature of the combustion reaction?
2. SECONDARY REFORMER: For the secondary reformer, air is pre-heated from 25ºC to 600ºC isobarically at 1 atm. (a.) How much heat is required? (b.) If the exhaust gases at 900ºC from (#12) are used to heat this air (with perfect efficiency), what is the final temperature of exhaust gases? (c.) How much heat is necessary for the secondary reformer to have an exit temperature of 1000ºC?
3. SHIFT REACTOR: To avoid destroying the shift reactor catalyst, stream S must be cooled to 400ºC. (a.) How much heat must be removed for this cooling? (b.) How much heat must be removed for the shift reactor to have an exit temperature of 300ºC? (c.) If 500 mol/s of liquid water at 25ºC is used to remove this heat in a heat exchanger, what is the final temperature/phase of the water that leaves?
Attachment:- Chemical Project Assignment.rar
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