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23-Chem-A5 Chemical Plant Design and Economics: May 2018

Nivaar worked solution (AI-drafted; not reviewed by a licensed engineer)

  1. Question 1 Flowsheet Synthesis for the Solvay (Ammonia-Soda) Production of Na 2 CO 3
  2. Question 2 Choosing a Separation Sequence on Lowest Depreciation
  3. Question 3 Process Design & Development Items; Batch-Reactor Procedures
  4. Question 4 Distillation Column Design Steps; Tray vs. Packed Selection
  5. Question 5 Protective Linings for Chemical Plant Equipment
  6. Question 6 Pollution-Prevention Considerations in Unit-Operation Design

Start with Question 1 →

Closed-book exam, 3 hours; one aid sheet (both sides) permitted; approved calculator. Six questions of equal value (20 marks each); five constitute a complete paper — full solutions to all six are given here. Question 1 is process synthesis (draw a flowsheet), Question 2 is quantitative (separation-train economics), and Questions 3–6 are design-practice list/essay questions.

Reference texts: M.S. Peters, K.D. Timmerhaus & R.E. West, Plant Design and Economics for Chemical Engineers (5th ed., McGraw-Hill) — the exam's named primary text (process synthesis & flowsheet development Ch. 2–4, general design considerations incl. materials of construction Ch. 3–4, cost & depreciation Ch. 6–9); R. Turton et al., Analysis, Synthesis, and Design of Chemical Processes (4th ed., Prentice Hall) — separation sequencing heuristics and pollution-prevention hierarchy; R.K. Sinnott & G. Towler, Chemical Engineering Design (Coulson & Richardson Vol. 6) — distillation column design and column-internals selection; D.A. Crowl & J.F. Louvar, Chemical Process Safety (4th ed.) — batch-reactor procedures and inherently safer design. Canadian practice framed by CCOHS/WHMIS 2015 and provincial OH&S process-safety expectations.