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23-Chem-B6 Petroleum Refining and Petrochemicals: December 2014

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

  1. Question 1 Petroleum-fraction properties, TAN, flash point, and a binary distillation balance
  2. Question 2 Acid-gas removal, pour point, and percent excess air
  3. Question 3 Coking processes, API of heavy crude, and an acetylene plant
  4. Question 4 Gasoline properties, API gravity, and a blended-oil density
  5. Question 5 Alkylation selection and safety; hydrogen production and recovery
  6. Question 6 Refinery environmental risks, hydrocracker design, and a sieve-tray balance

Start with Question 1 →

National Exams, December 2014 — 04-Chem-B6. Closed-book; non-communicating calculator permitted. Five of six equally-weighted problems constitute a complete paper; all six are solved here. Parts (a)–(g) of each problem are independent. Most parts are essay-format; some require calculations.

Reference texts: Gary, Handwerk, Kaiser & Geddes, Petroleum Refining: Technology and Economics (5th ed., CRC Press) — refinery processes, product properties and treating; Fahim, Al-Sahhaf & Elkilani, Fundamentals of Petroleum Refining (Elsevier) — hydrogen production, coking, gas treating; Felder, Rousseau & Bullard, Elementary Principles of Chemical Processes (4th ed., Wiley) — material balances, combustion and recycle calculations; supporting property data from Perry’s Chemical Engineers’ Handbook (9th ed.) and the ASTM test-method standards (D323, D86, D93, D97).