Reforming feed selection Which stream is generally used as the feed for catalytic reforming to produce high-octane reformate and hydrogen?

Difficulty: Easy

Correct Answer: Naphtha or straight-run gasoline

Explanation:

Introduction / Context:Catalytic reforming boosts octane for gasoline blending and supplies hydrogen for hydrotreating. The choice of feed determines product quality, severity, and catalyst life.

Given Data / Assumptions:

  • Standard platforming/CCR reformer conditions.
  • Focus on mainstream refinery routing.
  • Goal is to name the normal feedstock.

Concept / Approach:Reforming targets naphtha-range molecules (C6–C8 mostly). Typical feed is straight-run or hydrotreated naphtha, not heavier distillates like AGO/VGO or residues, which are routed to FCC/hydrocracking/residue conversion instead.

Step-by-Step Solution:

Recall reformer chemistry (naphthenes → aromatics, paraffin isomerisation) best suits naphtha.Exclude heavy feeds (AGO/VGO/residue) that require cracking/hydrotreating pathways instead.Choose naphtha or straight-run gasoline.

Verification / Alternative check:Typical refinery flow diagrams show naphtha splitter → hydrotreating → reformer → reformate + H2.

Why Other Options Are Wrong:

  • AGO/VGO: Usually to FCC/hydrocracker.
  • Reduced crude: To vacuum distillation/thermal or residue conversion units.

Common Pitfalls:Assuming “gas oil” is acceptable feed; reformers do not target those boiling ranges.

Final Answer:Naphtha or straight-run gasoline

More Questions from Petroleum Refinery Engineering

Discussion & Comments

No comments yet. Be the first to comment!
Join Discussion