Refinery Unit Map — OEG Refinery Reference Series
OEG
Refinery Reference Series

Refinery Unit Map

Sample package · CDU-100 of 22 units
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Refinery Unit
Refinery Reference Series
SERIESRefinery unit map
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Trace
All systems
Hydrocarbon
Light ends
Hydrogen
Sulfur
Relief
Utilities
Display
Layers
Default view
Fit sheet
Legible type
Animated flow
Stream № badges
Key
Hydrocarbon
Gas · H₂ · sulfur
To a planned unit
Unit built
Unit planned
7Stream №
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Crude oil from tankage Treated fuel gas Stripped water to reuse Relief header — collects every unit Sour water Sour gas to amine treating Hydrogen header Petroleum coke to shipping Purchased resid & slurry Natural gas & steam Finished products to tankage Molten sulfur & tail gas Steam · BFW · cooling water Oily water & spent caustic — every unit Fuel gas to every fired heater Cleaned flue gas to stack CDU-100 NHT-100 DHT-100 VDU-100 SWS-100 UTL-100 ISO-100 REF-100 FCC-100 HCU-100 DCU-100 ATU-100 FLR-100 SRU-100 GPU-100 ALK-100 MRX-100 BLD-100 H2-100 FGS-100 WWT-100 FGC-100 Crude Distillation Naphtha HDT Distillate HDT Vacuum Distillation Sour Water Stripper Utilities Isomerization Cat Reformer Fluid Cat Cracking Hydrocracker Delayed Coker Amine Treating Flare & Relief Sulfur Recovery Gas Plant Alkylation Merox Treating Blending & Tankage Hydrogen Plant Fuel Gas System Effluent Treatment Flue Gas Cleanup 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 40 41 42 43 22 23 44 47 45 46 39
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Back
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№
Service
Route
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Unit overview
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Arrow keys step between units. Clicking a stream, loop or vessel opens it held on that unit's P&ID. Open P&ID
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{{ discCaret }}Notes & simplifications
Simplified training reference. Block flow only — stream numbers, unit codes and capacities are teaching values consistent with the unit pages in this series, not a mass balance. Not for engineering, design, or construction use. © OEG LLC
Declared simplifications on this drawing
The relief header is drawn with four risers and labelled as collecting every unit rather than showing a tail pipe per device; the FCC’s sour gas is treated together with the gas plant’s, so it is not drawn as its own line into amine treating; utilities are shown as one unit and one header rather than distributed to each user; oily water and spent caustic are collected on one header with two risers, standing in for the sewer and caustic systems every unit drains into.