Pyrolysis Gasoline (Dripolene / DPG) | Royal Global Energy
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Pyrolysis
GasolineDripolene / DPG — raw & hydrotreated grades

Amber, aromatics‑rich pyrolysis gasoline recovered from ethylene plants across Turkmenistan and the Middle East — supplied raw or stabilized through DPG‑I and DPG‑II hydrogenation to a consistent trading specification on every cargo.

It's a high‑octane gasoline blending stock and the primary feedstock for benzene, toluene and xylene (BTX) aromatics extraction.

Aromatics content, % — axis 55–75
RGE BTX‑grade spec70.0%
Raw dripolene, typ.60.0%

Hydrotreating lifts the usable aromatics fraction while stripping out the diolefins that would otherwise foul downstream units.

Dripolene Pyrolysis Gasoline DPG‑I Treated DPG‑II / BTX Grade Gasoline Blending Stock Turkmenistan Middle East Aromatics Extraction Dripolene Pyrolysis Gasoline DPG‑I Treated DPG‑II / BTX Grade Gasoline Blending Stock Turkmenistan Middle East Aromatics Extraction
Grades

Raw, DPG‑I
or DPG‑II

Royal Global Energy supplies pyrolysis gasoline in three commercial grades — raw dripolene, DPG‑I treated and DPG‑II / BTX grade — each graded to its own diolefin, sulfur and gum limits, but drawn from the same aromatics‑rich cracker byproduct.

DPG‑I hydrogenation saturates diolefins and styrene so the stream is stable enough to blend into motor gasoline. DPG‑II goes further, saturating olefins and stripping sulfur so the stream is clean enough to feed an aromatics extraction unit.

Raw

Raw dripolene

Unstabilized cracker byproduct, high in diolefins and gum, for immediate hydrotreating or fuel oil blending.

DPG‑I

DPG‑I treated

Diolefins and styrene saturated, stable gasoline blending stock ready for the motor fuel pool.

DPG‑II

DPG‑II / BTX grade

Olefins saturated and desulfurized, feedstock‑grade for benzene, toluene and xylene extraction.

Aromatics content by grade

Target fraction Spec limit
Raw Dripolene
60% Typ.
DPG‑I Treated
65% Typ.
DPG‑II / BTX Grade
70% Min
Diolefin content, raw
20% Max
Sulfur, DPG‑II grade
0.5 ppm Max
0% 25% 50% 75% 100%

Aromatics and diolefin content by mass, against a 0–100% cargo axis. Grades tested to ASTM D1319 (aromatics) and UOP 326 (diolefin / maleic anhydride value).

Reference

Trading specification

Property Limit
Density @ 15°C860–900 kg/m³
Aromatics content60–70 wt% Typ.
Research Octane Number (RON)95–102
Diolefin content, as raw20% Max
Sulfur content300 ppm Max, by grade
Distillation range (IBP–FBP)35–200°C
Cargo‑level trading specification. Grade‑specific limits for raw, DPG‑I and DPG‑II pyrolysis gasoline follow below.
Application

Where it's used

Supplied as raw dripolene, DPG‑I treated and DPG‑II / BTX grade, moving through three core demand channels alongside fuel oil blending.

Gasoline blending stock

DPG‑I treated pyrolysis gasoline lifts octane in the motor gasoline pool once diolefins and styrene are saturated.

Aromatics (BTX) extraction

DPG‑II / BTX grade feeds benzene, toluene and xylene recovery units once olefins and sulfur are removed.

Petrochemical & solvent use

Raw dripolene and off‑spec cuts feed further processing into styrene, resin feedstocks and industrial solvents.

Raw Dripolene DPG‑I DPG‑II BTX Grade
Facility & product

Our
operations

RGE pyrolysis gasoline hydrotreating unit
Pyrolysis gasoline product loading at export terminal
Technical data

Full specifications

PropertyLimitTest method
Physical formLiquidVisual
AppearanceAmber to dark yellowVisual
Density @ 15°C860–900 kg/m³ASTM D‑4052
Research Octane Number (RON)95–102ASTM D‑2699
Aromatics content55–65 wt%ASTM D‑1319
Diolefin content (Maleic Anhydride Value)20 MaxUOP 326
Bromine number50 MaxASTM D‑1159
Sulfur content300 ppm MaxASTM D‑5453
Existent gum100 mg/100mL MaxASTM D‑381
Distillation, IBP–FBP35–200°CASTM D‑86
Water content0.05% MaxASTM D‑95
PropertyLimitTest method
Physical formLiquidVisual
AppearancePale yellow, clearVisual
Density @ 15°C865–905 kg/m³ASTM D‑4052
Research Octane Number (RON)97–102ASTM D‑2699
Aromatics content65–70 wt% MinASTM D‑1319
Diolefin content (Maleic Anhydride Value)2 MaxUOP 326
Bromine number15 MaxASTM D‑1159
Sulfur content0.5 ppm MaxASTM D‑5453
Existent gum10 mg/100mL MaxASTM D‑381
Distillation, IBP–FBP35–190°CASTM D‑86
Water content0.02% MaxASTM D‑95
Aromatics ranges for this grade are shown above, under Grades.
Storage

Storage & export loading

Pyrolysis gasoline moves at atmospheric pressure — from nitrogen‑blanketed, floating‑roof shore tanks, segregated by treatment grade, to product tankers and rail cars loading for export or inland delivery.

Raw dripolene is inhibited against gum formation and kept under nitrogen blanket; DPG‑treated grades are more stable but still handled on dedicated, segregated lines to avoid cross‑contamination.

5,000–30,000 m³
Tank farm capacity, per grade
860–905 kg/m³
Density range, 15°C
95–102 RON
Octane range, by grade
300–800 m³/hr
Typ. loading rate
DPG / DRIPOLENE N₂ BLANKETED · FLOATING ROOF loading line level & temp gauge
Storage & vessel propertySpecification
Containment typeAtmospheric steel tank, floating roof, nitrogen blanketed
Design temperatureAmbient, typ. 0°C to +40°C
MaterialCarbon steel, internally coated where required
Loading methodMarine loading arm / rail gantry
MeteringMass flow / volumetric, custody transfer
Safety systemsNitrogen blanketing, foam suppression, static bonding
Product segregationDedicated tanks per treatment grade
AdditivesGum inhibitor / antioxidant, raw grade only
Cargo‑specific loading and storage parameters vary by terminal and vessel; full loadmaster data shared pre‑fixture.
DPG shipping

Transport &
classification

Shipping data for pyrolysis gasoline cargoes — raw dripolene and DPG‑treated grades — moved under IMDG, ADR/RID and IMO MARPOL Annex I regulations.

Pyrolysis gasoline / dripolene is classified for maritime and overland transport as UN 1268, Petroleum Distillates, N.O.S.

Class 3, Flammable Liquid, packing group II given its higher volatility versus gasoil, carried in dedicated product tankers and shore tanks under MARPOL Annex I.

Regulated for tank transport under ADR/RID; raw dripolene is shipped inhibited against gum formation, in dedicated tank vehicles and wagons.

Stored under nitrogen blanket in sealed, clearly labelled tanks segregated by treatment grade, away from ignition sources and incompatible materials, per site HSE procedures.

Documentation

Download specifications

Full data sheets for each pyrolysis gasoline grade, ready to share with your engineering team.

Raw Pyrolysis Gasoline
Specification sheet · PDF
 DPG‑I Treated Gasoline
Specification sheet · PDF
 DPG‑II / BTX Grade
Specification sheet · PDF

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