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C₄ Upgrading

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Conference
Marseille, France - CET
3 days
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Post Combustion Capture Conference PCCC-8
The 8th Post‑Combustion Capture Conference (PCCC‑8) is organized by IEAGHG and will take place September 16–18, 2025 at the World Trade Center in Marseille, France.
This three-day event brings together 200–250 industry, academic, and government experts to discuss the latest advances in post‑combustion CO₂ capture technologies, including pilot plants, demonstrations, and operational CCS projects.
Carbon Capture, Utilization & Storage
APH
Aromatics Extraction
Extractive Distillation
Liquid Liquid Extraction (LLE)
Blue Hydrogen
DeNOx
Energy Efficiency
LOHC
Toluene (TL) Hydrogenation
MethylCycloHexane (MCH) DeHydrogenation
SPERA Hydrogen
Benzene Hydrogenation
Benzene Production
Bio Aromatics
Bio Olefins
Bio Ethylene
Bio Butadiene
C₄ Fractionation
Butene-1 recovery
Isobutene Recovery
C₄ Isomerization / Alkylation / Olefins Hydrogenation
Feed Purification
Sulfuric Acid Alkylation
C₄ Isomerization
Fluoridric Acid Alkylation
Solvent hydrogenation
C₄ Upgrading
C₅ Skeletal Isomerization
C₅-C₆ Isomerization
Once-through
Octane Enhancement
Advanced Recycle
Catalytic Cracking
VGO FCC
HS FCC
Resid FCC
High Propylene FCC
Catalytic Reforming
CCR Reforming
Cyclic Reforming
Semi-reg Reforming
Catalytic Reforming
CDU (Crude Distillation Unit)
Cellulosic Ethanol
CO₂ Capture
CO₂ Gas Drying
Process Technologies
Drying Series Adsorbent
Sulfur Removal for Oil, Gas & Petrochemicals Adsorbent
Europe
+50
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Technical Article - Using Technology to Increase Middle Distillate Production

Technical Article - Tackling the Gasoline / Middle Distillate Imbalance

Technical Article - Technical Article - Gasoline and Diesel Imbalances in The Atlantic Basin Part 2

Technical Article - Gasoline and Diesel Imbalances in The Atlantic Basin Part 1: Market Outlook

Commercial Bulletin - Polynaphtha™ & Selectopol™

Commercial Bulletin - Polynaphtha™ & Selectopol™

Conference
San Francisco - UTC-7
3 days
Speakers
David Schwalje
Emerging Market Development Axens Americas
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ABLC 2021
Advanced Bioeconomy Leadership Conference (ABLC) is a connected series of 6 conferences and 16 events in total on the most important issues in the Bioeconomy right now. The topic of the conferences ranges from advanced biofuels, renewable chemicals, advanced agriculture, advanced nutrition, sustainable aviation fuels, and advanced biogas.
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Conference
New Orleans - GMT-5
2 days
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American Fuel & Petrochemical Manufacturers (AFPM) Summit
The Summit: Excellence in Plant Performance blends AFPM’s traditional refining and petrochemical manufacturing technical curriculum with new creative opportunities that drive excellence in plant performance. Topics and themes throughout the conference will highlight emerging process technologies, process safety, improved reliability and operations, mechanical integrity, training, leadership, and culture.
Petrochemicals
Renewable Fuels & Bio-Based Chemicals
Aromatics Extraction
Extractive Distillation
Liquid Liquid Extraction (LLE)
Benzene Hydrogenation
Benzene Production
Bio Aromatics
Bio Olefins
Bio Ethylene
Bio Butadiene
C₄ Fractionation
Butene-1 recovery
Isobutene Recovery
C₄ Isomerization / Alkylation / Olefins Hydrogenation
C₄ Isomerization
Fluoridric Acid Alkylation
Sulfuric Acid Alkylation
Feed Purification
Solvent hydrogenation
C₄ Upgrading
C₅ Skeletal Isomerization
C₅-C₆ Isomerization
Once-through
Octane Enhancement
Advanced Recycle
Catalytic Cracking
VGO FCC
Resid FCC
High Propylene FCC
Catalytic Reforming
CCR Reforming
Cyclic Reforming
Semi-reg Reforming
Catalytic Reforming
CDU (Crude Distillation Unit)
Cellulosic Ethanol
CO₂ Capture
CO₂ Gas Drying
Cyclohexane Production
Diesel Hydrotreating
EDC Cracking
Etherification
FCC Naphtha Hydrotreating
FCC Naphtha Sweetening
Gas Dehydration & Purification
Solvent Processes
Dew Pointing
Adsorbents
Gas Sweetening
Solvent Based Processes
Cryogenic Processes
Catalytic Processes
Adsorbents
High-conversion Hydrocracking
Kerosene Sweetening / Hydrotreating
Sweetening
Hydrotreating
LNG
LPG Sweetening & Olefins Recovery
LPG Sweetening
Olefins Recovery
Lube Plant
Hydrorefining
Lubes Hydrofinishing
Hydroisomerization & Hydrofinishing
White oils Hydrotreating
Wax Hydrotreating
MEG Recovery
Naphtha Treatment
NGL & Condensates Sweetening
NGL Recovery & Treatment
Olefins Purification
Phenol Production
Oligomerization
Olefins Purification
Ethylene Purification
Comonomer Purification
Propylene Purification
Olefins Removal
Olefins Selective Hydrogenation
C₂ Selective Hydrogenation
C₃, C₄, C₅ Selective Hydrogenation
C₅+ Pygas Hydrogenation
Oligomerization
Heterogeneous Oligomerization
Homogeneous Oligomerization
Oligomerization
Ethylene
Butene
Paraxylene Purification & Production
Phenol Production
Renewable Diesel and Jet
Americas
+93
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Selectopol™

The Selectopol™ process is a variant of the Polynaphtha™ process using the same catalyst but at lower severity:

  • To convert selectively the isobutene portion of an olefinic C4 fraction to high octane, low RVP gasoline blending stock,
  • or to enrich Trimethyl Pentene stream for petrochemical applications.

Selectopol™ technology is an alternative scheme to avoid or reduce MTBE production in C4 complex.

Enriched n-butenes raffinate of Selectopol™ is ideally sent to Alkylation, Methyl Ethyl Ketone (MEK), Metathesis or Dimersol-X™ process unit, without any pretreatment.

Low cost means of retrofitting existing MTBE units or debottlenecking existing alkylation units
Almost complete isobutene conversion while preserving N-butenes
20 Selectopol™ and Polynaphtha™ units have been licensed by Axens
Polynaphtha
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