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Isobutene Recovery

Isobutylene can be used in several polymer products with a large variety of applications (PIB, PMMA, etc.).

Isobutylene is produced from “extraction” of C4 olefin cuts - sourced either from FCC and/or Steam crackers. Historically the extraction route was performed through sulfuric acid extraction processes, , and nowadays from “on-purpose” technologies, mainly by decomposition of MTBE or dehydration of TBA.

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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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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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Isopure™

Axens Isopure™ technology is a solution to produce high purity isobutene from C4’s olefins cuts.

This proven technology relies on a reactive distillation process in combination with hydro isomerization of 1-butene to 2-butenes. This concept eliminates the equilibrium limitations of conventional processes that convert 1-butene to 2-butene. The reactive distillation process occurs on a conventional distillation column combined with external reactors located on pump-around.-This facilitates the catalyst change-out operation and limits consequent unit downtime.

Industrially proven technology
Design conception providing maintenance advantages with external reactor configuration
Avoid the use and management of additives such as chemicals - sulfuric acid – or methanol, respectively used in conventional extraction units and MTBE cracking processes
Isopure

Technical Support & Performance Management

Axens is fully committed to be your partner and provide assistance and support during your project lifecycle, from conception to start-up & running operations.

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Consulting, Studies & Audits

Axens offers a customized approach, including tailored studies, audits and consulting services, covering technical and operational challenges.

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