Heterogeneous Oligomerization

Axens can offer a large range of simple, robust and flexible processes to address the market demand:

Polynaphtha™, Selectopol™ and PolyFuel® are Axens technologies which oligomerize olefins contained in the light cracked cut into higher value olefinic cuts which can be used as high octane gasoline or high cold properties kerosene or diesel fraction.
FlexEne™ is an innovative combination of two well-proven technologies: Fluidized catalytic cracking (FCC) and Oligomerization to expand the capabilities of the FCC process which is the main refinery conversion unit traditionally oriented to maximize gasoline and at times propylene production.

05 Oct

Conference

New Orleans - GMT-5

2 days

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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FlexEne™

Axens has developed the new FlexEne™ technology to expand the capabilities of the FCC process which is the main refinery conversion unit traditionally oriented to maximize gasoline and at times propylene production.

FlexEne™ is an innovative combination of two well-proven technologies: Fluidized Catalytic Cracking (FCC) and Oligomerization (Polynaphtha™). Combined in an innovative way, they can significantly improve product flexibility to control the balance of propylene, gasoline and diesel production with a low capital investment. This FLEXibility is achieved by selective oligomerization of light FCC alkENEs (olefins) for recycle cracking in the FCC.

By adjusting the catalyst formulation and operating conditions, the FCC process is able to operate in different modes: Maxi Distillate, Maxi Gasoline and High Propylene. This provides the product flexibility required by the market.

7 references for FlexEne™ recorded since its introduction

Proven Flexibility & Simplicity

High Return on Investment

PolyFuel®

PolyFuel® technological service is an innovative technology aimed at maximizing middle distillates production by converting light olefins from LPG and gasoline into distillates at minimum cost. PolyFuel® can accept the full range C5-C9 olefinic cut produced downstream of the FCC.

PolyFuel® technology’s objective is to tackle unbalanced gasoline/middle distillates slates while reaching tighter products requirements.

In the PolyFuel® process, light olefins are oligomerized catalytically in two fixed bed reactors in series. Conversion and selectivity are controlled by reactor temperature adjustment while the heat of reaction is simply removed by feed-effluent heat exchange. The reactor section effluent is fractionated producing gasoline depleted in olefins and middle distillates fractions. The gasoline fraction is recycled to the reaction section to enhance middle distillates production.

PolyFuel® technology is the result of more than 60 years of commercial experience in the fields of olefins conversion into fuels

Moderate investment and utilities consumption

Environmentally friendly solid catalyst regenerable several times

Commercial Bulletin

Related Offer

Modular Unit

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 provides a low-cost means of retrofitting existing MTBE units or debottlenecking existing alkylation units by converting all isobutene and a small percentage of the n-butenes, with no need for additional isobutane. Selectopol™ is an alternative scheme for alkylation feed preparation without alcohol handling. Selectopol™ technology is also foreseen 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.

More than 20 Selectopol™ and Polynaphtha™ units have been licensed by Axens

Almost complete isobutene conversion while preserving N-butenes and Very High RON gasoline

Environmentally friendly catalysts

Commercial Bulletin

Related Offer

Modular Unit

Polynaphtha™

Polynaphtha™ is one of the indirect alkylation processes upgrading low-value C₃/C₄ cuts from FCC / SC into gasoline and middle distillates by oligomerization of the light olefins contained in the C₃/C₄ cuts.

In the Polynaphtha™ process, propylene and/or mixed butenes are oligomerized catalytically in a series of fixed bed reactors. Conversion and selectivity are controlled by reactor temperature adjustment while the heat of reaction is removed by feed effluent heat exchange and intermediate reactor cooling. The reactor section effluent is fractionated producing LPG raffinate, gasoline and middle distillate fractions such as kerosene or diesel.

The Polynaphtha™ technology is well suited for revamping existing phosphoric acid polymerization units.

Almost complete olefins conversion & High RON gasoline fraction

Environmentally friendly catalyst

Simple and low cost fixed bed process

Commercial Bulletin

Related Offer

Modular Unit

Catalysts

Oligomerization Catalysts

Oligomerization technologies achieve high conversions of light olefinic fractions into higher value gasoline and middle distillates in association with dedicated catalysts specially developed for these applications.

Adsorbents

Sulfur Removal Adsorbents for Oil, Gas & Petrochemicals

Hydrogen sulfide (H₂S), COS, mercaptans or sulfides are common contaminants that must be removed from various gases and liquids such as natural gas, NGLs, LPGs, cracked gases, olefins or biogas.

Adsorbents

Purification Series Adsorbents

Material specially developed to achieve your feedstock’s specification requirements.

Adsorbents

Drying Series Adsorbents

Water removal applications are widely encountered in the industry sector. Activated alumina and molecular sieves stand at the forefront of the several different materials available on the market.

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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