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Olefins Purification

Olefins are usually produced in steam crackers but can also be produced in refineries for instance, through cracking processes (FCC, coker…), or on purpose olefins units.
Olefins Purification

Axens Offer

In the Oil&Gas industry, a wider variety of feedstock has been introduced over the last decade. This diversity introduces a new challenge, as the operator has to cope with a large panel of impurities and constraints that may affect their day-to-day operation.

Additionnaly, modern polymerization technologies need ever higher purity monomers to protect metallocene catalysts. and the increasingly more stringent product specifications and environmental restrictions push the petrochemical industry to use highly performant products such as adsorbents and catalysts for olefins purification.

Three different and complementary options are available to purify olefinic streams:

  • Regenerable adsorbents, designed for selective removal of polar molecules such as water, mercaptans, COS or oxygenates.
  • Sacrificial material based on chemisorption, suitable for removal of contaminants such as Chlorine, Arsine, Phosphine, Mercury, Sulfur or metals, to very low concentrations (ppb level).
  • Hydrogenation catalysts to remove diolefins and remaining hydrocarbon impurities, while maximizing the olefins production through improved selectivity technologies.

Axens, as technology, adsorbents and catalyst provider, is able to propose an integrated solution, adapted for each case, combining the different steps of purification and optimizing the interactions between them. As a result, ultra-low contaminants content product can be achieved, while complying with the highest standards of energy efficiency, sustainability and operation safety.

Select an application

The catalysts used in the ethylene polymerization process to produce polyethylene are very sensitive to contaminants in the feed - including H2O, H2S, RSH, light RSH, NH3, CO2, COS, CS2, AsH3 and PH3. The presence of trace contaminants in the ethylene can cause issues such as deactivation of these high activity catalysts resulting in off-spec product and/or low value product. Hence the selection of the optimum adsorbent combination is determining to ensure continuous reliable high value polyethylene production.

Catalysts & Grading Materials

Catalysts

Selective Hydrogenation Catalysts

High-performance selective hydrogenation catalysts dedicated to the petrochemical and refining industries, to purify highly valuable olefinic and aromatic streams produced by steam crackers and FCC units.

Adsorbents

Adsorbents

Arsine Removal Adsorbents

The poisonous effects of arsine and other metal hydrides on hydrogenation and polymerization catalysts is well documented. By far the most common, arsine can seriously deactivate the high-activity Ziegler Natta, metallocene and noble metal catalysts used for processing cracked light ends.

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.

Adsorbents

Mercury Removal Adsorbents

Mercury removal from hydrocarbons is crucial due to HSE-related issues, corrosion problems and downstream catalyst poisoning.

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.

Consulting, Supply & Support

Consulting, Studies & Audits

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

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.

Digital Services & Applications

Axens' digital platform combines real-time data and digital solutions to optimize operations, reduce environmental impact, and lower costs while maximizing profitability. By delivering actionable insights and detailed performance reports, it enhances asset operation and performance for smarter, more efficient outcomes.

Steam crackers lie at the heart of the world’s olefins production. Ultra high-purity olefin building blocks are needed to respond to the quality requirements for polymerization reactions. Polymerization reactions require feedstocks of high purity; Axens provides adsorbents to achieve the high specifications necessary for olefin monomers (e.g. ethylene) and olefin co-monomers (e.g. 1-butene or 1-hexene), especially for drying, oxygenates and sulfur removal.

Catalysts & Grading Materials

Catalysts

Selective Hydrogenation Catalysts

High-performance selective hydrogenation catalysts dedicated to the petrochemical and refining industries, to purify highly valuable olefinic and aromatic streams produced by steam crackers and FCC units.

Adsorbents

Adsorbents

Arsine Removal Adsorbents

The poisonous effects of arsine and other metal hydrides on hydrogenation and polymerization catalysts is well documented. By far the most common, arsine can seriously deactivate the high-activity Ziegler Natta, metallocene and noble metal catalysts used for processing cracked light ends.

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.

Adsorbents

Mercury Removal Adsorbents

Mercury removal from hydrocarbons is crucial due to HSE-related issues, corrosion problems and downstream catalyst poisoning.

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.

Consulting, Supply & Support

Consulting, Studies & Audits

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

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.

Digital Services & Applications

Axens' digital platform combines real-time data and digital solutions to optimize operations, reduce environmental impact, and lower costs while maximizing profitability. By delivering actionable insights and detailed performance reports, it enhances asset operation and performance for smarter, more efficient outcomes.

The catalysts used in the propylene polymerization process to produce polypropylene are very sensitive to contaminants in the feed - including H2O, MeOH, RSH, RSSR, COS, AsH3 and PH3. The presence of trace contaminants in the propylene can cause issues such as deactivation of these high activity catalysts resulting in off-spec product and/or low value product. Hence the selection of the optimum adsorbent combination is determining to ensure continuous reliable high value polypropylene production.

Catalysts & Grading Materials

Catalysts

Selective Hydrogenation Catalysts

High-performance selective hydrogenation catalysts dedicated to the petrochemical and refining industries, to purify highly valuable olefinic and aromatic streams produced by steam crackers and FCC units.

Adsorbents

Adsorbents

Arsine Removal Adsorbents

The poisonous effects of arsine and other metal hydrides on hydrogenation and polymerization catalysts is well documented. By far the most common, arsine can seriously deactivate the high-activity Ziegler Natta, metallocene and noble metal catalysts used for processing cracked light ends.

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.

Adsorbents

Mercury Removal Adsorbents

Mercury removal from hydrocarbons is crucial due to HSE-related issues, corrosion problems and downstream catalyst poisoning.

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.

Consulting, Supply & Support

Consulting, Studies & Audits

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

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.

Digital Services & Applications

Axens' digital platform combines real-time data and digital solutions to optimize operations, reduce environmental impact, and lower costs while maximizing profitability. By delivering actionable insights and detailed performance reports, it enhances asset operation and performance for smarter, more efficient outcomes.

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