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Claus

The Claus and other advanced process solutions for sulfur recovery involve using thermal and catalytic reactions. Sulfur recovery can range from 95% up to 98% depending on the feed and number of reactors used.

Promoting the Claus reaction kinetic while avoiding pore blockage in the catalyst is key to sulfur recovery maximization. Axens aluminas provide first-class performance thanks to their optimized properties. When dealing with residual COS and CS2 species, titanium-based catalysts, used alone or in combination with aluminas, is the solution of choice to reach outstanding performances.

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Conference
Barcelona, Spain - CET
3 days
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CRU Sulphur + Sulphuric Acid Conference & Exhibition 2024
CRU Sulphur + Sulphuric Acid Conference & Exhibition 2024 takes place in Barcelona, from 4 to 6 November and will cover technical updates on the production and processing of sulphur and sulphuric acid, will feature industry-leading presentations covering new innovations in process, technology, materials and equipment developments, as well as practical case studies highlighting operational experience and improvement.
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Conference
Abu Dhabi, UAE - UTC+4
4 days
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MEScon 2023
MEScon is devoted to networking, thought leadership, innovation and best practice operations across the entire sour gas and sulphur value chain. With the region’s prominence in the global sulphur industry, MEScon is the place where the sulphur and sour gas community meet to discuss and debate the key strategic themes that are driving the industry.
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Conference
The Hague - CEST
3 days
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Sulphur & Sulphuric Acid 2022 Conference & Exhibition
Now in it's 38th year, the event continues to be an essential annual forum for the global sulphur and acid community to learn, connect and do business. Knowledge sharing is at the core of the event: via the respected dual-streamed technical programme, and the connections made with industry experts and solution providers attending.
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Conference
Virtual - CEST
4 days
Speakers
Benoit Mares
Proposal Manager - Sulphur Recovery Technologies Expert
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Sulphur & Sulphuric Acid 2021 Virtual Conference
CRU Sulphur + Sulphuric Acid will run as a fully virtual event in 2021 – connecting you with an even wider audience of sulphur and acid industry professionals from around the globe. Knowledge sharing is at the core of the event: via the respected dual-streamed technical program, and the connections made with industry experts and solution providers attending.
Natural Gas
Sulfur Recovery
Sub-dewpointing Claus
Claus
Tail Gas Treatment
Equipment Supply
Modular Unit
Europe
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Claus

The Claus conventional process allows a sulfur recovery between 95 and 98% by converting H2S present in feed gas streams and recover it as elemental liquid Sulfur. The process is based on the Claus reaction that is composed of two steps, a first thermal stage and a second catalytic stage.

The thermal stage, carried out in the Reaction Furnace, consists in the partial oxidation of H2S to generate Sulfur dioxide (SO2), which will then react with the remaining hydrogen sulfide (H2S) to produce Sulfur in the catalytic stages.

Alumina is the main catalyst used in the Claus process, where the formation of sulfur occurs at the surface of heterogeneous (solid) catalysts. In addition, TiO2 based catalyst is largely used in the bottom of the first Claus reactor to better convert COS and CS2 and further reduce sulfur emissions out of stack. The most suitable catalyst configuration to match the required performances and Catalyst Life Span is selected from Axens large SRU Catalyst Portfolio, on a case by case basis.

More than 60 years of expertise and know how in Claus process with single train capacity from a few TS/d up to 2,200 TS/d
Most widely recognized Claus catalysts on the market
Large experience on Claus unit operation and troubleshooting thanks to several industrial feedbacks
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Modular Unit
Claus
Catalysts

Claus Catalysts

Promoting the Claus reaction kinetic while avoiding pore blockage in the catalyst is key to sulfur recovery maximization.

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Catalysts

Claus Active Bed Support Catalysts

Claus productivity can be boosted if the bed support material also acts as catalyst.

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Axens selected for CPCL Cauvery Basin Refinery Project in India

Chennai Petroleum Corporation Limited (CPCL), a group company of Indian Oil Corporation Limited (IOCL), India, has selected Axens to supply several advanced technologies for its state-of-the-art 9 MTPA refinery to be set at Cauvery Basin at Nagapattinam in Tamil Nadu (southern part of India).

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picto Oil Refining + 10
C₅-C₆ Isomerization Catalytic Reforming FCC Naphtha Hydrotreating VGO Hydrotreating (CFHT) / Mild Hydrocracking Claus Tail Gas Treatment Catalysts, Adsorbents, Gradings Process Technologies Technical Support & Performance Management Training

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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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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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