Claus Process

We provide leading catalysts, technical services and licensed process technologies that enable more and cleaner energy solutions today and for the future.

Meet Sulphur Emission Mandates with Claus Process

Well-operated Claus tail-gas units are increasingly important as operators strive to meet their sulphur emissions mandates. Tighter standards mean gas plants need to achieve deeper levels of sulphur removal in order to meet these environmental mandates.

Sulphur recovery efficiencies of over 99.9% are being specified on some projects. In order to be positioned to achieve this, the Claus section is generally followed by a tail gas treating section.

Shell Catalysts & Technologies offers a portfolio of sulphur recovery technologies catering for the full range of sulphur removal capacities that can be integrated parts of complex gas cleaning line-ups to provide safe, reliable and easy-to-operate systems, and that are economically attractive and environmentally responsible.

Customers are looking for solutions that:

Can meet the required emission standards. Sulphur recovery efficiencies of over 99.9% are being specified on some projects.
Lessen capital and operating costs. Simplified process line-ups can help to keep costs down.
Reduce process line-up complexity.
Offer high flexibility. The ability to operate over a wide range of sulphur intakes can be advantageous.
Increase reliability.

Gas plants and refineries worldwide have reported lower operating costs, extended cycle lengths and reduced pressure drop as a result of installing state-of-the-art technologies and catalysts in their Claus tail-gas treating units.

Integrate the Clause Process to keep operating costs low while enabling Enhanced Oil Recovery to reduce emissions.

The pure CO₂ and SO₂ captured avoid landfill and legacy environmental issues and can be sold or reused as marketable co-products. Consistent with Shell Catalysts & Technologies鈥� approach across our holistic services, we emphasise sustainability, reusability, and profitable processes at every point. This highly adaptable technology can be added to an existing plant or incorporated in a new installation across a wide range of industries.

Claus Process Frequently Asked Questions

The Claus process is highly efficient in recovering elemental sulphur from hydrogen sulphide (H₂S) gas streams and is employed in the sulphur recovery units of refineries, natural gas processing plants and other facilities where H₂S gas is present. The Claus process is crucial for reducing sulphur emissions, maintaining environmental compliance and producing valuable elemental sulphur. Here we address commonly asked questions about this catalytic sulphur recovery process. We explore the catalysts involved and how an efficient sulphur recovery is achieved.