Claus Technology

Claus Technology


The Claus process is the most significant gas desulfurizing process that recovers elemental sulfur from gaseous hydrogen sulfide found in raw natural gas and from the by-product gases containing hydrogen sulfide derived from refining crude oil, gasification, and other industrial processes. Fluor's proprietary Claus process can accommodate a wide range of applications. It can be configured to process acid gas streams relatively rich in H2S with a maximum recovery of 98% from a three stage design. For acid gases that are diluted in H2S and/or containing certain levels of contaminates such as BTX, ammonia, and cyanide. Fluor's proprietary process configurations can be customized to provide the highest safety, reliability, and cost-effective scheme for any applications in the industry. For applications where recovery loss via formation of COS and CS2 is a concern, our proprietary design utilizes TiO2 catalyst in the Claus catalytic stages to achieve the highest desirable sulfur recovery efficiency.

Client Benefits

Fluor implements unique solutions to offer clients:

  • Up to 98% sulfur recovery,
  • High reliability and operability,
  • Bright yellow elemental sulfur product,
  • Low maintenance and
  • Safe and compact plant layout.