Overview

The upgrading of sub-quality natural gas or synthesis gas requires the removal of carbon dioxide, hydrogen sulphide and other trace constituents. In most cases of natural gas treatment, clean gas specifications are 50 ppm or 2 vol. % carbon dioxide and less than 4 ppm hydrogen sulphide. The synthesis gas specification depends on the type of synthesis, and may vary from 0.1 to 10 ppm of total sulphur. The application of physical solvents is especially preferred with high concentrations of carbon dioxide and/or hydrogen sulphide in the feed gas.

The Genosorb^® technology is based on the use of the physical solvent Genosorb^® which consists of polyethylene glycol dimethyl ethers. Genosorb^® is a registered trademark of Clariant GmbH, Germany.

The application of this solvent for hydrogen sulphide removal is the result of comprehensive laboratory tests and pilot plant operation performed by Uhde in collaboration with Clariant.

Uhde has extensive experience in acid gas treatment processes and provides tailor-made and optimised concepts based on the availability of different proprietary or licenced technologies.