February 2014

Special Report: Clean Fuels

Optimize hydrogen plant efficiency with new MTS catalysts

To study the impact on plant efficiency of using MTS catalysts, a comparison case study was held between the HTS-based and MTS-based H2 designs currently in operation.

Hartono, T., Technip

The water-gas shift (WGS) reaction is a key process step in a hydrogen (H2) plant apart from the steam-methane reforming reaction. Conventional nonpressure swing adsorption (non-PSA)-based H2 plants use a high-temperature shift (HTS) catalytic reactor that is followed by the low-temperature shift (LTS) catalytic reactor to increase the H2 yield prior to entering the carbon dioxide (CO2) removal section and methanator. In modern H2 plants (PSA-based), LTS, CO2 removal, and the methanator process steps are no longer required. The PSA unit will adsorb most of the impurities in the synthesis gas (syngas) generated in the steam-methane reformer (SMR), as shown in FIGs. 1 and 2. These impuritie

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