Grace Agrees to acquire Evonik dental silica and Huber Defoamer product lines
Guangxi Petrochemical Company has successfully converted its existing pressure swing adsorption ( PSA) unit to Honeywell UOP Polybed PSA technology, enabling it to produce high-purity hydrogen.
The newly upgraded unit, located in Qinzhou in China’s Guangxi Province, supplies hydrogen at 99.9% purity and with increased hydrogen recovery for Guangxi Petrochemical’s hydro treating units, which use the hydrogen to extract impurities from the feedstock.
The PSA process uses proprietary UOP adsorbents to remove impurities at high pressure from hydrogen-containing process streams, allowing hydrogen to be recovered and upgraded to more than 99.9% purity to meet refining needs. In addition to recovering and purifying hydrogen from steam reformers and refinery off-gases, the Polybed PSA system can be used to produce hydrogen from other sources such as ethylene off-gas, methanol off-gas and partial-oxidation synthesis gas.