Within the Gulf Coast System, the Port Arthur Blue Hydrogen plant in Texas approached 8 million tons of captured CO2 as of 2021.

The project, completed in 2013, entailed the retrofit of two existing steam methane reformers with carbon capture units to reduce +90% of high-pressure CO2 in process streams, equating to approximately half of the direct emissions associated with hydrogen production. The reformers are within the Valero Refinery in Port Arthur, Texas.

CO2 is captured using vacuum swing adsorption separation units, purified by a tri-ethylene glycol dryer, compressed to supercritical pressures, and transported by Air Products via a ~21 km (~13 mile) pipeline to Denbury Onshore.