What gas is targeted for removal in amine units associated with the FGRU?

In amine units associated with the Fuel Gas Recovery Unit (FGRU), the primary target for removal is hydrogen sulfide. This is because hydrogen sulfide is a toxic and corrosive gas that can pose significant safety and environmental hazards if not adequately managed. The amine process is specifically designed to absorb hydrogen sulfide from gas streams, allowing for safer processing and compliance with environmental regulations.

The functionality of amine units hinges on the ability of the amine solvent to react selectively with hydrogen sulfide, facilitating its separation from other gases. In refining processes, ensuring the removal of hydrogen sulfide is crucial not only for safety but also for protecting downstream equipment from corrosion and maintaining the quality of the final products.

While carbon dioxide is often present and can be removed in similar processes, the distinctive focus on hydrogen sulfide in the context of the FGRU highlights its immediate handling priority. Other gases, such as methane and nitrogen dioxide, do not share the same level of concern as hydrogen sulfide in refinery operations when it comes to the specific objectives of amine treatment plants.