A Hydrogen Peroxide Unit is a facility or processing unit in chemical manufacturing that produces hydrogen peroxide (H₂O₂), a powerful oxidizing agent with a variety of industrial and commercial applications. Hydrogen peroxide units are often integrated with other systems or plants for efficiency, environmental considerations, or to create complex chemical products. Some common combinations. Typically, in large-scale industrial applications, hydrogen peroxide is produced using the anthraquinone process, where hydrogen gas is reacted with anthraquinone compounds in the presence of a catalyst.