Olefins purification is a highly complex challenge, involving adsorption and selective hydrogenation to treat streams that may come not only from steam crackers, but also from refineries or on purpose olefins units. Contaminants range from sulfur containing species over oxygenates to metals like arsenic and mercury.
To tackle this challenge, a holistic approach, aiming at the overall optimization of the entire purification chain, is more efficient and cost-effective than optimizing each individual purification unit inside its battery limits. Furthermore, it enables operators to avoid the tricky and time-consuming management of multiple interfaces.