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Switching valves used in molecular sieve applications (cracked gas drying) in the ethylene production industry face several operating challenges that may link to increased plant downtime, product loss and environmental pollution. Key end users and licensors have long been seeking alternative solutions to the standard valve product design for this application. Over the years, Emerson Vanessa has acquired the know-how necessary to manufacture an exceptionally reliable triple offset valve that meets and exceeds the level of performance required with minimum maintenance and long life expectancy.
Triple Offset Valves for Molecular Sieve Applications in Ethylene Production
In light of an increased competition on a global scale and subsequent pressure on increasing plant efficiency, reducing capital and operational expenditures without compromising safety, reliability, and performance is paramount. This article explores the adoption of Vanessa Triple Offset Valves (TOVs, Figure 1) as a cost-effective solution in cracked gas dehydration by adsorption on molecular sieves vis-à-vis the existing standard valve technology, namely the design principle of a rising stem ball valve.
