August 2007

Special Report: Fluid Flow and Rotating Equipment

Coriolis flowmeters improve hydrogen production

Accurate steam-to-carbon ratio control provided efficient operation

Hoglen, W., Air Products and Chemicals, Inc.; Valentine, J., Emerson Process Management

Refinery-based hydrogen production from natural gas (NG) is typically a challenge to make the most efficient use of resources to produce product at levels that help facilitate safe, steady and profitable refinery operation. The recent application of Coriolis flowmeters in an innovative and patented Air Products and Chemicals process has greatly improved the ability to maintain efficient operation despite a common and longstanding hardship (Fig. 1). NG supplies vary in their composition. For some uses, this variation is of little or no consequence. However, until now it has been a cause of higher maintenance costs and reduced efficiency in hydrogen production. The new equipment and proces

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