(218e) Rapid Online Analysis of Acetylene for Improved Optimization of Hydrogenation Reactors

Authors: 
Tate, J. D., The Dow Chemical Company
Le, L. D., The Dow Chemical Company
Seasholtz, M. B., Dow Chemical Company
Gupta, M., Los Gatos Research
Baer, D., Los Gatos Research
Knittel, T., Analytical Specialties Inc.
Cowie, A., Analytical Specialties Inc.
Zhu, J., The Dow Chemical Company


Rapid analysis of acetylene (C2H2) in crack gas has been a significant technology gap in the olefin's industry for many years. Currently, the accepted best practice in the industry is on-line Gas Chromatography (GC); however, it suffers from a slow response time. A much faster, near real-time, analysis would allow tighter acetylene hydrogenation process control (patent pending).

Since 1999, The Dow Chemical Company has been aggressively pursuing solutions to this unmet need. To catalyze a commercial solution, Dow formed a strategic partnership with several external partners (Analytical Specialties, Dept. of Energy and Los Gatos Research). These collaborations have led to the development and commercialization of a near real-time analyzer capable of measuring C2H2 in cracked gas at the part-per-billion level. This technology is based on Off-Axis Integrated Cavity Output Spectroscopy (ICOS). The presentation will outline the ICOS technology, application feasibility study, and analyzer performance and field validation undertaken by Dow.

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2006 Spring Meeting & 2nd Global Congress on Process Safety
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