442336 Selective Acetylene Hydrogenation with OleMax207 for Back End Units

Wednesday, April 13, 2016: 3:00 PM
Grand Ballroom EF (Hilton Americas - Houston)
Yu Liu1, Lin Luo2, Marcos Martinez3, Cristinez Martinez4, Denise B. Cooper5, Brian Heasley6 and Mingyong Sun6, (1)Olefins, Aromatics, and Alternatives R&D, The Dow Chemical Company, Freeport, TX, (2)2301 N. Brazosport Blvd, B251, The Dow Chemical Company, Freeport, TX, (3)The Dow Chemical Company, Plaquemine, LA, (4)The Dow Chemical Company, (5)Clariant, Houston, TX, (6)Clariant

Selective acetylene hydrogenation is widely used to reduce acetylene in the ethylene stream to meet the specifications of polymer grade ethylene. For a backend selective hydrogenation system, frequent catalyst regeneration is typically required due to the relatively fast catalyst fouling. The new generation backend catalyst, OleMax®207 supplied by Clariant, has reduced green oil formation and consequently led to much longer cycle time. In this presentation, we would like to share Dow’s experience of using this catalyst. In a Dow cracker, OleMax®207 has been functioning well for multiple years without regeneration.  Possible plant events which can affect acetylene removal in the backend operation will also be discussed.

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