267 Advances in Industrial Reaction Engineering and Catalysis

Tuesday, November 15, 2016: 8:30 AM - 11:00 AM
Franciscan A (Hilton San Francisco Union Square)
Description:
This session, consisting of both invited and submitted papers from industrial presenters, will drive visibility on the practical application of reaction engineering and catalysis expertise to industrially relevant problems. The division leadership wishes to promote and enhance industrial membership participation in section 20 sessions as well as to develop a forum in which faculty and graduate researchers can learn about the practical, industrial application of the fundamentals they develop and practice. The session will focus on the myriad of broad applications of reaction engineering and catalysis technology within industry.

Sponsor:
Catalysis and Reaction Engineering Division

Chair:
Jan J. Lerou
Email: janlerou@gmail.com

Co-chairs:
Concetta La Marca
Email: CONCETTA.LAMARCA@chemours.com

Carmo Pereira
Email: Carmo.J.Pereira@usa.dupont.com


8:30 AM
(267a) Developing a Quantitative Spatial Resolution of Deactivation Effects on FT Synthesis in a Microchannel Reactor When Operating with Ultra-Low Sulfur Levels
Soumitra Deshmukh, Henning Becker, Sara Kampfe, Kenneth Cowen, Daniele Leonarduzzi, Laura Barrio, Jay Pritchard and Heinz J. Robota

10:30 AM
(267g)                Troubleshooting for Catalysts in Ammonia Plant Reactors.                                                           Dr. Mohamed Abdel Aaty*- (Technical review about catalysts deactivation with a case study for temporary poisoning in ammonia Synthesis converter catalysts).  Catalysts Have Only a Limited Lifetime. Some Lose Their Activity after a Few Minutes, Others Last for More Than Ten Years. the Maintenance of Catalyst Activity for As Long As Possible Is of Major Economic Importance in Industry. the Causes of Deactivation Are Basically Three-Fold:Chemical, Mechanical and Thermal. the Development during the Past Two Decades of More Sophisticated Surface Spectroscopies and Powerful Computer Technologies Provides Opportunities for Obtaining Substantially Better Understanding of Deactivation Mechanisms.  a Decline in Activity during the Process Can be the Result of Various Physical and Chemical Factors like Blocking of the Catalytically Active Sites and Loss of Catalytically Active Sites Due to the Following Mechanisms.the Mechanisms of Catalyst Deactivation in Ammonia Plant Can be Classified into Different Common Types: (i) Poisoning, (ii) Coking, (iii) Thermal Degradation, (iv) Vapor Compound Formation Accompanied By Transport.  Typical Poisons Are H2S, Pb, Hg, S, P in Primary Reformer and Low Shift, Coke and Deposits on the Catalyst Surface Block the Active Centers and Change the Pore Structure, Thermal Processes and Sintering of the Catalyst Lead to a Loss of Active Surface Area and Catalyst Losses By Evaporation of Components (e. g., formation of volatile metal carbonyls with CO in methanation reaction).  a Brief Discussion about Phenomena of Catalysts Deactivation to Understand These Deactivation Mechanisms, and Illustrate a Case Study about Temporary Ammonia Catalysts Poisoning from Syn. Compressor Lube Oil Escaping and Analysis for the Ammonia Synthesis Converter Catalyst Has Been Carried out Using Hysis Software. This Software Allows an Assessment of the Catalyst Activity Based on Our Kinetic Models
See more of this Group/Topical: Catalysis and Reaction Engineering Division