(478f) Magnetic Imaging of AGOs II: Detection of Molecules In the Feed and Relation to Product Yields
AIChE Annual Meeting
Wednesday, October 19, 2011 - 10:10am to 10:30am
This work reports on a system for the Magnetic Imaging of Pyrolysis Feedstocks, acronym MIPF (pronounced with P silent), that comprizes three facets. First, sample preparation incorporates internal standards into the feedstock oils, to enable precise analysis of the NMR experiments. Second, NMR experiments provide quantitative C13 and H1 spectra, with spectral features elaborated by 1-D and 2-D procedures such as DEPT and HETCOR. Third, data analysis employs (1) an Integral Regions train, which provides coarse but complete information about all types of carbon and hydrogen atoms in a feedstock, and (2) a Canonical Groups train, which provides high-level information about chemical moieties, but detects only ~1/3 of all the atoms in the feedstock. Examples are presented to illustrate how the MIPF parameters of an AGO feedstock might presage its performance in an olefin plant. Overall Gas, RPG and PFO yields are related to the IR train. The CG train is elaborated for two AGO feedstocks to detect a limited number of actual aliphatic and aromatic molecules within them, and to assess their influence on olefin and aromatic product yields from high severity steam cracking.