Author : Zhen Hou
Publisher :
ISBN 13 :
Total Pages : 234 pages
Book Rating : 4.:/5 (752 download)
Book Synopsis Software Tools for Molecule-based Kinetic Modeling of Complex Systems by : Zhen Hou
Download or read book Software Tools for Molecule-based Kinetic Modeling of Complex Systems written by Zhen Hou and published by . This book was released on 2011 with total page 234 pages. Available in PDF, EPUB and Kindle. Book excerpt: Modeling complex process chemistries with complex feedstocks involves several aspects: composition modeling of the complex feedstock, reaction modeling of the complex chemistry, and structure property correlations to provide feed and product property estimation. This thesis was developed to automate these modeling techniques and to provide an integrated approach for combing these modeling aspects into a continuous package. The first contribution of this thesis is the development of an automated composition modeling tool called the composition model editor (CME). CME uses a statistical hybrid approach to describe a complex feedstock in terms of a set of structural attributes expressed by probability density functions (PDF). Through optimizing a limited set of attribute PDF parameters, CME can obtain a molecular composition array (MCA) for a feedstock based on limited analytical information. The second contribution of this thesis is the development of a series of automated techniques that are useful for reaction modeling. Firstly, an attribute reaction modeling (ARM) approach is developed for complex process chemistries. ARM can condense a kinetic model by allowing the number of ODEs to be far less than the number of species for a complex system, while maintaining the full molecular detail of the model. Secondly, reaction family and LFER concepts are used to control the number of kinetic parameters for a complex model. Thirdly, the ability to impose LHHW rate law allows for heterogeneous systems involving with catalysts. Last but not least, various process configurations are addressed to satisfy the kinetic modeling for complex process chemistries. The third and final contribution of this thesis is the creation of a structure correlation module used to provide data support for kinetic modeling as well as composition modeling. Group contribution methods and the quantum chemistry package are applied to estimate thermodynamic properties. A supplemental database is developed to manage property data in a high efficient way. The above contributions were then successfully applied to the development of detailed kinetic and feedstock models for complex process chemistries, including complex feedstock characterizations, lignin pyrolysis, and resid pyrolysis.