The New Jersey Institute of Technology's
Electronic Theses & Dissertations Project

Title:	Predictions of catalyst utilization with continuous replacement in multistage continuous reactors from batch reactor data
Author:	Feinberg, Norman M.
View Online:	njit-etd1972-016 (vi, 37 pages ~ 1.1 MB pdf)
Department:	Department of Chemical Engineering and Chemistry
Degree:	Master of Science
Program:	Chemical Engineering
Document Type:	Thesis
Advisory Committee:	McCormick, John E. (Committee chair) Hanesian, Deran (Committee member) Roche, Edward Charles, Jr. (Committee member)
Date:	1972-06
Keywords:	Catalysts Fluidization
Availability:	Unrestricted
Abstract:	This thesis presents a new equation for predicting catalyst utilization with continuous replacement in multistage continuous reactors from batch reactor data. An equation is derived from experimental data for a. no-replacement system which predicts catalyst activity as a function of time. The assumption of constant inventory, constant replacement rate and perfect mixing permit the calculation of catalyst age distribution. By combining age distribution with a measure of catalyst productivity, as determined from activity as a function of time, an equation for catalyst utilization was derived. The case used to prepare this equation was where the activity decline curve appears as a straight line on log-log paper. The resulting equation which describes catalyst utilization is as follows: Catalyst utilization = ((n-b)Γn-b)/Γ(n))/r1-b where: n is the number of reactors in series, Γis the gamma function, and b is the slope of the catalyst activity curve on a log-log plot.