Optimalcontrol of reactors experiencing catalyst decay.

Çulfaz, Müjgan


Dynamic analysis of trickle bed reactors.
Eroglu, İnci; Department of Chemical Engineering (1981)
Synthesis of mesoporous catalysts and their performance in pyrolysis of polyethylene
Aydemir, Buğçe; Sezgi, Naime Aslı; Department of Chemical Engineering (2010)
Plastic materials are widely used throughout the world due to their low prices and easy processing methods. A serious problem of environmental pollution is brought with the widespread use of these materials due to their non-biodegradabilty. For this reason, plastic materials are degraded into lower molecular weight liquid and gaseous products which are potential raw materials and fuels for petrochemical industry. The use of catalysts enhances the formation of more valuable hydrocarbons at lower reaction tem...
Theoretical investigation of effects of flow oscillations on ultrasound Doppler velocity measurements
Koseli, Volkan; Uludağ, Yusuf (Elsevier BV, 2012-02-01)
Effects of flow oscillations on spectrum of Ultrasound Doppler Velocimetry (UDV) signals were investigated theoretically and numerically. A laminar pipe flow with a superimposed oscillating component was considered. Negative impact of oscillation on the ultrasound signal hence on the flow images was observed in the form of spreading of spectral ultrasound signal energy around mean component, leading to image artifacts. Both analytical and numerical results revealed the strong effect of a group of parameters...
Design of prototype reactor for hydrogen production from sodium borohydride
Boran, Aslı; Eroğlu, İnci; Department of Chemical Engineering (2011)
Sodium borohydride (NaBH4) offers a simple and safe technology for storage and on demand production of hydrogen being a promising and a feasible method for fuel cell applications. The objectives of the present study are to emphasize the role of sodium borohydride as a part of future hydrogen energy system, to investigate the kinetics of the catalytic hydrolysis reaction of NaBH4 in a batch and flow system with respect to temperature, concentration, catalyst and flow rate for flow reactor by proposing a kine...
Numerical simulation of laminar reaction flows
Tarhan, Tanıl; Selçuk, Nevin; Department of Chemical Engineering (2004)
Novel sequential and parallel computational fluid dynamic (CFD) codes based on method of lines (MOL) approach were developed for the numerical simulation of multi-component reacting flows using detailed transport and thermodynamic models. Both codes were applied to the prediction of a confined axisymmetric laminar co-flowing methane-air diffusion flame for which experimental data were available in the literature. Flame-sheet model for infinite-rate chemistry and one-, two-, and five- and ten-step reduced fi...
Citation Formats
M. Çulfaz, “Optimalcontrol of reactors experiencing catalyst decay.,” Ph.D. - Doctoral Program, Middle East Technical University, 1982.