Reforming process model

While the 13 hydrocarbon lumps accurately represent the hydrocarbon conversion kinetics, they must be delumped for the deactivation kinetics. In addition, delumping is necessary to estimate many of the product properties and process conditions important to an effective reformer process model. These include H2 consumption, recycle gas H2 purity, and key reformate properties such as octane number and vapor pressure. The following three lump types had to be delumped the C5- kinetic lump into Cl to C5 light gas components, the paraffin kinetic lumps into isoparaffin and n-paraffin components, and the Cg+ kinetic lumps into Cg, C9, C10, and Cn components by molecular type. 

The reforming process model is designed to predict the performance of many reactor configurations. The model can be run in four modes, combining adiabatic or isothermal reactors with recycle or single-pass (no recycle)... 

We wish to acknowledge C. D. Prater, J. J. Wise, and V. W. Weekman, Jr., for their valuable guidance and critical support of the KINPTR research and development program. Their strong commitment, both technically and managerially, to the development of a reforming process model based on fundamental reaction kinetics was instrumental to KINPTR s success. 

For an examination of the H20 destabilization on the Si oxide surface containing A1 which possibly promote a transformation of DME to methanol in the steam reforming process, model clusters employed are shown in Figures 25.4-25.8. A cluster shown in Figure 25.4 is a model of a bulk Si oxide, which is a reference material here. In this cluster, Si atoms are located at (0,0,0),... 

Solsvik J, Jakobsen HA (2011) A numerical study of a two property catalyst/sorbent pellet design for the sorption-enhanced steam-methane reforming process modeling complexity and parameter sensitivity study. Chem Eng J 178 407-422... 

Michael P. Ramage, Kenneth R. Graziani, Paul H. Schipper, Frederick J. Krambeck, and Byung C. Choi, KINPTK (Mobil s Kinetic Reforming Model) A Review of Mobil s Industrial Process Modeling Philosophy... 

KINPTR (MOBIL S KINETIC REFORMING MODEL) A REVIEW OF MOBIL S INDUSTRIAL PROCESS MODELING PHILOSOPHY... 

KINPTR is an overall process model thus it simulates all important aspects of the process which affect performance. In order to lay a foundation for upcoming discussions related to KINPTR development, the important aspects of naphtha reforming—chemistry, catalysis, and reactor/hardware design—will be summarized. More extensive reviews are available in the literature (1-3). 

Some research groups working on the modeling of MCFC include the reforming reactions in their process models in different ways. He and Chen [1] and Yoshiba et al. [2] only consider the water-gas shift reaction in a spatially distributed anode channel. Due to its high rate, they assume the shift reaction to be in chemical equilibrium. Lukas and Lee [3] and Park et al. [4] also describe the water-gas shift reaction in equilibrium, but in addition they include the steam reforming reaction of methane as an irreversible reaction with a finite reaction rate. In particular, Park... 

Zheng, J., Strohm, J J., and Song, C. Steam reforming of liquid hydrocarbon fuels for micro-fuel cells. Pre-reforming of model jet fuels over supported metal catalysts. Fuel Processing Technology, 2008, 89 (4), 440. 

We will consider the two semi-infinite bodies shown in Fig. 2.24, which have different, but constant, initial temperatures d01 and d02- Their material properties Ax, a1 and A2, a2 are also different. At time t = 0 both bodies are brought into (thermal) contact with each other along the plane indicated by x = 0. After a very short period of time an average temperature is reached along the plane. Heat flows from body 1 with the higher initial temperature to body 2 which has a lower temperature. The transient conduction process described here serves as a model for the description of short-time contact between two (finite) bodies at different temperatures. Examples of this include the touching of different objects with a hand or foot and the short-time interaction of a heated metal body with a cooled object in reforming processes. 

Jprgensen [71] simulated a sorption enhanced steam reforming process em-plo3dng an extended PGT model derived by Lindborg [91] and Lindborg et al [92]. The reactor configuration used operating the novel chemical process is defined in table 10.6. 

The kinetic model used for the conventional steam reforming process was taken from Xu and Proment [139]. The reaction takes place on a Ni/MgAl20/ catalyst. The kinetics can be described by three equations, where two are independent ... 

---