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The kinetic experiments were carried out in a continuous stirred tank reactor. Practically important ranges of SRC‐II reactor temperature (444–466°C), pressure (10.4–20.8 MPa), nominal slurry residence time (0.54–1.62 h), coal concentration in the feed slurry (25–35 wt%), and inorganic mineral matter concentration (4.75–13.43 wt%) were covered in a total of 43 experimental runs. In each of the experimental runs, the feed slurry was formulated by using vacuum tower bottoms from SRC‐II pilot plants using the same feed coal (Powhatan No. 5), to obtain feed compositions similar to those obtained in SRC‐II pilot‐plant recycle operation. The kinetic model considers the overall conversion to be achieved in two stages. The first stage is the instantaneous dissolution of coal and in the rate controlled second stage all the reactive organic components in the liquid phase are initially assumed to react, each yielding components lighter than itself. The distribution of products in each reaction stage is considered to be independent of the operating conditions. The best rate controlled (second stage) reaction scheme and values of the unknown parameters are obtained by minimizing the overall difference (i.e. for all the components over all the runs) between the measured and model predicted mass fractions of the various components in the reactor. This analysis identifies the reaction of solvent refined coal (pyridine soluble organic matter boiling above 482°C) to be the only significant reaction in the second stage and its rate is determined to be ‐rSRC = 1.567 × 105 exp (‐79.16/RT) · p0.28 H 2 · XASH, kg/L h. Overall error in this analysis yielding the reaction scheme, rSRC and values of product distribution coefficients for both the reaction stages is less than 8% absolute i.e. ±4%.

trogen species. Although we cannot definitively separate the contributions of the PACN and soot to the yield of gtiseous nitrogen, the data suggest that, in the PAC conversion regime of our measurements, the net effect of the conversion of the nitrogen in PAC is the production of gaseous nitrogen species, most probably HCN.

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A process is proposed in which the nitrogen-containing compounds found in raw shale oil are removed by mild hydrodenitrogenation followed by resin ion exchange. Data for jet fuel (154-271 "C) and diesel fuel (271-343 "C) cuts are presented. More specifically, this study concentrates on the removal of nitrogen-containing compounds by ion exchange from two shalederived jet fuel fractions. These two fractions represent two levels (0.28 and 0.18 wt % ) of hydrodenitrogenation on the same shale oil feed. Amberlyst-15, a macroreticular, strongly acidic, cationsxchange resin, was used excluslvely throughout this study. Three types of experiments were performed: batch equilibrium experiments, batch sorption kinetics studies, and dynamic ion-exchange column performance tests. The Langmuir sorption isotherm was found to describe the equilibrium behavior of the shale oil/ion-exchange resin system. The sorption kinetics are described by using a quadratic-driving-force model. Dynamic modeling, assuming intraparticle diffusion control and including the results of the batch equilibrium and kinetic experiments, is able to predict the results of the dynamic ion-exchange column performance (breakthrough) curves.