Product distribution vs. temperature for

The examination of the product distribution vs. residence time curves at four temperature levels revealed that the same mechanism applied for the reaction within the present experimental conditions, so that, in Figure 1, the product distribution vs. conversion curves were adopted. 

In using the obtained low-pressure results to predict what will happen in a higher pressure environment, the decomposition lifetime vs. temperature results should be directly applicable. It is not unlikely, however, that the product distribution might be different. The reason for the difference is that one likely mechanism for production of C5H6 - - C2H2 is sequential isomerization, followed by C2H2 elimination ... 

The product distribution (wt%) for the reaction of m-xylene on SAPO-31 at various temperatures and different WHS Vs are presented in table 2. 

As shown in Fig. 8, the airflow vs. bowl capacity for two types of dryers from the same vendor approach linearity as the size of the dryer increases. A similar result is observed for the ratio of the heating vs. bowl capacity for the same dryers, as shown in Fig. 9. Therefore, for a product with constant composition (moisture content) and characteristics (particle size distribution), the time required to dry two different size batches to the same resultant moisture content should be the same if the same inlet temperature was used, and machines with equivalent air flow and heating vs. bowl capacity were used. However, at small scale, differences in the airflow and heating vs. bowl capacity parameters... 

The intrinsic viscosity is a fundamental property of the polymer sample in solution, and thus the intrinsic viscosity distribution (TVD) (C vs. log[77]) with associated statistical moments may be used to characterize polymers without converting this distribution into a MWD. The FVD can be determined in GPC-viscometry directly, without resorting to universal calibration. This distribution depends not only on the polymer sample itself but also on the solvent and the temperature, and hence does not possess the versatihty of the MWD. Nevertheless, the IVD measurement in GPC-viscometry is much less sensitive to experimental conditions than any cahbration curve and, hence, can be successfully used in industry (e.g., for quality control of polymers in production). 

Fig. 8 indicates the plot of hr vs. a, and Tad vs. a. A plot of hr vs. a gave a straight line, but that of Tad vs. a was widely scattered. The distribution of plots may be attributed to the uncertainty in the estimation of residual H2O in product gas, which was calculated from equilibrium of shift reaction. It is presumed that the gas composition in UCG reactor has not been attained to chemical equilibrium. The approach to improve the reliability of estimation for Tad without depending upon the equilibrium theory has not been reported. Our attempt might be the first to predict the temperature of UCG reactor. 

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