Reactor, sample

Figure 3.18 Generic process reactor alternatively equipped with PAT sensors or probes, shown at typical deployment locations at different reactor heights. TOS analysis again results in rejection of all options presented. The critique leveled against incorrect PAT sensor deployment in ducted flow (Figure 3.16) applies in full force for reactor sampling as well.

Alternatively, for nonequilibrium process streams, where a pumped reactor sample recycle line is available, in-line fiber-optic transmission cells or probes (Figures 5.26 and 5.27) can be used to minimize sample transport. It is highly desirable that some form of pumped sample bypass loop is available for installation of the cell or probe, so that isolation and cleaning can take place periodically for background reference measurement. 

Cooler Thermocouple Reactor Sampling valve Heatina jacket Condenser 1 Condenser 2... 

Co-Mo-alumina catalysts (16). The selection of four hydrotreated samples for analysis, termed reactor-samples 1 through 4 reflects the following considerations. The variations in hydro-treating conditions presented in Table I should not drastically... 

Comparison of the weight percentages in Table VI for the reactor samples with those for the feedstock reveals a net nonreactivity for compounds containing the pyrrolic nucleus. The -11(N,0) and -17(N,0) compounds seem to be more reactive than the Z(N) compounds. 

The distribution of bases in the upgraded anthracene oil reflects the various rate constants for the hydrodenitrogenation networks under the specified reaction conditions and catalysts. Consequently, the chemistry of the first homologs in the -11(N) and in the -17(N) series, which account for 0.9 and 1.4% of the feedstock, respectively, is qualitatively considered in terms of the reaction networks for hydrodenitrogenation of known compounds. For ease of presentation, the discussion is formulated in terms of the relevant analytical data for the feedstock and reactor-sample 1. 

TABLE IX. Moles of Bases at Molecular Weights 129-135 In Feed and Reactor-Sample 1... 

Table X. Moles of Azaanthracenes/Azaphenanthrenes and Their Hydrogenated Analogs at Molecular Weights 179-189 in Feed and Reactor-Sample 1.

C13H11N C13H13N an< C13H15N or reactor samP- -e in Table x-At least four octahydro-Ofl/s 187) and three decahydro- m/z 189) 3-ring azaaromatics and were identified in the reactor-sample-1 bases by GC/MS. Thus, in Table X the moles of C H N and... 

C13H19N in reactor-sample 1 were calculated using the weight... 

Neutrals. Table XI presents compositional data for the furan and thiophene compound types present in the neutral fractions from the feed and the products. Results for only two reactor samples are given because of insignificant variations in the analytical data for these Z(0) and Z(S) compound types between the four upgraded liquids. Dibenzofurans and dibenzothio-phenes were identified by GC/MS. 

X10 moles of C-16 and C-17 homologs in the -18(0) series in product 1. Similar results are observed for reactor-sample 3. This result suggests the hydrogenation of benzonaphthenofurans produces tetrahydroderivatives. 

Values are the averages of the total weight percents for each Z(H) series in column 1 for reactor-samples 1 through 4. 

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