化学工学
Print ISSN : 0375-9253
シクロペンタジエンの接触空気酸化による無水マレイン酸の合成
その化学工学的研究
伊香輪 恒男松本 基太郎永廻 登
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1959 年 23 巻 5 号 p. 291-298

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Experimental rate equations for reactor design have been studied. Rates of the reactions were measured over a range of concentration of cyclopentadiene, 0.2-0.4 mole%, reaction temperature, 380-435°C, flow rate of gas, 1-2m3/hr, and volume of V2O5MoO3 catalyst, 10-30cc, by means of the reactor shown in Fig. 1.
Experimental results can be expressed by the equations (2), (3) and (4).
From the experimental results, it is concluded that cyclopentadiene is oxidized by two simultaneous reactions taking place at the temperatures between 380 and 435°C, the first one giving maleic anhydride and the second one causing complete combustion, the ratio k1/k2 depending only on the reaction temperatures.
Calculated and observed mole fractions of the cyclopentadiene used as against 2/N are plotted in Figs. 9 and 10.
The longitudinal temperature profile of the catalyst bed in the tubular reactor as calculated by means of the rate equations and the heat balance equation agrees well with the observed one as shown in Fig. 11.
A three-stage adiabatic converter with intercooler between catalyst beds is designed by applying the rate equations. The influence of the catalyst-bed length on the calculated reaction temperature and yield of maleic anhydride is shown in Fig. 12.

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