Pressurized batch reactor

Since the volume depends on conversion or time in a constant pressure batch reactor, consider the mole balance in relation to the fractional conversion X. From the stoichiometry. 

The sitosterol hydrogenation and deactivation kinetics was determined in a shaking constant-pressure batch reactor by using the new type of synthetic support material (mesoporous carbon Sibunit) for palladium (4wt% Pd) [55]. 

For high-pressure operation, safety considerations are extremely important and care must be taken to ensure proper mechanical design. Closures must be designed to withstand the same maximum pressure as the rest of the autoclave. Various authors have treated the problems involved in designing medium- and high-pressure batch reactors (2-4). 

A zero order gas reaction, A = rB, proceeds in a constant volume bomb, with 20% inerts, and the pressure rises from 1.0 to 1.3 atm in 2 min. If the same reaction takes place in a constant pressure batch reactor, what is the fractional change in volume in 4 min if the feed is at 3 atm and consists of 40% inerts ... 

In a constant-pressure batch reactor the mass balance on A becomes... 

The reaction is second order and is performed in an isothermal constant pressure batch reactor. Determine the conversion with time... 

Discovery Technologies) with a circular arrangement of 12 screw-capped gas-tied glass tubes agitated by magnetic stirring. The second reactor is a commercial pressure batch reactor with a turbine and baffles (Series 4590 from Parr Instruments). The third reactor was the helical falling-film microreactor. 

A first-order homogeneous reaction of A going to 3B is carried out in a constant pressure batch reactor. It is found that starting with pure A the volume after 12 min is increased by 70 percent at a pressure of 1.8 atm. If the same reaction is to be carried out in a constant volume reactor and the initial pressure is 1.8 atm, calculate the time required to bring the pressure to 2.5 atm. 

Express Pi and C,- for all species as fnnctions of couveistrm for a constant-pressure batch reactor operated isothermally. Express volume as a function of X. 

The kinetics of a gas-phase reaction Aj -> 2A were studied in a constant-pressure batch reactor in which the volume was measured as a function of time. [1st Ed P5-6]... 

Constant-pressure batch reactor. To write the mole balance for this reactor in terms of concentration, we again use the feet that... 

As a second example, consider a gas phase reaction A —> 2B + 3C carried out in a constant pressure batch reactor at SOO F and 6 atm pressure. A conversion of 70% of A to its products was obtained after an hour. The pilot plant is to be an ideal plug flow reactor and is required to handle 500 cu ft/hr of A at SOOT and a constant pressure of 20 atm. What volume of reactor is needed to give 95 % conversion ... 

Exercise 4.2 Constant volume versus constant pressure batch reactor... 

As mentioned earlier in section 2.2, a two-step mechanism via intermediate formation of methanol has been proposed by Adebajo et al, [21-23, 26, 36] for the oxidative mcthylation of benzene with methane over acidic zeolites in a high-pressure batch reactor. In view of this mechanism, a preliminary investigation has been carried out by these workers [24] on the reaction of toluene with methane over acidic ZSM-5 catalysts in a batch reactor containing residual air to determine the actual contribution of direct mcthylation (via intermediate methanol formation) to the observed reaction products. The reactions were carried out at 400 C and 6.9 MPa pressure. The major reaction products obtained by these wwkers were benzene and xylenes. Smaller amounts of ethylbenzene, trimethylbenzene and other higher aromatics were also produced. Over acidic catalysis, the conversion of toluene can, in principle occur through two different reaction pathways mcthylation by methane via methanol (as in the case of benzene mcthylation) and disproportionation, as shown in equations (4) and (S) below ... 

Viewed from the perspective of ethylene oxide, these reactions are competitive by contrast, from the perspective of the amines, they are consecutive. An analysis to determine the concentrations of the indicated alkanolamines as functions of time in a pressurized batch reactor was considered in Illustration 5.6. However, MEA, DEA, and TEA are conomodity chemicals that are produced on an industrial scale in continuous flow reactors. 

Several MOFs as UIO-66, UIO-ee-NH, Mg-MOF-74, MIL-101, CuBTC, ZIF-8, IRMOF-3, and MOF-5 with different acid-base properties were tested as catalysts for the synthesis of styrene carbonate (SC) from styrene oxide (SO) with CO using a high-pressure batch reactor [116]. 

Figure 3.11 Computed inverse ignition deiays of fuei-iean H2/air mixtures ( =0.30 and 0.10) in a constant pressure batch reactor at different pressures and initial temperatures. Adapted from Ghermay et al. (2011) (with permission).

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