Power presses definition

The shortage of petroleum after World War I induced an intense search for a gasoline substitute in the form of alcohol. The trade press felt alcohol would definitely replace gasoline as a fuel at some point. The advantages ot alcohol cited in the technical press included greater power and elimination of knocking. 

PFR and CSTR in PRO/II can work for liquid and vapor phases only consequently, it must be declared that all components involved in the reaction are vapor and liquid phases (solid should be excluded). After selecting component click on Components Phases, and change the components phase to liquid and vapor only. From the Thermodynamic Data select BWRS which is the most suitable thermodynamic fluid package for such components. Build the PFR process flow sheet and specify inlet stream conditions (760°C, 162 kPa). The inlet mass flow rate of acetone is 7.85 kg/h. Under the Input menu, select Reaction Data, use the power law, and enter stoichiometric coefficients. Double click on the reactor in the PFD area and select the reaction set name. Click on Unit Reaction Definitions and specify the kinetic data as shown in Figure 5.21. Press Reactor Data, indicate 6.366 m for length and 1 m for the diameter (total volume of 5 m ). The process flow sheet and stream table properties are exposed in Figure 5.22. 

The reactor was shut down by pressing the emergency button when the pile power had reached 1 kW. The critical size was certainly much smaller than had been predicted and calculations were immediately started to determine how much extra reactivity would be available. It was clear from even the simplest of calculations that the steel absorber which had been provided would definitely be required following the loss of reactivity due to xenon and temperature was as calculated. 

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