By Octave Levenspiel
Chemical response engineering is anxious with the exploitation of chemical reactions on a advertisement scale. it is aim is the profitable layout and operation of chemical reactors. this article emphasizes qualitative arguments, uncomplicated layout equipment, graphical approaches, and common comparability of functions of the main reactor kinds. basic rules are handled first, and are then prolonged to the extra complicated.
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Chemical response engineering is anxious with the exploitation of chemical reactions on a advertisement scale. it really is target is the winning layout and operation of chemical reactors. this article emphasizes qualitative arguments, easy layout tools, graphical methods, and widespread comparability of services of the foremost reactor kinds.
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Additional resources for Chemical Reaction Engineering
The maximum allowable temperature for a reactor is 800 K. At present our operating set point is 780 K, the 20-K margin of safety to account for fluctuating feed, sluggish controls, etc. Now, with a more sophisticated control system we would be able to raise our set point to 792 K with the same margin of safety that we now have. By how much can the reaction rate, hence, production rate, be raised by this change if the reaction taking place in the reactor has an activation energy of 175 kJ/mol? 13.
For a gas reaction at 400 K the rate is reported as (a) What are the units of the rate constant? 8. The decomposition of nitrous oxide is found to proceed as follows: What is the order of this reaction with respect to N,O, and overall? 9. The pyrolysis of ethane proceeds with an activation energy of about 300 kJImol. How much faster is the decomposition at 650°C than at 500"C? 10. A 1100-K n-nonane thermally cracks (breaks down into smaller molecules) 20 times as rapidly as at 1000 K. Find the activation energy for this decomposition.
13. Every May 22 I plant one watermelon seed. I water it, I fight slugs, I pray, I watch my beauty grow, and finally the day comes when the melon ripens. I then harvest and feast. Of course, some years are sad, like 1980, when a bluejay flew off with the seed. Anyway, six summers were a pure joy and for these I've tabulated the number of growing days versus the mean daytime temperature during the growing season. Does the temperature affect the growth rate? If so, represent this by an activation energy.
Chemical Reaction Engineering by Octave Levenspiel