Why is the optimal temperature a point rather than a line
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2) Why is the optimal temperature a single point rather than a line? For example, using a high temperature T1 to achieve high speed and using T2 to achieve high equilibrium – for a given set of operating conditions, the path from T1 to T2 must be unique, right? The textbook covers only one point, just to save trouble, right?
What does it mean that your continuous route is unique? The optimal temperature is generally determined by taking into account both the reaction rate and the reaction conversion rate, to find the point that is most economical from a theoretical standpoint; just like a parabola has a maximum or minimum point, in practical use a range is established based on this point
Thank you. Taking a tubular reactor as an example, if the optimal temperature is 1000 degrees, should we set the value to 1200 at the initial stage in order to increase the rate? The temperature is then reduced to 1,000 degrees again to improve the yield. Is that okay?
The principle of the Fushi reactor is similar. In this case, the optimal temperature should be a straight line. Isn’t that right?
Theoretically, there is no problem with this, but in actual industrial practice it is not used in this way. The optimal reaction temperature refers to the temperature at which the catalyst has the highest activity and the fastest reaction rate; it has nothing to do with equilibrium. For example, if equilibrium is reached in 1 second at 1200°C, it takes 2 seconds at 1000°C. When the operating temperature is 1000°C, due to the reduced concentration of the reactants, it may still take 2 seconds or a similar amount of time to reach equilibrium. In such cases, the amount of catalyst required doubles, and the reactor size also increases. A typical example is the synthesis of ammonia, which also employs a cyclic reaction process