HW1_with_solutions - Homework Assignment 1 Due January 21 1...

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Homework Assignment 1, Due January 21 1. The reaction A B is to be carried out isothermally in a continuous-flow reactor. Calculate both the CSTR and PFR volumes necessary to consume 99% of A, when the entering molar flowrate is 5 mol/hr, and the entering volumetric flow rate is 10 L/hr, assuming the reaction rate is a. -r A = k with k = 0.05 mol/(hr-L) b. –r A = kC A with k = 0.0001 sec -1 c. –rA = kC A 2 with k = 3 L/(mol-hr) Solution:
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2. What are typical operating conditions of a catalytic cracking reactor used in petroleum refining? Heterogeneous Catalysis in Industrial Practice, 1996. We also described the actual reactor(s) in class. The typical operation consisted of 2 reactors, fluidized beds, with one performing the cracking reaction and the other regenerating the spent catalyst. The catalyst does not last long in the cracking reactor – on the order of a few seconds. 3. Why is pumping (pressurizing) H 2 not straightforward? Temperature – requires lots of intermittent cooling to avoid explosion possibilities.
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4. Los Angeles is in what is described as a basin. The basin covers approximately
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