Example - Gas Phase PFR

Example - Gas Phase PFR - CHE 4151 Jennings Example - Gas...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
CHE 4151 Jennings Example - Gas Phase PFR [ Problem 4 - 8, pp.172-173 in Fogler, 2nd.Ed., parts (a) - (d) only. ] The gas-phase reaction, A + 2 B ── > 2 D, is to be carried out in an isothermal plug-flow reactor at 5.0 atm. The mole fractions of the feedstreams are: A = 0.20, B = 0.50, and inerts = 0.30. a) What is the steady-state volumetric flow rate at any point in the reactor if the pressure drop due to fluid friction can be ignored? b) What are the expressions for the concentrations of A, B, and D as a function of conversion at any point along the reactor? c) What is the feed concentration (units: mol/L) of A if the feed temperature is 55hC? d) How large must the plug-flow reactor be to achieve a conversion (based on A) of 0.70 if the temperature in the reactor is uniform (55hC), the volumetric feed rate is 50 L/min, and the rate law at 55hC is - r A = 2.5 C A 1 / 2 C B mol / L-min ANSWER: The reaction is non-equimolar and takes place in the gas phase. The volumetric flow rate out of the reactor (Q) will therefore be different from the flow rate into the
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 2

Example - Gas Phase PFR - CHE 4151 Jennings Example - Gas...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online