Plot the conversion and species flow rates

Reference no: EM13980871

The reaction is carried CH₂O ⇔ CO + H₂ is carried out in a 0.5 dm³ membrane reactor of 0.1 m diameter at 298 K (for which the rate constant is 1/min) and 15 psi at a flow of 10 mol/min. The feed is pure formaldehyde. The membrane only permits hydrogen to pass through it and has a diffusivity of 5x10^-5 m²/s.

1105_Calculate the reactor size.png

(a) Plot the conversion and species flow rates against the axial distance along the reactor. (b) Redo the analysis assuming the membrane is removed and the reactor operates as a simple PFR. (c) Determine the size of PFR necessary to achieve the same conversion as found in (a).

Sixty percent carbon dioxide (CO₂) in a flue gas is to be removed by bubbling through a solution of sodium hydroxide (NaOH). The reaction is mass-transfer limited.

Calculate the reactor size (length and diameter) necessary to remove 99.9% of the carbon dioxide. The flow rate of the flue gas is 0.05 m³/sec and the flow rate of the sodium hydroxide is 0.001 m³/sec. The reactor must operate in the bubbly flow regime, so be sure to recommend a type of sparger to use.

Reference no: EM13980871

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