Plot the conversion and species flow rates

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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.

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(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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