Acetone-Water Solubility Data 1

[koshyeng]

Sir,

I am looking Acetone-Water solubility data. I need to evaluate water flow requirements when increasing acetone concentration in packed bed absorber inlet gas.

I do not have design data. This scrubber operates at atmospheric pressure and feed gas inlet temperature is 100 deg F.

If I have solubility data, I can draw X-Y equilibrium curve and get Henrys Constant from the slope of the line.

Thanks in Advance.

 

[Chance17]

Acetone and water are mutally and infinitely soluable.
Henry's Law and soluability is not a good absorption model.
You'll need experminental vapor pressure data (X-Y).
Try Goggle.

 

[koshyeng]

Yitbos,

Thank You.

Acetone concentration in inlet gas is 200 ppm(v). Can I still use Henry's law constant since it is very dilute case?

I will also search for X-Y data.

 

[Chance17]

If 200 ppm is the maximum, all you really need is min water to wet the packing.

You know Henry's law is the model used for absorption of partially soluable gases (CO2, chlorine, butane).
Acetone- Water does not fit this model.

As a counter example, you would not consider using Henry's law to model absorbtion of toluene gas in oil.
These are mutally and 100% soluable.

 

[siretb]

I disagree and Henry's law can be used, as long as the concentration remains low. It's not a question of total solubility, the issue is the domain of validity of P=H x (Henri) In this case, it will hold for low concentrations only. I'd say that, up to 1% molefrac in the water the KVL coefficient would not change too much, at room temperature
For the design of the scrubber, select a good wetting rate (20 m3/m2/hr , estimate the NTU from the packing data and the physical properties, and you should be OK)

I found at least a reference using Henry's law for acetobe/water. I do not know how good this data is

Revue Journal of Atmospheric Chemistry
Éditeur Springer Netherlands
ISSN 0167-7764 (Print) 1573-0662 (Online)
Numéro Volume 20, Number 1 / janvier 1995
DOI 10.1007/BF01099916
Pages 17-34
Subject Collection Earth and Environmental Science

Henry's law coefficients for aqueous solutions of acetone, acetaldehyde and acetonitrile, and equilibrium constants for the addition compounds of acetone and acetaldehyde with bisulfite
H. -J. Benkelberg1, S. Hamm1 and P. Warneck1

Abstract Vapor phase concentrations of acetone, acetaldehyde and acetonitrile over their aqueous solutions were measured to determine Henry's law partition coefficients for these compounds in the temperature range 5–40 °C. The results are for acetone: ln(H 1/atm)=–(5286±100)T+(18.4±0.3