Boiling point of aqueous ClO2

[pianoman1]

Anyone have a table or curve for the boiling point of ClO2 at various pressures? We're installing a ClO2 heater and need to size a relief valve for it and set permissives and interlocks. I'm specifically concerned about the pressure required to keep ClO2 in solution at 160F. Concentration is 11 g/l, vessel design pressure is 225 psig, operating pressure is ~190 psig.

Thanks for any feedback.

 

[siretb]

Use the following (Henri's law)

log10(x wt) = -569.10+14685/T+232.4*log10(T)-0.0189 T x wt mass fraction (zero to one) T in °K

at 160°F It gives for one ATM of ClO2 0.95% wt (9.5 g/l)
I also have at 333°K 15.6 g/l yields atmospheric
water has a partial pressure of about 0.33 atm at 160°F

Since Henri's law states that P is proportional to x
for 1.1 wt I calculate P= 1*1.1/0.95=1.16 atm
add the 0.33 for water
that makes a total pressure of 1.49 atm
You need more than 1.5 atm to contain boiling

Be careful, I don't know how good the data is.
Hope it helps

 

[pianoman1]

Thanks, suretb, I'll take a harder looks at this with your equations.