Saturated Brine
Saturated Brine
(OP)
Hello all,
I have an unusual problem regarding the properties of saturated brine containing both KCl and NaCl. This application is at a minesite, where a continuous flow of saturated brine has to be delivered down a 1,000m deep mine shaft from the surface. The fluid temperature at the surface will be 25 degrees C and the fluid will take about 3 minutes to traverse the shaft from top to bottom. The fluid will be subject to the pressure rise in the pipeline of about 100 bar, with no pressure relief at the shaft bottom. The literature that I find is plentiful regarding the effect of temperature on the equilibrium of the solubility of the salts in the fluid, but nowhere do I see what happens if the pressure is raised. My concern is the possibility of precipitation of any of the salts from the solution if the pressure is increased. I don't know why it would, but if it did, the project would have a 'fatal flaw', which obviously cannot be accepted.
Does anyone know of the effect of pressure (at constant temperature) on a saturated brine solution.
Thanks,
ECD40
I have an unusual problem regarding the properties of saturated brine containing both KCl and NaCl. This application is at a minesite, where a continuous flow of saturated brine has to be delivered down a 1,000m deep mine shaft from the surface. The fluid temperature at the surface will be 25 degrees C and the fluid will take about 3 minutes to traverse the shaft from top to bottom. The fluid will be subject to the pressure rise in the pipeline of about 100 bar, with no pressure relief at the shaft bottom. The literature that I find is plentiful regarding the effect of temperature on the equilibrium of the solubility of the salts in the fluid, but nowhere do I see what happens if the pressure is raised. My concern is the possibility of precipitation of any of the salts from the solution if the pressure is increased. I don't know why it would, but if it did, the project would have a 'fatal flaw', which obviously cannot be accepted.
Does anyone know of the effect of pressure (at constant temperature) on a saturated brine solution.
Thanks,
ECD40





RE: Saturated Brine
RE: Saturated Brine
The operating pressure of 100barg is much less than the critical pressure of water at approx 230barg. There is some brief discussion of the behaviour of water as it approches supercritical conditions in Perry Chem Engg Handbook 7th edition pg 22-15 if it helps in any way.
RE: Saturated Brine
Thanks again for your participation and any further ideas will be appreciated.
ECD40
RE: Saturated Brine
RE: Saturated Brine
RE: Saturated Brine