Somewhat related- I've seen rubber lining in acid tanks fail when water is added to concentrated sulphuric acid due to the formation of a hot zone at the interface. The other reason for adding caustic to water is that under most circumstances the water is the larger volume of the two (with...
I'm not clear what you're evaporating here- although you do have a reference to NaCl above. Is it a brine solution? Something else?
The operating temperature (under vacuum?) is also not provided which will impact on material selection for corrosion.
With a fixed speed recirculation pump...
Thanks for getting back to us. Pay careful attention to the reply from George though. Carbon steel is fine- but if you dilute the acid at all (e.g. contamination or flush the line)- expect to have a pipe with many holes.
As a chem eng/metallurgist the first part of any answer I give starts with...
Continuing with the thread resurrection- I'd address one point in the original post
Some people after 7-10 years haven't become seniors. After that, it's harder to become supervisor (I guess you need 10+ years) and supervisors earn 60-80k
A look at the maths will tell you it's not just about the...
Make sure the Na2CO3 is already dissolved before you add it to the reactor or you'll coat the solid Na2CO3 with CaCO3.
I would mix the two streams in one tank and use a second tank for solid/liquid separation if required. The reaction will be very fast, the tank residence time will be more...
I would expect little impact in the particle size density over the pipeline distance given this is mines tailings stream (unless it's a very soft ore). I'd expect no change in slurry density either.
The exception to the above is the tee pieces- they may result in preferential splitting of...
Another method is using laser diffraction. There are commercial instruments available for that. Screen out the larger sizes (+150um) using a screen if necessary and then laser size the remainder.
Your cyclone will have a D50 cut size- when operating at design this will be the size of particles...
Pump performance is measured in metres of liquid- pressure is convenient- but as noted above- if the density changes the pressure will be different for a given pump.
The mixture density may be increasing as you go down in temperature (the water will certainly increase in temperature)- so the...
Nothing wrong with having a water tank on the roof- they're relatively common for solar systems (at least in Oz).
I've got a 300L tank mounted horizontally on my roof and there were no changes/structural reinforcing done when it was installed.
Question to the OP- can you pressurised the ground...
1. Your pump needs to be designed with enough head to overcome the highest static head, but under steady state as you've seen- you do get head recovery on the down pipes. The minimum head recovery you can achieve is the difference between the vapour pressure of the liquid and the atmospheric...
Do you need a continuous flow for sampling? If yes- then you'll need to install a pump or run the line lower to get one.
If you just need to sample more regularly- construct, what we would call a sample bomb.
A small vessel or pipe section with small valves on each end that match your sample...
If the data is real then he should be able to distinguish between the cases. The LMTD variation is significant with only a small change in the heat flux.
As a chem eng/metallurgist the first part of any answer I give starts with "It Depends"
That fitting underneath the suction gauge (the one reading zero) isn't an isolating valve for the gauge is it? It doesn't look like a normal reducer and could be a valve with a handle missing (spindle on the far side from where the photo was taken).
I can see one in the background on a...
Regarding your heat exchange calcs- have you done them both ways? (using mass flow of seawater and temperature change for case A and mass flow of ammonia plus temperature/phase change for Case B)?
If they don't match it might point to an issue with either a temperature or mass flow measurement...
