solid aluminum reaction

[ermorgan]

Hello,
I'd like to model a water-aluminum reaction where the aluminum is a solid, water a liquid.
The reaction is:
2Al+6H2O-->2Al(OH)3+3H2 (dH=-835kJ)
Is there a good way to add aluminum as a reactant, and aluminum hydroxide as a product?

[ermorgan]

Update: I should have searched more for "solids" before posting. I successfully updated the database. However, I'm having trouble actually running the reaction. It's a three phase reaction, which one should I choose? In one of the example flowsheets BTG_Pyrolysis, it used "Overall" as the phase, which didn’t work for me. Is that something I need to expose?

[jasper]

COUSCOUS' fixed conversion reactor does not care which phase the compounds are in, but you have to specify the conversion of each reaction. You could of course use information streams and information calculators, and controllers, to deal with the calculation of the conversion.

Alternatively you could make a custom unit operation, e.g. in

- https://www.amsterchem.com/matlabunitop.html
- https://www.amsterchem.com/scilabunitop.html
- https://www.amsterchem.com/excelunitop.html

[ermorgan]

Thanks as always Jasper. I'm still fiddling with the reactor. Is there a way for the reaction to generate pressure in the reactor? The reaction is exothermic, and generates gaseous products, so with suitable valving the reactor should self-pressurize. Does this require a custom valve? Or am I setting up the default valve wrong by specifying outlet pressure?

[jasper]

So what is governing the reactor pressure exactly? What should be the value of pressure?