Learning Forum

[sidharthasondh]

I am working on fixed bed reactor. I am giving the input for fuel via coal calculator. Giving input of Ultimate and proximate analysis. I have applied both homogeneous and heterogeneous reactions through species transport, but the problem is that I am not getting the desired concentration of the syngas. First i am generating the pdf and then i switch to species transport and apply all the reactions. Is there any option to input reaction temperature.

I am net in this field so kindly help me by providing your valuable feedback.

[Rob]

How are you modelling the coal?

[sidharthasondh]

Hi Rob i am modelling it via the coal calculator tool.

[DrAmine]

And the heterogeneous reactions? Is it only DPM model with species transport?

[sidharthasondh]

After generating the pdf from non premixed, i have selected species transport. In that taking pdf as the mixture i apply both homogeneous and heterogeneous reaction.

[DrAmine]

How are you modeling the heterogenous reactions? Which models are enabled in your case?

[sidharthasondh]

Discrete Phase Model is there that i have used. I am not aware of so many models. It would be a great help if you could guide me through in this. I am working on a simulation for Lignite coal gasification and i wish to calculate the concentration of products from the whole process.

[Rob]

DPM for a packed/fluidised bed isn't going to work: read the assumptions on that model. I think you'll need the Eulerian model, and may then need to review the chemistry.

[sidharthasondh]

Thanks rob. Are there tutorials on eulerian model.

[Rob]

I think so. Check in Help, otherwise there is one in the Learning Hub (you need to pay for that) on the Multiphase course.