4 replies to this topic

[daraj]

Hi,

when we read steam:carbon ratios in articles often it is not mentioned how itis calculated? I believe it is basedon moles of water divided by moles of carbon atoms in the NG feed. but is the co2 present in NG feed also counted in the calculations?

 

what is the heat transfer efficiency of the reformer? i.e if my reformer needs 100MW for the endothermic reactions, what should be my energy input from fuel? should itbe 110 or 120 or..? what is the efficiency we assume here? iam assuming there will be some radiation and other losses. current sttae of the art reformers

offer how much efficiency?

 

 

[Said Salim]

Reformer Reaction duty is around 45% of total heat input delievered to burners.
You can take 220 MW as heat input.

[daraj]

Hi Said, out of 220MW, how much can be typically recovered as useful heat? i.e what is the overall energy efficiency of the SMR unit? (assume it is top fired or maybe side fired)

[Said Salim]

As an overall you can consider 93% thermal efficiency

[daraj]

Said, when iam simulatingthe fuel side of the reformer, stoichiometrically how much excess oxygen(in air) do you consider for burning the fuel in top fired reformers?