[Gasification] coal gasification, where did the hydrogen come from?

[LINVENT at aol.com]

Coal gasification usually is with steam to make it more efficient and the 
reaction C+H2O->CO+H2 is used, and as you correctly point out, it is steam 
gasification. 
Tom Taylor
In a message dated 2/9/12 10:59:42 PM, emtaz2010 at gmail.com writes:


> Dear list
> I must write a brief explanation about biomass and coal gasification. I am 
> confused when I must explain hydrogen production from gasification. I can 
> understand quite well about biomass gasification, because biomass contains 
> H in their chains. But I still have no idea when many authors wrote about 
> producing Hydrogen from coal.
> 
> AFAIK coal is mainly carbon, but many wrote this reaction, concerning 
> oxygen gasification
> 
> C + O2 --> CO2
> C + 1/2 O2 --> CO
> H + 1/2 O2 --> H2O
> 
> my question is where does the hydrogen in that reaction come from if it is 
> not a steam gasification?
> Or it should be a steam gasification ?
> 
> Thank you,
> Tasliman
> 
> 
> 
> 
> 
> 
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