Re: (erielack) Coal

[Des Norman <desanorman_@_yahoo.co.uk>]

Hi,
I only know about use in coal-fired power stations in the UK, but it's 
probably the same for the US.

Flue Gas Desulphurisation (FGD) removes a lot of the sulphur content 
from the combustion gases. One process involves spraying finely-crushed 
limestone and water through the hot gases. The main product is then 
gypsum - in large quantities.

Hope this helps.
Des Norman,
Scotland


Paul Brezicki wrote:
> Please indulge my stretching of list content rules here: a while back, we
> were discussing coal combustion (initially I think this was a DL&W steam
> loco thread). Can one of you knowledgable chemists confirm or correct my
> recollection that burning coal with limestone in a power plant produces
> gypsonite as a byproduct, which is then sold for gypsum board etc?
> 
> Paul B


		
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