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#306898 - 06/03/18 11:50 PM Allam Cycle - Zero Emissions Nat Gas Power Plant
Jeffery J. Haas Offline


Pooh-Bah

Registered: 08/03/04
Posts: 13502
Loc: Whittier, California
That natural gas power plant with no carbon emissions or air pollution? It works.

Quote:
As a final bonus, the only water used is a bit for cooling. The plant can switch to air cooling for a small (2.5 percent) efficiency penalty and thus become a net water producer. That matters in an era when water threatens to be the Achilles' heel of US thermal power plants.
_________________________
"The Left ones think I'm Right, the Right ones think I'm wrong."
Leon Russell - Magic Mirror"
https://www.youtube.com/watch?v=L-H1iQ5Y6Eg

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#306905 - 06/04/18 08:23 PM Re: Allam Cycle - Zero Emissions Nat Gas Power Plant [Re: Jeffery J. Haas]
pondering_it_all Offline
veteran

Registered: 02/27/06
Posts: 8158
Loc: North San Diego County
It still produces one molecule of CO2 for every molecule of methane that goes in, two molecules for every molecule of ethane, etc. That CO2 has to go someplace. Hopefully not just out the back of the plant and dumped into the atmosphere.

I would be MUCH more impressed by a plant that strips the hydrogen off of natural gas, burned it to make water, and output solid blocks of carbon that could be buried as reverse coal mining. It is theoretically possible because the H-C bond has an energy of 411 kj/mole and the H-O bond has an energy of 459 kj/mole. That means you net 48 kj/mole you process (and get pure water to boot).

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