Comments on: (IGCC) Integrated Gasification Combined Cycle for Carbon Capture & Storage http://www.claverton-energy.com/integrated-gasification-combined-cycle-for-carbon-capture-storage.html Elite Energy, Environment & Tranporation Experts Thu, 11 Mar 2010 11:17:46 +0000 http://wordpress.org/?v=2.8.6 hourly 1 By: Nick C http://www.claverton-energy.com/integrated-gasification-combined-cycle-for-carbon-capture-storage.html/comment-page-1#comment-930 Nick C Mon, 29 Jun 2009 14:59:34 +0000 http://www.claverton-energy.com/?p=548#comment-930 What about DCFCs (Direct Carbon Fuel Cells) technology? Why? ? Turns carbon (coal, bio-char) directly in to electricity at 80%+ efficiency demonstrated (100% theoretical, same principle as H2 fuelcell but more efficient) ? Waste product is pure CO2 – 100% CO2 capture possible ? Hi Temperature operation so some of 20% waste heat can be used to produce steam to drive steam turbine, increasing efficiency further. ? Plant capital costs predicted to be significantly lower than conventional coal fired plants, even without CCS! ? Fast response – can be used for base and peak load. Why not? ? Still in research stage – commercial 5-10 years off HOWEVER by the time CC is sorted out DCFC could be in use and at far higher efficiency and lower cost. ? Politics & vested interests? Note on piped H2. Volumetric energy density of H2 is very low so piping H2 over long distances will incur significant pumping energy losses compared to the energy transported. What about DCFCs (Direct Carbon Fuel Cells) technology?
Why?
? Turns carbon (coal, bio-char) directly in to electricity at 80%+ efficiency demonstrated (100% theoretical, same principle as H2 fuelcell but more efficient)
? Waste product is pure CO2 – 100% CO2 capture possible
? Hi Temperature operation so some of 20% waste heat can be used to produce steam to drive steam turbine, increasing efficiency further.
? Plant capital costs predicted to be significantly lower than conventional coal fired plants, even without CCS!
? Fast response – can be used for base and peak load.

Why not?
? Still in research stage – commercial 5-10 years off
HOWEVER by the time CC is sorted out DCFC could be in use and at far higher efficiency and lower cost.
? Politics & vested interests?

Note on piped H2.
Volumetric energy density of H2 is very low so piping H2 over long distances will incur significant pumping energy losses compared to the energy transported.

]]> By: Tony http://www.claverton-energy.com/integrated-gasification-combined-cycle-for-carbon-capture-storage.html/comment-page-1#comment-915 Tony Thu, 11 Jun 2009 02:28:38 +0000 http://www.claverton-energy.com/?p=548#comment-915 Gasification is new to me,but now I see it everywhere. Thanks for explaining it clearly Gasification is new to me,but now I see it everywhere. Thanks for explaining it clearly

]]> By: bde http://www.claverton-energy.com/integrated-gasification-combined-cycle-for-carbon-capture-storage.html/comment-page-1#comment-855 bde Thu, 23 Apr 2009 08:33:54 +0000 http://www.claverton-energy.com/?p=548#comment-855 Hi, Very lucky to read your articles, would you kindly tell me any difference with coal-gas and syngas coming from petro-refinery source? Email me for any discovery now B.De. Hi,
Very lucky to read your articles,
would you kindly tell me any difference with coal-gas and syngas coming from petro-refinery source?
Email me for any discovery now
B.De.

]]> By: Hugh Sharman http://www.claverton-energy.com/integrated-gasification-combined-cycle-for-carbon-capture-storage.html/comment-page-1#comment-111 Hugh Sharman Sun, 11 Jan 2009 14:53:09 +0000 http://www.claverton-energy.com/?p=548#comment-111 Most of Fred's slides have gone! What a pity Most of Fred’s slides have gone! What a pity

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