Technology now available allows reliable electricity to be generated with just one-third of the coal burned in "High Efficiency, Low Emission" (HELE) coal-fired power plants.
If each bag and balloon represents the energy in 20 million tonnes of coal, and Australia burns 60 million tonnes of coal / yr to produce electricity at present...— Askgerbil Now (@Askgerbil) October 5, 2018
That electricity could be generated with just 20 million tonnes of coal combined with hydrogen to produce methane. pic.twitter.com/hxVuBCD75M
The World Coal Association had called for investment in development of technology for cleaner coal in 2015. Now that technology is available, the World Coal Association has slammed a moratorium on its use.By 2030 utilities would have to cut 2/3 of the coal they burn now to hold global warming to 1.5 degrees Celsius. The cut is more than twice as steep as the boldest scenario outlined by the International Energy Agency. https://t.co/UyDjjfYl9p— Janae Steville (@StevilleJanae) October 1, 2018
In 2015 the @WorldCoal Association called for investment in "cleaner coal" technology. https://t.co/j0XjHV0cCP— Askgerbil Now (@Askgerbil) October 3, 2018
Now the new technology is available, @WorldCoal has imposed an anti-development moratorium on it. #Innovation stalled for clean coal
The Luddites over at @WorldCoal are still hiding from innovation that raises efficiency of coal-derived electricity energy generation. They want higher prices, not improved efficiency @chriskkenny #KennyOnSunday https://t.co/KK92EDxY4E— Askgerbil Now (@Askgerbil) September 17, 2018
The natural gas industry also opposes innovations to reduce energy bills and avoid the need for ever more costly drilling and fracking.
Ever done a financial analysis on producing methane from hydrogen and carbon?— Askgerbil Now (@Askgerbil) September 13, 2018
Brown coal about 50 cents / GJ, hydrogen from renewable energy at times when supply outstrips demand. https://t.co/1AQTpOkwhS
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| Beyond HELE - thermal power generation technology |
When methane is used to fuel an Ultrahigh Temperature Gas Turbine Combined Cycle power station, carbon dioxide emissions are 310 grams per kilowatt-hour.
The amount of carbon needed for each kilowatt-hour from any power station can be calculated if the carbon dioxide intensity is known. Each 44 grams of carbon dioxide contain 12 grams of carbon. The other 32 grams are oxygen.
The Ultrahigh Temperature Gas Turbine Combined Cycle power station needs methane made with 310 x (12 / 44) grams of carbon for each kilowatt-hour of electricity. That is 85 grams of carbon for each kilowatt-hour.
Some other power station technologies need a lot more carbon for each kilowatt-hour of electricity generated.
When coal is used to fuel a high-efficiency low-emission "HELE" ultra-supercritical coal-fired power station, carbon dioxide emissions are 900 grams per kilowatt-hour. The amount of carbon in the coal needed for each kilowatt-hour of electricity generated is 900 x (12 / 44) grams. That is 245 grams of carbon for each kilowatt-hour.
Some other common materials contain carbon that can be used to produce methane.
Each 28 grams of waste polyethylene plastic (C2H4)n contain 24 grams of carbon and 4 grams of hydrogen.
Each kilogram of wheat straw with about 7% moisture content is made of 48% cellulose by weight (of which carbon is 44%) and 25% is lignin by weight (of which carbon is 65%) ... (((1000 x (48 / 100) x (44 / 100)) + (1000 x (25 / 100) x (65 / 100))). That is 374 grams of carbon in each kilogram.
Choosing whether to burn 245 grams of carbon in coal or just 85 grams of carbon in methane to produce each kilowatt-hour of electricity seems to have only one obvious answer.
The World Coal Association simply refuses to answer this question.
Representatives of the gas industry also refuse to answer this question.
So-called "intermittent" renewable energy can be used in two or more ways to make synthetic methane from any material (straw, waste plastic, coal, etc) containing carbon.
One way is to use renewable energy when supply exceeds demand to power a plasma gasifier.
Another way is to use renewable energy to produce hydrogen by electrolysis of water - and combine that hydrogen with carbon from one or more sources.
As well as industry refusing to answer simple questions about innovation, the Australian Government tries to sell gas exploration rights to the gas industry even though this old method of obtaining natural gas - which is mostly methane - is no longer needed.
Minister Canavan @mattjcan announcing 2018 Offshore Petroleum Exploration Acreage Release at @APPEACONFERENCE in #Adelaide. For more information on the 21 areas open for bidding at https://t.co/H4lWkS1n3m #APPEA2018 #EnergySecurity #Investment pic.twitter.com/zPX9wtTR8i— Dept of Industry: Resources (@ResourcesGovAu) May 15, 2018
The Western Australian Government is also reviewing this obsolete method of obtaining methane in considering whether to sell "fracking" rights over large swathes of Western Australia.
Climate experts crowd WA Parliament to call for fracking ban https://t.co/nsPL3fzr1x via @watoday— Emma Young (@Emma_J_Young) September 18, 2018
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