Date: 2017-06-07 02:47 pm (UTC)
danieldwilliam: (Default)
From: [personal profile] danieldwilliam
Coal is a many-splendored thing.

I'd forgotten about the coking coal for the steel industry.

Still, it's going to be a significantly diminished coal industry in ten years' time even allowing for lots of steel usage in China and Africa and India.

I'm surprised by the Swiss carbon capture plant.

I wonder if there is a business in the future using waste heat from steel plants to drive CO2 capture to turn the CO2 in to high density carbon to go in the steel plant as a feedstock.

Date: 2017-06-08 11:16 am (UTC)
danieldwilliam: (Default)
From: [personal profile] danieldwilliam
My expectation is that they are benefiting from some form of subsidy for the technology and capital costs and getting the benefit of cheap waste heat.

In a future where non-dispachable renewables make up a large part of the electricity supply I think this is the sort of thing you might use to take up surplus power for grid balancing with a useful product.

I'm not sure what you do to sequester the carbon. I saw some suggesting just dumping blocks of pure carbon covered in concrete in subduction zones on the sea floor and thus inserting the carbon in to the lithosphere. I wonder if you could use it to make construction diamond and if so, would replacing all our built infrastructure over 200 year with diamond instead of concrete and steel. I don't know how much the built environment weighs if built of diamond.

Date: 2017-06-09 04:01 pm (UTC)
danieldwilliam: (Default)
From: [personal profile] danieldwilliam
Once you have the CO2 out of the atmosphere you can turn it in to carbon if you throw enough energy at it.

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