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#51500 - 03/31/14 02:55 PM Why we need coal
Bill Offline
Megastar

Registered: 12/31/10
Posts: 1858
Loc: Oklahoma, USA
Ok, that's not exactly what this is about, but it is part of it. The new Wired Magazine (22.04) has an extensive article about Carbon Capture and Storage (CCS). Basically the problem is that a large number of credible studies say that we won't be able to fully switch to renewable energy sources in this century. In the mean time we are stuck with coal and the use of coal is increasing rapidly. China in particular to fuel its economic growth and its attempt to get most Chinese out of poverty is using huge amounts of coal. So we need CCS to cut down on the CO2 that is being injected into the atmosphere.

Of course the generation of energy is not the only use of coal. Another major user is the steel industry. Steel production uses huge amounts of coal in the form of coke, and our use of steel is increasing rapidly. And that is a use that can't be replaced with renewable energy.

So we need CCS. The biggest problem seems to be that it is expensive. The equipment and processing is complicated and we don't really understand how to go about it. So far there are no large scale systems actually in use. So it is an emerging technology. Environmental groups are against it because they see it as 'greenwashing' the power companies. The power companies are against it because it is so expensive.

CCS is in development. China is working on a number of systems to help clean up their air, but they won't be coming on line in the immediate future. They do have some serious problems. In Tangshan, SE of Beijing when the author was there the visibility was a quarter of a mile (0.4 km). They plan to get it cleaned up in about 20 years.

In the meantime CCS is a huge problem which needs to be solved.

Bill Gill
_________________________
C is not the speed of light in a vacuum.
C is the universal speed limit.

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#51505 - 03/31/14 05:14 PM Re: Why we need coal [Re: Bill]
paul Offline
Megastar

Registered: 03/21/06
Posts: 4136
Quote:
Steel production uses huge amounts of coal in the form of coke, and our use of steel is increasing rapidly. And that is a use that can't be replaced with renewable energy.


will / wouldn't we need coal for steel production after the coal is depleted?

if we stop or reduce using coal for energy production , wouldn't our ability to produce steel in the future be better supported?

is there a replacement for coal in the production of steel?

is there a feasible ... ( feasible:DOE approved word for
well hidden stupidity that ensures that energy comes
at a cost to the consumers of energy so that the rich
can have the power to control every aspect of the lives
of those who have weaker finances ) ...method of energy production that can replace the use of coal for energy production?

is there a non feasible method of energy production that can
replace the use of coal for energy production?

plants thrive on CO2 , plants utilize CO2 to produce
oxygen for humans to breath , would the total amount of
oxygen produced by plants be reduced by capturing and storing CO2?

will the rich (feasibly) provide compressed air for humans
to breath at an affordable price when plants are no longer producing enough oxygen due to the proposed capture and storage of carbon (CCS).

will the rich buy up all of the captured carbon so that
they alone will have the ability to grow plants and
produce foods by releasing the CO2 from the purchased
stored carbon into their high CO2 concentrated farming installations
that are isolated from the resultant low CO2 concentrations found in the natural environment?


isn't CCS just another method of total dependence on the rich?


_________________________
3/4 inch of dust build up on the moon in 4.527 billion years,LOL and QM is fantasy science.

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