Stryder50
Platinum Member
This is a reasonable post. Clean coal is pretty much a hoax.
This is way down the road, but these latest breakthroughs prove it's possible.
"clean coal" is something the USA, and most of the West, have been working on for a few decades now. The following post from another thread, done earlier today gives more details. What is done with the flue/smoke after combustion is what determines the "clean";
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Here's the aspect of use of coal either unknown, not understood, or misrepresented by many involved in the energy vs. environment matrix.
1st : Doesn't matter which type of coal one burns, "clean coal" has most to do with how you treat the post combustion results. Major concern has been with the large amounts sulfur dioxide, SO2, coming out of the "smokestack"; which is the main cause of acid rain and other pollution's.
2nd : Responsible use of coal for power(electrical energy) involves how one deals with the combustion aftermath, the flue/'smoke' and Western nations have been involved in addressing this for nearly two centuries now. Blunt term is: "Flue-Gas DeSulfurization" ~ FGD.
Select excerpts;
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Flue-gas desulfurization (FGD) is a set of technologies used to remove sulfur dioxide (SO2) from exhaust flue gases of fossil-fuel power plants, and from the emissions of other sulfur oxide emitting processes such as waste incineration, petroleum refineries, cement and lime kilns.
Methods
Since stringent environmental regulations limiting SO2 emissions have been enacted in many countries, SO2 is being removed from flue gases by a variety of methods. Common methods used:- Wet scrubbing using a slurry of alkaline sorbent, usually limestone or lime, or seawater to scrub gases;
- Spray-dry scrubbing using similar sorbent slurries;
- Wet sulfuric acid process recovering sulfur in the form of commercial quality sulfuric acid;
- SNOX Flue gas desulfurization removes sulfur dioxide, nitrogen oxides and particulates from flue gases;
- Dry sorbent injection systems that introduce powdered hydrated lime (or other sorbent material) into exhaust ducts to eliminate SO2 and SO3 from process emissions.[1]
For a typical coal-fired power station, flue-gas desulfurization (FGD) may remove 90 per cent or more of the SO2 in the flue gases.[2]
History
Methods of removing sulfur dioxide from boiler and furnace exhaust gases have been studied for over 150 years. Early ideas for flue gas desulfurization were established in England around 1850.With the construction of large-scale power plants in England in the 1920s, the problems associated with large volumes of SO2 from a single site began to concern the public. The SO2 emissions problem did not receive much attention until 1929, when the House of Lords upheld the claim of a landowner against the Barton Electricity Works of the Manchester Corporation for damages to his land resulting from SO2 emissions. Shortly thereafter, a press campaign was launched against the erection of power plants within the confines of London. This outcry led to the imposition of SO2 controls on all such power plants.[3]
The first major FGD unit at a utility was installed in 1931 at Battersea Power Station, owned by London Power Company. In 1935, an FGD system similar to that installed at Battersea went into service at Swansea Power Station. The third major FGD system was installed in 1938 at Fulham Power Station. These three early large-scale FGD installations were suspended during World War II, because the characteristic white vapour plumes would have aided location by enemy aircraft.[4] ...
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![en.wikipedia.org en.wikipedia.org](https://upload.wikimedia.org/wikipedia/commons/a/a4/Air_pollution_by_industrial_chimneys.jpg)
Flue-gas desulfurization - Wikipedia
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The Problem/Challenge with other global coal burners like PRC-China and India is that they don't do the "EPA" thing and treat the combustion aftermath, the SO2 laden Flue, and 'Clean' the results of the coal burning they have done.
Most Western nations have "EPA" mandates of sorts where they clean up their toxins from coal burning/use via FGD systems.
Unfortunately, with a world that is round and where we all are downhill with regards to other's "pollution" and uphill in regards to our own "pollution"; having rogue polluter nations like China and India dumping sulfur dioxide and other contaminates into the shared atmosphere means the responsible nations are negatively impacted by the irresponsible nations.
Could such be considered enough global health hazard as to be a cause belie for War ???
BTW, in the photo above, that's steam - water vapor and CO2 coming out of the tall stacks.
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