What is clean coal - or green coal?

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Burning of coal, a fossil fuel is one of the principal causes of climate change and global warming.

"Clean coal" or "Green coal" is a theory that we can capture all the pollutants including sulphur dioxide and carbon dioxide from coal as it is burnt and store them, instead of releasing them as greenhouse gases.

The carbon dioxide will then be pumped underground into vacant spaces where oil and natural gas used to be. This will be known as "carbon sequestration".

Countries that rely on coal for their economies and electricity generation (Australia, for one) are hoping that clean coal will let them continue using and exporting "clean" coal without the carbon pollution attached.

Unfortunately there are no examples of successful coal "cleaning" so far.

Many environmentalists believe that the term clean coal is misleading: "There is no such thing as 'clean coal' and there never will be. It's an oxymoron" (Sierra Club director, Dan Becker).

Complaints are:
  • Coal mining has a high environmental impact
  • Carbon Sequestration costs will be extremely high
  • There is no sure science on how to capture or store the pollutants.
A: Clean coal is essentially a lie made up by politicians to fool voters into believing the government is acting on the energy crisis. In the real coal industry, "clean coal" has been implemented in 6% of coal-power stations, and is now no longer being used in any stations. The chemistry behind clean coal produces highly toxic chemicals as a by-product, and hence cannot be used to fix the energy crisis. It certainly isn't good for the environment.

As an example of the difficulties involved, Australia's coal-fired power stations produce 260 trillion liters of carbon dioxide every day (260,000,000,000 liters). The energy required to compress and sequester this would use massive amounts of the power generated by the "cleaned" coal.
Clean coal is a term for technology (Clean coal technology) that mitigates emissions of carbon dioxide (CO2) and other greenhouse gasses that arise from the burning of coal for electrical power. It reduces the harmful emissions caused by the burning of fossil fuels.
  • coal that is burned with technology that cuts the amount of soot and sulfur dioxide emitted
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How do you get coal?

Coal is obtained by strip mining which removes all soil above a coal deposit. The soil is replaced but it takes many years for the ecosystem to recover and there are four ranks of coal which are: . lignite . sub-bituminous . bituminous . anthracite

How do you mine coal?

Coal is mined by two methods: surface or 'opencast' mining or underground or 'deep' mining. The choice of mining method largely depends on the geology of thecoal deposit. Underground mining currently accounts for a biggershare of world coal production than opencast; although in severalimportant co (MORE)

What is the origin of coal?

Coal originated from ancient plants that flourished in swamp-like environments millions of years ago. In Virginia, coal was formed mainly during the Carboniferous period of the Earth's history, 280 to 360 million years ago. There are also coalbeds in Virginia that were formed during the Triassic p (MORE)

How does coal burn?

Coal is a combustible solid. When it is heated to a high enough temperature, it combines with oxygen in the air. giving off heat and waste gasses.

How is coal refined?

Coal refining is nowhere near as complex as oil refining. Coal is washed with a water or chemical bath to remove some impurities. As much as 30 percent of the sulfur can be removed by washing. At the power plant, coal is pulverized to a heavy powder just before being burned. From http://www.ucsusa (MORE)

Who invented coal?

No one invented coal it was discovered. It is dead animals/trees who have been under alot of pressure for millions of years and formed coal

What does coal produce?

Coal produces a lot of things like energys lights and fuel, some even runs EVERYTHING in your house!

What substance is coal?

Coal is a mineral, and it's mostly carbon with a good bit of hydrogen and oxygen plus a small portion of some other elements. A link to the Wikipedia article on coal is provided.

What are the advantages and the disadvantages of using clean coal technology?

Clean coal is coal that does not release carbon dioxide into the atmosphere. Coal was made from the deposited layers of forests and organic matter that have held the carbon under the earth over millions of years. We are now digging it up and burning it. This releases all that carbon dioxide which (MORE)

Where do you get coal?

Scientists believe that during the Carboniferous period (280 to 345 million years ago) large amounts of plant life and other organic matter grew in the swampy areas and lagoons that covered much of the earth. As the plants and other life forms died, they drifted down to the bottom of the swamps, slo (MORE)

Where do you get coal from?

Coal is a fossil fuel formed in ecosystems where plant remains were preserved by water and mud from oxidization and biodegradation , and which its chemical and physical properties have been changed as a result of geological action over time, thus sequestering atmospheric carbon. Coal is (MORE)

What is coals?

From Webster's Dictionary: A black, or brownish black, solid, combustible substance, dug from beds or veins in the earth to be used for fuel, and consisting, like charcoal, mainly of carbon, but more compact, and often affording, when heated, a large amount of volatile matter.

Do coal companies have the technology to make clean coal?

No, fossil fuel companies do not have the technology to make fossil fuels clean. Fossil fuels come from, as the name suggests, dead plants and animals with millions of tons of pressure on their decomposing bodies for hundreds of millions of years, therefore there is so much carbon built up in them (MORE)

Where is Clean Coal used?

There is no such thing as "clean coal". People who talk about it, such as in TV commercials, are just trying to fool you with a lot of nonsense. Burning coal always produces carbon dioxide, sulfur dioxide, nitrogen dioxide, sulfur trioxide, and carbon monoxide, and those are all dangerous polluta (MORE)

Why do coal companies refuse to clean up their coal?

Please note that because this is a controversial issue, I've included three related links. Much more information can be found on the internet, the media and the literature (books still exists!).. Both government and the purchasers of coal (power companies) acknowledge that more must be done to prev (MORE)

Is coal safe?

Coal mining is a dangerous job in the coal mines, as you see by the devastating explosion just recently. Coal also produces many harmful gases into our atmosphere, so renewable resources are safer for people, animals, the earth, and everything!

Is Coal homogeneous?

Coal is only as homogeneous as the original materials from which it is formed. Many soft coals (lignites) are formed by the burial and compression etc, of forest or shrubland. Thus the coal formed from this will never be homogeneous, and you may find fossilized branches in the material. Many 'b (MORE)

Why is clean coal now being promoted in commercials?

I do not know as a fact that clean coal is being promoted more now, than before. I have no inside industry information on this subject. I've included a number of links on the "clean coal technology", with the first two links, spoofing the clean coal ads. So the clean coal ads have had a backlash (MORE)

Is coal porus?

Yes. Coal has porosity, and according to the link, it can range from 0.1% to 10%. An important area of research is the study of the pore system of coal, which can be intersected by fissures. These fissures can help transport and produce coal bed methane (CBM). See related link.

Why coal burn in coal stock?

cause that's what It does, coal naturally burns in one fuel sourceso that's what makes it up to be burning in a coal stock, once thecoal is burned it creates heat energy which is naturally anonrenewable resource once it is actually burned.

Why is coal a compound?

It isn't - it is a mixture of compounds. There are 100s of chemical compounds that have been extracted from coal. It is a mixture of these

Does coal have DNA?

No. Coal is dead matter, the outcome of long periods of high pressure and temperature following death and decay of living organisms (normally plant matter). The organisms had DNA when they were alive, but the molecules have long since decomposed and converted to other chemicals and structures.

What is coal produced for?

Coal is not produced it is mined (it is a natural resource/product). Coal is used (burned) as a source of enery and coal products (given off when coal is heated) are used in the chemical industry.

Does Mars have coal?

It is extremely unlikely. Coal is derived from the carbon inorganic matter, mostly plant material, that is buried deepunderground. So far we have found no direct evidence that Mars eversupported life. If it did, that life was probably not present inlarge enough amounts to leave behind coal deposits. (MORE)

What are clean coal technologies designed to do?

Clean coal technologies are designed to stop the emissions of Carbon Dioxide into the atmosphere. CO 2 is captured and stored safely away for millions of years. Governments are sinking a lot of money into this technology, as if it can be made to work, they will be able to keep on burning coal wi (MORE)

How is coal created and where does coal it come from?

coal is created by the deposition and compaction of huge plant(organic) material deposited into a basin,with the increasing depth the high rank of coal is formed. The order is:- peat>lignite>bituminous>anthracite Peat is formed at shallow depth and on moving downward anthracite is formed at greater (MORE)

Is clean coal good?

There is no such thing as "clean coal". People who talk about it, such as in TV commercials, are just trying to fool you with a lot of nonsense. Burning coal always produces carbon dioxide, sulfur dioxide, nitrogen dioxide, sulfur trioxide, and carbon monoxide, and those are all dangerous pollutata (MORE)

Does coal burn clean?

THERE IS NO SUCH THING AS CLEAN COAL, and people who say that there is are just trying to fool you. Burning coal always releases carbon dioxide, nitrogen oxides, sulfur oxides, and other dangerous and noxious pollutatnts.

What do you do with coal?

I do nothing with coal. Others burn it to release the contained energy through the process of combustion. The result of combustion is heat. The heat is then most often used to create steam. The steam is then used to spin a turbine, which creates electricity. So, in a nut shell, coal is electricity. (MORE)

How did coal become coal?

coal become coal because when animals get buried in swamps years ago and when it is dug up now it became coal that is correct p;ants a long time ago are coal

Is clean coal a political issue?

Yes, it is a weapon of economic/environmental warfare, used by the wealthy upon the powerless, who are nonetheless, addicted to the electricity which the burning of coal provides. The phrase "clean coal" is an oxymoron, as it is an economical and ecological impossibility, for coal to be burned, cle (MORE)

What are the effects of clean coal on the environment?

Dirty coal releases particulates into the upper atmosphere which in the short term tend to reduce the rate of global warming. The long term build up of CO2, however, has an inevitable effect. Burning clean coal releases the CO2 without the "benefit" of the particulate. Although laws passed in the (MORE)

How has coal contributed to the green house effect?

All hydrocarbon based fuels add to the "green house effect" by emitting CO2, carbon dioxide. This carbon dioxide causes the Earth's atmosphere to refract sunlight in such a way that it actually warms the planet a little more.

How does clean coal reduce the emission so2?

"Clean coal" primarily from the Powder River Basin, is low in sulfur content compared to other coal sources, and therefor produces less SO2 when combusted. " Clean Coal Technologies" use chemical methods of "scrubbing" SO2 from exiting flue gasses before they can be released to the environment. O (MORE)

How does clean coal benefit the environment?

'Clean coal' is a hope that one day we will be able to trap and safely dispose of the carbon dioxide emissions from burning coal. So far this has not been done successfully or economically. Many people think it will never happen.

What is coal and what is the essential element of coal?

Coal is a fossil fuel created from the compaction of the earth on fossil vegetation from millions of years ago. It's primary constituents are carbon, sulfur, hydrogen (partly as moisture), nitrogen, oxygen and ash. Carbon is the most prominent constituent.

How can clean coal technology be done?

-crushing the coal into small chunks and washing out the sulfur dioxide. -burn the coal, reducing the NOx. this is called 'staged combustion'. -using a 'fluidized bed boiler', realising the sulfur dioxide, then the limestone captures the sulfur and changes it into calcium sulfate. hope this helps. (MORE)

How important is it to use clean coal technology?

It is very important to use clean coal technology. The pollutants from burning coal causes health problems as well as environmental problems. The clean coal technology cuts back on these pollutants and provides a cheap form of energy.