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 on the internet.
All companies in the coal industry have public relations departments, which promote environmentally safe practices and advances in technology to minimize pollution.
Also, there are non-profit organizations, such as the American Coalition of Clean Coal Electricity, funded by energy companies. The list of the companies that are members is provided on their website. (see related link)
If there is an increase in clean coal technology promotion (and I don't know if this is true), it may be due in part to the numerous efforts worldwide to curb carbon emissions based on climate change concerns.
From the perspective of a coal company, there is always concern that there will be more regulatory action, making it more expensive to generate electricity.
See related links.
Some disadvantages of clean coal is that it pollutes the air.
Coal that has become diamond.
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.
oxygen
Bruce G. Miller has written: 'Clean coal engineering technology' -- subject(s): Clean coal technologies, Environmental aspects, Coal-fired power plants, Coal-fired furnaces, Coal
clean coal is not renewable
Water vapor
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 pollutatants and generators of acid rain. In addition, most of the smokestack gases listed above are strong greenhouse gases and they trap head in the atmosphere. That contributes to climate change, thunderstorms, tornadoes, hurricanes, and the enlargement of deserts.
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 pollutatants and generators of acid rain. In addition, most of the smokestack gases listed above are strong greenhouse gases and they trap head in the atmosphere. That contributes to climate change, thunderstorms, tornadoes, hurricanes, and the enlargement of deserts.
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.
There is not any such thing !
A wall of coal that's being worked or being prepared to work is a coal wall face.