This is a short guide outlining what clean coal technology is, and in a general sense how it works.
Summary – What Is Clean Coal Technology?
- Clean coal technology involves any part of the coal-for-energy process that reduces emissions (usually carbon dioxide) and air pollution/contamination (usually sulphur dioxide, nitrogen dioxide, and particulate matter)
- There’s several ways clean coal technology can be implemented, and each works differently
What Is Clean Coal Technology?
The definition of clean coal has changed over time:
- It started out with washing coal at the mine, which removes some of the sulfur and other contaminants, and makes the coal cleaner and cheaper to transport (wikipedia.org)
- It then proceeded to CSS (carbon capture and storage technology), whereby the carbon dioxide generated at coal plants it captured and stored underground (usually in rock formations and aquifers)
- And most recently, it’s been used to describe coal plants with new designs that are more efficient and/or reduce pollution/emissions (such as Super critical coal power plants, Ultra super critical coal power plants, and other types of High efficiency low emission coal power plants)
The reality is though – ‘clean coal’ can be used as a term to describe any part of the coal-for-energy process (it could be a new design, device, method/technique, action, regulation, or something else) that reduces or eliminates emissions (usually CO2) or air pollution (usually sulphur dioxide, nitrogen dioxide, and particulate matter).
- The term ‘clean coal’ is increasingly being used for supercritical coal-fired plants without CCS, on the basis that CO2 emissions are less than for older plants, but are still much greater than for nuclear or renewables
For air pollution:
- [with clean coal technology, the] primary focus was on SO2 and NOx, the most important gases in causation of acid rain, and particulates which cause visible air pollution and have deleterious effects on human health
List Of Clean Coal Technologies & Techniques