The Coal Quiz

The greenhouse effect is a natural process where certain gases in the atmosphere trap heat from the sun, similar to how a greenhouse traps heat to help plants grow.

Clean coal technologies are methods and technologies developed to reduce the environmental impact of burning coal, such as coal washing, flue gas desulfurization systems, low-NOx burners, gasification, and carbon capture and storage.

Flue gas is the gas that is emitted from the smokestacks of coal burning plants and can contain impurities such as sulfur and nitrogen.

<p>Coal washing is a coal preparation process that removes impurities from coal by crushing it into small chunks and washing it, causing the coal to float to the surface while impurities sink.</p> Signup and view all the answers

<p>Flue gas desulfurization is a system that removes sulfur dioxide from flue gas. It works by spraying the flue gas with limestone and water, causing the sulfur and limestone to combine and form a paste that can be removed.</p> Signup and view all the answers