How Does Lime Reduce Sulfur Dioxide Emissions from the Burning

question 99

Multiple Choice

How does lime reduce sulfur dioxide emissions from the burning of coal?

• A)It reacts with the sulfur dioxide to form calcium sulfite solid that can be precipitated.
• B)It reduces the sulfur dioxide to elemental sulfur that is harmless to the environment.
• C)It oxidizes the sulfur dioxide to tetrathionate that is highly water soluble so it can be scrubbed from the emission gases.
• D)It catalyzes the conversion of sulfur dioxide to sulfur trioxide which is much less volatile and can be removed by condensation.
• E)It converts SO₂ to solid, elemental sulfur.

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Definitions:

Metric Micrometer

A precision measuring instrument that uses a calibrated screw widely used for precise measurement of small distances in the metric system.

Thimble

A small metal or plastic cap with a grooved edge used to protect the finger while pushing a needle through fabric in sewing; or, a fitting used in rope systems to protect the loop from wear.

Torquing

The process of applying a specific amount of twist or force to fasteners, such as bolts and nuts, to ensure they are properly secured.

Clamping Force

The force applied to hold two or more objects together, preventing movement or separation.