Coal gasification

Coal gasification
  The process of converting coal into gas. The basic process involves crushing coal to a powder, which is then heated in the presence of steam and oxygen to produce a gas. The gas is then refined to reduce sulfur and other impurities. The gas can be used as a fuel or processed further and concentrated into chemical or liquid fuel.
  U.S. Dept. of Energy, Energy Information Administration's Energy Glossary

Energy terms . 2014.

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