Syngas, or synthesis gas, is a combustible gas mixture that is derived from solid fuel by applying gasification technology at high temperature and elevated pressure. It is a mixture of hydrogen and carbon monoxide, in various ratios, and often contains some carbon dioxide and methane. The chemical composition of syngas varies based on the raw materials and the processes used to produce it. Syngas is principally used for producing ammonia or methanol, and it can also be used as a fuel. Historically, it has been used as a replacement for gasoline when gasoline supply has been limited. Syngas is produced by steam reforming or partial oxidation of natural gas or liquid hydrocarbons, or coal gasification. Syngas from pyrolysis is a combustible gas and can be used for the production of power in many types of equipment, from steam cycles through gas engines and turbines.

Some key points about syngas are:

• Composition: Syngas is a mixture of hydrogen and carbon monoxide, in various ratios, and often contains some carbon dioxide and methane.
• Production: Syngas is produced by steam reforming or partial oxidation of natural gas or liquid hydrocarbons, or coal gasification.
• Uses: Syngas is principally used for producing ammonia or methanol, and it can also be used as a fuel. Syngas from pyrolysis is a combustible gas and can be used for the production of power in many types of equipment, from steam cycles through gas engines and turbines.
• Challenges: The composition of syngas is highly dependent upon the inputs to the gasifier, and some components of syngas, such as tars, hydrogen levels, and moisture, can cause challenges that must be addressed.