Apparatus and methods for tar removal from syngas

A process for producing hot syngas comprising:

• treating a carbonaceous material with a molecular oxygen containing gas and optionally with one or more of steam and carbon dioxide in a gasification zone to produce a tar containing syngas;
• passing said tar containing syngas and a molecular oxygen containing gas through a first reaction zone to produce a gas mixture, wherein a linear velocity of a flow of said tar containing syngas oxygen mixture at an exit of said first reaction zone is greater than about 5 meters per second;
• and
• passing said gas mixture through a heat treatment zone maintained at a temperature of about 900° C. to about 2000° C. for a contact time of about 0.5 to about 5 seconds range wherein at least a portion of the tar undergoes one or more of partial oxidation and cracking to produce a hot syngas;
• wherein the gas mixture from first reaction zone changes direction of flow by impingement on a surface,
• wherein a ratio of linear velocity (meters/second) to height (meters) of the heat treatment zone is about 0.3:12.5 to about 2.0:2.5.

A process for reducing content of tar in a tar containing syngas comprising:

• contacting said tar containing syngas with a molecular oxygen containing gas in a first reaction zone to produce a gas mixture, wherein a linear velocity of a flow of said tar containing syngas oxygen mixture at an exit of said first reaction zone is greater than about 5 meters per second;
• and
• passing said gas mixture through a heat treatment zone at a temperature and for a time effective for reducing tar content of the syngas by at least about 10%;
• wherein the gas mixture from the first reaction zone changes direction of flow by impingement on a surface,
• wherein a ratio of linear velocity (meters/second) to height (meters) of the heat treatment zone is about 0.3:12.5 to about 2.0:2.5.

A process for reducing content of tar in a tar containing syngas, said process comprising:

• contacting said tar containing syngas with a molecular oxygen containing gas in a first reaction zone to produce a gas mixture, wherein a linear velocity of a flow of said tar containing syngas oxygen mixture at an exit of said first reaction zone is greater than about 5 meters per second;
• and
• passing said gas mixture through a heat treatment zone maintained at a temperature (T) between about 900° C. to about 2000° C. for a contact time (Ct) of about 0.5 to about 5 seconds wherein at least a portion of the tar undergoes at least partial oxidation and/or cracking to produce a hot syngas;
• wherein the tar concentration equivalent content of the hot syngas is maintained at less than 10 ppm,
• wherein a ratio of linear velocity (meters/second) to height (meters) of the heat treatment zone is about 0.3:12.5 to about 2.0:2.5.