Support studies for the U-GAS coal gasification process. Part II: Combustion characteristics

• Published in: Fuel processing technology Vol. 17; no. 3; pp. 209 - 219
• Main Authors: Goyal, Anil, Rehmat, Amir, Knowlton, Ted M., Leppin, Dennis, Waibel, Richard T., Patel, Jitendra G.
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 1988
• ISSN: 0378-3820; 1873-7188
• DOI: 10.1016/0378-3820(88)90036-7

This is the second part of a series of papers providing the details of support studies conducted as part of the development of the U-GAS fluidized-bed coal gasification process. (Part I: Fluidization; published in Fuel Processing Technology, Vol. 17(2) (1987) 169–186). The medium-Btu industrial fuel gas (IFG) produced in the gasifier, which consists mainly of CO, H 2, CO 2, and CH 4, was evaluated for its combustion characteristics in a sub-scale, spud-type boiler burner. The gas was evaluated for flame stability, furnace efficiency, flame temperatures, flame size, and pollutants created. In the event of planned or unscheduled gasifier downtime, a gas mixture consisting of 30% natural gas and 70% air has been proposed as a backup to the industrial fuel gas-produced in the U-GAS process. The proposed backup gas was tested according to the same criteria to determine its suitability as a temporary replacement fuel. The combustion characteristics of these gases were compared with the combustion characteristics of natural gas.