TASK 2: Gas reforming

The main problem in the steam reforming of hydrocarbon-laden gasification gas is the formation of soot, coke and other carbon compounds in the steam reformer reactor (Figure 1). Depending on the process conditions, like pressure and temperature, different forms of coke may appear, some of which are more hazardous to the process than others. To ensure trouble free operation of the reformer, it is essential to control the soot formation in all process conditions including process shut-downs, start-ups and disturbances.

The coking phenomenon has been studied earlier at VTT when a few preliminary tests were carried out with a pressurised thermobalance, and currently a set of coking experiments are done with the pressurised fixed bed reactor for a Master's thesis. These results will direct the course of the research in this project.