Assessment of Possibilities for Operation of Ni-Catalyst Partial Oxidation Reformers in SOFC Systems after Soot Formation
The simple method of calculation of thermodynamically equilibrium composition of partial fuel oxidation products was used to calculate the degree of air consumption in a reformer which permits to avoid soot formation. The value ensuring auto thermal process in CPOX reformer was determined. Air flow rate used in reaction with synthesis gas and for cooling the reformer, was calculated also.
An experiment is carried out to simulate the abnormal operation of the CPOX reformer with further soot formation on the Ni-catalyst and its walls. The results show that even in the event of the abnormal operation and carbon deposition in it, the CPOX reformer can continue working. Specifically, the carbon gasification takes place. The CO-content of the synthesis gas in this case is twice as much, on the average; however, this is not of critical character for SOFC systems.