Partial oxidation

from Wikipedia, the free encyclopedia

In the case of partial oxidation , a sub-stoichiometric fuel-air mixture is partially burned in a reformer and a hydrogen-rich synthesis gas is produced , which can, for example, be used in the fuel cell .

A distinction is made between thermal partial oxidation (TPOX) and catalytic partial oxidation (CPOX). With TPOX, these reactions take place at 1200 ° C and more , depending on the air ratio . With CPOX, the required temperature is 800 to 900 ° C thanks to the use of a catalytic medium. Which technology is used for reforming depends on the sulfur content of the fuel used. If the sulfur content is below 50 ppm , CPOX can be used. A higher proportion of sulfur would poison the catalyst too much, which is why the TPOX process is used for these fuels.

literature

  • Lutz Hartmann: Investigations into cold flames in the substoichiometry for the realization of a fuel cell reformer for liquid fuels . Shaker, Aachen 2001, ISBN 3-8322-1065-2 , ( Reports from Combustion Technology 15), (At the same time: Aachen, Techn. Hochsch., Diss., 2002).
  • L. Hartmann, K. Lucka, H. Koehne: Mixture preparation by cool flames for diesel-reforming technologies . In: Journal of Power Sources Vol. 118, No. 1, May 25, 2003, pp. 286-297, doi : 10.1016 / S0378-7753 (03) 00100-9 .