Optimal performance of methanol-nitrogen blend for heat treatment of steels

Čížkovský Juda - AIR PRODUCTS spol. s r.o. (Czech Republic)

As the methanol-nitrogen blend is a well-known alternative for ENDO generated gas for several decades, there are still many things to consider in nowadays usage. Providing the blend for the process is way easier to prepare and to control compared ENDO gas, but if the usage is improper, the results would be still suboptimal. There are explained the mechanism and the results of methanol cracking in non-ideal conditions. If methanol cracks in a low temperature, a much more soot is produced, and also higher amount of undesired products like water and carbon dioxide. That means problems with furnace purity and bigger consumption of natural gas (or propane) to maintain the set carbon potential. The presentation shows a direct comparison from a heat treatment shop of the Smart Lance with previously used simple methanol introducing into the furnace. Parameters like gas composition, carbon potential stabilizing duration were recorded to compare.

Back to Posts