YungPlantEng
Chemical
- Jan 19, 2022
- 94
This is a goofy way to state the question but I’m getting one of our hastelalloy C276 nozzles analyzed for corrosion mechanisms, validation of material, and to hopefully get some directions on ways to limit the component mtbf.
The service is 2000 F SO2 into a quenching unit. The theoretical chemistry our refractory company has is that sulphuric acid forms and attacks the nozzle when eddy currents push it back up into the nozzle. There are also thoughts that carryover sulfur quickly removes the oxidation layer preventing any meaningful component lifetime. Since this is a high temp, high flow, sulphuric service I can’t for the life of me find any materials outside of maybe C-22 that might be comparable. We’d be willing to spend 3-4x the cost of the nozzle on a custom solution if there is one.
The issue is that as this nozzle abrades the refractory is directly attacked leading to a 4 month nozzle replacement and rebuild period. Curse the engineer who made this degenerate process but has anyone had experience with finding a big brother to c276?
The service is 2000 F SO2 into a quenching unit. The theoretical chemistry our refractory company has is that sulphuric acid forms and attacks the nozzle when eddy currents push it back up into the nozzle. There are also thoughts that carryover sulfur quickly removes the oxidation layer preventing any meaningful component lifetime. Since this is a high temp, high flow, sulphuric service I can’t for the life of me find any materials outside of maybe C-22 that might be comparable. We’d be willing to spend 3-4x the cost of the nozzle on a custom solution if there is one.
The issue is that as this nozzle abrades the refractory is directly attacked leading to a 4 month nozzle replacement and rebuild period. Curse the engineer who made this degenerate process but has anyone had experience with finding a big brother to c276?
