Erosion of SS pipe by shredded plastic
Erosion of SS pipe by shredded plastic
(OP)
Hi All,
We are adding an extra firing pipe to an existing burner to fire waste shredded plastic ranging in size 1-35 mm. A combustion guy told us that in order to to improve burning we can introduce tangential air to the pipe at choked conditions to "stir" the plastic chunks and help them to burn as they leave the pipe. My concern is: could those plastic pieces cause erosion to the SS310 pipe at such a high velocity? Is there a threshold Rockwell number below which erosion is not an issue? I know some plastic additives can be abrasive.
Thanks
We are adding an extra firing pipe to an existing burner to fire waste shredded plastic ranging in size 1-35 mm. A combustion guy told us that in order to to improve burning we can introduce tangential air to the pipe at choked conditions to "stir" the plastic chunks and help them to burn as they leave the pipe. My concern is: could those plastic pieces cause erosion to the SS310 pipe at such a high velocity? Is there a threshold Rockwell number below which erosion is not an issue? I know some plastic additives can be abrasive.
Thanks





RE: Erosion of SS pipe by shredded plastic
RE: Erosion of SS pipe by shredded plastic
RE: Erosion of SS pipe by shredded plastic
I suspect that my approach would be to evaluate a threshold erosion rate in mm/yr based on the conveyance of sand, and then change the materials properties to those representative of plastic, and then increase the solids concentration or mixture velocity or both until the same erosion rate resulted. That would then be my limiting criteria.