Brass Steam Nozzle

[Pulpboy]

I want to know your opinions on a steam nozzle. The operations portion of the mill (Pulpmill) I work at want to use a brass "off the shelf" nozzle for steam. It is used to shatter the smelt (black liquor) from the recovery boiler to the dissolving tank. The pressure is 1175 kPa steam at a rate of 544kg/h.

We currently use a mild steel welded nozzle with a coating to protect against corrosion currently and they only last 3 months. I want to cast a CB-7CU-1 A631 SS nozzle with an Inconel 625 pipe.

Do you think the brass can hold up against the erosion? Apparently it's being used in a different mill already with favourable results. It just seems strange to me.

The nozzles they want to use are called 3/4" VeeJet at

http://www.spray.com

 

[etch]

It all depends on the environment in which it is going to be used. I would imagine it would either be acidic or alkali (hedging my bets there). I would say that the brass would be okay, but ensure to choose a high enough grade. NES747 (naval brass). Another option would be Aluminium Bronze.