If Ozone was a proposed method, which I'd really hesitate to use with aluminum,
how about warm or hot dilute hydrogen peroxide instead? And no, I've never
tried it. All my research has been with solids and a bit with hybrids.
Gerald
-----Original Message-----
From: Henry Spencer <hspencer@xxxxxxxxxxxxx>
Sent: Sep 15, 2016 11:42 PM
To: Arocket List <arocket@xxxxxxxxxxxxx>
Subject: [AR] Re: Removing coking deposits
On Thu, 15 Sep 2016, Robert Watzlavick wrote:
...a few of the holes seem slightly darker than others so I can only
assume that is due to coking from the fuel (kerosene). Does anyone have
suggestions on how to clean up the holes? I was thinking of chucking up
a wire brush in a drill and running it down in the holes but a solvent
would be preferable.
I don't think you're going to find a solvent that will simply dissolve
classical coking deposits -- my understanding is that they simply aren't
soluble in anything reasonable. (Remember, if they're there at all, that
means that hot fast-flowing kerosene couldn't dissolve them...)
Something that would *react* with them and not with the passage walls,
well, maybe, but I think it would take something pretty aggressive to
react with that stuff.
I'd guess you're going to end up doing mechanical removal.
Henry
