Ethyl Carbamate in Continuous Stripping Stills

[Yummyrum]

Larry posted this link in a recent topic about SS verses Copper Condensers
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https://distilling.com/distillermagazin ... perations/

I’ve always been aware that you need copper in the boiler or at least the Riser to catalyse the Hydrogen cyanide into Ethyl Carbamate so it ends up back in the boiler and doesn’t carry over .That is fine in a Batch striping still setup .

But this article highlighted that in a Continuous stripper ,the higher the beer feed is , the more EC is found in product .
Whats worse is if you use a SS stripper and feed the top of the column , there would be no copper at all to act as a catalyser . Having a copper heat exchanger makes it even worse still as this is the only copper n the still and it is on the descending side not the ascending one .

Further , the study mentioned that the main source of hydrogen cyanide in the beer comes from grains and in particular ,malts .

There have been a few SS stripping stills on here recently that are used with beer from grains .

This has got me a bit worried and I’m thinking should we be thinking about adding a big copper catalyser section above the beer feed to provide an attempt to remove as much EC as we can ?

I guess that batch distilling the low wines for the spirit run will assist but it is effectively the last chance for EC removal .