I found this on a website somewhere - but forgot to copy the url. It is from Poland, I think. This set up is for capturing condensates from pyrolized wood. The condensates range from wood vinegar (pyroligneous acid) to bio-oil - an acid kind of crude oil. There is a lot of information I will post soon about using wood vinegar in farming. Here is what looks like a pretty simple method of making it:
This would be easy to do in a bottomless cone kiln. Just dig a hole under the kiln and set your two containers in the bottom of the kiln. Make sure the retort extends up into the cone kiln so it gets plenty of heat. I will be trying this soon and I'll let you know how it works.