This is a backpack flamethrower which I built. I built it for no other reason than that I felt I had not seen a good one of these built before, and I felt I could do it.
It utilizes kerosene pressurized by nitrogen. The pressure tanks and related hardware are mounted on an aluminum camping backpack frame. The “guns” are fabricated, welded aluminum. The trigger actuates a micro-switch which turns on high voltage igniters, and also simultaneously opens a small ball valve at the end of the gun with the use of cable control. The ball valve permits flow of pressurized kerosene past the high voltage arc, and voila! 20 foot streams of liquid fire.
It is excellent for setting things on fire. Much better than propane.