Dear Robert
----- Original Message -----
From: Robert Taylor
To: Discussion of biomass cooking stoves
Sent: Wednesday, October 24, 2012 8:44 PM
Subject: Re: [Stoves] Extended use of TLUDs Re: [biochar]
UsedTractors...biochar on homestead
If the tank is ostensibly empty, why not just unscrew the valve, poke in the
end of a hose through the opening, and fill it up with water?
# That will get rid opf propane vapor. However,
1: It is a nuisance, to fill with water, and then dispose of it.
2: There may still be a oil film on the walls of the tank, that the water
flush does not remove.
Best wishes,
Kevin
Robert Taylor
----- Original Message -----
From: Kevin
To: Discussion of biomass cooking stoves
Sent: Thursday, October 25, 2012 7:04 AM
Subject: Re: [Stoves] Extended use of TLUDs Re: [biochar] Used
Tractors...biochar on homestead
Dear David
Good point!! To ensure that the tank is free of propane, simply duct tape a
piece of garden hose, or a pipe that will fit in the valve opening, to a hair
drier. Then turn on the fan for about an hour. No heat is necessary.
A secondary hazard may exist if there are hydrocarbon liquids inside the
tank. When the heat from a cutting torch or grinder contacts them, they can
also generate explosive gases. Heat the "area to be cut" without making
penetration, while leaving the fan running, and then complete the cut. This
should be safe.
Best wishes,
Kevin
----- Original Message -----
From: David G. LeVine
To: Discussion of biomass cooking stoves
Sent: Wednesday, October 24, 2012 7:10 PM
Subject: Re: [Stoves] Extended use of TLUDs Re: [biochar] Used Tractors
...biochar on homestead
On 10/23/2012 01:21 AM, Su Ba wrote:
I was just given some discarded propane tanks of various sizes. I plan
to have a friend, who is welder, cut them up and see what we can come up with
for a stove. My requirements for a stove is that it has to be easy for me to
use, cost not too much, and last longer than they do now.
...Su Ba
Warning: Propane tanks can explode or flare if cut without fully
emptying them. It is wise to open the valve for a week or two in hot, bright
sunlight, or fill the tank with non-flammable gasses (CO2, Argon, etc.) to
prevent such problems for the first cut. Remove the valves, if you can.
Dave 8{)
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