Our feedstock is
chipped and piled at a landfill. We would like to transport the chips
15 miles to a power plant where we will integrate a gasifier. The
majority of the chips may remain at the landfill, but we would like to store
a weeks worth supply of feedstock at the power plant. I realize that
putting the feedstock in a silo or closed building would be
disastrous. The main question is how to store the weeks supply, 1000
tons, at the plant...just pile them, three walled
building?
Any help is
appreciated
James
Fields
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James,
A silo would not
necessarily be disastrous, though it could have that potential. Moisture and
oxygen content is the critical factor.
A 3 sided building
may be the most economically feasable way to store it, but it does increase
the handling costs, unless you put in a feed system right from the storage
building. You will want to keep rain off of it. Rain water is highly
oxygenated.
The secret will be
to continually rotate the feedstock, so it doesn't have time to build up
heat, although if it's already in a pile at the landfill, it may have
finished it's initial heating. Fresh chips are more susceptable to
heating.
The heat is caused
by bacterial action in the presence of oxygen, with enough moisture present
to keep the 'bugs' happy.
http://keithwalkingfloor.com/page3.html
A walking floor
may be of interest to you. These can be retrofitted into a van trailer to
make it a self-unloader, and dump inside your building without 30 foot
ceilings. No need to dump in the yard, then carry it with a frontend loader
to the storage building.
They can
also be used to feed the stock out of your storage bin or bunker into a
conveyor on the backside.
An informal
recomendation would be to equip your trucks with a Keith walking Floor in a
45 foot van trailer. These should be able to haul 25 ton loads. 100 cubic
yards. You'll need 40 loads of storage space, or 4000 cubic
yards.
15 feet high(5
yards) would require 800 yards of floor space. An 80x100 building should
work. Large vents in the peak ot the roof and under the eaves will remove a
lot of moisture for you.
A round storage
bunker or silo would also be usable, but you won't get the surface area
exposure for natural drying.
A 40 foot round
structure would need to be piled 20 feet deep to store your reserve
supply.
http://www.laidig.com/brochure-98s.htm
If you decide to
go with a silo, you'll need to unload it.
LOL I don't get
any commission from either of these companies.
Have you done any
planning on the loading of the trucks at the landfill?
This should give
you a few things to consider.
Let me know if I'm
on the right track with your needs.
Motie
Maybe it's a
personal quirk, but can you CC to the Gas list? As long as I am making a
donation of my time, I would like it to benefit anyone else who may be
having problems too.
You may also get
additional replies from someone who has an entirely different perspective
from mine.
