Acrolein is a co-/by-product of incomplete combustion of glycerol. One
would think that at ~2,000* F (the "Wood Gun") the combustion process
would be complete.
Todd Swearingen
R Del Bueno wrote:
Any concerns to possible toxic emissions...as with the concern of some
SVOers?
I have heard that some nasty toxins are produced by the burning of
crude glycerin..although I have no data on it.
Perhaps it is temperature (of combustion) related..and hence not an
issue with a gasifier?
At 10:13 PM 6/4/2005, you wrote:
Bill,
One would imagine that a gasifier would reduce all components of the
glyc cocktail to syn gas and char.
Gasification is a novel thought to reducing that waste/co-product to
nill though. No addition of anything. No chemical refining. No new
energy inputs. No disposal problem with the remaining crude glycerol.
A standard ratio/mix of biomass to cocktail might be just the ticket.
Here is a gasifier that we've been eying for a couple of years now.
http://www.alternateheatingsystems.com/woodboilers.htm
It's the only one we've seen that might fit the ticket.
Todd Swearingen
Bill Clark wrote:
Hi to all,
Yesterday I visited a small wood veneer operation using a wood
gasification unit to produce steam which heats the veneer driers.
They had previously been using LPG as a fuel source. The increase in
the price of LPG was threatening to put them out of business. With
the help of a grant from the State of Alabama they installed the new
biomass gasification unit and paid it off ($500,000.00 USD) in a
year and a half.
There is another industry here struggling with LPG prices. Chicken
growers. These small rural farmers must heat their chicken houses
during cool or cold weather. Each house is 60 ft. wide by 200 ft.
long. They turn the houses over 6 times per year. Each time a flock
is sold, a layer of litter (peanut hulls and chicken waste) must be
removed from the floor of the house. While the litter poduced is
being used on some farmland (a problem in itself), there is a large
glut of chicken litter piled around most of these farms. It is
smelly, full of avian pathogens and is a serious leachate problem.
There is work being done to utilize this waste as a heat source for
these houses. The Alabama Department of Economic and Community
Affairs Science, Technology and Energy division (ADECA-STE) is very
interested in biomass as energy and has a grant program aimed at
agricultural energy efficiency.
Questions:
Can raw glycerine co-product from a biodiesel operation be effective
as a source of syngas in a gasifier?
What implications from the soap content?
Proposal:
Since the removal of the litter from each house is a very dusty
operation, utilize raw glycerine co-product as a dust settler on the
surface of the litter with the added benefit of increasing the
energy content of the biomass. Use the waste biomass as fuel in a
wood gasification unit to produce heat for the chicken houses.
As some of you know, I am running a wvo to biodiesel project for the
City of Eufaula, AL. I produce about 600 gal. of biodiesel per week
leaving me with approximately 90 gal. of raw glycerine co-product.
While this is not enough to treat the 400 chicken houses in the
area, it may be enough to demonstrate this idea on one or two farms.
If the addition of raw glycerine to chicken litter is workable,
perhaps it could create a reliable use for raw glycerine produced in
a larger scale biodiesel plant. The raw glycerine could be sold for
perhaps $.50-1.00 per gallon, a nice price that would have an impact
on the feasibility of a local biodiesel operation.
I am just begining to think this through so any comments, positive
or negative, would be appreciated.
Hoping all is well with each of you,
Bill Clark
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