Hi Tom and All,
Good info but too long. Mine has both hi temp, cat, the Ni/FE in the
SS tubing and scrubbies and O2 from reforming H2-O2 from the steam from the
biomass.
I prefer destructive distillation instead of producer gas as it's more
energy dense and one doesn't have to get rid of the excess N2, just have to
crack or burn the tars made.
To the list of possible cats alumina, silica sand, TiO from a paint
store, limestone can also be used in a fuildized bed cracker and possibly car
cats.
I see no reason not to use the tars as fuel by cracking them into
syngas instead of wasting them, their energy and having to dispose of a lot of
toxic byproduct.
Now do you, anyone else here have any info on how to put syngas back
into usable HC products like methane, butane, propane, higher/lower gasolines
as that is what we really need, clean biofuels from woody biomass? That is the
discussion we need to have.
Jerry Dycus
--- On Mon, 9/6/10, Tom Miles <[email protected]> wrote:
> From: Tom Miles <[email protected]>
> Subject: Re: [Gasification] tube reactor for gas-to-liquids tests?
> To: "'Discussion of biomass pyrolysis and gasification'"
> <[email protected]>
> Date: Monday, September 6, 2010, 11:27 AM
> Jerry,
>
> We had a discussion and documentation on this list a year
> ago about tar
> cracking. Heat only will not do it. You need some partial
> oxidation or a
> ctalyast. See, for example, "Formation, Decomposition and
> Cracking of
> Biomass Tars in Gasification" DTU 2005
> http://gasifiers.bioenergylists.org/gasdoc/tars/pyrotar2.pdf
>
>
> Tom
>
> -----Original Message-----
> From: [email protected]
> [mailto:[email protected]]
> On Behalf Of jerry freedomev
> Sent: Monday, September 06, 2010 6:38 AM
> To: Discussion of biomass pyrolysis and gasification
> Subject: Re: [Gasification] tube reactor for gas-to-liquids
> tests?
>
>
> Hi Jeff and All,
>
> Yes
> as I've been saying for yrs now here, cracking tars into
> H2-CO should be a no brainer. I'd suggest
> running them through a long SS
> coiled tube on the burning chamber sides as an example
> heated to 1500f with
> pulled apart SS dish scrubbies inside which should crack
> about anything into
> syn gas thus cleaning it up, increasing quality and
> reducing fouling.
>
> The heat
> can be recycled into the gasification section input
> air or biomass destructively distilling it. Many steel,
> other plants use
> these methods to get carbon/coke from biomass or coal and
> power their
> operations.
>
> Some
> use the tars to make water gas, making coke/charcoal then
> hitting the hot charcoal with hot steam, making
> syngas/H2-CO.
>
>
> Another could be a fluidized bed reactor
> using nickel/SS
> turnings, bits, etc.
>
> Many ways
> to skin that cat. My old Mark's Manual, an old
> engineers manual that can be found used, shows
> multiple ways to get syngas
> which use to be used as a fuel gas for towns, etc.
>
>
> Jerry Dycus
>
>
> --- On Mon, 9/6/10, Jeff Davis <[email protected]>
> wrote:
>
> > From: Jeff Davis <[email protected]>
> > Subject: Re: [Gasification] tube reactor for
> gas-to-liquids tests?
> > To: "Discussion of biomass pyrolysis and
> gasification"
> <[email protected]>
> > Date: Monday, September 6, 2010, 12:32 AM
> > Tar cracker?
> >
> >
> > Jeff
> >
> >
> > On Sun, 2010-09-05 at 13:00 -0700, jerry freedomev
> wrote:
> > > Nickel, Platinum, etc tend to break down
> HC's
> > into H2, CO with
> > > correct temps, pressures.
> >
> >
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>
>
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