[Gasification] Sawdust in Fan TLUD
Rolf Uhle
energiesnaturals at gmx.de
Sat Jun 4 17:16:15 CDT 2011
Art,
this sounds very close to what I want to do and I cannot find it done!
I want to make pellets without having to pelletize.
After my very good experience with almond shells ( m/l 30 x 20 mm) passing
readily through 3 and 3.5 " (75 and 90 mm) spiral augers and around bends,
I want to stamp wood chips on a rotating cilindrical die into " coins" of
some 15 -20 mm diam.
I imagine some kind of hollow cylinder with holes and a matching, synchronized
cylinder with short hardened steel punches stamping the chips thru those holes
.
The stamped chips fall out of the hollow die and what has not been stamped
runs around for another chance...
Why does this machine not exist ?
Rolf
Am Samstag, 4. Juni 2011 21:19:26 schrieb Art Krenzel:
> Pete,
>
> Have you looked into gear compression pelletizer? Several years ago at the
> Port of the Tri Cities in Oregon, I saw a sawdust pelletizer made of two
> large gear wheels (about 18 inches in diameter) which were heavily spring
> loaded together and driven by a highly geared down electric motor. I
> believe only one gear wheel was driven with the other acting as an idler.
> They acted as a "nip roller" in the real world. They formed a semi solid
> pellet about two inches long and about 5/8 inch in diameter.
>
> Sawdust was augured to a hopper above where the gear wheels meshed and self
> fed into the gears. The gear faces measured approximately two inches
> wide.
>
> The pellets were not of the same high density as the extruder pelletizers
> make but if your purpose is only to use the straw on site, this might work
> for you. They were handling the pellets with a bucket loader and auger.
> Some of the pellets broke down in handling but the bulk of them remained
> in good shape.
>
> It was simple, quiet and did not have a very large electric motor driving
> it.
>
> Art Krenzel
>
> > -----Original Message-----
> > From: gasification-bounces at lists.bioenergylists.org
> > [mailto:gasification-bounces at lists.bioenergylists.org] On Behalf Of Pete
> > & Sheri
> > Sent: Friday, June 03, 2011 9:01 AM
> > To: 'Discussion of biomass pyrolysis and gasification'; 'Thomas Reed'
> > Cc: 'Hugh McLaughlin'
> > Subject: Re: [Gasification] Sawdust in Fan TLUD
> >
> > Could one possibly semi-pelletize the sawdust directly at the input to
> > the gasifier? I see pellet makers that use a screw extrusion method. If
> > one could get enough compaction to loosely hold the particles together,
> > right at the input point, then there wouldn't be the "spouting" discussed
> > previously. There also wouldn't be all that pressurized air to deal with.
> > The compacted material would also create a "seal" between the gasifier
> > and the outside world, if needed.
> >
> > Pete Stanaitis
> > --------------
> >
> >
> >
> >
> >
> > _______________________________________________
> > Gasification mailing list
> >
> > to Send a Message to the list, use the email address
> > Gasification at bioenergylists.org
> >
> > to UNSUBSCRIBE or Change your List Settings use the web page
> > http://lists.bioenergylists.org/mailman/listinfo/gasification_lists.bioen
> >erg ylists.org
> >
> > for more Gasifiers, News and Information see our web site:
> > http://gasifiers.bioenergylists.org/
> >
> >
> >
> > _______________________________________________
> > Gasification mailing list
> >
> > to Send a Message to the list, use the email address
> > Gasification at bioenergylists.org
> >
> > to UNSUBSCRIBE or Change your List Settings use the web page
> > http://lists.bioenergylists.org/mailman/listinfo/gasification_lists.bioen
> >ergylists.org
> >
> > for more Gasifiers, News and Information see our web site:
> > http://gasifiers.bioenergylists.org/
>
More information about the Gasification
mailing list