[Gasification] Gasification Digest, Vol 13, Issue 1

awesales tbone188 at gmail.com
Thu Sep 1 19:55:02 CDT 2011


Hi Mark
I built a cyclone for my gasifier it is made from a 5" truck exhaust pipe.
It's heavy enough to disapate heat and welds very well. I entered with a 2"
pipe and axhausted with a 2" pipe. The conventional wisdom is 2:1 ratio
inlet pipe to dia.of the cyl.I have tried this unit a couple of times and it
works well. I understand the "cone" bottom is not a great advantage. I have
a simple drawing of it if you want one.
tbone188 at gmail.com

On Thu, Sep 1, 2011 at 12:00 PM, <
gasification-request at lists.bioenergylists.org> wrote:

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>   1. Re: Charcoal Reduction Mill (Henri Naths)
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> ----------------------------------------------------------------------
>
> Message: 1
> Date: Thu, 1 Sep 2011 10:37:49 -0600
> From: Henri Naths <c_hnaths at telusplanet.net>
> To: "mark at ludlow.com" <mark at ludlow.com>,        Discussion of biomass
>        pyrolysis and gasification      <
> gasification at lists.bioenergylists.org>
> Subject: Re: [Gasification] Charcoal Reduction Mill
> Message-ID: <03DD01BD-834D-4259-A44E-5A037F4DFA3C at telusplanet.net>
> Content-Type: text/plain; charset="utf-8"
>
> Thanks Mark
> H
>
> Sent from my iPhone
>
> On Aug 27, 2011, at 2:12 PM, "Mark E. Ludlow" <mark at ludlow.com> wrote:
>
> > I?ll see what I can dig up. I did a project without a final baghouse and
> was amazed at how much the 1% loss of efficiency really amounted to! (it?s
> all super-fines). But getting the first 98-or-99% collected takes a huge
> load off the baghouse. A critical part of the cyclone is a long-ish
> downcomer that allow the material to accumulate and discharge with out
> disrupting the vortex dynamics. Learned by experience! Also, stacked
> Posiflate valves in lieu of a rotary airlock.
> >
> >
> >
> > Best, Mark
> >
> >
> >
> > From: Henri Naths [mailto:c_hnaths at telusplanet.net]
> > Sent: Saturday, August 27, 2011 7:05 AM
> > To: mark at ludlow.com; Discussion of biomass pyrolysis and gasification
> > Subject: Re: [Gasification] Charcoal Reduction Mill
> >
> >
> >
> > Then, a tall skinny, cyclone
> >
> >
> > Hi mark
> >
> > I was wondering if you or some one on the list has the math for the
> efficiency ratios for cyclones ie. Tall skinny vrs short fat cfm, volume?
> Particulates?
> >
> > Thanks
> >
> > Henri
> > Sent from my iPhone
> >
> >
> > On Aug 25, 2011, at 10:14 PM, "Mark E. Ludlow" <mark at ludlow.com> wrote:
> >
> > Then, a tall skinny, cyclone
> >
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