[Gasification] Producer gas. Dry cleaning.

Thu Jan 31 15:55:08 CST 2013

Greetings Oscar, and list.

Dolomite is "Dolomitic Lime" (Limestone) we have great pits here in
Manitoba, where it is mined. I have some samples of it from old experiments.

you are looking for thin slabs with the "veins" in them, if it's just white
rock, it's useless.

You can crush the veins into small rocks about the size of coffee beans
(remove the dust and fines from the crushing), and use this in a box that
is in the outlet flow.

The dolomite has to be HOT to do it's job. > 500° F

Greg

On Thu, Jan 31, 2013 at 7:34 AM, Oscar Jimenez <oscar at cubaenergia.cu> wrote:

> Dear All.
>
> Just recently I knew about the possibility of producer gas dry cleaning,
> using " dolomite " on commercial basis. As far as I know the dolomite acts
> as catalyst, getting the producer gas free of tar. The principle seems to
> be
> rather well known, at least, such effect was known long ago. However I
> would
> like to precise how commercial is it.
> Comments would be greatly appreciated.
>
> Thanking you in advance.
>
> Kindest regards.
>
> Oscar.
>
>
> -----Mensaje original-----
> De: Gasification [mailto:gasification-bounces at lists.bioenergylists.org] En
> nombre de jim mason
> Enviado el: Thursday, January 31, 2013 2:05 AM
> Para: Discussion of biomass pyrolysis and gasification
> Asunto: Re: [Gasification] Spanner
>
> i haven't seen one in person, but when we did the workshop in germany
> they were highly spoken of and considered one of the most
> accomplished.  the pictures have always looked impressive and the
> company seems with lots of history and talent.  the price point seems
> tolerable in germany, but a challenge for elsewhere.
>
> j
>
>
>
> On Wed, Jan 30, 2013 at 8:25 AM, Tom Miles <tmiles at trmiles.com> wrote:
> > Thanks Phil. I think that would be the first one in Canada unless
> Borealis
> > has a demo somewhere
> >
> > Regards,
> >
> > Tom
> >
> > -----Original Message-----
> > From: Gasification [mailto:gasification-bounces at lists.bioenergylists.org
> ]
> On
> > Behalf Of Phil Marsh
> > Sent: Wednesday, January 30, 2013 7:46 AM
> > To: 'Discussion of biomass pyrolysis and gasification'
> > Subject: Re: [Gasification] Spanner
> >
> > Tom:
> >
> > You might want to check with the BC Bioenergy Network (Michael Weedon). I
> > believe they have chosen the Spanner system for a small scale test at a
> > community in Northern BC.
> >
> > Phil Marsh
> > Marshbros.
> > 250 569-7858
> >
> > -----Original Message-----
> > From: Gasification [mailto:gasification-bounces at lists.bioenergylists.org
> ]
> On
> > Behalf Of Tom Miles
> > Sent: January-30-13 12:03 AM
> > To: 'Discussion of biomass pyrolysis and gasification'
> > Subject: Re: [Gasification] Spanner
> >
> > Fredrik,
> >
> > It's good to hear from you. And many thanks for the report on the
> Spanner.
> >
> > I have found some reports on the performance of the Spanner gasifiers. If
> > the it operates reliably then it might be worthwhile considering. It is
> > encouraging to hear that so many are in use. University of North Dakota
> > (EERC) developed a 100 kWe gasifier with a reactor that sounds very
> similar
> > in concept to the Spanner. It seemed to work well on wood. They built a
> > couple of them but the economics were not favorable so I do not think
> they
> > are being used.
> >
> > I have seen that the 30 kWe Spanner gasifier is about EUR 130,000 and the
> 40
> > kWe/100 kWth unit is about EUR 140,000 (USD 189,000). If you add another
> EUR
> > 70,000 (USD 95,000) for the feed system, heat distribution, and
> switchgear
> > then it is a fairly expensive heater and generator at about EUR 210,000
> (USD
> > 284,000).
> >
> > We have a similar situation in most of the US where the only real savings
> is
> > by not consuming from the grid. Even through there are public incentives
> for
> > small generators the utilities discourage small generation through high
> > connection costs and other high service fees.
> >
> > The economics are favorable in the remote villages in Alaska and British
> > Columbia. The Alaskan sawmill where we installed a 20 kWe  gasifier pays
> > about EUR 496/kWe (USD 670/MWh) for diesel generated power. We estimated
> > that we could generate power with the gasifier for about EUR 296/kWh (USD
> > 400/kWh). A consumer in a larger town pays about EUR 326/kWh (USD
> 440/kWh).
> > We estimated that we could generate 1 MWe power for about EUR 178 (USD
> > 240/kWh) with public subsidy for a small (2 MWe) steam system but
> gasifiers
> > at the 2 MWe scale were too expensive.
> >
> > All  the best,
> >
> > Tom
> >
> >
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>
>
> --
>
>
>
> Jim Mason
> Website: http://www.whatiamupto.com
> Current Projects:
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