Dear Listers,
The flare photo that I saw had a slight yellowish/orangeish tint to it
that is typically the tar aerosols burning. When a typical clean gas burns, it
is virtually invisible in the day and blue at night. This may be different if
there is a high methane or other C2+ hydrocarbons in it such as from tires that
is yellow if not mixed well with combustion air.
In operations on the Thermogenics' gasification system, even with 59%
moisture content in acid hydrolysis produced char from a cellulosic chemical
plant, there was a need to inject water to maintain temperature from going too
high. A result was higher carbon conversion and higher hydrogen in the produced
gas, one of the claims that is stated.
From the series of vertical pipes in the gas stream prior to the flare,
these are presumably traps or filters and as such will require periodic
cleaning to sustain operations. This represents downtime and labor and, to our
standard, not acceptable.
The clear condensate is of interest and more information would be
useful, but having any condensate at the flare is of concern as this condensate
may contain organics that introduce acids into the engine and shorten it's
lifetime. Also, certain large organic molecules may condense on the engine
intake valves and cause serious operating problems.
Thermogenics' gasification system operates on wood, tires, plastics
paper and other derivatives of a MSW/RDF stream and has been constructed to
overcome many of the problems seen with other systems using simple, but
effective methods. Videos of prior operating systems are on our website and
additional videos are going to b posted, but with the novel design, from the
feeder, reactor, gas cooling, cleaning not much can be shown and the same
protection of proprietary property as Bionear has undertaken.
Sincerely,
Leland T. "Tom" Taylor
Thermogenics Inc.
-----Original Message-----
From: Fredrik Ek <[email protected]>
To: Discussion of biomass pyrolysis and gasification
<[email protected]>
Cc: Gasification <[email protected]>
Sent: Thu, Dec 12, 2013 10:32 pm
Subject: Re: [Gasification] HKG BIONEAR http://www.youtube.com
/watch?v=ZKbYDF9Hp0o&feature=player_embedded
Hi Tom and list,
The Bionear gasifier is very interesting, but it is difficult to get a
grip on it. The man in the video is the inventor himself, Timo Heimonen. I
have met him several times and also seen several of his systems in
operation during the last few years.
The gasifier in the video is located in Lestijärvi, Finland where it
primarily serves a district heating system. The turbine has earlier served
as a diesel powered emergency power station at bank of Finland and has been
modified for use on producer gas.
On the same site in Lestijärvi where Turos teams unit now is operating,
another gasification plant was in operation for a few years. This previous
gasifier had earlier been located in Tervola in Finnish Lapland and then
modified for service in Lestijärvi. The operation in Tervola was
unsuccessful. In Lestijärvi the plant was in operation, but there were
problems with gas quality. The rapeseed oil press and the drying facility,
were already on the site when Turos Team came into picture. The gasifier in
the video is the first of Turos teams units that is running as a real
installation, not “at home” for them.
I visited the plant in Lestijärvi two days ago. At that time the turbine
was not in operation due to too little heat load at the time (+4 C). The
district heating system was in operation and run on producer gas. The unit
is over dimensioned for the site and a portion of the produced gas also was
flared. Based on the color of the flare, the gas seemed to be of real good
quality. Not entirely soot free, but with a flame looking like when clean
tar free wood gas burns in a flare. Previously I have had the opportunity
to see flares and also smell dripping condensate from another of Turos
teams smaller units. The concensate was like spring water.
For heat sold to customers in a district heating system in Finland, one
can typically take a price of about 70-80 €/MWh. For electric power
delivered to the grid, one gets the Nordpool FI price minus a margin. This
price varies, but it usually is within the range of 30-50 €/MWh. At the
moment it is about 35 €. This means that it mostly is clearly more
interesting to produce heat than power.
In the entire building in Lestijärvi, there was no smell of tar or smoke,
and the process seemed to run very smoothly. Time by time one could hear
small amounts of wood chips being fed to the gasifier. As is mentioned in
the video, there is no access to the interiors of the gasifier except the
two 2” plugs on the side. In the gas piping there is a small trap for
flyash, but it this is not really designed for removing much anything.
The gasifier was fed with wood chips with a humidity of about 30 % and
according to the inventor additional water was added at a rate of 10 l/h.
The statements of how much fuel was measured to be consumed per produced
MWh were not believable, 200 litres of wood chips/MWh. This is about one
fourth to one fifth of the amount that should be needed. Mr. Heimonen was
very aware of this himself too. I have been dealing with gasification for
many years and seen and heard unbelievable statements before too. When
something is too good for being true, it tends to show up that it also is
not. Water did not burn in Reisijärvi either despite earlier statements
made by another company… This unit in Lestijärvi is the most impossible
unit I have seen so far, but it seems to work. I can not believe the
efficiency statements and the presented values, but I can see that the unit
produces a clean gas and that the process seems to run very smoothly.
Measurements made by VTT (Technical research centre of Finland) on one of
the earlier units also showed impossible values. The construction of the
gasifier is a well kept secret. No patents or other documents on this are
available.
I keep my thumbs for Turos team and Mr. Heimonen! Gasification suffers
from too many failures, success stories are needed! The laws of nature are
hard to break, but also if the values are not true, a well functioning
system is worth a lot.
Fredrik Ek
[email protected]
+358407547182
On Wed, 11 Dec 2013 17:06:45 -0800, "Tom Miles" <[email protected]>
wrote:
> I liked that as well. Do we have any idea what “gasification” scheme
they
> are using? They say they have a gasifier and that they are making high
> hydrogen but they carefully avoided showing any useful pictures of the
> reactor. We see a lot of gauges and pipe fittings in these videos.
>
>
>
> Tom
>
>
>
> From: Gasification
[mailto:[email protected]]
> On
> Behalf Of Thomas Koch
> Sent: Wednesday, December 11, 2013 4:25 PM
> To: Discussion of biomass pyrolysis and gasification;
> [email protected]
> Subject: Re: [Gasification] HKG BIONEAR
> http://www.youtube.com/watch?v=ZKbYDF9Hp0o&feature=player_embedded
>
>
>
> I love the last 10 seconds of the video
>
>
>
> This plant is not designed to be repaired – it is designed to run
> smoothly.
>
>
>
> Best regards
>
>
>
> Thomas Koch
>
>
>
>
>
>
>
>
>
>
>
> Fra: Gasification [mailto:[email protected]]
> På
> vegne af kari käräjäoja
> Sendt: 11. december 2013 21:00
> Til: [email protected]
> Emne: [Gasification] HKG BIONEAR
http://www.youtube.com/watch?v=ZKbYDF9Hp0o
> <http://www.youtube.com/watch?v=ZKbYDF9Hp0o&feature=player_embedded>
> &feature=player_embedded
>
>
>
> http://www.youtube.com/watch?v=ZKbYDF9Hp0o
> <http://www.youtube.com/watch?v=ZKbYDF9Hp0o&feature=player_embedded>
> &feature=player_embedded
>
>
>
> VISITED TODAY THIS 4,2 MW ENERGY station.
>
> VERY IMPRESSIVE!
>
> Made in Finland. PROUDLY1 SEE WHY...
--
Fredrik Ek
[email protected]
+358407547182
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