[Gasification] back to gasification

Wed Jun 1 15:50:58 CDT 2011

Jan,
I am curious what method you selected for tar removal. Also, was the
methanation step expensive?  The methane would make a better engine fuel
than the H2 and CO but I am concerned about the cost.

Best Regards,

JAMES T. LEACH, P.E.
President

DANA TECHNOLOGIES, INC.
32242 Paseo Adelanto, Suite D
San Juan Capistrano, CA 92675
Ph 949-496-6516
Fx 949-496-8133
Mobile 949-933-6518

  _____  

From: gasification-bounces at lists.bioenergylists.org
[mailto:gasification-bounces at lists.bioenergylists.org] On Behalf Of Jan
Kopyscinski
Sent: Wednesday, June 01, 2011 1:13 PM
To: Discussion of biomass pyrolysis and gasification
Subject: Re: [Gasification] back to gasification

Hi Kevin,

I did my Phd thesis on this topic. You can find more information there:
http://e-collection.library.ethz.ch/view/eth:1059

or under www.bio-sng.com and www.biosng.com,
http://www.biofuelstp.eu/bio-sng.html and on other pages.

In  a nut shell the process consits of:
1) low temperature steam gasification
2) gas cleaning (ash, tar, H2S, ...)
3) methanation = conversion of the syngas into methan (catalytic process,
mostly Nickelcatalyst)
 CO + 3 H2 --> CH4 + H2O
 CO + H2O --> H2 + CO2

If you use a different catalyst you can go for higher hydrocarbon such as
Fischer Tropsch Diesel, or Methanol, ....

4) Fuel upgrading = removal of H2O, CO2

We at the Paul Scherrer Institute in Switzerland (http://tpe.web.psi.ch/)
investigated this process from wood to BioSNG in two scales for more than
1000h.

Regards

Jan

- 

Dr. sc. Jan Kopyscinski

Postdoctoral fellow

Department of Chemical and Petroleum Engineering

Schulich School of Engineering

University of Calgary

2500 University Drive NW

Calgary, Alberta, Canada  T2N 1N4

Email: jan.kopyscinski at ucalgary.ca

Phone: 001 403 2109575 

  _____  

Von: Kevin <kchisholm at ca.inter.net>
Gesendet: May 31, 2011 5:02:24 PM
An: "Discussion of biomass pyrolysis and gasification"
<gasification at lists.bioenergylists.org>
Betreff: Re: [Gasification] back to gasification

Dear Jan

Very interesting!!

What steam temperature and pressure is required to gasify wood?

Once one has such gas, what sort processing is required to convert it to
CH4? (That is, what temperatures, pressures, catalysts, etc)

Is there any way this can be done on a small scale?

Is there any way this process can be modified to produce methanol on a small
scale? If so, this would be awesome... it would then yield a very portable
liquid fuel.

Thanks!

Kevin

----- Original Message -----
From: Jan  <mailto:jan.kopy at web.de> Kopyscinski
To: Discussion of biomass  <mailto:gasification at lists.bioenergylists.org>
pyrolysis and gasification
Sent: Tuesday, May 31, 2011 11:30 AM
Subject: Re: [Gasification] back to gasification

Hi,

First of all, there are at least two different types of biofuel:
First Generation:  agricultural feedstock, which is converted by means of
biochemical processes (i.e., digestion) --> Biogas
Second Generation: woody biomass that is converted via thermochemical
converiosn into a producer or so-calles syngas (Gasification).
Thus, if your goal is to produce Methan or Natural Gas substite for a gas
engine or transportation fuel you have different options. But you need to
know what is your feedstock (dry , wet, digestable or not digestable such as
wood):
If you have a rather dry feedstock you can go for steam gasifiaction (no
air, means no Nitrogen). The produced syngas you can catalytilcally convert
to CH4, CO2 and H2O. Prior to the methanation process you need to remove the
sulphur since it is deactivating your catalyts. H2O and CO2 can then be
removed. This process has been investiaget by the Paul Scherrer Institiute
in Switzerland (www.psi.ch and www.bio-sng.com).
Removal of nitrogen is too expensive, thus you should avoid feeding it into
your process. 2 vol% to max 5vol% N2 in the methan rich gas is acceptable.

Regards,

Jan

  _____  

Von: "Pannirselvam P.V" <pannirbr at gmail.com>
Gesendet: May 31, 2011 12:46:54 PM
An: "Discussion of biomass pyrolysis and gasification"
<gasification at lists.bioenergylists.org>
Betreff: Re: [Gasification] back to gasification

Dear A.D Karve  

      One of the project we have been studying  is based on the
IGT,Instuite  Gas technology patented process  called Biotherm , in which
the  wood  gas or syngqs  can be passed into the biodigestor, in which  CO
and  Hydrogen can  be converted into  methane ; the  NOX .COX, SOX removed
via simple  known wet or  dry process using activated charcoal and  lime ;
the methane is then compressed.The N  can be removed  as ammonia,as this can
be very toxic to bio methane bacteria; Syngas obtained via pyrogas can
reduce this N2 problem and complexity.Thus pyrogas technology  has more
potential than  wood gas technology

  we are studying how to make this complex process into simple innovative
process to  make possible charcoal and  methane economy which is practiced
in the developed country  in big scale  can be  made possible in developing
village level technology too in small scale ,The project is yet in design
stage to reduce CO2 to use as liquid  fertilizer too increasing the
calorific valued the compressed biogas.

Yours truely
Pannirselvam

On Mon, May 30, 2011 at 11:01 PM, Anand Karve <adkarve at gmail.com> wrote:

Dear List,
We are already using, in India, wood gas made from agricultural waste
to run stationary internal combustion engines. But, for using it as
automobile fuel, it would have to be filled into cylinders, for which
the nitrogen in the wood gas would have to be removed in order to
reduce its bulk and to increase its calorfiic value. Does anybody have
a suggestion as to how this can be achieved?
Yours
A.D.Karve

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