Dear Tom, thanks a lot for information on lignin. I can cerrtainly use it in my lectures and popular articles. Yours Nandu
On Wed, Apr 13, 2011 at 10:31 AM, thomas reed <[email protected]> wrote: > Dear Ron and all > > A few comments on Ron's questions. > > Woody biomass is typically 15-25% lignin and the balance is cellulose > and hemicellulose. In cellulose all the carbons are attached to -OH > or =O and so come off during pyrolysis as CO or CO2. > > Lignin has a benzene ring and is a hydrocarbon polymer based on > coniferyl or other alcohols monomers. As such iti is not easily > digested by microorganisms, and fallen trees in the forest rot leaving > "lignin logs". They fall apart when you kick them because the > longitudinal cellulose fibers are gone. Lignin's the precursor for > charcoal and dictates the ~20% yield of charcoal from most trees. > (Mesquite has 64% lignin and yields 30-40% charcoal.) > > Lignin was the precursor of all the coal in the world. It evolved > about 360 million years ago and made possible the enormous vascular > trees that became fossilized as coal. > > Some charring processes yield more than 20%, but typically contain > recondensed tars reabsorbed during manufacture. > > It is unfortunate that we don't have more analyses on the chemical > composition of tars from each process. > > Tom Reed, Pyrologist > > On Monday, April 11, 2011, Ron Larson <[email protected]> wrote: >> List: >> >> To Tom's list, I'd like to add >> >> 8. What is the range (especially the upper limit) of weight percent char >> that is possible with each device? (It seems pretty high with the GEK) >> >> Ron >> >> Sent from my iPad >> >> On Apr 11, 2011, at 1:00 PM, [email protected] >> wrote: >> >>> Send Gasification mailing list submissions to >>> [email protected] >>> >>> To subscribe or unsubscribe via the World Wide Web, visit >>> >>> http://lists.bioenergylists.org/mailman/listinfo/gasification_lists.bioenergylists.org >>> >>> or, via email, send a message with subject or body 'help' to >>> [email protected] >>> >>> You can reach the person managing the list at >>> [email protected] >>> >>> When replying, please edit your Subject line so it is more specific >>> than "Re: Contents of Gasification digest..." >>> >>> >>> Today's Topics: >>> >>> 1. Re: under 1MWe biomass CHP (Tom Miles) >>> >>> >>> ---------------------------------------------------------------------- >>> >>> Message: 1 >>> Date: Mon, 11 Apr 2011 08:31:27 -0700 >>> From: "Tom Miles" <[email protected]> >>> To: "'Discussion of biomass pyrolysis and gasification'" >>> <[email protected]>, <[email protected]> >>> Subject: Re: [Gasification] under 1MWe biomass CHP >>> Message-ID: <004d01cbf85d$87f57ad0$97e07070$@com> >>> Content-Type: text/plain; charset="iso-8859-2" >>> >>> Gero, >>> >>> >>> >>> Questions for you and other gasifier suppliers: >>> >>> >>> >>> 1. What is the current population of your operating gasifiers? >>> >>> 2. Specifically, where are they? >>> >>> 3. What fuels do they use? >>> >>> 4. What is their peak operating capacity? (kWe/kWhth) >>> >>> 5. At what capacity are they typically operated? (KWe/KWhth) >>> >>> 6. What is their typical capacity factor (operating hours per year at full >>> load equivalent(kWe)/8760 hours) >>> >>> 7. What new projects are in the pipeline? Or, where is the industry headed? >>> More small scale? Mini-grid? Higher capacity? >>> >>> >>> >>> Thanks, >>> >>> >>> >>> Tom >>> >>> >>> >>> T R Miles Technical Consultants, Inc. >>> >>> Portland, OR USA >>> >>> [email protected] >>> >>> www.trmiles.com >>> >>> www.gasifiers.bioenergylists.org >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> From: [email protected] >>> [mailto:[email protected]] On Behalf Of Gero >>> Eckermann >>> Sent: Sunday, April 10, 2011 10:36 PM >>> To: 'Discussion of biomass pyrolysis and gasification'; >>> [email protected] >>> Subject: Re: [Gasification] under 1MWe biomass CHP >>> >>> >>> >>> Hi Tom, >>> >>> >>> >>> I have also been corresponding with Pawel regarding our System Johansson >>> Gasproducers. >>> >>> Herewith an update for you: Attached is the self-explanatory accolade for >>> 2010 from Frost & Sullivan, UK. >>> >>> >>> >>> Kind regards, >>> >>> Gero >>> >>> CARBO CONSULT & ENGINEERING (Pty) LTD >>> >>> >>> >>> >>> >>> _____ >>> >>> From: Thomas Reed [mailto:[email protected]] >>> Sent: 09 April 2011 10:25 PM >>> To: Discussion of biomass pyrolysis and gasification >>> Subject: Re: [Gasification] under 1MWe biomass CHP >>> >>> >>> >>> Pawel >>> >>> Community Power makes a CHP 100 kW unit, see www.gocpc.com. >>> >>> All Power Labs, Jim Mason, (Berkeley) makes a 10 kW power supply. The heat >>> would be easy to add. >>> >>> TOM REED >>> >>> 2011/4/4 Pawe? Paszkiewicz <[email protected]> >>> >>> Hello, >>> To all members that could help. >>> What's the most proven under 1MWe biomass CHP plant provider in your >>> opinion? >>> Please share your experience on efficiency/costs/sustainability. >>> >>> All best from a newbie. >>> Pawel >>> >>> Pawe? Paszkiewicz >>> Doradca Klienta Korporacyjnego >>> >>> tel.: +48 728 214 186 <tel:%2B48%20728%20214%20186> >>> www.openenergy.com.pl <http://www.openenergy.com.pl/> >>> >>> >>> ul. Niemierzy?ska 17a, 71-441 Szczecin >>> tel.: +48 (91) 852 20 01 <tel:%2B48%20%2891%29%20852%2020%2001> , fax: +48 >>> (91) 852 20 03 <tel:%2B48%20%2891%29%20852%2020%2003> >>> NIP: 851-313-52-35, Regon: 320926340, KRS: 0000370255 >>> >>> >>> >>> >>> >>> -------------- next part -------------- >>> An HTML attachment was scrubbed... >>> URL: >>> <http://lists.bioenergylists.org/pipermail/gasification_lists.bioenergylists.org/attachments/20110411/d32239e0/attachment-0001.html> >>> -------------- next part -------------- >>> A non-text attachment was scrubbed... >>> Name: image001.gif >>> Type: image/gif >>> Size: 824 bytes >>> Desc: not available >>> URL: >>> <http://lists.bioenergylists.org/pipermail/gasification_lists.bioenergylists.org/attachments/20110411/d32239e0/attachment-0001.gif> >>> >>> ------------------------------ >>> >>> _______________________________________________ >>> Gasification mailing list >>> >>> to Send a Message to the list, use the email address >>> [email protected] >>> >>> to UNSUBSCRIBE or Change your List Settings use the web page >>> http://lists.bioenergylists.org/mailman/listinfo/gasification_lists.bioenergylists.org >>> >>> for more Gasifiers, News and Information see our web site: >>> http://gasifiers.bioenergylists.org/ >>> >>> >>> >>> End of Gasification Digest, Vol 8, Issue 6 >>> ****************************************** >> >> _______________________________________________ >> Gasification mailing list >> >> to Send a Message to the list, use the email address >> [email protected] >> >> to UNSUBSCRIBE or Change your List Settings use the web page >> http://lists.bioenergylists.org/mailman/listinfo/gasification_lists.bioenergylists.org >> >> for more Gasifiers, News and Information see our web site: >> http://gasifiers.bioenergylists.org/ >> > > -- > NOTE: PLEASE CHANGE MY ADDRESS TO [email protected] > > Dr. Thomas B. Reed > The Biomass Energy Foundation > BEF, BEC, BER > > _______________________________________________ > Gasification mailing list > > to Send a Message to the list, use the email address > [email protected] > > to UNSUBSCRIBE or Change your List Settings use the web page > http://lists.bioenergylists.org/mailman/listinfo/gasification_lists.bioenergylists.org > > for more Gasifiers, News and Information see our web site: > http://gasifiers.bioenergylists.org/ > -- *** Dr. A.D. Karve President, Appropriate Rural Technology Institute (ARTI) *Please change my email address in your records to: [email protected] * _______________________________________________ Gasification mailing list to Send a Message to the list, use the email address [email protected] to UNSUBSCRIBE or Change your List Settings use the web page http://lists.bioenergylists.org/mailman/listinfo/gasification_lists.bioenergylists.org for more Gasifiers, News and Information see our web site: http://gasifiers.bioenergylists.org/
