Dear Mr. Miles: Is the efficiency of the large scale sewage sludge system published? If so, can we get a copy of it easily? Thank you. Dr. Sue Kelly Tom Miles wrote: > Doug, > > One should not conclude that gasifiers do not make NOx. We measured NOx from > the gasification of fuels with different nitrogen contents and found that, > for a given system, NOx generation is proportional to N content. > > Comparisons of NOx reduction from gasification with staged combustion and > flue gas recirculation with SNCR (selective non catalytic reduction using > ammonia or urea) are welcome. To my knowledge, except for one large scale > sewage sludge system, efficiencies of staged combustion and FGR techniques > for high nitrogen fuels have not been published. > > Regards, > > Tom Miles > > ----- Original Message ----- > From: "Graeme Williams" <graeme@powerlink.co.nz> > To: <gasification@crest.org> > Sent: Wednesday, June 26, 2002 1:43 AM > Subject: GAS-L: NOx and Gasifiers > > > Dear Colleagues, > > > > During the years that we have been playing with producer gas, both in > > engines for power generation and for process heat in timber kilns, at no > > time has NOx been an emission problem. > > > > Although gasifier temperatures are high, it appears that it just doesn't > > happen in this process although I suppose anything is possible given > certain > > conditions existing. > > > > The adiabatic flame temperature of clean producer gas ie tar free has > never > > exceeded 1100 degrees Celcius, in our experience, and in fact is one of > the > > measures we use to check to see if tar is present in the gas stream. > > > > Hope this helps. > > > > Doug Williams > > FLUIDYNE GASIFICATION > > > > > > - > > Gasification List Archives: > > http://www.crest.org/discussion/gasification/200202/ > > > > Gasification List Moderator: > > Tom Reed, Biomass Energy Foundation, Reedtb2@cs.com > > www.webpan.com/BEF > > List-Post: <mailto:gasification@crest.org> > > List-Help: <mailto:gasification-help@crest.org> > > List-Unsubscribe: <mailto:gasification-unsubscribe@crest.org> > > List-Subscribe: <mailto:gasification-subscribe@crest.org> > > > > Sponsor the Gasification List: http://www.crest.org/discuss3.html > > - > > Other Gasification Events and Information: > > http://www.bioenergy2002.org > > http://www.crest.org/articles/static/1/1010424940_7.html Bioenergy > > http://www.crest.org/articles/static/1/1011975339_7.html Gasification > > http://www.crest.org/articles/static/1/1011975672_7.html Carbon > > > > > > - > Gasification List Archives: > http://www.crest.org/discussion/gasification/200202/ > > Gasification List Moderator: > Tom Reed, Biomass Energy Foundation, Reedtb2@cs.com > www.webpan.com/BEF > List-Post: <mailto:gasification@crest.org> > List-Help: <mailto:gasification-help@crest.org> > List-Unsubscribe: <mailto:gasification-unsubscribe@crest.org> > List-Subscribe: <mailto:gasification-subscribe@crest.org> > > Sponsor the Gasification List: http://www.crest.org/discuss3.html > - > Other Gasification Events and Information: > http://www.bioenergy2002.org > http://www.crest.org/articles/static/1/1010424940_7.html Bioenergy > http://www.crest.org/articles/static/1/1011975339_7.html Gasification > http://www.crest.org/articles/static/1/1011975672_7.html Carbon - Gasification List Archives: http://www.crest.org/discussion/gasification/200202/ Gasification List Moderator: Tom Reed, Biomass Energy Foundation, Reedtb2@cs.com www.webpan.com/BEF List-Post: <mailto:gasification@crest.org> List-Help: <mailto:gasification-help@crest.org> List-Unsubscribe: <mailto:gasification-unsubscribe@crest.org> List-Subscribe: <mailto:gasification-subscribe@crest.org> Sponsor the Gasification List: http://www.crest.org/discuss3.html - Other Gasification Events and Information: http://www.bioenergy2002.org http://www.crest.org/articles/static/1/1010424940_7.html Bioenergy http://www.crest.org/articles/static/1/1011975339_7.html Gasification http://www.crest.org/articles/static/1/1011975672_7.html Carbon
