When -in reality- different process conditions are imposed on the manufacturing of product gas or pyrolysis gas in order to optimize process conditions, fuel blend and/or CFB bed make-up, the actual cycle time of the tar measurements will greatly determine the progress of the optimization work. Purpose of the optimization work here is assumed to be the minimization of both gaseous light tars as well as heavy condensable tars. Both lab work and field work experience is appreciated. Orders of magitude are also wellcome. I realize that for practical conditions two parallel systems can accomplish more than one singular system. So, my question is specifically related to the response time of a singular system. best regards, Andries Weststeijn - Gasification List Archives: http://www.crest.org/discussion/gasification/current/ Gasification List Moderator: Tom Reed, Biomass Energy Foundation, Reedtb2@cs.com www.webpan.com/BEF List-Post: <mailto:bioenergy@crest.org> List-Help: <mailto:bioenergy-help@crest.org> List-Unsubscribe: <mailto:bioenergy-unsubscribe@crest.org> List-Subscribe: <mailto:bioenergy-subscribe@crest.org> Sponsor the Gasification List: http://www.crest.org/discuss3.html - Other Gasification Events and Information: http://www.fsec.ucf.edu/bioam/ http://solstice.crest.org/renewables/biomass-info/gasref.shtml http://solstice.crest.org/renewables/biomass-info/