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: [email protected] [mailto:[email protected]] 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: [email protected] Phone: 001 403 2109575 _____ Von: Kevin <[email protected]> Gesendet: May 31, 2011 5:02:24 PM An: "Discussion of biomass pyrolysis and gasification" <[email protected]> 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:[email protected]> Kopyscinski To: Discussion of biomass <mailto:[email protected]> 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" <[email protected]> Gesendet: May 31, 2011 12:46:54 PM An: "Discussion of biomass pyrolysis and gasification" <[email protected]> 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 <[email protected]> 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 _______________________________________________ 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.bioenerg ylists.org for more Gasifiers, News and Information see our web site: http://gasifiers.bioenergylists.org/ -- ************************************************ P.V.PANNIRSELVAM ASSOCIATE . PROF. 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