On Jul 25, 2010, at 1:01 PM, Arnt Karlsen wrote: > On Sun, 25 Jul 2010 15:57:23 +1200, doug.williams wrote in message > <a8f91ab435814b67ad2367da4facb...@dougspc>: > >> Hi Brian and Gasification Colleagues, >> >> It's not always easy to be correct when you analyse these flares, and >> you need to tell us more about how you are burning the gas after it >> leaves the gasifier. >> >> 1. Is it first cooled and cleaned of dust and moisture? >> >> 2. If not,what temperature is the gas at the exit point of the >> gasifier? >> >> 3. Are you able to control the amount of combustion air going into >> the burner nozzle? >> >> 4. What temperature is the flare exhibiting from the probe I saw you >> using in the flare? >> >> 5. Can you feel a stinging type of radiation from the flare if you >> place your hand or face close up? >> >> ------------------------ >> Greg has already offered some examples of the possible answers, but >> there are other factors to influence the flare behaviour, which can >> be narrowed down for your specific gasification flare experience that >> you share with us. > > ..the gray core right under your flame, wet tar vapors?
Great question!! I would very much like to know what that gray cone is at the base of the flare. Unfortunately, I've not considered that question as much as we should have. But I'll try to gather some information about it next time we do a test run. > > ..try fit a cloth or paper filter in your gas piping to try > collect some of it. Steam (water vapors) and wet charcoal > dust "burns" and burns colorfully too. ;o) Hmm. We do have an in-line filter housing a bit before our flare pipe, but right this minute, it does not contain any kind of filter element. We have a 40 micron element for that housing but I wonder if we could stuff some paper towels in there is see what might accumulate.... Good food for thought there, I like it! I should also see what I can learn by extinguishing the fire and study the flare pipe output WITHOUT the flame. Not sure how I'll distinguish between smoke versus water vapor. (Given how cool the producer gas is at the flare pipe, I would NOT expect "steam". Very fine water droplets, maybe, but not steam.) But your question is one that I've been asking myself, what is that diffuse gray cone? -brian > > -- > ..med vennlig hilsen = with Kind Regards from Arnt... ;o) > ...with a number of polar bear hunters in his ancestry... > Scenarios always come in sets of three: > best case, worst case, and just in case. > > _______________________________________________ > Gasification mailing list > [email protected] > http://listserv.repp.org/mailman/listinfo/gasification_listserv.repp.org > http://gasifiers.bioenergylists.org > http://info.bioenergylists.org _______________________________________________ Gasification mailing list [email protected] http://listserv.repp.org/mailman/listinfo/gasification_listserv.repp.org http://gasifiers.bioenergylists.org http://info.bioenergylists.org
