<html><body><div style="color:#000; background-color:#fff; font-family:times new roman, new york, times, serif;font-size:18pt"><div style="RIGHT: auto"><SPAN style="RIGHT: auto">sir can u tell me how i can reduce the tar in gasification in most simplest way?<VAR id=yui-ie-cursor></VAR><BR class=yui-cursor style="RIGHT: auto"></SPAN></div>
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<div>Jai Balwanshi<BR>Assistant Professor<BR>Mechanical Engineering Department<BR>VITS - Indore<BR>Contact No. 9713281992<BR>
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<DIV class=hr style="BORDER-RIGHT: #ccc 1px solid; PADDING-RIGHT: 0px; BORDER-TOP: #ccc 1px solid; PADDING-LEFT: 0px; FONT-SIZE: 0px; PADDING-BOTTOM: 0px; MARGIN: 5px 0px; BORDER-LEFT: #ccc 1px solid; LINE-HEIGHT: 0; PADDING-TOP: 0px; BORDER-BOTTOM: #ccc 1px solid; HEIGHT: 0px" readonly="true" contenteditable="false"></DIV><B><SPAN style="FONT-WEIGHT: bold">From:</SPAN></B> Viswanathan KS <viswanathanks@gmail.com><BR><B><SPAN style="FONT-WEIGHT: bold">To:</SPAN></B> Discussion of biomass pyrolysis and gasification <gasification@lists.bioenergylists.org><BR><B><SPAN style="FONT-WEIGHT: bold">Sent:</SPAN></B> Thursday, 6 October 2011 8:42 AM<BR><B><SPAN style="FONT-WEIGHT: bold">Subject:</SPAN></B> Re: [Gasification] reducing temp. of gasification<BR></FONT><BR>
<DIV id=yiv1047012851>Schoenen Dank and a Happy Dassera<BR><BR>
<DIV class=yiv1047012851gmail_quote>On Thu, Oct 6, 2011 at 8:31 AM, Anand Karve <SPAN dir=ltr><<A href="mailto:adkarve@gmail.com" target=_blank rel=nofollow ymailto="mailto:adkarve@gmail.com">adkarve@gmail.com</A>></SPAN> wrote:<BR>
<BLOCKQUOTE class=yiv1047012851gmail_quote style="PADDING-LEFT: 1ex; MARGIN: 0px 0px 0px 0.8ex; BORDER-LEFT: #ccc 1px solid">Dear Wishwanathan,<BR>we are still working on the idea. It works. We have been able to<BR>reduce the size of the digester to 1/3. Charcoal has to be enclosed in<BR>a net bag. It does float in the initial stages, but later it absorbs<BR>water and becomes heavy and sinks.<BR>Yours<BR>A.D.Karve<BR>
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<DIV class=yiv1047012851h5><BR>On Thu, Oct 6, 2011 at 10:30 AM, Viswanathan KS <<A href="mailto:viswanathanks@gmail.com" target=_blank rel=nofollow ymailto="mailto:viswanathanks@gmail.com">viswanathanks@gmail.com</A>> wrote:<BR>> Dear Dr Karveji<BR>> Your designed digestor for kitchen waste has been popular. Can this digestor<BR>> be made smaller and therefore cheaper and more affordable for households, if<BR>> it is filled with charcoal?<BR>> Charcoal of which size is used and the quantity to be used?<BR>> Will charcoal not tend to float in the digestor?<BR>><BR>><BR>> On Wed, Oct 5, 2011 at 9:22 AM, Anand Karve <<A href="mailto:adkarve@gmail.com" target=_blank rel=nofollow ymailto="mailto:adkarve@gmail.com">adkarve@gmail.com</A>> wrote:<BR>>><BR>>> Dear Henry,<BR>>> There are a lot of very simple ideas that need to be tested. I am<BR>>> currently working on increasing the
efficiency of biogas digesters and<BR>>> feel that it might be possible to reduce the size and the capital<BR>>> expense of a biogas system. For instance, when I filled the digester<BR>>> with charcoal, my system accepted three times the normal daily input<BR>>> and produced three times as much gas.<BR>>> How much electrical energy would be required by the electric arc to<BR>>> produce producer gas? One can perhaps achieve the same temperature<BR>>> with paraboloid mirrors and sunlight.<BR>>> Yours<BR>>> A.D.Karve<BR>>><BR>>> On Mon, Sep 12, 2011 at 5:52 AM, Energy7 <<A href="mailto:Energy7@telusplanet.net" target=_blank rel=nofollow ymailto="mailto:Energy7@telusplanet.net">Energy7@telusplanet.net</A>> wrote:<BR>>> > Hi All<BR>>> > I Hope this is not a double post ( I posted this from my I phone earlier<BR>>> > this morning and it has yet to show up
)...<BR>>> ><BR>>> > Dear A.D. Karve<BR>>> > My exact thought a while ago was to achieve this temperature with an<BR>>> > internal electric arc furnace. The resulting gas can be put thru a<BR>>> > catalyst.<BR>>> > Just lately was reminded by a colleague of the efficiency of electro<BR>>> > static<BR>>> > precipitators and am presently researching their compatibility with<BR>>> > producer<BR>>> > gas.<BR>>> > So : air tight electric arc furnace fed with co2 and preheated feed<BR>>> > stock><BR>>> > catalyst>98%cyclone cleaning>precip> final water filter cooling >dryer ><BR>>> > co2<BR>>> > removal > o2 injection >ice>recycle hot co2 exhaust to preheat feed<BR>>> > stock.<BR>>> > Just an idea.. maybe too complicated? Please send me your ideas.<BR>>> > HN<BR>>>
> ----- Original Message ----- From: "Anand Karve" <<A href="mailto:adkarve@gmail.com" target=_blank rel=nofollow ymailto="mailto:adkarve@gmail.com">adkarve@gmail.com</A>><BR>>> > To: "Discussion of biomass pyrolysis and gasification"<BR>>> > <<A href="mailto:gasification@lists.bioenergylists.org" target=_blank rel=nofollow ymailto="mailto:gasification@lists.bioenergylists.org">gasification@lists.bioenergylists.org</A>><BR>>> > Sent: Saturday, September 10, 2011 11:41 PM<BR>>> > Subject: [Gasification] reducing temp. of gasification<BR>>> ><BR>>> ><BR>>> >> Dear All,<BR>>> >> one requires about 700C temperature for making producer gas. This is<BR>>> >> generally achieved by burning the feedstock itself, for which one<BR>>> >> introduces external air into the reactor. As a result, the producer<BR>>> >> gas gets diluted by the
nitrogen in the air. If the process can be<BR>>> >> conducted in a closed vessel, which is heated from the outside, one<BR>>> >> can get combustible gas without all the nitrogen, but heating the<BR>>> >> feedstock inside a container cannot achieve the temperature that is<BR>>> >> required for producing producer gas, so that what one gets is<BR>>> >> primarily tar vapour. Has anyone thought of using a catalyst for<BR>>> >> getting pyrolysis gas at say 300 C? It would help me greatly, if such<BR>>> >> a catalyst were available.<BR>>> >> Yours<BR>>> >> A.D.Karve<BR>>> >><BR>>> >> _______________________________________________<BR>>> >> Gasification mailing list<BR>>> >><BR>>> >> to Send a Message to the list, use the email address<BR>>> >> <A
href="mailto:Gasification@bioenergylists.org" target=_blank rel=nofollow ymailto="mailto:Gasification@bioenergylists.org">Gasification@bioenergylists.org</A><BR>>> >><BR>>> >> to UNSUBSCRIBE or Change your List Settings use the web page<BR>>> >><BR>>> >><BR>>> >> <A href="http://lists.bioenergylists.org/mailman/listinfo/gasification_lists.bioenergylists.org" target=_blank rel=nofollow>http://lists.bioenergylists.org/mailman/listinfo/gasification_lists.bioenergylists.org</A><BR>>> >><BR>>> >> for more Gasifiers, News and Information see our web site:<BR>>> >> <A href="http://gasifiers.bioenergylists.org/" target=_blank rel=nofollow>http://gasifiers.bioenergylists.org/</A><BR>>> ><BR>>> ><BR>>> > _______________________________________________<BR>>> > Gasification mailing list<BR>>> ><BR>>> > to Send a
Message to the list, use the email address<BR>>> > <A href="mailto:Gasification@bioenergylists.org" target=_blank rel=nofollow ymailto="mailto:Gasification@bioenergylists.org">Gasification@bioenergylists.org</A><BR>>> ><BR>>> > to UNSUBSCRIBE or Change your List Settings use the web page<BR>>> ><BR>>> > <A href="http://lists.bioenergylists.org/mailman/listinfo/gasification_lists.bioenergylists.org" target=_blank rel=nofollow>http://lists.bioenergylists.org/mailman/listinfo/gasification_lists.bioenergylists.org</A><BR>>> ><BR>>> > for more Gasifiers, News and Information see our web site:<BR>>> > <A href="http://gasifiers.bioenergylists.org/" target=_blank rel=nofollow>http://gasifiers.bioenergylists.org/</A><BR>>> ><BR>>><BR>>><BR>>><BR>>> --<BR>>> ***<BR>>> Dr. A.D. Karve<BR>>> Trustee & Founder President, Appropriate
Rural Technology Institute (ARTI)<BR>>><BR>>> _______________________________________________<BR>>> Gasification mailing list<BR>>><BR>>> to Send a Message to the list, use the email address<BR>>> <A href="mailto:Gasification@bioenergylists.org" target=_blank rel=nofollow ymailto="mailto:Gasification@bioenergylists.org">Gasification@bioenergylists.org</A><BR>>><BR>>> to UNSUBSCRIBE or Change your List Settings use the web page<BR>>><BR>>> <A href="http://lists.bioenergylists.org/mailman/listinfo/gasification_lists.bioenergylists.org" target=_blank rel=nofollow>http://lists.bioenergylists.org/mailman/listinfo/gasification_lists.bioenergylists.org</A><BR>>><BR>>> for more Gasifiers, News and Information see our web site:<BR>>> <A href="http://gasifiers.bioenergylists.org/" target=_blank rel=nofollow>http://gasifiers.bioenergylists.org/</A><BR>><BR>><BR>>
_______________________________________________<BR>> Gasification mailing list<BR>><BR>> to Send a Message to the list, use the email address<BR>> <A href="mailto:Gasification@bioenergylists.org" target=_blank rel=nofollow ymailto="mailto:Gasification@bioenergylists.org">Gasification@bioenergylists.org</A><BR>><BR>> to UNSUBSCRIBE or Change your List Settings use the web page<BR>> <A href="http://lists.bioenergylists.org/mailman/listinfo/gasification_lists.bioenergylists.org" target=_blank rel=nofollow>http://lists.bioenergylists.org/mailman/listinfo/gasification_lists.bioenergylists.org</A><BR>><BR>> for more Gasifiers, News and Information see our web site:<BR>> <A href="http://gasifiers.bioenergylists.org/" target=_blank rel=nofollow>http://gasifiers.bioenergylists.org/</A><BR>><BR>><BR><BR><BR><BR>--<BR>***<BR>Dr. A.D. Karve<BR>Trustee & Founder President, Appropriate Rural Technology Institute
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