Dear Mr. Jain, What is the maximum tolerable limit of ash in the coal to be used in your gasifier?There exists a vast potential for making charcoal from agricultural waste, but the ash content is rather high (between 30 and 35%) in this charcoal because of the high silica content in the waste. Yours A.D.Karve *** Dr. A.D. Karve
Chairman, Samuchit Enviro Tech Pvt Ltd (www.samuchit.com) Trustee & Founder President, Appropriate Rural Technology Institute (ARTI) On Tue, May 26, 2015 at 7:57 PM, Rajiv Gupta <[email protected]> wrote: > To the list courtesy of Ankur Scientific: > > Dear Mr. Tom, > > Please find attached our Coal Gasifier brochure for your reference. > > > Best Regards, > > Rajiv Gupta > -----Original Message----- > From: BC Jain [mailto:[email protected]] > Sent: 26 May, 2015 12:04 PM > To: 'Tom Miles' > > Thanks, Tom. I do not know if you are aware of the coal gasifier series > launched by us - extremely clean gasification at a few hundred kilograms to > a few tons per hour processing rates. A number of these plants have been set > up recently in a town in Gujarat, famous for ceramic industry. Earlier, > updraft gasifiers were used and the pollution led to banning of these by the > highest court in Gujarat. Our technology was a response to solve this issue > and allows industry to use a low cost fuel in a totally environment > -friendly manner - no condensate, no process water and no air pollution. > Kiln temperatures of upto 1160 deg C have been consistently met. Plants > installed have little maintenance and very high reliability as a continuous > process industry is involved. > > We are also offering these gasifiers in power mode for power outputs of upto > 5 MW or so. Coal used is typically Indonesian, low ash which is very > regularly used in India. > > I shall ask a colleague of mine to send relevant details to you. > > Best wishes, > > BC JAIN > > Rajiv to talk to me. > > -----Original Message----- > From: Tom Miles [mailto:[email protected]] > Sent: Tuesday, May 26, 2015 10:58 AM > To: 'BC Jain' > Subject: RE: SPAM: Re: [Gasification] Gasification Digest, Vol 57, Issue 9 > > BC, > > Good to see you that you are monitoring the coal gasifier discussion. You > are still a member of the list so you can post directly to the discussion. > > Send to: [email protected]> > > Kind regards, > > Tom > Today's Topics: > > 1. Difference between biomass and coal gasification (Saiteja Chinta) > 2. Re: Difference between biomass and coal gasification (Thomas Koch) > 3. Re: Difference between biomass and coal gasification (Mano Va) > 4. Re: Difference between biomass and coal gasification > (Arnt Karlsen) > 5. Re: Difference between biomass and coal gasification (Juan Moreno) > > > ---------------------------------------------------------------------- > > Message: 1 > Date: Mon, 25 May 2015 11:34:08 +0530 > From: Saiteja Chinta <[email protected]> > To: [email protected] > Subject: [Gasification] Difference between biomass and coal > gasification > Message-ID: > <CAH6fn7A8LGFaTVeYZQjBjcJKctX6jRsPA8=vug5wngenytb...@mail.gmail.com> > Content-Type: text/plain; charset="utf-8" > > Hi all, > > Thanks for the response, but I am once again stating my question with some > specifications. > > I am interested in coal gasification where coal used is with high ash > content and less reactive. > > Capacity of gasifier is around 30 Tons of coal per day and technology is > updraft fixed bed. > > If the reactor is operated at high temperature to crack any tar, ash would > come out in molten form (Not desired) as conditions will cross ash melting > point. > > So in this sense, tar generated after gas cooling be recycled into gasifier? > > Regards, > > Saiteja > -------------- next part -------------- > An HTML attachment was scrubbed... > URL: > <http://lists.bioenergylists.org/pipermail/gasification_lists.bioenergylists > .org/attachments/20150525/7f6caf5d/attachment-0001.html> > > ------------------------------ > > Message: 2 > Date: Mon, 25 May 2015 06:30:06 +0000 > From: Thomas Koch <[email protected]> > To: Discussion of biomass pyrolysis and gasification > <[email protected]> > Subject: Re: [Gasification] Difference between biomass and coal > gasification > Message-ID: > <[email protected]> > Content-Type: text/plain; charset="utf-8" > > Hi Saiteja > > In an updraft fixed bed gasifier there is no clear link between maximal > temperature and tar content in the gas. > > Slagging takes place in the oxidizing zone in the bottom of the reaction > zone, tar is made in pyrolysis zone in the top of the bed. > > If you observe slagging you can inject water together with the air ? eg if > you use a water scrubber as part of you gas cleaning you have a fraction to > get rid of. That is one way to reduce the temperature. > > There Is a lot of reports from the development of the V?lund updraft > gasifier in Harbo?re that vould be very relevant for you to read. > > http://www.res-chains.eu/wp-content/uploads/2013/04/Case-Study-Gasification- > Harbo%C3%B8re.pdf > > Thomas > > > > > > > Fra: Gasification [mailto:[email protected]] P? > vegne af Saiteja Chinta > Sendt: 25. maj 2015 08:04 > Til: [email protected] > Emne: [Gasification] Difference between biomass and coal gasification > > > Hi all, > > Thanks for the response, but I am once again stating my question with some > specifications. > > I am interested in coal gasification where coal used is with high ash > content and less reactive. > > Capacity of gasifier is around 30 Tons of coal per day and technology is > updraft fixed bed. > > If the reactor is operated at high temperature to crack any tar, ash would > come out in molten form (Not desired) as conditions will cross ash melting > point. > > So in this sense, tar generated after gas cooling be recycled into gasifier? > > Regards, > > Saiteja > -------------- next part -------------- > An HTML attachment was scrubbed... > URL: > <http://lists.bioenergylists.org/pipermail/gasification_lists.bioenergylists > .org/attachments/20150525/74acf41d/attachment-0001.html> > > ------------------------------ > > Message: 3 > Date: Mon, 25 May 2015 13:18:38 +0530 > From: Mano Va <[email protected]> > To: Discussion of biomass pyrolysis and gasification > <[email protected]> > Subject: Re: [Gasification] Difference between biomass and coal > gasification > Message-ID: > <cakvvu5gzpjcd-epkagvxugnibvg9e6lwjcwcw2vjcpxw7j+...@mail.gmail.com> > Content-Type: text/plain; charset="utf-8" > > HI Saiteja Chinta > > I want to sare some points with u > > I am interested in coal gasification where coal used is with high ash > content and less reactive > > ** High Ash content Leads to more Clinker formation * > ** Its Difficult to continues operation* > > Capacity of gasifier is around 30 Tons of coal per day and technology is > updraft fixed bed > > **1.25 ton /hr Updraft Leads to more tar formation* > > If the reactor is operated at high temperature to crack any tar, ash would > come out in molten form (Not desired) as conditions will cross ash melting > point. > > **If u maintained high temperature also in updraft moisture content and > pyrolysis zone Tar wapers are mixed with gas* > > So in this sense, tar generated after gas cooling be recycled into gasifier? > > *May be Make some pellet form can reuse that tar mix with coal powder * > > On Mon, May 25, 2015 at 11:34 AM, Saiteja Chinta <[email protected]> > wrote: > >> Hi all, >> >> Thanks for the response, but I am once again stating my question with >> some specifications. >> >> I am interested in coal gasification where coal used is with high ash >> content and less reactive. >> >> Capacity of gasifier is around 30 Tons of coal per day and technology >> is updraft fixed bed. >> >> If the reactor is operated at high temperature to crack any tar, ash >> would come out in molten form (Not desired) as conditions will cross >> ash melting point. >> >> So in this sense, tar generated after gas cooling be recycled into >> gasifier? >> >> Regards, >> >> Saiteja >> >> _______________________________________________ >> 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.bi >> oenergylists.org >> >> for more Gasifiers, News and Information see our web site: >> http://gasifiers.bioenergylists.org/ >> >> > -------------- next part -------------- > An HTML attachment was scrubbed... > URL: > <http://lists.bioenergylists.org/pipermail/gasification_lists.bioenergylists > .org/attachments/20150525/d648ecb9/attachment-0001.html> > > ------------------------------ > > Message: 4 > Date: Mon, 25 May 2015 11:10:22 +0200 > From: Arnt Karlsen <[email protected]> > To: [email protected] > Subject: Re: [Gasification] Difference between biomass and coal > gasification > Message-ID: <[email protected]> > Content-Type: text/plain; charset=US-ASCII > > On Mon, 25 May 2015 11:34:08 +0530, Saiteja wrote in message > <CAH6fn7A8LGFaTVeYZQjBjcJKctX6jRsPA8=vug5wngenytb...@mail.gmail.com>: > >> Hi all, >> >> Thanks for the response, but I am once again stating my question with >> some specifications. >> >> I am interested in coal gasification where coal used is with high ash >> content and less reactive. >> >> Capacity of gasifier is around 30 Tons of coal per day and technology >> is updraft fixed bed. > > ..can this be modified to fit e.g. a 1 - 2 meter tall "battery of Imberts" > inside your current reactor vessel? I haven't made up my mind on the ideal > sizes for my gasifier and I have a few ideas I'd like to try out. > > ..regardless of sizes, the hot section of my gasifier is going to be about > 1 to 2 meters tall, and I'd like to consentrate on that rather on the other > junk I need to test my ideas. > >> If the reactor is operated at high temperature to crack any tar, ash >> would come out in molten form (Not desired) as conditions will cross >> ash melting point. > > ..in my gasifier (75kWe-300kWth "V-hearth Imbert" with tar vapor flare on > top of the combustion zone "lens") I simply draw my tar vapors off my fuel > hopper that sits on top of my combustion zone "lens", pipe it and some air > straight down into my flare and use the combustion zone "lens" to ignite and > burn my tar vapors, this also agitates and stabilizes the Imbert combustion > zone "lens." > > ..for updraft, this becomes a little harder, as you have tar vapors "all > over" your gas, and not just in your fuel hopper. > >> So in this sense, tar generated after gas cooling be recycled into >> gasifier? > > ..your tar vapors generated in your gasifier and then condensed into tar > droplets when you cool your gas. > > ..with your upstream gasifier, you have to clean your entire product gas > stream, how much does that cost? > > ..with my setup, I keep my tar vapors away from my product gas, instead I > use them to heat, agitate and stabilize my "Imbert" > combustion zone, and then to fuel it, around 2/3 to 4/5 of it. > > >> Regards, >> >> Saiteja > > > -- > ..med vennlig hilsen = with Kind Regards from Arnt Karlsen ...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. > > > > ------------------------------ > > Message: 5 > Date: Mon, 25 May 2015 08:37:05 -0300 > From: Juan Moreno <[email protected]> > To: Discussion of biomass pyrolysis and gasification > <[email protected]> > Subject: Re: [Gasification] Difference between biomass and coal > gasification > Message-ID: <[email protected]> > Content-Type: text/plain; charset="windows-1252"; Format="flowed" > > 1. You want to adapt a biomass gasifier to coal gasifier? > 2. If you have high ash coal, you know the components of these ashes, as > many inorganic can catalyze your reaction and behave in a better way. > 3. What is the calorific value of your coal, will be the subbitominosos > type. > 4. Do you know which is the melting point of your ashes? > > Juan Moreno > > El 25-05-2015 a las 6:10, Arnt Karlsen escribi?: >>> Hi all, >>> > >>> >Thanks for the response, but I am once again stating my question >>> >with some specifications. >>> > >>> >I am interested in coal gasification where coal used is with high >>> >ash content and less reactive. >>> > >>> >Capacity of gasifier is around 30 Tons of coal per day and >>> >technology is updraft fixed bed. >> ..can this be modified to fit e.g. a 1 - 2 meter tall "battery of >> Imberts" inside your current reactor vessel? I haven't made up my >> mind on the ideal sizes for my gasifier and I have a few ideas I'd >> like to try out. >> >> ..regardless of sizes, the hot section of my gasifier is going to be >> about 1 to 2 meters tall, and I'd like to consentrate on that rather >> on the other junk I need to test my ideas. >> >>> >If the reactor is operated at high temperature to crack any tar, ash >>> >would come out in molten form (Not desired) as conditions will cross >>> >ash melting point. >> ..in my gasifier (75kWe-300kWth "V-hearth Imbert" with tar vapor flare >> on top of the combustion zone "lens") I simply draw my tar vapors off >> my fuel hopper that sits on top of my combustion zone "lens", pipe it >> and some air straight down into my flare and use the combustion zone >> "lens" to ignite and burn my tar vapors, this also agitates and >> stabilizes the Imbert combustion zone "lens." >> >> ..for updraft, this becomes a little harder, as you have tar vapors >> "all over" your gas, and not just in your fuel hopper. >> >>> >So in this sense, tar generated after gas cooling be recycled into >>> >gasifier? >> ..your tar vapors generated in your gasifier and then condensed into >> tar droplets when you cool your gas. >> >> ..with your upstream gasifier, you have to clean your entire product >> gas stream, how much does that cost? >> >> ..with my setup, I keep my tar vapors away from my product gas, >> instead I use them to heat, agitate and stabilize my "Imbert" >> combustion zone, and then to fuel it, around 2/3 to 4/5 of it. >> >> >>> >Regards, >>> > >>> >Saiteja > > -------------- next part -------------- > A non-text attachment was scrubbed... > Name: juan_moreno.vcf > Type: text/x-vcard > Size: 207 bytes > Desc: not available > URL: > <http://lists.bioenergylists.org/pipermail/gasification_lists.bioenergylists > .org/attachments/20150525/f7e80f32/attachment-0001.vcf> > > ------------------------------ > > Subject: Digest Footer > > _______________________________________________ > 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/ > > > > ------------------------------ > > End of Gasification Digest, Vol 57, Issue 9 > ******************************************* > > > _______________________________________________ > 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/ > > _______________________________________________ > 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.bioenergylists.org > > for more Gasifiers, News and Information see our web site: > http://gasifiers.bioenergylists.org/ > _______________________________________________ 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.bioenergylists.org for more Gasifiers, News and Information see our web site: http://gasifiers.bioenergylists.org/
