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Dear Rajiv Gupta,<br>
<br>
I am one of your gasifier user. According to my experience, when I
load the Charcoal bed too high (obove the Nozle) or when I forget to
rotate the combrotor to remove the charcoal, the charcoal will
ignited infront the nozles and the nozles are burned (disappeared)
in 5-10 minute. <br>
<br>
I wonder if the Nozle can stay for how long when you burn coal?<br>
<br>
Regards,<br>
<br>
Darius<br>
<br>
On 5/26/2015 9:27 PM, Rajiv Gupta wrote:
<blockquote
cite="mid:016601d097c0$0895e2a0$19c1a7e0$@ankurscientific.com"
type="cite">
<pre wrap="">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 [<a class="moz-txt-link-freetext" href="mailto:bcjain@ankurscientific.com">mailto:bcjain@ankurscientific.com</a>]
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 [<a class="moz-txt-link-freetext" href="mailto:tmiles@trmiles.com">mailto:tmiles@trmiles.com</a>]
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: <a class="moz-txt-link-abbreviated" href="mailto:gasification@lists.bioenergylists.org">gasification@lists.bioenergylists.org</a>>
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 <a class="moz-txt-link-rfc2396E" href="mailto:chinta.saiteja@gmail.com"><chinta.saiteja@gmail.com></a>
To: <a class="moz-txt-link-abbreviated" href="mailto:gasification@lists.bioenergylists.org">gasification@lists.bioenergylists.org</a>
Subject: [Gasification] Difference between biomass and coal
gasification
Message-ID:
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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
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Message: 2
Date: Mon, 25 May 2015 06:30:06 +0000
From: Thomas Koch <a class="moz-txt-link-rfc2396E" href="mailto:tk@tke.dk"><tk@tke.dk></a>
To: Discussion of biomass pyrolysis and gasification
<a class="moz-txt-link-rfc2396E" href="mailto:gasification@lists.bioenergylists.org"><gasification@lists.bioenergylists.org></a>
Subject: Re: [Gasification] Difference between biomass and coal
gasification
Message-ID:
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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.
<a class="moz-txt-link-freetext" href="http://www.res-chains.eu/wp-content/uploads/2013/04/Case-Study-Gasification">http://www.res-chains.eu/wp-content/uploads/2013/04/Case-Study-Gasification</a>-
Harbo%C3%B8re.pdf
Thomas
Fra: Gasification [<a class="moz-txt-link-freetext" href="mailto:gasification-bounces@lists.bioenergylists.org">mailto:gasification-bounces@lists.bioenergylists.org</a>] P?
vegne af Saiteja Chinta
Sendt: 25. maj 2015 08:04
Til: <a class="moz-txt-link-abbreviated" href="mailto:gasification@lists.bioenergylists.org">gasification@lists.bioenergylists.org</a>
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
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Message: 3
Date: Mon, 25 May 2015 13:18:38 +0530
From: Mano Va <a class="moz-txt-link-rfc2396E" href="mailto:gmmanovassm@gmail.com"><gmmanovassm@gmail.com></a>
To: Discussion of biomass pyrolysis and gasification
<a class="moz-txt-link-rfc2396E" href="mailto:gasification@lists.bioenergylists.org"><gasification@lists.bioenergylists.org></a>
Subject: Re: [Gasification] Difference between biomass and coal
gasification
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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 <a class="moz-txt-link-rfc2396E" href="mailto:chinta.saiteja@gmail.com"><chinta.saiteja@gmail.com></a>
wrote:
</pre>
<blockquote type="cite">
<pre wrap="">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
<a class="moz-txt-link-abbreviated" href="mailto:Gasification@bioenergylists.org">Gasification@bioenergylists.org</a>
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oenergylists.org
for more Gasifiers, News and Information see our web site:
<a class="moz-txt-link-freetext" href="http://gasifiers.bioenergylists.org/">http://gasifiers.bioenergylists.org/</a>
</pre>
</blockquote>
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Message: 4
Date: Mon, 25 May 2015 11:10:22 +0200
From: Arnt Karlsen <a class="moz-txt-link-rfc2396E" href="mailto:arnt@iaksess.no"><arnt@iaksess.no></a>
To: <a class="moz-txt-link-abbreviated" href="mailto:gasification@lists.bioenergylists.org">gasification@lists.bioenergylists.org</a>
Subject: Re: [Gasification] Difference between biomass and coal
gasification
Message-ID: <a class="moz-txt-link-rfc2396E" href="mailto:20150525111022.0f7b80bc@nb6.lan"><20150525111022.0f7b80bc@nb6.lan></a>
Content-Type: text/plain; charset=US-ASCII
On Mon, 25 May 2015 11:34:08 +0530, Saiteja wrote in message
<a class="moz-txt-link-rfc2396E" href="mailto:CAH6fn7A8LGFaTVeYZQjBjcJKctX6jRsPA8=vUg5wNGEnytBjqA@mail.gmail.com"><CAH6fn7A8LGFaTVeYZQjBjcJKctX6jRsPA8=vUg5wNGEnytBjqA@mail.gmail.com></a>:
</pre>
<blockquote type="cite">
<pre wrap="">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.
</pre>
</blockquote>
<pre wrap="">..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.
</pre>
<blockquote type="cite">
<pre wrap="">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.
</pre>
</blockquote>
<pre wrap="">..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.
</pre>
<blockquote type="cite">
<pre wrap="">So in this sense, tar generated after gas cooling be recycled into
gasifier?
</pre>
</blockquote>
<pre wrap="">..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.
</pre>
<blockquote type="cite">
<pre wrap="">Regards,
Saiteja
</pre>
</blockquote>
<pre wrap="">
--
..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 <a class="moz-txt-link-rfc2396E" href="mailto:juan.moreno@umag.cl"><juan.moreno@umag.cl></a>
To: Discussion of biomass pyrolysis and gasification
<a class="moz-txt-link-rfc2396E" href="mailto:gasification@lists.bioenergylists.org"><gasification@lists.bioenergylists.org></a>
Subject: Re: [Gasification] Difference between biomass and coal
gasification
Message-ID: <a class="moz-txt-link-rfc2396E" href="mailto:55630961.3090808@umag.cl"><55630961.3090808@umag.cl></a>
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?:
</pre>
<blockquote type="cite">
<blockquote type="cite">
<pre wrap="">Hi all,
</pre>
<blockquote type="cite">
<pre wrap="">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.
</pre>
</blockquote>
</blockquote>
<pre wrap="">..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.
</pre>
<blockquote type="cite">
<blockquote type="cite">
<pre wrap="">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.
</pre>
</blockquote>
</blockquote>
<pre wrap="">..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.
</pre>
<blockquote type="cite">
<blockquote type="cite">
<pre wrap="">So in this sense, tar generated after gas cooling be recycled into
gasifier?
</pre>
</blockquote>
</blockquote>
<pre wrap="">..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.
</pre>
<blockquote type="cite">
<blockquote type="cite">
<pre wrap="">Regards,
Saiteja
</pre>
</blockquote>
</blockquote>
</blockquote>
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