<html><body><div style="color:#000; background-color:#fff; font-family:times new roman, new york, times, serif;font-size:12pt"><div style="RIGHT: auto"><SPAN style="RIGHT: auto">Tasliman,</SPAN></div>
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<div style="RIGHT: auto"><SPAN style="RIGHT: auto">Both C + O2---> CO2 AND C + H2O ---> CO + H2 are occuring. Biomas contains the water in bound and free state, while it is added via steam in the case of coal gasification. In my opinion, the water gas phase shift is the most important reaction and control of it is critical in the next generation of gasification making high power gas and alcohol fuels. </SPAN></div>
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<div style="RIGHT: auto"><SPAN style="RIGHT: auto">Toby Seiler</SPAN></div>
<div style="RIGHT: auto"><SPAN style="RIGHT: auto">Seiler Technical Co.<VAR id=yui-ie-cursor></VAR></SPAN></div>
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<DIV style="BORDER-BOTTOM: #ccc 1px solid; BORDER-LEFT: #ccc 1px solid; PADDING-BOTTOM: 0px; LINE-HEIGHT: 0; MARGIN: 5px 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; HEIGHT: 0px; FONT-SIZE: 0px; BORDER-TOP: #ccc 1px solid; BORDER-RIGHT: #ccc 1px solid; PADDING-TOP: 0px" class=hr contentEditable=false readonly="true"></DIV><B><SPAN style="FONT-WEIGHT: bold">From:</SPAN></B> "gasification-request@lists.bioenergylists.org" <gasification-request@lists.bioenergylists.org><BR><B><SPAN style="FONT-WEIGHT: bold">To:</SPAN></B> gasification@lists.bioenergylists.org <BR><B><SPAN style="FONT-WEIGHT: bold">Sent:</SPAN></B> Friday, February 10, 2012 1:00 PM<BR><B><SPAN style="FONT-WEIGHT: bold">Subject:</SPAN></B> Gasification Digest, Vol 18, Issue 8<BR></FONT></DIV><BR>----- Forwarded Message -----<BR><BR>Send Gasification mailing list submissions to<BR> <A href="mailto:gasification@lists.bioenergylists.org"
ymailto="mailto:gasification@lists.bioenergylists.org">gasification@lists.bioenergylists.org</A><BR><BR>To subscribe or unsubscribe via the World Wide Web, visit<BR> <A href="http://lists.bioenergylists.org/mailman/listinfo/gasification_lists.bioenergylists.org" target=_blank>http://lists.bioenergylists.org/mailman/listinfo/gasification_lists.bioenergylists.org</A><BR><BR>or, via email, send a message with subject or body 'help' to<BR> <A href="mailto:gasification-request@lists.bioenergylists.org" ymailto="mailto:gasification-request@lists.bioenergylists.org">gasification-request@lists.bioenergylists.org</A><BR><BR>You can reach the person managing the list at<BR> <A href="mailto:gasification-owner@lists.bioenergylists.org" ymailto="mailto:gasification-owner@lists.bioenergylists.org">gasification-owner@lists.bioenergylists.org</A><BR><BR>When replying, please edit your Subject line so it is more
specific<BR>than "Re: Contents of Gasification digest..."<BR><BR>Today's Topics:<BR><BR> 1. coal gasification, where did the hydrogen come from? (Tasliman)<BR> 2. Re: coal gasification, where did the hydrogen come from?<BR> (<A href="mailto:LINVENT@aol.com" ymailto="mailto:LINVENT@aol.com">LINVENT@aol.com</A>)<BR> 3. Re: coal gasification, where did the hydrogen come from?<BR> (Thomas Reed)<BR>
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<DIV>Dear list<BR>I must write a brief explanation about biomass and coal gasification. I am confused when I must explain hydrogen production from gasification. I can understand quite well about biomass gasification, because biomass contains H in their chains. But I still have no idea when many authors wrote about producing Hydrogen from coal.<BR><BR>AFAIK coal is mainly carbon, but many wrote this reaction, concerning <B>oxygen gasification</B><BR><BR>C + O2 --> CO2<BR>C + 1/2 O2 --> CO<BR>H + 1/2 O2 --> H2O<BR><BR>my question is where does the <B>hydrogen</B> in that reaction come from if it is not a steam gasification?<BR>Or it should be a steam gasification ?<BR><BR>Thank you,<BR>Tasliman<BR><BR><BR><BR><BR></DIV></DIV>
<DIV id=yiv437398916><FONT face=arial,helvetica><FONT color=#000000 size=2 face=Geneva FAMILY="SANSSERIF">Coal gasification usually is with steam to make it more efficient and the reaction C+H2O->CO+H2 is used, and as you correctly point out, it is steam gasification. <BR>Tom Taylor<BR>In a message dated 2/9/12 10:59:42 PM, emtaz2010@gmail.com writes:<BR><BR><BR>
<BLOCKQUOTE style="BORDER-LEFT: #0000ff 2px solid; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; MARGIN-RIGHT: 0px" cite="" TYPE="CITE"></FONT><FONT color=#000000 size=2 face=Geneva FAMILY="SANSSERIF">Dear list<BR>I must write a brief explanation about biomass and coal gasification. I am confused when I must explain hydrogen production from gasification. I can understand quite well about biomass gasification, because biomass contains H in their chains. But I still have no idea when many authors wrote about producing Hydrogen from coal.<BR><BR>AFAIK coal is mainly carbon, but many wrote this reaction, concerning</FONT><FONT color=#000000 size=2 face=Geneva FAMILY="SANSSERIF"><B> oxygen gasification</B></FONT><FONT color=#000000 size=2 face=Geneva FAMILY="SANSSERIF"><BR><BR>C + O2 --> CO2<BR>C + 1/2 O2 --> CO<BR>H + 1/2 O2 --> H2O<BR><BR>my question is where does the</FONT><FONT color=#000000 size=2 face=Geneva FAMILY="SANSSERIF"><B>
hydrogen</B></FONT><FONT color=#000000 size=2 face=Geneva FAMILY="SANSSERIF"> in that reaction come from if it is not a steam gasification?<BR>Or it should be a steam gasification ?<BR><BR>Thank you,<BR>Tasliman<BR><BR><BR><BR><BR><BR><BR>_______________________________________________<BR>Gasification mailing list<BR><BR>to Send a Message to the list, use the email address<BR>Gasification@bioenergylists.org<BR><BR>to UNSUBSCRIBE or Change your List Settings use the web page<BR>http://lists.bioenergylists.org/mailman/listinfo/gasification_lists.bioenergylists.org<BR><BR>for more Gasifiers, News and Information see our web site:<BR>http://gasifiers.bioenergylists.org/<BR><BR></BLOCKQUOTE></FONT><FONT color=#000000 size=2 face=Geneva FAMILY="SANSSERIF"><BR><BR></FONT><FONT color=#000000 size=2 face=Geneva FAMILY="SANSSERIF"></FONT></FONT></DIV>
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<DIV>Dear Tasliman and all</DIV>
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<DIV>You left out </DIV>
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<DIV>CO + H2O ==> CO2 + H2. </DIV>
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<DIV>Which is the "Watergas Shift" reaction.</DIV>
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<DIV>The energy (enthalpy) change is very close to zero. It is favored for entropy reasons below about 700C over an iron or cobalt catalyst. It is a very important reaction, see Wikipedia .</DIV>
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<DIV>Tom Reed</DIV>
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<DIV><BR><BR>Dr Thomas B Reed<SPAN class=yiv2078798748Apple-style-span> </SPAN>
<DIV><SPAN class=yiv2078798748Apple-style-span>The Biomass Energy Foundation</SPAN>
<DIV><A href="http://www.woodgas.com/" rel=nofollow target=_blank>www.Woodgas.com</A></DIV></DIV></DIV>
<DIV><BR>On Feb 10, 2012, at 12:52 AM, Tasliman <<A href="mailto:emtaz2010@gmail.com" rel=nofollow target=_blank ymailto="mailto:emtaz2010@gmail.com">emtaz2010@gmail.com</A>> wrote:<BR><BR></DIV>
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<DIV>Dear list<BR>I must write a brief explanation about biomass and coal gasification. I am confused when I must explain hydrogen production from gasification. I can understand quite well about biomass gasification, because biomass contains H in their chains. But I still have no idea when many authors wrote about producing Hydrogen from coal.<BR><BR>AFAIK coal is mainly carbon, but many wrote this reaction, concerning <B>oxygen gasification</B><BR><BR>C + O2 --> CO2<BR>C + 1/2 O2 --> CO<BR>H + 1/2 O2 --> H2O<BR><BR>my question is where does the <B>hydrogen</B> in that reaction come from if it is not a steam gasification?<BR>Or it should be a steam gasification ?<BR><BR>Thank you,<BR>Tasliman<BR><BR><BR><BR><BR></DIV></BLOCKQUOTE>
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