[Gasification] How much ton of biomass will burn to produce 1 ton of CO2?

Tom Reed tombreed2010 at gmail.com
Mon Mar 25 19:17:19 CDT 2013


Dear Greg

Thanks for the detailed analysis...

I note that hydrogen, CO, CH4 Argon +O2 and N2 make up about 99% of the total.   Interesting that there are so many other minor constituents requiring mass spec analysis, and probably missed by early analyses.  Do you have a calculated energy content (kJ/m^3 or Btu/ft^3) for this particular analysis?

Thanks a bunch..

Tom Reed

(aka)

Dr. Thomas B Reed 
280 Hardwick Rd
Barre, MA 01005

508 353 7841

On Mar 25, 2013, at 1:57 PM, Greg Manning <a31ford at gmail.com> wrote:Being speculative based on some known facts, I would assume that since 1 ton of biomass (based on Ideal Gasifiction (NOT "syngas", but rather "woodgas" or "producer gas", an average of small gasifiers is a common CO2 output of approximately 11 to 30 % by volume (See sample GCMS report below)
> 
> It would be a qualified guess to say, 7 to 8 tons of biomass, BASED on reasonable gasification of the said biomass. I am NOT considering incineration, ONLY "home made" gasification.
> 
> Greg Manning,
> www.cangas.ca
> 
> ==========================================                   
>                                                                                 
>                    |  RT   |   Compound Name    |  Amount   |                   
>                    | (min) |                    |    %      |                   
>                    -------------------------------------------                  
>                    |  1.164|hydrogen            |     11.22 |                   
>                    |  2.251|C7+                 |      0.03 |                   
>                    |  2.399|carbon dioxide      |     12.79 |                   
>                    |  3.209|methane             |      1.06 |                   
>                    |  3.347|ethane              |      0.06 |                   
>                    |  3.473|ethylene            |      0.18 |                   
>                    |  3.857|propane             |      0.01 |                   
>                    |  0.000|cyclopropane        |      0.00 |                   
>                    |  4.537|propylene           |      0.04 |                   
>                    |  4.935|acetylene           |      0.00 |                   
>                    |  5.138|isobutane           |      0.00 |                   
>                    |  5.191|propadiene          |      0.00 |                   
>                    |  5.326|n-butane            |      0.00 |                   
>                    |  0.000|hydrogen sulfide    |      0.00 |                   
>                    |  6.280|t-2 butene          |      0.00 |                   
>                    |  6.362|1-butene            |      0.00 |                   
>                    |  6.536|isobutylene         |      0.00 |                   
>                    |  6.701|c-2-butene          |      0.00 |                   
>                    |  0.000|isopentane          |      0.00 |                   
>                    |  7.407|n-pentane           |      0.00 |                   
>                    |  7.579|1,3 butadiene       |      0.01 |                   
>                    |  7.807|argon-oxygen        |      6.84 |                   
>                    |  7.961|3-methyl-1-butene   |      0.00 |                   
>                    |  8.090|t-2-pentene         |      0.00 |                   
>                    |  8.155|nitrogen            |     61.36 |                   
>                    |  8.240|2-methyl-2-butene   |      0.00 |                   
>                    |  8.296|1-pentene           |      0.00 |                   
>                    |  8.338|2-methyl-1-butene   |      0.00 |                   
>                    |  8.453|c-2-pentene         |      0.00 |                   
>                    |  9.250|C6+                 |      0.02 |                   
>                    |  9.886|carbon monoxide     |      6.37 |                   
>                                                                                 
>                      Total                           100.00                     
>                                                                                 
>                    ==========================================  
> 
> On Fri, Aug 19, 2011 at 12:35 PM, A.Saravanakumar <sara_mnes at rediffmail.com> wrote:
>> Dear Booster Reed,
>> 
>> How much ton of biomass will burn to produce 1 ton of CO2?
>> 
>> A. Saravanakumar
>> 
>> On Fri, 19 Aug 2011 00:38:55 +0530 wrote
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>> Today's Topics:
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>> 
>> 1. Re: CO2 emission of whole system for smaall size generator
>> 
>> (20kWe) (GF)
>> 
>> 2. Re: CO2 emission of whole system for smaall size generator
>> 
>> (20kWe) (Arnt Karlsen)
>> 
>> 3. Re: CO2 emission of whole system for smaall sizegenerator
>> 
>> (20kWe) (Thomas Reed)
>> 
>> 
>> 
>> 
>> 
>> ----------------------------------------------------------------------
>> 
>> 
>> 
>> Message: 1
>> 
>> Date: Wed, 17 Aug 2011 21:04:26 -0400 (EDT)
>> 
>> From: GF 
>> 
>> To: gasification at lists.bioenergylists.org
>> 
>> Subject: Re: [Gasification] CO2 emission of whole system for smaall
>> 
>> size generator (20kWe)
>> 
>> Message-ID: <8CE2B59E894A95D-1C20-23C51 at Webmail-m104.sysops.aol.com>
>> 
>> Content-Type: text/plain; charset="utf-8"
>> 
>> 
>> 
>> 
>> 
>> It is a little known fact that CO2 can be converted into Methane. Years 
>> ago this was expensive and quite a difficult reaction to perform, 
>> involving very high pressure and temperature reaction chambers together 
>> with exotic catalysts. However,over the years since "Sabatier" 
>> discovered how to perform this remarkable feat, fuel and chemical 
>> refiners have developed a lower cost approach. But fairly high 
>> temperatures are still required, making the process expensive. 
>> Fortunately, there is considerable waste heat available at the exhaust 
>> manifold of your Engine to supplant some of this cost. Additional heat 
>> is also required in order to re-arrange the molecules back into fuel, 
>> this is where a stream of hydrogen from an out side source such as your 
>> gasifier will help, as will super heated distilled water. The 
>> additional heat can be provided by a plasma produced by an arc or an 
>> electrode less plasma produced by Electromagnetic means. nothing more 
>> than 2kw. 
>> 
>> 
>> 
>> 
>> 
>> 
>> 
>> GF 
>> 
>> 
>> 
>> 
>> 
>> 
>> 
>> 
>> 
>> -----Original Message-----
>> 
>> From: J?r?mie Biton 
>> 
>> To: gasification 
>> 
>> Sent: Wed, Aug 17, 2011 9:45 am
>> 
>> Subject: [Gasification] CO2 emission of whole system for smaall size 
>> generator (20kWe)
>> 
>> 
>> 
>> 
>> 
>> 
>> 
>> 
>> 
>> Hello to all,
>> 
>> 
>> 
>> Does anybody have an idea of the CO2 emission after generator?
>> 
>> For comparison, a diesel generator of this size (20kWe) has a rate of 
>> about 1,1 kgeqCO2/kWh.
>> 
>> 
>> 
>> Thanks 
>> 
>> Regards
>> 
>> 
>> 
>> Jeremy
>> 
>> 
>> 
>> 
>> 
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>> 
>> Message: 2
>> 
>> Date: Thu, 18 Aug 2011 08:46:39 +0200
>> 
>> From: Arnt Karlsen 
>> 
>> To: gasification at lists.bioenergylists.org
>> 
>> Subject: Re: [Gasification] CO2 emission of whole system for smaall
>> 
>> size generator (20kWe)
>> 
>> Message-ID: <20110818084639.0748c1ee at celsius.lan>
>> 
>> Content-Type: text/plain; charset=US-ASCII
>> 
>> 
>> 
>> On Wed, 17 Aug 2011 21:04:26 -0400 (EDT), GF wrote in message 
>> 
>> <8CE2B59E894A95D-1C20-23C51 at Webmail-m104.sysops.aol.com>:
>> 
>> 
>> 
>> > 
>> 
>> > It is a little known fact that CO2 can be converted into Methane.
>> 
>> > Years ago this was expensive 
>> 
>> 
>> 
>> ..still is: 
>> 
>> http://en.wikipedia.org/wiki/Methane#Atmospheric_methane
>> 
>> 
>> 
>> -- 
>> 
>> ..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: 3
>> 
>> Date: Wed, 17 Aug 2011 21:38:05 -0400
>> 
>> From: Thomas Reed 
>> 
>> To: Discussion of biomass pyrolysis and gasification
>> 
>> 
>> 
>> Cc: ""
>> 
>> 
>> 
>> Subject: Re: [Gasification] CO2 emission of whole system for smaall
>> 
>> sizegenerator (20kWe)
>> 
>> Message-ID: 
>> 
>> Content-Type: text/plain; charset="utf-8"
>> 
>> 
>> 
>> Jeremy and all
>> 
>> 
>> 
>> Both gasoline and diesel are approximately -CH2- chained together. 
>> Their combustion can be written
>> 
>> 
>> 
>> CH2 + 3/2(O2 + 3.76 N2) ==> CO2 + H2O + 5.64 N2
>> 
>> M 14. 44. 18 158. 220
>> 
>> 
>> 
>> So the all important Air/Fuel, A/F ratio is 220 /14= 15.7
>> 
>> 
>> 
>> The ratio is often given as 14.7. Maybe this is due to the presence of 
>> unsaturated and aromatics with lower H/C ratios.
>> 
>> 
>> 
>> The oxygen sensor is capable of measuring very small amounts of 
>> unburned fuel or oxygen in the exhaust and adjusting the A/F ratio for 
>> perfect combustion. 
>> 
>> 
>> 
>> Diesel combustion is always lean.
>> 
>> 
>> 
>> Lucky us that our cars are so clean.
>> 
>> 
>> 
>> Tom Reed
>> 
>> 
>> 
>> 
>> 
>> 
>> 
>> On Aug 17, 2011, at 9:44 AM, J?r?mie Biton wrote:
>> 
>> 
>> 
>> > Hello to all,
>> 
>> > 
>> 
>> > 
>> 
>> > 
>> 
>> > Does anybody have an idea of the CO2 emission after generator?
>> 
>> > 
>> 
>> > For comparison, a diesel generator of this size (20kWe) has a rate of 
>> about 1,1 kgeqCO2/kWh.
>> 
>> > 
>> 
>> > 
>> 
>> > 
>> 
>> > Thanks
>> 
>> > 
>> 
>> > Regards
>> 
>> > 
>> 
>> > 
>> 
>> > 
>> 
>> > Jeremy
>> 
>> > 
>> 
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