[Gasification] Replacing fuel-oil with biomass

[Peter Singfield]

>> Get busy, Weld some
>> metal, cut some wood, Work hard, Git'er done!

Hi Doug and lister;

The small Chinese gasifiers came in last week and are of excellent
contruction. 

They are of far less cost than anything i could ever "make" here -- for
parts and matierial alone.

These are fulling refractory lined. 

Fuel: 

Smash dry straw into pieces of 2cm. The noisture of straw should be under 20%

(Hmm -- sounds like Bagasse should work??)

Gas output is 5 to 10 M Cu / hr with a value of 4600-5200KJ/M cubed

Hope to run it on charcoal -- we'll see -- eventually -- run an old style
slow RPM Lister diesel in dual fuel mode??

Peter

At 04:59 PM 11/10/2006 +1300, doug.williams wrote:
>Hi Andy,
>
>Thanks for taking the trouble to report interesting information, but can 
>anyone
>afford to add these systems to the smaller gasifiers?
>
>>  Total engine control is the goal. Woodward Governor has gas-engine 
>> control
>> modules that will sense exhaust-gas oxygen, and trim excess-air at the
>> mixer. Bias-fuel (rich mixture) is applied when accelerating, or not when
>> slowing-down. The controller learns conditions in the cylinder to advance
>> the spark event before top-center on the compression-stroke to achive
>> highest cylinder-pressure at the best part of the power-stroke (a special
>> microphone-thing listens for detonation). Turbo-compressor
>> discharge-recirculation can also be controlled by one of these.
>
>It sounds impressive, but I do believe a system like this would be 
>challenged
>using producer gas that can change calorific values in an eye blink :-)
>
>>However,
>> Woodward has no single-mixer body model specific for producer-gas.
>
>Exactly!!!For the commercial need, this is the problem, but suppliers will
>still tell you that it "should" work on producer gas. A recent purchase of a 
>gas
>control system, cost US12,000, and yes, it failed to perform, even though 
>all
>the specifications were supplied. The market needs are still too small and
>wide spread for any supplier to really be interested.  Plus the fact they 
>have
>to first work with a reliable gasifier.
>
>If anything at all, this question is a good sample of the difficulty that 
>commercial
>manufacturers experience to bring their technologies to market. Very little 
>off the
>shelf ancillery components just fit the job, and little is known about their
>reliability untill you try and use it, then it's used, and they will not 
>refund your
>money.
>
>Doug Williams,
>Fluidyne Gasification.
>
>
>
>
>
>
> GLRF
>> (systems) has a few conceps that need to be tested, and applied, but GLRF
>> has only a gasifier that makes no tar and a V-8 that took the strain on 
>> the
>> harness like Grandpa's Clydesdale.
>>
>>  I predict crude-oil price to go higher before spring. Get busy, Weld some
>> metal, cut some wood, Work hard, Git'er done!
>>
>> Andy Schofield
>> Great Lakes Renewable Fuels
>>
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