[Gasification] "un-inverting" an Inverted Downdraft Gasifier?

[Thomas Reed]

Dear All:

If you invert the "inverted downdraft gasifier", you get the 
conventional Downdraft (Imbert) Gasifier. 

It turns out that for subtle reasons the DG operates best at very high 
thruput and the IDG operates at much lower thruput levels.  Look for my 
coming book.

Over a million were produced and used during WWII and saved the lives of 
the civilian population.  What's going to save 7 B lives when oil and 
gas are gone?

TOM REED      BEF




Kevin Chisholm wrote:
> Dear Mike
> ----- Original Message ----- 
> From: "Michael Redler" <redlerm at yahoo.com>
> To: <Gasification at listserv.repp.org>
> Sent: Thursday, November 09, 2006 1:41 PM
> Subject: [Gasification] "un-inverting" an Inverted Downdraft Gasifier?
>
>
>   
>> Hi everyone,
>>
>> Warning - This may be a silly question:
>>     
>
> Not at all!!
>   
>> What would happen if one purchased an "inverted downdraft gasifier" and
>> "un-inverted" it?
>>     
>
> It was called an "inverted downdraft", simply because  it was very similar 
> to a downdraft gasifier turned upsiode down. When this was done, the fire 
> was the on the top.
>
> Then it was very easy to use a simple "pressure fan" at the bottom to 
> develop a "delta P" across the bed, and keep the fire going. Researchers 
> could easily see what was going on.
>
> So, I would suggest that if you reverted an inverted downdraft, you would 
> have pressurized downdraft gasifier with bottom discharge at atmospheric 
> pressure.
>
> Recall from a previous thread about a month or 7 weeks ago,where there was a 
> detailed discussion on DD and IDD gasifiers, and there was a feeling that 
> they are different in detail, because of  convection forces. In both cases, 
> the "Superficial Velocity" is important.
>
> Best wishes,
>
> Kevin
>   
>> Mike
>>
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>>
>>     
>
>
>
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