[Gasification] ..back to defining gasification

[Dries Vansteenkiste]

my humble try at defining gasifiers:

"A gasifier is a device designed for the controlled production of a complex
gas mixture and process heat through accelerated conversion of a carbon-rich
feedstock"

* accelerated conversion: usually thermochemical conversion, i.e. by
applying heat (excludes slow bioconversion processes such as methane 
fermentation
from the definition).

* designed for controlled production of gas and heat: there is a production
goal - this may distinguish (MSW) gasifiers from (MSW) incinerators, the
latter having as primary goal to get rid of the (MSW) feedstock and only
produce heat (...and more air pollution?) - in addition, the higher heat
output of gasifiers distinguishes them also from bioconversion technologies.

* complex gas mixture: may be dirty (tars) or clean, directly usable as a 
fuel or
destined for further processing, distillation or production of fine 
chemicals, whatever
you want, it is a gas mixture with interesting features...

D.V.



----- Original Message ----- 
From: "Jigme Rangdrol" <rangdrol at turboisp.com>
To: <gasification at listserv.repp.org>
Sent: Thursday, May 11, 2006 2:20 PM
Subject: Re: [Gasification] ..back to defining gasification


>I agree whole heartedly that the label "Gasifier" should never be
> limited to fuel production or anything else for that matter.
> Aside from screwing the folks who put in the countless thousands of
> hours of real work on "Non-fuel" gasifiers, we have no idea what new
> devices or uses for gasification are yet to be discovered
> In my view one small sub group hijacking the label is indefensible for
> any reason.
>
> However I would consider an incinerator a type of gasifier.
>
>
> J.R.
>
>
>
> Dries Vansteenkiste wrote:
>
>> Why should the goal of gasifiers be limited to fuel production?
>> If you keep the goals open (fuel, heat, fine chemicals), gasifiers 
>> automatically distinguish themselves from incinerators
>>
>> D. V.
>
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