[Gasification] making wood pellets

[Kevin Chisholm]

Heat softens or melts lignin.

----- Original Message ----- 
From: "Mark Ludlow" <mark at ludlow.com>
To: "'Jeff Davis'" <jeff0124 at velocity.net>; <gasification at listserv.repp.org>
Sent: Wednesday, August 30, 2006 4:07 AM
Subject: Re: [Gasification] making wood pellets


> So heating the die reduces friction-perhaps by making the feedstock more
> lubricious?
>
> -----Original Message-----
> From: gasification-bounces at listserv.repp.org
> [mailto:gasification-bounces at listserv.repp.org] On Behalf Of Jeff Davis
> Sent: Tuesday, August 29, 2006 11:24 PM
> To: gasification at listserv.repp.org
> Subject: Re: [Gasification] making wood pellets
>
>
> Oops, just as I was about to fall a sleep it hit me, I forgot:
>
> Yes if you do not heat the die the friction of densification will heat the
> die BUT you will have increased die wear and increased power requirement. 
> So
> heat the die to have longer die life and use less energy. Well in regards 
> to
> the energy, thats if you have cheaper heat than electric motor energy 
> (it's
> getting late).
>
> Good night
>
> Jeff
>
>
>
> On Wednesday 30 August 2006 01:09 am, Jeff Davis wrote:
>> On Tuesday 29 August 2006 09:59 pm, Mark Ludlow wrote:
>> > Toby,
>> > Is that 3,000 psi? It seems like the mechanical pressure alone would
>> > generate the modest temperature.
>>
>> Some dies are steam heated, some are not.
>>
>> Jeff
>
> --
> Jeff Davis
> Somewhere 20 miles south of Lake Erie, USA
> http://www.velocity.net/~jeff0124
>
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