RE: Coffee husks as fuel

["Paul S. Anderson" <psanders@ilstu.edu>]

Dear Zoli,

Good question you asked.

In the top-downward gasifier approach to pyrolysis, we are not able to
add additional fuel on top of the pyrolysis layer.  Therefore, we
need the pellets or small briquettes to let it "breathe" from
the bottom.

Paul

At 09:43 AM 3/4/02 +0200, Zoli Bihari wrote:

> John, Paul and Stovers
>
> I'm asking myself, why should you pelletize the coffee husk? 
> It burns wonderfully as is, if you manage to keep 
> it in a thin layer on a grate. 
> That way, the naturally induced air can pass trough it 
> and you get a very nice fire. 
>
> By the way, you should mention what type of 
> coffee residue do you have. 
> In Kenya they have parchment, which is one of the inner 
> layers, and the M'Buni, which is the outer skin and flesh together. 
>
> Zoli 
>
> Zoli Bihari 
> R&D - Ormat Ltd. - Israel 
> Tel:   972 (8) 9433894 
> Fax:  972 (8) 9439901 
> E-mail: zbihari@ormat.com 
>
>
> > -----Original Message----- 
> > From: Paul S. Anderson [mailto:psanders@ilstu.edu] 
> > Sent: Sunday, March 03, 2002 9:42 PM 
> > To: John Olsen; stoves@crest.org 
> > Subject: Coffee husks as fuel 
> > 
> > 
> > John, 
> > 
> > I did not understand if you ALREADY are able to make and are actually 
> > making the briquettes from coffee husks.   Please  give more 
> > details.  We 
> > need to know about how much pressure OR if binders are needed OR 
> > output-of-heat results OR any other data about use of coffee husks. 
> > 
> > Also, do you mean briquettes in the "standard" sizes (ala 
> > Richard Stanley 
> > or ELK) or in the the larger "log-type" fuel units that your machine 
> > produces so well? 
> > 
> > Perhaps someone would volunteer to check on "coffee husks as 
> > fuel".   I 
> > would think that the major coffee producing countries would 
> > have looked 
> > closely at this issue. 
> > 
> > Paul 
> > 
> > At 10:28 AM 3/3/02 -0800, John Olsen wrote: 
> > >Paul said.............You identify Coffee bean husks.  If 
> > not already done, 
> > >work needs to be done on 
> > >making those husks (and sawdust and other stuff) into a "processed 
> > >fuel".................. 
> > >This area of commerce is an important part of my sales 
> > effortfor making 
> > >Briquettes from Biomass. 
> > >The coffee growers by using the husks as a briquette fuel, 
> > can roast the 
> > >coffee before export, instead of just exporting the bean. 
> > >regards 
> > >JohnO 
> > > 
> > > 
> > >

Paul S. Anderson, Ph.D.,  Fulbright Prof. to Mozambique 8/99 - 7/00

Rotary University Teacher Grantee to Mozambique >10 mo of 2001-2003

Dept of Geography - Geology (Box 4400), Illinois State University

Normal, IL  61790-4400   Voice:  309-438-7360;  FAX:  309-438-5310

E-mail: psanders@ilstu.edu - Internet items: www.ilstu.edu/~psanders