Welcome to European Tribune. It's gone a bit quiet around here these days, but it's still going.
Here is an (interesting to me)web site on Alt fuels:

DME is at the bottom:


Also, there was a diary at Kos on Sunday on cellulose alcohol from the willow-poplar-aspen complex:


I'm betting my piggy bank on cellulose ethanol;perhaps it could even be a feed-stock for DME.

If history is any guide to the future, I may be right:


Or not.

"When the abyss stares at me, it wets its pants." Brian Hopkins

by EricC on Tue Jan 16th, 2007 at 11:54:57 AM EST
beat me to it!

exciting this willow thing, huh?

does it come close to sugar cane in yield?

'The history of public debt is full of irony. It rarely follows our ideas of order and justice.' Thomas Piketty

by melo (melometa4(at)gmail.com) on Tue Jan 16th, 2007 at 01:06:45 PM EST
[ Parent ]

I bet a dedicated tinkerer like Ford or Edison would pace the floor a bit at night contemplating the possibilities.

Way we do paper here:

Trees are often chipped in situ on the logging site, chips hauled by big trucks  as much as 80 miles, and the paper companies haven't gone under yet.

Here is a glimpse at the EricC and Kissinger Assosiates pilot energy project:

1.Willow pulp run thru bleaching process;80%+-black liquor extracted; DME or DTs produced as an end product, depending on end user preference.

2.Pressed pulp loaded on large conveyor belts by DME powered loaders.

3.Pulp air dries in a large solar kiln and is fed into an electric generating plant boiler 10 miles from the liquor distillery.

"When the abyss stares at me, it wets its pants." Brian Hopkins

by EricC on Tue Jan 16th, 2007 at 02:42:36 PM EST
[ Parent ]

If ethanol were readily available, there would be no compelling reason to make DME from it.   Ethanol, unlike methanol, is not that toxic at least diluted.  One might get drunk from contaminated water supplies but not blinded.

I hear a lot about ethanol, but I'm either agnostic or skeptical.   The downside is always going to be the lack of a continous process - the necessity always of having a batch process - and the water intensity.

I think supercritical water oxidation (SWO) of biomass would be a superior idea to fermentation - if we want to have biomass derived fuels.   This idea lends itself to DME.

SWO would probably also be batch processing, but reactor time would be much shorter.   It also affords excellent opportunities for cogeneration.

by NNadir on Tue Jan 16th, 2007 at 02:45:35 PM EST
[ Parent ]
I was just dropping another link, up there.

I'm sure the heated water from a reactor could be used to  to do a lot with biomass.

Be interesting to run a BTU analysis on air dried paper pulp too.

I think all the production metods are going to be involved in some proportion, coal being the dirtiest major at this point.

"When the abyss stares at me, it wets its pants." Brian Hopkins

by EricC on Tue Jan 16th, 2007 at 03:19:43 PM EST
[ Parent ]


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