[Stoves] wheat husk pellets
Paul Anderson
psanders at ilstu.edu
Tue Jun 11 08:19:39 CDT 2013
Tom,
My quick look at Cabela's site did not turn up any pellet or briquette
maker. Please provide a link.
Paul
Paul S. Anderson, PhD aka "Dr TLUD"
Email: psanders at ilstu.edu Skype: paultlud Phone: +1-309-452-7072
Website: www.drtlud.com
On 6/11/2013 7:25 AM, Tom Miles wrote:
>
> The world is full of failed densification systems. You don't have to
> go all the way to a high density (35 lb/ft3) fuel pellet. Put the
> crumbled cake through a meat grinder with a large sieve and dry out
> the pellets. Make's a great fuel. $1,000 from Cabela's. It's a mini
> version of Richard's press. There are Chinese versions of course.
>
> Tom
>
> *From:*Stoves [mailto:stoves-bounces at lists.bioenergylists.org] *On
> Behalf Of *mtrevor
> *Sent:* Tuesday, June 11, 2013 4:25 AM
> *To:* Discussion of biomass cooking stoves
> *Subject:* Re: [Stoves] wheat husk pellets
>
> I absolutely agree with you right down the line, however I am
> generally the odd man out.
>
> The only pelleting machine they had here was in the copra mill for the
> cake.
>
> It was phased out years ago Now they just move bulk crumble. Even
> though you do not approve
>
> the crumbled cake burned nicely in my XL woodgas stove.
>
> There is no coir dust as the is no industrial processing of husks.
> Beside the husks are spread ove an area
>
> maybe 1/3 of the entire United States
>
> there is a very small scale briquetting operation based on one of
> Richard Stanley's
>
> lever press and scrap paper at the local waste company. Effective
> processing of biomass waste would be important
>
> but its limited diffuse distributed nature makes this nearly impossible.
>
> There are some real challenges involved here.
>
> Michael N Trevor.
>
> .
>
> ----- Original Message -----
>
> *From:*Paul Olivier <mailto:paul.olivier at esrla.com>
>
> *To:*Discussion of biomass cooking stoves
> <mailto:stoves at lists.bioenergylists.org>
>
> *Sent:*Tuesday, June 11, 2013 8:29 PM
>
> *Subject:*Re: [Stoves] wheat husk pellets
>
> Michael,
>
> Can you access pellets in the Marshal Islands?
>
> Do you have coconut dust in the Marshal Islands?
>
> Coconut dust is in an ideal powder form for pelletizing,
>
> and it contains a lot of lignin that should serve as a natural
> binder.
>
> I would urge funding agencies to get involved in the finance of
> pellet machines throughout the world.
>
> Funding agencies should also be investing heavily in biochar research.
>
> When farmers understand the value of biochar, it will acquire value.
> Its sale will cover the cost of making pellets.
>
> Once again, fuel preparation is critical.
> Imagine where the coal industry would be without coal preparation.
>
> There are a lot of bad fuels out there, such as coconut dust, that
> need to be prepared.
>
> Paul
>
> On Tue, Jun 11, 2013 at 2:44 PM, mtrevor <mtrevor at ntamar.net
> <mailto:mtrevor at ntamar.net>> wrote:
>
> Dear Paul
>
> If you start making this unit please advise.
>
> Thank you
>
> Michael N Trevor
>
> Majuro
>
> Marshall islands
>
> .
>
> n
>
> ----- Original Message -----
>
> *From:*Paul Olivier <mailto:paul.olivier at esrla.com>
>
> *To:*Discussion of biomass cooking stoves
> <mailto:stoves at lists.bioenergylists.org>
>
> *Sent:*Tuesday, June 11, 2013 6:54 PM
>
> *Subject:*Re: [Stoves] wheat husk pellets
>
> In my previous email I concluded by saying:
> /What's needed above all else, in my opinion, are small,
> beautiful TLUD's that make use of pellets. Such units could be
> situated in modern kitchens throughout the world. Once these
> units are in place, the rest will follow./
>
>
> It seems that Home Depot, Wal-mart, Lowes, Ace, Agway and many
> others large retailers in the USA all carry wood pellets. Why
> can we not make TLUDs that make use of these pellets as fuel?
> The only thing that changes is the height of the reactor: it's
> much less than the height of a reactor that uses undensified
> biomass. This means that the TLUD is small, lightweight,
> mobile and much cheaper.
>
> Here is an example of what I am talking about:
> https://dl.dropboxusercontent.com/u/22013094/150%20Gasifier/Short/DrawingsUltra/001.pdf
> The total height of the reactor is less than 10 inches.
>
> This reactor holds about 2 kgs of pellets.
>
> This gives a burn time of about one and a half hours.
>
> The reactor itself in 304 stainless steel weighs less than 1.5
> kgs.
>
> We've already tested taller TLUDs on rice hull pellets,
>
> and they emit the same beautiful blue flame as when loose
> rice hulls are used.
>
> Another big advantage of pellets is that there is much less
> particulate matter emissions compared to loose rice hulls.
>
> Loose rice hulls are dusty, messy, bulky and a real nuisance
> to store and load.
>
> In an urban setting it makes no sense to be hauling in loose
> rice hulls of a bulk density of only 80 kg/m3.
>
> If we're going to compete with fossil fuel gas, we've must
> reach a certain level of convenience and ease of use.
>
> Thanks.
>
> Paul
>
> On Tue, Jun 11, 2013 at 6:11 AM, Paul Olivier
> <paul.olivier at esrla.com <mailto:paul.olivier at esrla.com>> wrote:
>
> See comments below.
>
> On Mon, Jun 10, 2013 at 7:01 PM, Crispin Pemberton-Pigott
> <crispinpigott at gmail.com <mailto:crispinpigott at gmail.com>> wrote:
>
> Dear Paul O
>
> The reason is economics.
>
> In may cases transport distances are short, and the economics
> are quite good, and yet we complacently continue to burn
> fossil fuels. I lived for over 20 years in West Flanders in
> Belgium where wheat fields encroached upon densely populated
> rural areas, and yet everyone merrily burned LPG gas to cook a
> meal. Later I move to Waxahachie, Texas, a small town near
> Dallas, and once again, wheat fields were everywhere. Yet no
> one dreamed of making wheat husk or wheat straw pellets and
> using them to make syngas to cook a meal.
>
>
> China is showing at the moment that the maximum radius
> that is viable to transport pellets/briquettes is 150 km.
>
> China appears to be struggling with a lack of infrastructure
> in getting pellets to market. How does one explain the
> economics of shipping coffee husk pellets from Brazil to
> Holland as we see in this link?
> http://www.coffeehabitat.com/2007/10/coffee-husks-as/ This is
> a thoroughly bold undertaking, but does it make sense to
> transport coffee husk pellets half way around the world to
> provide fuel for Dutch power stations? Why not make use of
> these pellets in Brazil? Also, one might argue that the
> highest and best use of coffee husk pellets would be, not to
> burn them in huge power stations, but to generate from them a
> syngas that would replace bottled gas or other forms of fossil
> fuel gas. The biochar left over from these stoves would then
> be returned to the soil.
>
>
> $76 a ton is cheap by Canadian standards but far higher
> than the price of coal per delivered MJ.
>
> Not always so. Vietnamese coal coming from the north costs
> more per delivered MJ than rice hulls pellets.
>
> In Vietnam there is a huge multi-billion dollar infrastructure
> that underlies the mining, preparation and transportation of coal.
>
> This infrastructure does not yet exist for waste biomass pellets.
>
>
> Agri-waste pellets are a nice fuel provided they have been
> prepared properly.
>
> The same applies to coal and all other fossil fuels.
>
> Coal preparation is a gigantic and complex undertaking.
>
>
>
> If the value of char is 'always there' it is quite
> possible the economic equation will change with the
> introduction of gasifiers, however the same energy
> production rate will increase the demand for transport and
> raw husk supply.
>
> Yes, you are right. The introduction of pellet gasifiers in a
> given area will create a demand for pellets, and the demand
> for pellets will stimulate the construction of the
> infrastructure needed to meet this demand.
>
>
> You know all this. How about giving us an equation or
> spreadsheet that includes the whole value chain?
>
>
> Stovers could plug in their local costs and make a
> comparison between options. In at least /some
> /circumstances the gasification route would be the most
> viable.
>
> Instead of using the word "some". I would prefer to say "many".
>
>
> The UK buys wood pellets from Canada to burn in power
> stations, but that is subsidized by pensions grannies and
> the working poor.
>
> Once again, why haul pellets from Canada to the UK? Does the
> UK not have an abundance of agricultural waste? And once
> again, should we not focus more on producing syngas from
> pellets and directly using this syngas to cook a meal? Burning
> pellets to make electricity is surely not the wisest way to
> proceed, especially if this electricity is used as a source of
> energy to cook a meal. Why not bypass the power station
> altogether?
>
> What's needed above all else, in my opinion, are small,
> beautiful TLUD's that make use of pellets. Such units could be
> situated in modern kitchens throughout the world. Once these
> units are in place, the rest will follow.
>
>
> Regards
> Crispin
> >From BB9900
>
>
> -----Original Message-----
> From: Paul Olivier <paul.olivier at esrla.com
> <mailto:paul.olivier at esrla.com>>
> Sender: "Stoves" <stoves-bounces at lists.bioenergylists.org
> <mailto:stoves-bounces at lists.bioenergylists.org>>
> Date: Mon, 10 Jun 2013 15:19:20
>
> To: Discussion of biomass cooking
> stoves<stoves at lists.bioenergylists.org
> <mailto:stoves at lists.bioenergylists.org>>
> Reply-To: Discussion of biomass cooking stoves
> <stoves at lists.bioenergylists.org
> <mailto:stoves at lists.bioenergylists.org>>
> Subject: [Stoves] wheat husk pellets
>
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>
> --
> Paul A. Olivier PhD
> 26/5 Phu Dong Thien Vuong
> Dalat
> Vietnam
>
> Louisiana telephone: 1-337-447-4124 (rings Vietnam)
> Mobile: 090-694-1573 (in Vietnam)
> Skype address: Xpolivier
> http://www.esrla.com/
>
>
>
>
> --
> Paul A. Olivier PhD
> 26/5 Phu Dong Thien Vuong
> Dalat
> Vietnam
>
> Louisiana telephone: 1-337-447-4124 (rings Vietnam)
> Mobile: 090-694-1573 (in Vietnam)
> Skype address: Xpolivier
> http://www.esrla.com/
>
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>
> --
> Paul A. Olivier PhD
> 26/5 Phu Dong Thien Vuong
> Dalat
> Vietnam
>
> Louisiana telephone: 1-337-447-4124 (rings Vietnam)
> Mobile: 090-694-1573 (in Vietnam)
> Skype address: Xpolivier
> http://www.esrla.com/
>
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>
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