[Gasification] Sawdust in Fan TLUD

[Harrie Knoef]

It is vey nice to see all the concervation on the last messages
Who is right or wrong?

One thing is for sure, Bjorn is still driving his own 
wood-fired car.
As many in Finland, Sweden, and also one now in the Netherlands

Thanks to Bjorn Kjelstom, and all others,


hARRIE

Hello Tom Miles,
> Mikael,
> 
>  
> 
> You have your priorities in the right order: soccer and family 
> should take
> priority over gasification and blogs.
> 
>  
> 
> Thank you for your very detailed explanation. Many of us know Bjorn
> Kjellstrom and appreciate his contributions to gasification. I 
> hadn’t heard
> about cyclone gasification for several years. It gave way to 
> fast pyrolysis
> using cyclones like in the Ensyn process. 
> 
>  
> 
> Congratulations on the sale to Pite. We will be watching your 
> progress with
> high ash-high alkali fuels. 
> 
>  
> 
> Kind regards,
> 
>  
> 
> Tom
> 
>  
> 
> From: gasification-bounces at lists.bioenergylists.org
> [mailto:gasification-bounces at lists.bioenergylists.org] On 
> Behalf Of Mikael
> Sjöblom
> Sent: Friday, June 03, 2011 3:16 PM
> To: Discussion of biomass pyrolysis and gasification
> Subject: Re: [Gasification] Sawdust in Fan TLUD
> 
>  
> 
> Tom,
> 
>  
> 
> Now I am back from the soccer training and all other commitments.
> 
>  
> 
> As you know our system  is named VIPP – Vortex Intensive Power 
> Process where
> the Vortex symbolizes the rotary movement that occurs in the reactor. 
> 
> 
> 
> 
> 
> The technology was originally developed by Professor Bjorn Kjellstrom at
> Lulea University of Technology (LTU) in Northern Sweden. He and his crew
> started to look at gas separation from bio fuels in a cyclone 
> shaped reactor
> in the early 90:th. In 1994 they developed a working prototype 
> which was in
> operation till 2004 when we acquired all rights of the technology.
> 
> 
> 
> 
> 
> The cyclone reactor is based on the Entrained Flow principle. One of the
> advantages of a cyclone shaped reactor is that the particle 
> treatment are
> already starting in reactor. The reactor is ceramic insulated with a
> proprietary ceramic composition to withstand heat and 
> mechanical wear. The
> temperature in the cyclone is approx. 850°C (1562°F) with 
> full load and is
> relatively evenly distributed. The fuel is fed into the reactor with
> preheated air (approx.85°C (185°F)) to Increase the 
> efficiency and increase
> the heating value of gas. In addition, there are no moving parts in the
> design, which means reduced costs.
> 
> 
> One possible drawback to this type of reactor is that it 
> requires relatively
> dry fuel (<15% moisture) and small fuel fractions (<1,5 mm (59 MIL)) but
> compared to other gasification technologies like e.g. CFB, 
> which can handle
> fuels with large fractions and higher moisture contents the 
> investment cost
> is very low.
> 
> 
> After we acquired the gasification technology we started the 
> work to develop
> a gas cleaning system. We where originally looking at the Dahlman system
> from the Netherlands, which seems to be effective, but due to very high
> costs we decided to make our own system based on conventional process
> technology with multi-cyclone, bio oil scrubber and wet electrostatic
> precipitator. This system ensures the particle removal efficiency to <5
> mg/Nm3. The bio oil in the scrubber circuit is recirculated until it is
> thickened. Thickened oil is bleed off and fed back to the 
> reactor where it
> is sprayed on with new biofuel. This is a closed online loop and we are
> adding a small volume of bio oil (RME) constantly. Using wood 
> fuel we are
> reducing the particle level from approx. 7 g/Nm3 after the 
> reactor to to <5
> mg/Nm3 after the cleaning system. The outlet gas temperature is 55°C
> (131°F).
> 
>  
> 
> Normally we are using soft wood, dried and grinded to the 
> specification we
> want, but we have carried out a number of fuel studies with 
> sugar bagasse
> and hard wood as well. Recently we made a fuel study with Red 
> canary grass
> which is a field crop. This specific fuel has a relatively high 
> ash content,
> around 6% and the ash melting point around 1100°C (2012°F). 
> The overall
> results was very good, the gas analysis showed around same 
> values as with
> wood and the heating value was around 5 MJ/Nm3, as with wood 
> fuel. As we are
> gasifying in a relatively low temperature we are handling 
> "difficult" fuels
> very well, even if the ash melting points are low. Also we have 
> no problems
> to handle high ash volumes. This autumn we will conduct a big fuel study
> with bark, peat moss, straw, torrefied wood and rice husks.
> 
> 
> We have developed and built an industrial rated pilot plant 
> that delivers
> 500 kW fuel power and which has been in operation for approx. 2000 hours
> since 2009. After very successful operating results the 
> technology has been
> verified by ETC in Sweden who are one of the worlds most 
> respected research
> and development centre for renewable fuels with focus on gasification.
> 
> We have taken our first commercial order of a full-scale systems to Pite
> Energi, a local energy company in Pitea in northern Sweden. The system,
> which will be commissioned in late September this year will 
> deliver 2.3 MWth
> and 1.3 MWe. The fuel used in this system is wood pellets. The
> engine/generator solution is delivered by Cummins Power Generation which
> will verify the engine model (QSV91) for approx. 5000 hours 
> before launching
> as a commercial model. 
> 
>  
> 
> The cost of this system is today 4,6 MUSD installed, which means 3,500
> USD/kWe. We are calculating with a price reduction down to approx. 3,000
> USD/kWe after the first ten (10) sold systems.
> 
> 
> There is a sales brochure to download at www.mevainnovation.se 
> where you can
> read more and see a picture of the pilot plant. I can't send it 
> to the list
> it as it's over 1 MB size.We are right now finalizing computer rendered
> pictures from the full scale plant as well of all big equipment 
> components
> which I can send later.
> 
>  
> 
> If you have additional questions please feel free to ask.
> 
>  
> 
>  
> 
>  
> 
> 
> Yours Sincererly
> 
> Mikael Sjöblom
> Marketing Director
>                                             
> 
> Sjögatan 13,
> S-852 34 Sundsvall
> SWEDEN
> Phone: + 46 (0)60 15 34 10
> Mobile: + 46 (0)70 572 73 30
> Internet: www.mevainnovation.se
> E-mail:  mikael.sjoblom at mevagroup.se
> 
> *****************************************************
> This email and any files transmitted with it are confidential
> and intended solely for the use of the individual or entity to
> whom they are addressed. If you have received this email
> in error please notify mikael.sjoblom at mevagroup.se
> 
> This email message has been virus checked by the virus
> programs used by Meva Group.
> ***************************************************** 
> P Please consider the environment - do you really need to print 
> this email?
> 
>  
> 
> From: Tom Miles <tmiles at trmiles.com>
> Reply-To: Discussion of biomass pyrolysis and gasification
> <gasification at lists.bioenergylists.org>
> Date: Fri, 3 Jun 2011 16:26:52 +0200
> To: 'Discussion of biomass pyrolysis and gasification'
> <gasification at lists.bioenergylists.org>
> Subject: Re: [Gasification] Sawdust in Fan TLUD
> 
>  
> 
> Mikael,
> 
>  
> 
> Your VIPP - Vortex Intensive Power Process looks  interesting. 
> There is not
> much to see on your website. (http://www.mevainnovation.se/ ) 
> Do you have
> product and system brochures? Is this based on university research?
> 
>  
> 
> I'd be interested to know what scale you have built, how long 
> you have run
> and what fuels you have gasified. The website says that you are 
> targeting
> 1-2 MWe. 
> 
>  
> 
> What are the fuel specifications? <6 MM? 10% MC?
> 
>  
> 
> Can you handle high as fuels such as ground wheat straw? 4-8% 
> ash with more
> than 0.5 kg/GJ alkali (K20+Na2)?
> 
>  
> 
> A system to handle ground straw would be very useful. Can you supply a
> turnkey system for USD $3,000/kWe or less?
> 
>  
> 
> Thanks
> 
>  
> 
> Tom
> 
>  
> 
> From: gasification-bounces at lists.bioenergylists.org
> [mailto:gasification-bounces at lists.bioenergylists.org] On 
> Behalf Of Mikael
> Sjöblom
> Sent: Friday, June 03, 2011 6:52 AM
> To: Discussion of biomass pyrolysis and gasification
> Subject: Re: [Gasification] Sawdust in Fan TLUD
> 
>  
> 
> Or you can as we do, gasify fine sawdust in a cyclone reactor.
> 
>  
> 
> 
> 
>  Yours Sincererly
> 
> Mikael Sjoblom
> Marketing Director
> 
> Meva Innovation AB
> 
> Sjögatan 13,
> S-852 34 Sundsvall
> SWEDEN
> Phone: + 46 (0)60 15 34 10
> Mobile: + 46 (0)70 572 73 30
> Internet: www.mevainnovation.se
> E-mail:  mikael.sjoblom at mevagroup.se
> 
> *****************************************************
> This email and any files transmitted with it are confidential
> and intended solely for the use of the individual or entity to
> whom they are addressed. If you have received this email
> in error please notify mikael.sjoblom at mevagroup.se
> 
> This email message has been virus checked by the virus
> programs used by Meva Group.
> ***************************************************** 
> P Please consider the environment - do you really need to print 
> this email?
> 
>  
> 
> From: Tom Miles <tmiles at trmiles.com>
> Reply-To: Discussion of biomass pyrolysis and gasification
> <gasification at lists.bioenergylists.org>
> Date: Fri, 3 Jun 2011 14:55:43 +0200
> To: 'Discussion of biomass pyrolysis and gasification'
> <gasification at lists.bioenergylists.org>
> Subject: [Gasification] Sawdust in Fan TLUD
> 
>  
> 
> TLUD-ites,
> 
>  
> 
> Does anyone have experience gasifying sawdust in a fan powered TLUD?
> Continuous feed?
> 
>  
> 
> Tom Miles
> 
>  
> 
>