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 > hadnt 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: [email protected] > [mailto:[email protected]] 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: [email protected] > > ***************************************************** > 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 [email protected] > > 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 <[email protected]> > Reply-To: Discussion of biomass pyrolysis and gasification > <[email protected]> > Date: Fri, 3 Jun 2011 16:26:52 +0200 > To: 'Discussion of biomass pyrolysis and gasification' > <[email protected]> > 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: [email protected] > [mailto:[email protected]] 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: [email protected] > > ***************************************************** > 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 [email protected] > > 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 <[email protected]> > Reply-To: Discussion of biomass pyrolysis and gasification > <[email protected]> > Date: Fri, 3 Jun 2011 14:55:43 +0200 > To: 'Discussion of biomass pyrolysis and gasification' > <[email protected]> > Subject: [Gasification] Sawdust in Fan TLUD > > > > TLUD-ites, > > > > Does anyone have experience gasifying sawdust in a fan powered TLUD? > Continuous feed? > > > > Tom Miles > > > > _______________________________________________ Gasification mailing list to Send a Message to the list, use the email address [email protected] to UNSUBSCRIBE or Change your List Settings use the web page http://lists.bioenergylists.org/mailman/listinfo/gasification_lists.bioenergylists.org for more Gasifiers, News and Information see our web site: http://gasifiers.bioenergylists.org/
