[Gasification] Getting both heat and char ..... was Re: Where is Everyone?

Wed Jan 4 18:19:50 CST 2017

Use preheating primary air for good combustion and clean burn. This should be controllable from rich to lean burn. I'm aware of enough about ceramics to know you need that control. A  blacksmiths shows sometimes have guys who specialize in building custom burners for forging. Call the local blacksmith association. 

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"Energies Naturals C.B." <energiesnaturals at gmx.de> wrote:

>
>Dear Paul, Doug and others,
>
>to answer some questions:
>I live and work in Mallorca,Spain, where we would set up a test rig.
>
>The kiln is not jet built, but we would try to find something siutable in existing ceramic
>factories on the spanish mainland, close to both granite and/or slate residues and biomass.
>
>This 1. application is about the great devellopement of a friend of mine, a ceramist.
>She invented a process to use the thousands of tons of hazardous waste from granite quarries,
>like cutting and grinding sludges and others to make a high quality ceramic which has granite qualities
>but is designable as porcellane.
>
>She also invented a process for the huge amount of waste (95%!) in slate production to convert it into
>a slate which is mouldable,hard, water proof and can be provided with nailing holes or other kinds of hooks.
>
>Both are also apt for other uses.
>
>The thing is that both need high temperature and would benefit from oxidative/reductive baking.
>
>In the actual economical context of Spain, she could not find any manufacturer willing to venture into
>this, surely partly due to lack of imagination and of course lack of knowledge about high temp.biomass firing!
>
>She doesn't have the capital to solve either, so I offered myself to find information on the list.
>
>I strongly believe in her process and am sure the products will find a place in the market.
>( a hard, frostresistant slate ready to "nail on" would be great!)
>
>Could someone else be interested in joining us/her? We are honest folks (rare species)...
>
>What I have is an old open core downdraft for almond shells used on a 70 hp Dodge during or after WW2.
>
>That sounds like 200 kW/th or more, right?
>
>What I need for first trial would be a burner to achieve the necessary high temperature.
>
>I could find or build a simple kiln to make some trials .
>
>Any suggestions?
>
>Thanks for your interest
>
>Rolf
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>On Wed, 4 Jan 2017 13:33:30 +1300
>Doug <doug.williams.nz at gmail.com> wrote:
>
>> Hi Paul and Rolf,
>> 
>> Pyrolytic  gas can be quite wet so precise temperatures are risky to 
>> quote. What I can tell you from experience, is that it always burns 
>> hotter than clean producer gas, upwards of 1,050C, a basic tar test for 
>> cleaner specification gas, 13-1500C is a rough rule of thumb for gas 
>> exiting the combustion chamber. It has a very high radiation factor 
>> useful for refractory application, but the price for this is that you 
>> will get a high ash content in the kiln and flue dust emissions.
>> 
>> The actual combustion is complex, but achievable in a non regulated 
>> situation, emissions being the issue, both dust and toxic gas CO,CH4, 
>> and Dioxins. Combustion of these gases have been our focus for some 6-7 
>> years, and current work at CalForest in California, is to use this gas 
>> to dry the incoming fuel to the charmaker.
>> 
>>   Might be able to offer more later as you develop the concept.
>> 
>> Doug Williams.
>> 
>> On 04/01/17 12:20, Paul Anderson wrote:
>> 
>> > Rolf,
>> >
>> > I am responding to your two messages that are repeated below.
>> >
>> > I am definitely with you on this matter of making heat AND making 
>> > char.   I have lots of experience with small scale devices, and 
>> > moderate experience up to 200 kW thermal.
>> >
>> > Yes, BOTH the heat and the char are important, and help to pay for the 
>> > other one.
>> >
>> > Before taking the discussion off-list, could you please tell all of us 
>> > about your needs and about your resources.   No solution is free from 
>> > the development costs.   Does the kiln already exist (or is that 
>> > another cost to be covered?)   And we want to find out who else has a 
>> > "burning" interest in this.   (This was 2/3rds of  a pun.   2/3rds 
>> > is   P   U  ; as in pew!!)  (With full respect for the non-native 
>> > English speakers on this listserv, here is then meaning of the joke:
>> >> Wordwizard • View topic - *PEW* !! whats that?? 
>> >> <http://www.wordwizard.com/phpbb3/viewtopic.php?p=63421>
>> >> http://www.wordwizard.com/phpbb3/viewtopic.php?p=63421 mj (a.k.a. 
>> >> Michael), The word *PEW*! has been around a bit more than decades ( 
>> >> see ... 2) [1859] Expressing disgust at an unpleasant *smell*.
>> >
>> > And where it happens does make a difference, such as with labor costs. 
>> >   You are in Mexico.   In what part?   Plenty of dry biomass??  Please 
>> > send info.   Okay if in Spanish (I can read that, and if others 
>> > cannot, we will cross that bridge when necessary).
>> >
>> > Do you know Noel C. of forestry in Mexico?   Could this become a 
>> > Mexico project?
>> >
>> > Question for everyone:  When "woodgas" (pyrolytic gases) come off of 
>> > the biomass, what is the highest temperatures at which they can be 
>> > burned?   That would be with stochiometric combustion, right? Just the 
>> > right amount of air.
>> >
>> >
>> > Paul
>> 
>
>
>-- 
>Energies Naturals C.B. <energiesnaturals at gmx.de>
>
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