[Stoves] POTASIUM basics

[Frans Peeters]

Paul,

 

   Black soot wil be  tar from a dense hydrocarbon pek like sapin trees
,containing 13% .polyphenols till > 7  kekul rings .

KOH   and       K2CO3 under 400° C will act as fire extingwisher !

Mixing with rice huls make the % disturbers are lower .

K2SiO3 is water soluble! Good for plants like bamboo what needs 5% Si
fertliser ;

K is needed for large fruits like big patatous !

Steamcoocking gives 13% loss of K .      Water coocking much more .!

We need 2500 milli gram K / day in our food .

Mind 

K transport is partly a slepping particles transport by CO2 gas flow..

KOH can move and condense 10 cm higer in a reactor .or chimney . Polyphenols
5m high .

Stainless steel Nickel oxydes dissolve by KOH in yellow salts .

Purple flame is K , if not over yellow from Na .

 

Regards

Frans

 

 

 

Frans,

You say that 

K transport is not called gasform but migration as airosol particles .smog
alike. 


Does this explain the presence of black soot in the syngas?
The black soot disappears when coffee husks are gasified along with rice
hulls.
In the reactor, does K in the coffee husk react with silica in the rice hull
to form potassium silicate?
Does this explain the disappearance of the soot?

Thanks.
Paul



On Mon, Oct 17, 2011 at 5:35 AM, Frans Peeters <peetersfrans at telenet.be>
wrote:

Paul,

 

   You start thinking of an analysis figure in feriliser ! Expressed in an
old way : K2O. Not the real state !!

Potasium in general : ash 10-20 % but comming from 5% ash in the biofuel
.You end up with 10%from 5% =0,5 % from the fuel ,as exemple .

Fe2O3 stays Fe2O3 but K2Obecomes fast KOH with H2O from  the air!
Hygroscopic at room temperature ..

K into fuel wil go over KOH to K2CO3 or stronger  SO4—PO4--- Cl- F -SiO3 –
salts if  those radicals are present ..

K transport is not called gasform but migration as airosol particles .

smog alike. Not K2O but KOH or KOH.xH2O under 400° C

Now you got the better info for 400-800° C    (My fusion =400 ° C )

But mind the KOH at your 170° C  is a flame extigwisher .. Fe2O3 is not 
.

KOH in the flame explodes and gives your horizontal flame splitting .

Suggestion :aspiration of the CO2 off gas in a fumehood  ( by 800° C ) plus
water nebulation afterwards wil recuperate the  valuable potasium.and
protect your lungs and nose .

 

Frans

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