[Stoves] Smokeless transition

Jock Gill jock at jockgill.com
Fri Dec 12 07:33:14 CST 2014



Jock Gill
P. O. Box 3
Peacham, VT 05862

google.com/+JockGill

Extract CO2 from the atmosphere!

> On Dec 12, 2014, at 4:01 AM, Marquitusus <marquitusus at hotmail.com> wrote:
> 
> Hi Stovers,
> 
> There is a point in the TLUD process that I find specially difficult to understand and control: the transition from wood gasification to char gasification. Maybe you can help me to do it.
> 
> At this point,  when the hydrocarbon fuel is near to finish, my experiments with almond husks as fuel for ND-TLUD shows 2 possible endings:
>            1- The flames in the burner turns to blue color (due to high CO presence in gases) and the char pyrolisis continues until ashes. No smoke present.
>            2- The flames in the burner extinguishes and the smoke appears.
> 
> I made a lot of tests, with variations in ND-TLUD design (riser height, quantity of primary and secondary air, type of concentrator, etc.)  and still I'm not able to say which factor combination is the answer for a smokeless transition. Sometimes I have smoke, and sometimes I don't. 
> 
> I suspect the answer has to do with chemical fuel composition, as when I use wood pellets, almost never have smoke.
> 
> So this is the point where I am today. When char gasification begins, I have to lower the primary air? Lower the secondary air? How I can ensure the flame won't extinguish?
> 
> It would be very useful for me to read your comments about this.
> 
> Thanks very much,
> 
> Marc
> 
> 
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