<div dir="ltr"><div>Hi Doug, thank you for the information, and yes I remember the "Eco-Puck" ... I was hoping to not go this route, however times have changed, and wood gathering is somewhat harder on the back, than it was even a year ago, was simply looking to other options, that even though more costly on the ROI side, would be easier on the body.</div><div><br></div><div>I think you (and tom) have snapped me back into reality. we will have to see.</div><div><br></div><div>thanks for the great information.</div><div>Greg</div></div><div id="DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2"><br>
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</table><a href="#DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2" width="1" height="1"></a></div><div class="gmail_extra"><br><div class="gmail_quote">On Tue, Dec 26, 2017 at 3:18 PM, Doug <span dir="ltr"><<a href="mailto:doug.williams.nz@gmail.com" target="_blank">doug.williams.nz@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Hi Greg,<br>
<br>
Tom has covered the issues of straw gasification, and certainly liquefied ash, and sintered clinker are an issue not easily overcome if you just want to make gas. The issue always remains in that raw straw can end up passing through, to then add their condensible volatiles to the end gas.<br>
<br>
You may remember that we cubed flax, straw, and hemp for trials in Winnipeg using a rather big vertical rotary machine. It was at least a solution to being able to get the volumes reduced, but for sure conventional gasifiers of most designs just do not incorporate the appropriate factors to control the low velocity air and fast moving fuel. If you hold the fuel it will slag, so to me, the first thing I would do is:<br>
<br>
1. Establish first how thick the bed can be with your cubed fuel on a horizontal high porosity grate plate (or other).<br>
<br>
2. With various flows, I would want to see if I could function with the thinnest bed possible, allowing for the lowest air velocity, and minimal ash problems.<br>
<br>
3. If you do this in the open air, watch the smoke generation and time the colour changes, you know it explains the state of pyrolysis.<br>
<br>
Downside.<br>
<br>
1. Cubing is high energy consumption adding to fuel cost, unless you can generate power from the gas you make.<br>
<br>
2. The output char, if that is the target, will need very careful airtight storage, plus a way to move it about in considerable volume. Very hazardous to health.<br>
<br>
3. You still have to design on a scale that your fuel test information will set in "stone".<br>
<br>
Hope you keep us informed on your progress as I am sure others will have more to contribute (as we do!)<br>
<br>
Regards,<br>
<br>
Doug Williams.<br>
<br>
Fluidyne.<span class="im HOEnZb"><br>
<br>
<br>
On 27/12/17 05:57, Greg Manning wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Greetings Doug and list,<br>
<br>
I hope all is as well as can be as we all age like fine wine.<br>
<br>
In the interest of the original post about straw gasification, I am going to attempt a sample run in my latest unit out of curiosity, I think going the route of cubed wheat straw would be the way to go, what are your thoughts on this ?<br>
<br>
Greg Manning<br>
<br>
<br>
</blockquote>
<br>
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