Drizzler grateless gasifier duration test 6th attempt 27.5 hours!!!

Рет қаралды 4,612

6 жыл бұрын

In my grateless DrizzleR gasifier design it was not easy to maintain the reduction stable and in place. I have tackled that problem in previous video's and now I am fighting the "packing" problem. I am doing constant modifications to my system and in this video I changed the agitator. Made him agitate in very little tiny "schocks" With good results I managed to stress the total automatic run time now to 27.5 hours. Mind you in all this time the whole process went on completely automatic and i have not touched the gasifier not one single second.

Пікірлер: 37

@sammig1059 6 жыл бұрын

I´m grateful that you share your work with the Drizzler. Very inspiring. I am in the learning prosses and hope to start building my first small gasifier later this year.

@FilterYT 5 жыл бұрын

This has been a great series, I'm looking forward to more videos! I really like how you are using sensors and controllers to really understand what is happening with your project. The problem of dynamically controlling the reduction zone is really fascinating. You guys are doing so well, thanks again for sharing!

@usamoli 2 жыл бұрын

excellent results !.... looking forward to start a gasifier project🤚🙏🙏

@mazdalorean 6 жыл бұрын

Congratulations on a well deserved successful run. I too have experienced the unfiltered blue flame from a deep bed of char. I wouldn't have believed it if I didn't see it with my own eyes. I think you almost have to have 2 paths for the gas to go so you can periodically inspect the plumbing on the side that has run for 24 hours while you switch to the clean side. You may even be able to incorporate an automatic flame cleaning of the interior of the pipes so things can still be considered untouched. I'll be interested to see where it goes from here. Thanks for the great show. Joe

@theDriZzleRGasifier 6 жыл бұрын

Joe, thank you, but your Ninja is a well thought off design also.

@nhhbbyloggr5022 6 жыл бұрын

Excellent results. You are leading the way with your design and those long runs are the proof. Thanks for sharing it with us.

@theDriZzleRGasifier 6 жыл бұрын

Thank you. Do not be modest. You are doing great things also.

@nhhbbyloggr5022 6 жыл бұрын

Each of us is on the pathway of discovery. That is the reason we keep going. How do you keep the ember bed " fluffed" ? I have noticed with mine that after the initial startup more often than not, the gasifier has a modest puff-back which seems to fluff up the ember bed ad make for a better run. The draw back m which I just discovered is that it also sends some char up into the air intake where it accumulates over time causing an air flow restriction. Now that I know it happens it becomes part of the maintenance schedule. Keep up the good work !

@theDriZzleRGasifier 6 жыл бұрын

Hobby, I have no grate, that makes my system a bit different from a traditional gasifier design. In my grateless I must be very careful not to disturb my reduction or else my charcoal mass will sinc away immediately. I found in my system that keeping the reduction in place and at the same time open, greatly depend on how fast I react when my reduction starts to pack. Therefor this expensive under pressure sensor. Whatever you use, a grate shaker or a turning or tilting grate or any other device that sits in your reduction to shake off exes dust is less important. The main thing is to get your shaker to react at even the least bit of pressure drop. This way your shaker has to move very little and very gentle but very often. In my test the agitator worked practical constant but exstreme gentle. That explains also the nice flare. By hard shaking you produce a big cloud of charcoal-dust that goes through your system. This can lead to temporally disturbing the gasflow or bottlenecking it and gives you a dirty charcoaldust loaden flare. Sometimes even raw gas with some tar in it can slip through.

@nhhbbyloggr5022 6 жыл бұрын

Your description of what goes on when the grate is shaken vigorously makes a lot of sense. There have been times when I would closely monitor the manometers and as the applied vacuum increased slightly from packing , I would slightly move the grate and the manometer would settle back to its sweet spot. Even now with the timers controlling the grate shaker, the movement is more like an oscillation than a shake due to the slow turning of the wiper motor. That seems to work ok for awhile and then the packing of the char gets too much and the wild swings begin...like a death wobble. I will change the timer frequency rate to have the shaker come on much more often to see if that keeps it under control. Thank you for the explanation and the insight as to what goes on in the heart of the beast. I think we all have an idea of what happens but it needs to pass evaluation from another source to confirm what we suspect.

@nhhbbyloggr5022 6 жыл бұрын

I liken this to " shaking the baby to keep quiet ". What you are saying , and I agree with, is all of our filtration, scrubbers, water baths are added on in order to compensate for " over stimulated or excessive force" disrupting the ember bed column. The very subtle differences in under pressure holds the key to the success and stability of the run. This , in my opinion , is the " silver bullet".

@CNCmachiningisfun 6 жыл бұрын

That is *Absolutely Fantastic* Very well done indeed. You really are leading the way with your gasifier designs :) .

@theDriZzleRGasifier 6 жыл бұрын

Thank you, appreciate the complement from an good hands on gassifier guy as yourself.

@AIM54A 6 жыл бұрын

Great to see a new video up! Congrats on the progress made.

@theDriZzleRGasifier 6 жыл бұрын

Gratefull your arre intrested.

@UrbanSoundAtSbcGl Жыл бұрын

The Drizzler cracking temperature is correct. The deeper combustion / oxidation zone is consuming excess water produced by combustion, resulting in water-gas shift reaction, creating an increase in exothermic hydrogen, oxygen and CO conversion, less Co2. If you pass the final gas through a bed of fine copper turnings as a catalyst you will further decrease NO(x) and produce still more CO. This reaction is the reason you see some pink showing up in the flare. If you divert the flaring heat partly back to the combuster, (exhaust gas re-circulation (EGR)) you'll be able to turn down the air flow some and fuel consumption slightly without loss while increasing the residence time to support continued cracking. If you're running pine pellets, you've made out well. Watch the moisture content. If you want to run cheaper, lower grade pellets with higher moisture, increase the EGR and air flow to convert higher moisture levels. Watch for metal oxidation on the downstream side as most wood will produce SOME chlorine and also sample the gas through a collection of cotton filters, hydrate them and check the PH so you know where that stands, augment the fuel with additive to adjust it. Also, keep in mind the diameter of your combuster is directly relative to the thermal transfer among the pellet stack pre-heating. If you increase or decrease the combuster diameter relative to the pellet size you can optimize this benefit. Go too far either way, you lose pre-burn gasification. Try 1-2 percent iron filings with the pellets and watch what happens. Iron filings are usually cheep and produce considerable thermal product, very nice. :) If cost of fuel and maintenance are a significantly lower cost than commercial heating, you may have a winner. 12 hour service factor is not uncommon but also not very demanding. Consider flaring to an enclosed sand bed to store high temperature heat which will let you cycle or idle the gasifier to lowest operating condition between demands. A sand bed is VERY cheap and can store an enormous amount of BTU at 600 F without oxidizing metal pipes, to support residential heating. Use enclosed 10/50 glycol water as the exchange transition to avoid hot air gas leaks into residence. The gasifier may suffer tar production during start-up, but designed well you can discharge this to a start-up tar/pitch collection path which is handy (and can be re-burnt later). Now all you need is a healthy Sterling engine to offset some electrical cost. LOL Good luck, nice project. Mike

@bobbylong4443 Жыл бұрын

Beautiful

@FredMiller 6 жыл бұрын

Congrats on your long burn. Please keep us up to date with your progress and best of luck for future research.. Fred Ontario, NY

@theDriZzleRGasifier 6 жыл бұрын

Fred, thank you and also for being intrested so lang already in my gasifier adventures.

@ralfgottfridhansson3127 6 жыл бұрын

Very good results

@theDriZzleRGasifier 6 жыл бұрын

Ralf, Thank you, I am pleased myself. Now up to 50 hours continious run!

@neilmunro106 6 жыл бұрын

Really significant progress, well done! Would be interested to see your new agitator if you are able to with your next video.... Thanks Neil

@theDriZzleRGasifier 6 жыл бұрын

Niel, As I already saw the limits of my new agitator there will be bound to be another new one in the next video.

@mada94fxr 6 жыл бұрын

Excellent. What a beautiful unfiltered flare. 27.5 hours straight. Awesome. I don't even have enough wood chunks to go that long. But, I am working on it.

@theDriZzleRGasifier 6 жыл бұрын

Thank you. Yes fuel preparation can be a pain. Fortunatly a DriZzleR can eat everything. Chunks but also pellets and that makes long hours testing more comfortable.

@mada94fxr 6 жыл бұрын

For some reason, my gasser does not like pellets. I think it is the Florida humidity getting the pellets moist and causing lots of tar. The oak chunks work really well and it is available everywhere. I just have to harvest the branches and chunk them. I'm building up my stock over time.

@theDriZzleRGasifier 6 жыл бұрын

Well that is the benifit of our opentop drop feed gasifier, the DriZzleR. It will gasses all kind of wood because the lack of a wood bunker or hopper or fuel amount above the flaming pyrolise zone. The dominant flaming pyrolise zone will inmediatly dry and degasses the dropped in llitte peices of fuel, werther it be pellets, mikrochips, chunks or even branches. In a closed gasifier, or a hopper system the moisture of the wood at the drying zone crawls up into the feedstock above and decomposes the pellets.

@mada94fxr 6 жыл бұрын

That makes perfect sense. Thanks for that tidbit. I have a question for you on your feed auger. What diameter is it and do you have that on a timer or does it run constant at a very slow speed? I am kicking around building a external hopper and a feed auger direct into the closed wood hopper. I am still in the planning stages at this time, but, your input would be great. Thanks.

@theDriZzleRGasifier 6 жыл бұрын

I have two augers. one for woodchips up to 30 mm square. And one for pellets. the woodchip auger has a square tube and in my vieuw this prevents very well the blocking of teh fuel because chunks can escape in the corners. this way one can do with a less powerfull drive motor. You find a video of it here kzfaq.info/get/bejne/aZp3dZaK0JvTeac.html My other auger is a a standard pellet transport auger some 2 meters long. You can see it in above video. The fuel transport in my dropfeed DrizzlR is controled by a pyrotouch. This I build to keep the flaming pyrolyse at always the set height. Here is a video of it kzfaq.info/get/bejne/ha2qp5uqktC0e4U.html

@mariust1168 5 жыл бұрын

Klasse Videos würde mich freuen wenn noch mehr kommen würden , will mir jetzt auch einen Drizzler bauen.

@jorgenlannock 6 жыл бұрын

Definatly going to watch all the videos here before i choose to wich gasifier i'm going to build. Any chance you are Dutch :D? you are definatly putting the gasifiers to the next level!

@theDriZzleRGasifier 6 жыл бұрын

Jorgen, Thank you for passing by. I am from the former South Netherlands region Flanders, so yes I speak Dutch/Flemish. Now I live in Poland. If you are interested in the DrIZzleR design, please join our gasifier forum: forum.thedrizzler.com Luk

@Garuthius 6 жыл бұрын

Will you ever do a 'How2 replicate the build' series ??. I am most interested in trying to build an efficient gassifier and your extended run times are nothing short of incredible.

@theDriZzleRGasifier 6 жыл бұрын

Thank you for the complement. I sure will do a how to replicate video once. The problem is that after every test I find thing to improve and I do not want to publi something not perfect.

@nuclearping 6 жыл бұрын

I've watched all your videos up until here. Very very impressive. I admire your patience and passion for this project. I'm planing to start building my own DriZzler system with some friends in 1-2 months. Therefore I'm very grateful that you share your experience and progress. I'm still having difficulties to understand how your "grateless" design with an agitator works though. Where does your reduction bed lie on? And where goes the ashes after the agitator "shocked" it? It would be really great if you could make a "how to build" video at one point. Or draw some plans and pictures. It would help a lot. I don't think it needs to be perfect. Reaching perfection is an ever going path, because you can always keep improving and modifying things. The way is the goal, which is best walked together with others because we can help each other. Or as we say in german: "Vier Augen sehen mehr als zwei."