Wood/Biomass Gasifier? Answered

I have always been interested in the principles behind gasification, but I have had some problems fully understanding it due to some differences in the devices I have seen.  I have noticed two real differences which I can only describe as closed and open systems.  Closed systems have some heat source which heats a closed container of wood, this wood is directly fed to an engine or flame.  No air can enter and their is no combustion prior to reaching a torch or the engine.  The open systems I have found to be more common but I can't really grasp how they work.  The fuel source is lit and then the smoke is captured, but this captured smoke is then somehow flammable.  I just find it difficult to understand how this can work in an open air-fed system.  Does anyone have more details on the differences between these two styles?

Question by jj.inc 5 years ago  |  last reply 5 years ago


How would you make a gasifier to convert tires (a petroleum-based product) to fuel to run your car  (and of course you would put a wet scrubber on the exhaust to limit damage to the environment) just wondering if it was possible i put the wood gasifier picture there because thats how i understand it and want to know if the same concept is possible with tires if you look up "the colony" look up season one they make a wood gasifier and do a good job explaining it 

Question by bossmansam 8 years ago  |  last reply 7 years ago

Gasifying truck travels 10,000 miles

From the first time he saw Emmett "Doc" Brown fire up the Mr. Fusion home energy reactor in the "Back to the Future" movies, Dave Nichols has always wanted to make a vehicle run on garbage.Two decades after the trilogy, the 42-year-old home builder and auto shop owner from eastern Connecticut isn't traveling through time in a DeLorean, yet. But he's modified his 1989 Ford F150 pickup truck to run on wood, leaves, cardboard and other "biomass" with a fuel system that he says expels virtually no pollution.The technology is called gasification, and it's been around since the 1800s, when it was used for street lamps and cooking. It even powered some vehicles during World War II, but faded away under oil's dominance.Associated Press ArticleRelevant Instructable

Topic by Kiteman 9 years ago  |  last reply 9 years ago

Wood gasifiers and safety - Carbon Monoxide poisoning - hospital

Sorry if it is in the wrong section of the forum. If it can be moved to a better place then do so. This is a quick mention to anyone that is playing around with any burners such as:    wood gas generator    bio-gas    wood gasifier    'hobo' stove I am not severely concerned but it did happen, I think it needs a mention, as it is for everyone's safety. After playing with wood gas and attempting methanol creation from a small gasifier unit for a few weeks, I had started to realize that each day I had a most annoying headache / migrane in my frontal area of my brain / head. They ended up getting so bad that my body could not tolerate them anymore and started to go into shock, causing a rather painful, endless throwing up session for many hours each time even.  It came to a point where after 3 weeks of playing with a bio-gas generator for about 4 hours a day had started to lead me into temporary blindness an hour and a half at a time. This was when I was concerned as I could not read any more instructables :( After a quick jot to the local doctors, I explained what I had been up to and I was correct. I had given myself the rather classic, and very close to death, carbon-monoxide poisoning where my doctor insisted I go to emergency at the hospital ( 2 hours away ) immediately and have someone else drive me. Pretty much equivalent to staying inside a garage with your car running for 5 hours, all the doors closed. I was very close to severe carbon monoxide poisoning and death.  At the hospital, blood was taken, analysed, and they had discovered large traces of C02 that they attempted to flush with some oxygen, but this only works to a point and they mentioned that nothing else could be done apart from telling me not to use or be near any smoke sources for at least 3 weeks and I should recover fine. I am still playing with my wood gas generators, and attempting to make methanol, but these days, after 3 days ago, I take further safety precautions to make sure it wont happen again. Such as: ventilation / exhaust fan ( I WAS OUTSIDE WHEN I WAS POISONED! DONT TAKE THIS LIGHTLY! ) keep a distance, find a better way to ignite / extinguish the burner keep your face and body out of the smoke dont watch the flames / smoke from above for any longer than 2 seconds do not taunt the Criosote by-product of wood. I am not sure which is more toxic. The smoke or this.   ( criosote / bio-crude, whatever you want to call it, it is the condensate of the burner unit containing more chemicals, very stinky) do not store criosote indoors withough a sealable container ( the smell likes to soak into things, like my kitchen ) if you know what you are doing, keep oxygen tank nearby use all protective clothing and masks, etc. There was a small arrogance in my head when playing with these units. And that is simply that I was thinking 'it is just smoke'. Wood gas generators are generating a much more toxic smoke than just sitting around your camping fire and should not be considered to be something to play with, without proper valves, pipes, burn off points etc. It contains on some scale: carbon-monoxide, methane, acids ( acetic ), tar and many other defects that will cause you issues if you are not careful. Keep it safe guys, this was a rather difficult one for explination, but I do not want someone other than me to be in that same sickness / position as I was with the poisoning, as it is the most painful experience I had yet had.  Worse than me hitting a tree head on at 80km/h. Worse than falling 2 stories off a cliff onto rocks. Worse than being hit by a car and thrown over it's windscreen. Worse than the feeling of an unsuccessful home made rocket launch. All of these above I have had happen to me, and the poisoning was by far the worst and I was scared more for my life than than any above accidents. It is not a very nice feeling, it is a deathly, sickly, useless feeling, blindness is not far away from death if found in this situation. Oxygen / fresh air is the only thing to help you if poisoned, even if in hospital. Keep it safe guys. If you want me to write up a full on poster on wood-gas / wood-heater safety I can or even just a propper write - up on general safety with this smoke and the wood gas units etc. Ask please and I will. Hospital staff will most likely give you 'items of interest' for instructables if you just ask them too. I have a heap of things from a stethoscope to vials to 'red dots' for homemade ECG machines. They tend to like crazies like me that make weird stuffs .. i hope ive gotten the point across anyway.   

Topic by AtomRat 6 years ago  |  last reply 2 years ago

Is it possible to get gas out of a liquid other than by boiling?

Still putting my solar device together and I'm still having some trouble getting the working fluid (ethanol) to boil. Almost there. I was wondering tho if there's not an easier way. Is it possible to by adding heat, make a gas dissolved in a fluid bubble out. Like if you heat up something like pepsi, get all the CO2 to gasify. And, how would you get the gas back in?

Topic by SolarFlower_org 9 years ago  |  last reply 9 years ago

UK hacked car takes speed record off Americans.

Just over a year ago, the BBC had a coffee-powered car built, along the lines of this popular instructable. Now, that same car has been used to set a new speed record for a gasification-powered car, previously set at 47mph by Beaver Energy, using a car run on gasified wood-chips. With his car running coffee grounds, engineer Martin Bacon and his team from County Durham. pushed the record up to 65mph, an official Guinness Record, although it falls short of the team's goal of 80mph. The BBC article is here, but if you're outside the UK, and can't watch the video, the same video is below, but lacks the voices.

Topic by Kiteman 7 years ago  |  last reply 7 years ago

Is there really a theory behind the hojo motor scam? Answered

I ran into it on line.  More truthfully, it ran into me.  I've never heard of it.  I do know it's a scam, you can't spend $100.00 at the hardware store and build a device that supplies 120 volts at 2oo amps to power a house.  The whole thing did pique my curiosity, just like a gasifier or hovercraft or flying lawnmower would.  The problem is that if you try to find just information on what the thing is all you get is page after page after page of scam sites or people trying to sell plans for some mythical device. The only thing I've been able to ferret out is that it's some kind of perpetual motion device that will power my whole neighborhood if I spend 9 hours building it.  I like to think none of my fellow humans are silly enough to believe that. Anyway, without trying to tell me you have one powering your house and an orphanage out of kindness or trying to sell me plans please explain the theory behind it.  Sorry if I sound grumpy, I've been battling scam sites trying to look legitimate for the last hour.

Question by AngryGuy70 7 years ago  |  last reply 6 years ago