Cyclone fluidized bed Charcoal GasificationTest #2
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Did not have time to try steam injection on this device
Circulating fluidized bed is a relatively new technology with the ability to achieve lower emission of pollutants. Extensive research has been conducted on this technology for the past 10 years because pollution in the world is getting more serious by the day and clean practice will be very crucial for the sustainability of the earth. The importance of this technology grew even more lately because of the tightened environmental regulation for pollutant emission.
. The fuel will be burnt at a temperature of 1400oF to 1700oF to prevent nitrogen oxide from forming.[1] While burning, fuel gas such as sulfur dioxide will be released. At the same time, sulfur-absorbing chemical such as limestone or dolomite will be used to mix with the fuel particles in the fluidization phase, which will absorb almost 95% of the sulfur pollutants.
Alternatively, the sulfur absorbing chemical and fuel will be recycled to increase the efficiency of producing a higher quality steam as well as lower the emission of pollutants. Therefore, it will be possible to use circulating fluidized bed technology to burn fuel in a much more environmental friendly method as compared to other conventional processes.
Range of applications[edit]
Circulating fluidized bed technology can be implemented in many different fields ranging from oil and gas to power stations. This technology is highly sought after due to its numerous benefits. Some of the popular applications of circulating fluidized bed are circulating fluidized bed scrubber and circulating fluidized bed gasification system.
Circulating fluidized bed scrubber[edit]
One of the applications of a circulating fluidized bed scrubber is at power stations which utilize a dry sorbent usually Ca(OH)2 to reduce pollutants like HF, HCL, SO2 and SO3 in a flue gas stream.[3] Currently, Basin Electric Power Cooperative are the only company operating the best available circulating fluidized bed scrubbing technology for a coal fired boiler plant near Gillette Wyoming since 2011.[4]-
The three major components of the circulating fluidized bed scrubber in power plants are:
Circulating fluidized bed absorber
Fabric filter
Dry lime hydration system.
In the circulating fluidized bed scrubber process, flue gas will enter the reactor from the bottom of the vessel. Simultaneously, hydrated lime will be injected into the circulating fluidized bed absorber for reaction to take place to convert SO2 and SO3 from the flue gas to calcium sulfate and calcium sulfite. Water will also be injected at the same time to control the operation temperature for maximum absorption capacity. The flue gas will then send to the bag house for further filtration. In the bag house, a series of air valves across the filters, will produce compressed air bursts to ensure a more efficient solid and dust collection. Lastly, clean flue gas will then be directed to the stack with the minimum pollutants in the flue gas stream.[4] The schematic diagram of the process is shown in Figure 1.
Circulating fluidized bed gasification system[edit]
Gasification is the process of converting biodegradable waste materials into synthetic gas without combustion. This process is first used at the Gussing power plant in Austria[5] based on the steam gasification of biomass in the internally circulating fluidized bed.
In the gasification process, fuel will be gasified at 850oC[5] in the presence of steam to produce a nitrogen-free and clean synthetic gas. Charcoal with be burnt with air in the
Figure 2: Showing Gasification Process Schematic Diagram
combustion chamber to provide the heating for the gasification process as it is an endothermic process. Thermal transfer will take place between the gasification and combustion chamber. The illustrated gasification process is presented in Figure 2.
The chemical reaction that takes place in the gasification as shown in equation [1] and [2] whereas the reaction in combustion chamber is represent in equation [3].
Gasification;
Пікірлер: 39
Wow! That looked awesome! That firestorm of burning embers was quite a sight to behold!
@NOBOX7
8 жыл бұрын
+piranha031091 Glad you liked the footage , to bad the i idea didnt work but it was so cool to test it . the device could be used in other ways but my goal was not achieved with this test. i may build a metal one and try it one more time. I didnt have time to try all the modes of operation or time to inject steam to see if the device produced hydrogen
That looks so cool and satisfying to watch.. Thankyou
Спасибо , хорошый опыт для вихревого газогенератора.
Awesome experiment!! I think the rate at which you supply air so as to achieve fluidisation and circulation affects the products of gasification such that you have more of carbon dioxide than carbon monoxide. There must be a trade-off between the rate of supply of air to achieve fluidisation and circulation with the amount required to produce carbon monoxide. So I suggest maybe to dilute the oxygen in air by introducing a stream of nitrogen.
This right here is what true science is all about! Looking good man!
@NOBOX7
6 жыл бұрын
Thanks brother
The principle would be easier to display if you had something like pure quartz or aluminum oxynitride, but using depleted carbonaceous charcoal typically lends toward poor results. Shredded tire would be pretty epic, as well as easy to ignite, of course it would release a whole lot of sulfur dioxide... =P
@NOBOX7
6 жыл бұрын
shredded tire would be a great stock , i lit a tire on fire one time and wow , the heat released is overwhelming
@NOBOX7
6 жыл бұрын
thanks for the input , gonna have to check out aluminum oxynitride
@NOBOX7
6 жыл бұрын
im thinking of trying this using a waste oil burner to heat the steam and the charcoal and just do a super heated fluidized bed , iron bath would be awesome as well
@NOBOX7
6 жыл бұрын
often people confuse this with gasification , this is a charcoal combustion reaction witch yields CO gas as a flammable by product , im not attempting gassification its charcoal gasification witch is a different chemistry. soon i will test it with steam injection to produce water gas
Once again proving that glass only breaks in down shock (mostly) really it's based off of putting glass in tension which is hard to do with thermal expansion (though not impossible) in any case, this was an interesting example of thermal dynamics, and fluid movement, all that's needed to turn this into a coal power reactor is to inject powdered coal into the air stream, the constant collision with the sides may provide a beneficial effect, i might look into something like this later. In all cool video my friend, even if you did not accomplish what you originally planned.
@NOBOX7
6 жыл бұрын
hope it works out for you , im gonna try this again when i get the time , alot of people dont understand carbon combustion so maybe ill explain it in the next test . also i will be injecting steam this time
@NOBOX7
6 жыл бұрын
yes the constant tumbling is key to maintain reaction service area , ash can inhibit the reaction but if you keep nocking it off it accelerates the combustion and the reduction
You need two stages. One to fluidize your bed and another to add cyclonic circulation
@NwoDispatcher
5 жыл бұрын
It would also be nice to add a great exchanger on the glass breaker to preheat your intake air and protect your glass from meltdown
@NOBOX7
5 жыл бұрын
Brilliant input friend
A mad scientist's dream.
@NOBOX7
8 жыл бұрын
+Joe Wilder lol indeed, total fail conceptually but great eye candy for the Gear heads that we are .
never mind flammable is flammeble!! Great idea and I am sorry to see it fail! I am also sorry I have not read (call me lazy Guilty as Judged lol) the other comments as to see if there is any mention that Charcoal has already been Gasified the needed Biomass to produce the proper gases has already been Cooked out? (? or Statment not sure what to call it but I have been cooking (attempting) charcoal for blacksmithing and the reason you do not see or should not see Flames but only sparkes is because of the removal of material that would cause it.. flames meaning loss of heat when Blacksmithing you want the heat down in the bed... OR you could try metal but use chambers to heat the gas coming from burn? was going to scrap this comment but I just am that old enough to know better but stupid enough to wanna learn more no matter the pain! And please do not give up anything and everything you do betters your knowledge and ours! If I wasn't who I "am" I would record and post what I do and learn as well!! How else can we learn if not from each other (and the inter swerving thing call the web that's full of lies and truths).. Thank you for sharing with all of us even the anti-social shut-ins of the world (that was pointed to me lol inside joke only we would know hahaha make them think you are crazy just once and you become the one who is crazy)!
@NOBOX7
7 жыл бұрын
charcoal can also be gasifeid threw the process of reduction wood gasification is not as good
Ha ja, ja ja!! I was about to ask what is the top temp that the JB weld that you are using is capable to withstand! but you answer the question long b4 I have the opportunity to ask! Nice and awesome looking experiments! have you consider to weld the glass with "Lead glass?" you can buy cheap neon tube and melt and weld it.. so you can get much higher temperatures!
@NOBOX7
7 жыл бұрын
never thought of that , you are correct , glass sticks to metal very well , perhaps i will do that on the next test , i do need this device to run longer to observe its potential .
@NOBOX7
7 жыл бұрын
brother that is a great idea , i am so gonna try that , thanks man
@Migueldeservantes
7 жыл бұрын
Yeah that is an easy solution for your problem, you only need to seat the Pyrex glass in a large Pink Isolating blanket preheat all surfaces then just weld all then let it cool at a really slow pace then you have a totally refractory setup that can probably handle up to 3650 C degrees before you need to worry about leaks... good luck with that project!!
You need a "Tee" off the inlet as a "torch port" for lighting
Did it work 😅😅😅😅😅?? lol you built a crazy self districting forge 😎 👍
What a failure of an experiment! but it sure was pretty though! Now for the intelligent comment. At the point of exhaust, your combustible gasses are too hot. Which means you have a bad air to fuel ratio. Running your gasses through a unit to cool and condense said gasses. This is good work you've done and I'd like to see you take it further.
@NOBOX7
7 жыл бұрын
thanks for your input , a viewr gave me the idea to weld my connections with glass so as soon as i can i will try it again
@japatton6
7 жыл бұрын
That's an excellent idea. I'd like to see that play out. To be more specific with the poipoint I was making about a cooling unit, connect your exhaust from the flask or beaker (in not familiar with lab equipment) to a coil of hose (acrylic for less cost) that sits in a container of water would be sufficient to condense the gasses for ignition. I could also see this being done with glass.
maybe there is too much oxygen into the flask so what appens is almost a complete combusion... but maybe. I don't know. it's very very hot, it seems a nuclear reactor hahahaha.
@NOBOX7
6 жыл бұрын
I agree , i think we didnt have enough burning at one time , it needs to be more violent, if i ever get a good metal can to try this in i will , the chemistry of burning carbon says it will work
@volt897
6 жыл бұрын
NOBOX7 a metal can is perfect. I wrote you an email.
@volt897
6 жыл бұрын
Because i am interested on what you do.
@NOBOX7
6 жыл бұрын
Ok thanks , yes i did briefly speak with you , the chemical reaction of carbon combustion is amazing . it produces a flammable gas and not just co2 , soon a will resume working on these experiments
@volt897
6 жыл бұрын
In this experiment there is too much air in the flask i think. So co2 is produced instead of co.
Add water to the coal
@NwoDispatcher
5 жыл бұрын
Gas- water shift?