What is Pyrolysis? A Definition of a Heat Treatment Techonology for Energy from Waste + Gasification

What is Pyrolysis? A Definition of a Heat Treatment Techonology to Extract Energy from Waste + Gasification
Visit: anaerobic-digestion.com/what-...
In this video we will explain the definition of this process, which is used to extract energy from waste.
The non-technical answer is that pyrolysis is known to all of us in its initial stages, because it is what we can see taking place, during cooking.
Frying, baking, toasting and roasting, are all, to a varying degree “pyrolysis”. But, good cooks don’t take pyrolysis to its final stage, which is the production of char. “Char” as in burnt food!
Now for the scientific definition!
Pyrolysis is the thermal decomposition of a substance in a non-reactive atmosphere at high temperatures.
An external heat-source is applied to maintain a temperature, which is typically in the range 300 to 850 Degrees Centigrade for Municipal Solid Waste, (which is also known as household and commercial waste).
The output from the pyrolysis process is a solid residue and a “synthetic” gas, which is known as Syngas.
Many people refer to the solid residue as char. The char from the pyrolysis of MSW is a combination of non-combustible materials from the MSW, and carbon.
The syngas is comprised of a number of gases which are either combustible or non-combustible.
These mixture of gases in syngas include: Carbon Monoxide, Hydrogen, Methane, and, other Volatile Organic Carbon compounds.
Some of the condensed VOCs which result are oils, waxes, and tars. Once they have been cooled to normal temperatures.
Pyrolysis can be used to degrade fossil fuel based chemicals, but, for the purpose of this article we are solely referring to its use in the treatment of renewable organic matter.
The hydrogen and methane present are immediately available as a gas fuel.
Volatile Organic Carbon compounds in the syngas can also be cooled (if necessary), to result in a liquid fuel which, when the source is MSW, is usually classed as being a renewable fuel.
This is often referred to as anhydrous pyrolysis.
This being the heating of a solid organic material in the required temperature range, without oxygen.
There is a distinction between anhydrous pyrolysis and hydrous pyrolysis which occurs where steam is present.
The anhydrous pyrolysis of wood results in charcoal (char).
Did you ever watch a piece of coal, or wood, as it descends into the hottest part of a fire and burns?
As it heats up, there is a short period when it is often possible to see small gas jets pouring out of the recently added logs, lit by flame intermittently at first and then become red, and orange-flamed hot embers.
All the while, the volatile gaseous compounds in the coal or wood in any ordinary fire are pouring out of the wood and only once the flames have gone, does the wood come into contact with oxygen in the air, char is further burnt (oxidized) and, in an ordinary fire, where plenty of air is present, a powdery ash is produced.
Anhydrous pyrolysis is different, because there is, by definition, no air so, there is no oxygen present, with the result that so the remaining non-volatile carbon forms charcoal, and not ash.
Hydrous pyrolysis, using water can transform the waste matter into a liquid, with many similarities to a light crude oil.
There are companies that offer pyrolysis equipment that have developed their own “black box” pyrolysis systems, and some of those have optimized them by applying a vacuum to the process.
This lowers the boiling point, saving fuel, but also reducing or avoiding, some of the troublesome unwanted toxic chemical reactions.
Finally, before we end this video, there is a similar heat treatment process known as "Gasification". Gasification is also a heat treatment process.
It is essentially the same as pyrolysis except that a certain amount of oxygen is present during gasification to allow partial oxidation, producing “producer gas”:
Carbon Monoxide, Hydrogen, Methane in quantity, depending on the gasification temperature of the process the quantity of gas produced which contains methane varies.
We hope that you found this video useful, and if so, please "Like", "Share" and "Subscribe".
_________________________________
Watch this video on TH-cam here:
• What is Pyrolysis? A D...
_________________________________
Creative Commons Image Attribution:
This presentation contains images that were used under a Creative Commons License. Click here to see the full list of images and attributions:
link.attribute.to/cc/504585
_________________________________
For the full article visit: anaerobic-digestion.com/what-...
_________________________________
#pyrolysis
#heattreatment

[@rajag2616]

Thanks very much. I found for the first time that the city waste mounds can be recycled into beneficial syngas and liquid oil. This gives me a lot of hope for the natural and neat environment of our beautiful globe.

[@angedominiqueyao1307]

Thank you very much! It was insightful! More and more passionate about the energy field.

[@in_qx]

your videos are really educational and i really learn a lot . me nd my friend are ur BIGGEST FANS!!!!

[@nihatarter8750]

Very educational video, thank you sir.

[@ingridguimaraesleitao2457]

Thanks for your class video about Pyrolysis. I would like to know how the waste is prepared before to processed of pyrolysis. Thanks again.

[@beingthechange6261]

Hi,
Can't this entire process be compressed in a washing machine size Machine that can be used in houses, so the plastic waste will be treated at the place of origin itself.
I am ready to buy/fund any such product.

[@manthanchauhan4014]

Thanks buddy

[@annoorkhan4219]

Hello...if I want to start pyrolysis bussiness at florida ,then it will be possible ?

[@SolarizeYourLife]

Every city in the world should have this process going on dealing with their goddamn waste!!!
I wish I knew about this 40 years ago. I would have done a school science project on it....

[@wastemanaful]

You might say why bother with pyrolysis when incineration technology is well developed and generally accepted. However, making a syngas has great benefits, and enables the methane to be cleaned up and used for NGV fuel where batteries are unlikely to be able to be powerful enough for many years yet to power an HGV for 8 hours before being re-charged.

[@dikeledimogobe5849]

Hi! I have like this video and also subscription
I need your advice. I want to start a clinical, pharmaceutical, animal carcasses and general waste pyrolysis
Is it possible to find a machine that can burn all the above at once?

[@joshuaabidde]

I would love an answer to his above question

[@benedictcinena3452]

@@joshuaabidde This technology will save the earth from global warming....

[@holygroundsrecords1338]

Please how can i get one of the Pyrolysis reactor to buy

[@user-wp6yz4pt5r]

We are pyrolysis plant supplier in china

[@hrxsh7065]

OMG ME AND MY FRIEND ARE YOUR BIGGEST FANS PLEASE REPLY I LOVE YOUR VIDEOS :))))))))))))))

[@in_qx]

SEHRISH AHAHHAAHAHH

[@incredibleindia9844]

Omg , I am also the biggest fan

[@lisaashdowne4166]

great! Some meaning lost with automated reading

[@in_qx]

OMG I LOVE UUU

[@chudi7175]

Your use of hydrous and anhydrous in this video is confusing

[@imrangondal9097]

Explain in urdu please

[@imrangondal9097]

Explain in urdu please