How to turn plastic waste into diesel fuel cheaply

[kedigen]

You are starting to get beyond the scope of this Forum. Hence why we say stick to the two easy to process plastics.
Once you get into Chemistry, you really REALLY need to know what you are doing. For instance, Hydrogen Peroxide and Citric Acid mixed in just the right proportion, can become highly unstable and explosive. Hydrogen Peroxide is a powerful oxidizer and highly reactive to many things. So you need to be extremely careful using it and extra extremely careful what you mix it with.
Tyres are a terrible stock to use for fuel. The resulting oil smells terrible and it is black as you likely already know. The Chinese use it for boiler heating fuel and that's about it. It is not good for Vehicle Engines. You also end up with a huge amount of waste after the process. About 50% of the Tyre ends up as Carbon Black. Some heat the entire tyre and some remove the steel belting first before heating. Trying to clean out the Retort after a heating process is very messy.

Do you have a suggestion for plastic oil?

[wheels]

Do you have a suggestion for plastic oil?

Not totally sure what you mean. Do you mean which plastics are best for fuel? There are two main plastics. Polyethylene(PE) and Polypropylene (PP). If you are unsure of what plastics, then you need to read this entire Thread. Pretty much everything has been asked and answered that can be.

[kedigen]

Not totally sure what you mean. Do you mean which plastics are best for fuel? There are two main plastics. Polyethylene(PE) and Polypropylene (PP). If you are unsure of what plastics, then you need to read this entire Thread. Pretty much everything has been asked and answered that can be.

I've been away from the forum for a long time. But I made a 4,4m3 reactor for plastic. And we got positive results. The resulting product was very flammable.I did it by talking to you. In the use of pe, there was a paraffin problem. You said you use reflux. That's four years ago.

https://www.youtube.com/watch?v=wgM_uCKhfz0

this is 4.4 m3 reactor for plastic (without reflux)


PLASTİK PİROLİZİ REKTÖR YAPIMI VE İŞLETİMİ


I also have blackened problem. I am trying to solve this problem.
I am now building a 6m3 new reactor. We will tire pyrolysis in this reactor. We will use this oil in the generator. For electricity generation. Tire oil is also quite blackened. I need to clean it.

If this problem is not solved, the exhaust outlet is clogged. For this reason I was desperate.

thanks

[wheels]

I've been away from the forum for a long time. But I made a 4,4m3 reactor for plastic. And we got positive results. The resulting product was very flammable.I did it by talking to you. In the use of pe, there was a paraffin problem. You said you use reflux. That's four years ago.

https://www.youtube.com/watch?v=wgM_uCKhfz0

this is 4.4 m3 reactor for plastic (without reflux)


PLASTİK PİROLİZİ REKTÖR YAPIMI VE İŞLETİMİ


I also have blackened problem. I am trying to solve this problem.
I am now building a 6m3 new reactor. We will tire pyrolysis in this reactor. We will use this oil in the generator. For electricity generation. Tire oil is also quite blackened. I need to clean it.

If this problem is not solved, the exhaust outlet is clogged. For this reason I was desperate.

thanks

Firstly to the black Tyre oil. I suspect the black is caused by ultra fine particles of carbon. This will need filtering out. The question is how. You need to get a chemical analysis on the Fuel and find out how small those particles are. Then from that, you can determine if there is a Filter fine enough that is in existence that would filter the carbon out. The only problem is that a filter made from some form of material is going to clog easily and will need to be able to be cleaned regularly. I would expect that replacing them would be come to costly.
Another idea it to use a centrifuge type cleaner. There are many available designed for Fuel, but they are expensive. The advantage is that there is no filter required. You can get small units that you manually clean and larger units that automatically clean.

The PE plastic, actually it was not me that said about the reflux. I think that was excalibur. PE naturally produces parraffin wax. This can be controlled slightly by time and temperature. The longer the time and the higher the temperature, the shorter the Molecular chain that is usually produced. The reflux idea works by allowing the longer chains to pass through multiple times till they break down short enough to then pass right through.
The issue with Parraffin wax is that it is not a long chain molecule. So a reflux is not that effective as for longer chains like Tar. So there are other ways that the Parraffin wax is targeted in the commercial plants. It can be done chemically and it can be done by isolating the wax and then processing it, or removing it and selling it as parrafin wax. For the amateur like us here, the best is to keep the fuel warmed slightly to keep it as a liquid, all the way to the engine.
I have not tried, but you could also try adding Winter antifreeze additives used to stop Diesel from waxing up in cold temperatures.

[wrtner]

Don't get fooled on that one. There are three key points to having a fame. Fuel, Heat and Oxygen

As far as heat is concerned, what sort of temperature range are you talking about?

[wheels]

As far as heat is concerned, what sort of temperature range are you talking about?

If you are referring to the heat required to melt the plastic, it is all listed here in the Thread. Yes I know it is long, but the actual answer is more complex than just a simple single temperature. Ply you need to read it all to get a good understanding of what you are doing, or you could injure yourself and others.

[wrtner]

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This thread is extremely long. Is there someone
who would summarise the first 146 pages?

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[Hoddamdg11]

extruder and shredder

In the hope that someone is still interested.
Way back Jetijs was attempting to make a screw extruder to feed in molten plastic. (was Page 9 #259) without a lot of success.
I have just come across a Netherlands website with plans for one. They started with a long auger like Jetijs but have developed it.
see htpps://preciousplastic.com/en/machines.html
they also have plans for a shredder.
Both are quite sohisticated mechanically so not for the faint hearted.
The site is mainly concerned with recycling plastic as a means oflifting underdeveloped communities out of poverty although their setup would seem to be expensive without financial help.
regards and happy new year

[sunilkm153]

In the hope that someone is still interested.
Way back Jetijs was attempting to make a screw extruder to feed in molten plastic. (was Page 9 #259) without a lot of success.
I have just come across a Netherlands website with plans for one. They started with a long auger like Jetijs but have developed it.
see htpps://preciousplastic.com/en/machines.html
they also have plans for a shredder.
Both are quite sohisticated mechanically so not for the faint hearted.
The site is mainly concerned with recycling plastic as a means oflifting underdeveloped communities out of poverty although their setup would seem to be expensive without financial help.
regards and happy new year

No need of screw extruder and make it 2 stage process I successfully get it completed it in single stage and also commercialize the idea successfully my plant is working with 6000 kg / day capacity with giving brown red color fuel oil with density 0.82 - 0.84 almost equivalent to diesel

[wrtner]

I wonder what the spec is for avgas, the aviation industry's stuff. Gas turbines are very tolerant.

[ElectricMick]

Tyres are a terrible stock to use for fuel. The resulting oil smells terrible and it is black as you likely already know. The Chinese use it for boiler heating fuel and that's about it. It is not good for Vehicle Engines. You also end up with a huge amount of waste after the process.

That waste ought to be useful as a tarmac like product for roadmaking.

Are there any updates on the basic idea of the thread - using waste plastic, anaerobically pyrolytically converted to a fuel oil?

[blackchisel97]

Activated carbon used as a catalyst

https://www.firstpost.com/tech/scien...e-6771131.html

V

[wrtner]

https://www.firstpost.com/tech/scien...e-6771131.html

V

Thanks for that interesting link. I wonder if it actually works.

Otherwise, this project is limited to people who are on or near the Equator, with all that free solar heat with mirrors etc

[Reliable]

How to reach you for your commercial plant

[QUOTE=sunilkm153;282307]

Hello everyone,

I have been reading this thread for a while now (admittedly not all of it) and i see where a number of ppl have been having success in converting waste plastic into a fuel. I commend those who have been able to achieve their results thus far and applaud this community for the work that they have done in sharing the knowledge gained so far.

I do have some questions though i wish some of the more experienced members here can help me with.

1. Has anybody ever spoken to one of those plant managers or chemist that work for a commercial pyrolysis operation and without having them give away trade secrets provide insight as to the best way to do this on a smaller scale?
2. would members here be willing to join forces to come up with a standard that can guide those to come on how to do this without much trial and error?
3. Would members be willing to create a diary of sorts that can show the do's and dont's and what has and hasn't worked and why?

The reason i asked these questions is because I am interested in building a plant at a scale that can process about 1-2 tons of waste plastic per day. I know alot of you are manufacturing to support your own domestic needs but i am looking at a small scale commercial, and rather than going the cheap Chinese way (no offense to any member that may be Chinese) I would much rather make something that we could copy around the world for others to model.(/QUOTE)


Yes since last one and half years I was working with my own 2 ton/day plant and same concept is now successfully upgraded ( upgraded does not mean extension or addition of few parts to old plant but the old plant is kept in ware house and a totally new one is built ) to 5 ton/day continuous plant and for the same after successful trials commercial production is also started

[Reliable]

Enzyme

Halo folks, If we can establish the enzyme added in below link, it could take master Jetji's project to a higher height. Anyone with info??