How to turn plastic waste into diesel fuel cheaply

[Jordan14]

The smaller do not means and easier, the minimum should be 100liter as it will never be filled in full capacity, so math say in kiln should be 620C so let walls or reactor have fairly thickness, the reflux tower should content minimum 10% mass of the waste oil but keep that number bigger at least for experiments, and condenser I prefer the horizontal as they do not take a lot place and they are extreme efficient

[jonathan]

JORDAN14 what im thinking is how much small my reactor can be.? As it is continous system i wish i go small as i can. Whats your opinion?

[Jordan14]

Jordan14,, sorry for my english.. I already try tests with oil but i want one continous system. But yes i take your advice. I will find time for testing my system i biuld first for plastic and see how it goes.

It is easier on waste oil for the start, Excalibur also have and continuous system ( still exist video and blog), to understand you better draw what you want to build or picture your equipment and I will help you much as I can.

[jonathan]

Jordan14,, sorry for my english.. I already try tests with oil but i want one continous system. But yes i take your advice. I will find time for testing my system i biuld first for plastic and see how it goes.

[Jordan14]

mixed fuel



Hello ;
Well MERC is the best of the best , its my dream car, unfortunately its very expensive in my country .

The mixed fuel Ur using has about 10-15% gasoline fraction in it .
This increases the pour point of the diesel fuel & doesn't let it crystalize in cold .

The viscosity would be ok but did U check the Specific gravity ?
My mixed fuel gravity was about 780g for One liter.
after separating the gasoline fraction it jumped to 820g which is quite close to the standard diesel fuel at 840g per liter .

Now this is exactly the same number with my fuel,780g for one liter also I didn't have separator, probably i should separate to see am I right before new experiment.
For now the goals I must achieve is
Reactor temperature to increase around 430C
Reflux tower temperature up to 360C
To build separators.


Meanwhile I will check once again book about catalyst cracking and to find some material about separators, if someone have some material I would be grateful for sharing material.

[Jordan14]

Good morning. I want to try black waste oil continous system. Can someone help me about oil inlet pipe,? Inlet feed pipe just goes down the retort vessel? Thanks

For the start keep the simple, Excalibur represent one very simple and efficient system for waste oil

[Jordan14]

Hi jordan, most poeple i see just doing mixed fuel, i remember there was one doing diesel and petrol from waste oil. But maybe i forget because its years ago. I also biuld one but try once and had problem with gasket. I had to stop because family member got cancer and i was busy help him. If i remember good each fraction need to be heated for fuel type and need to have catalyst, maybe stainless steel pieces.

Hi Jonathatn!
I already have catalyst in reflux tower that's why I must rise temperature at 360C, my problem is I made him for amount of 1000t plastic mass but right now I'm around 400kg basically reflux tower is to wide, one of solution is to put cylinder of the middle of reflux tower then reflux will be mostly around wall an it will have better heating, this time I will not playing I'm going to put two additional burner with butane gas.
I'm sorry to hear for you family I understand you, about gasket I will picture some efficient and cheap one, they can also serve and as safety "valve".
My machine is relatively big with 3,4 height and take a lot a time to make changes and also they are costly so every test must be well planed.

[jonathan]

Hi jordan, most poeple i see just doing mixed fuel, i remember there was one doing diesel and petrol from waste oil. But maybe i forget because its years ago. I also biuld one but try once and had proplem with gasket. I had to stop because family member got cancer and i was busy help him. If i remember good each fraction need to be heated for fuel type and need to have catalyst, maybe stainless steel pieces.

[Jordan14]

Great work my friend. Are you going to post photos of your system?

It will not help a lot, my diagram shows all process part of machine,but however if my machine start to work with God help, I will help others to make own functional machine.
right now I must project separators for fractions, if you remember on forum if someone put some details I would be grateful.

[jonathan]

Great work my friend. Are you going to post photos of your system?

[Jordan14]

Jordan14 as in past i read alot theres not hcl proplem if you use the right plastics as long thry are clean and without papers.

Thanks on fast response!
i didn't start to work on HCL problem but it could be problem in cellulose as there was residues from paper glue (the white one), this batch was clean so I will see how it looks when i open the reflux tower, it made huge job to clean condensers and pipes, I will picture how oxidation looks.

[jonathan]

Jordan14 as in past i read alot theres not hcl proplem if you use the right plastics as long thry are clean and without papers.

[Jordan14]

2.From the work of Japanese authors, who posted data on the properties of cracking products of individual polymers (I cite three relevant tables here), I concluded that PE and PP will not produce liquids with a specific gravity greater than 0.8. But for a diesel you need at least 0.82! Instead, PS will give an excess weight of at least 0.93. Further, neither PS nor PP will provide the required viscosity - for PP products it will be no more than 1.6 centistokes, and for PS products - barely 1.1 centistokes. The diesel requires at least 2 centistokes, and can be provided by PE only, although the temperature in the reactor must be at least 440C. In addition, this temperature is necessary to increase the average molecular weight of the products to the level of the diesel range. This is the second set of arguments in favor of using a mixture of three polymers as a raw material instead of one.
PE cracking.jpg
PP cracking.jpg

PS cracking.jpg

As I understand this is cracking without catalyst?!
Did they separate fraction or all liquid fraction where collected in one vessel?
From the book Feedstock Recycling and Pyrolysis of Waste Plastics, where are done experiments with catalyst the numbers are different.
Here parts from the experiment where there was no separation of light and heavy fractions, on first diagram is represent the sgW for type of plastic and in second the result experiment.
The name of script "Thermal Cracking of Virgin and Waste Plastics of PP and LDPE in a Semibatch
Reactor under Atmospheric Pressure"

[Jordan14]

Thanks JORDAN14, I THINK YOU GOT MISTAKE IN FIRST PHOTO AND NUMBERS DESCRIPTION.

Yes I did I will correct right away, also i made mistake for temperature of gasoline from November it is 54-65C not 54-55C
There is and problem with HCL but that's not now important.

[jonathan]

Thanks JORDAN14, I THINK YOU GOT MISTAKE IN FIRST PHOTO AND NUMBERS DESCRIPTION.