How to turn plastic waste into diesel fuel cheaply

[kedigen]

Hello Everyone
I did this day test. I used waste plastic polyethylene. results for paraffin wax ... I used cooked clay come. but still came in paraffin. Please urgent help.
videos:
http://youtu.be/1xaq_oKcIqs
http://youtu.be/kOscVDOy96A

[VAST]

Here is some photo`s about my machine, still not finished. But almost ready for the first run.

All feedback welcome.

IMG_20141221_091406.jpg IMG_20141223_185244.jpg IMG_20141223_185302.jpg IMG_20141221_155052.jpg

[Excalibur]

Hello Everyone
I did this day test. I used waste plastic polyethylene. results for paraffin wax ... I used cooked clay come. but still came in paraffin. Please urgent help.

Kedigen
You have given such little details so please post more information about your equipment. A schematic diagram with dimensions is recommended so helpers can diagnose. What is the heat supplied by? Where are temperature probes placed?
Is the machine in the pictures, the same as the one on your Youtube videos??

[Excalibur]

Here is some photo`s about my machine, still not finished. But almost ready for the first run.
All feedback welcome.

You've been busy! Nice flanges.

[kedigen]

Kedigen
You have given such little details so please post more information about your equipment. A schematic diagram with dimensions is recommended so helpers can diagnose. What is the heat supplied by? Where are temperature probes placed?
Is the machine in the pictures, the same as the one on your Youtube videos??

photos and videos are owned by my system. temperature probe is on the cover of the reactor. temperature 380-430 C is set. is made by heating natural gas burner. reactor 330 cm in height. 130cm diameter. 6mm thickness 304 chrome. around the fire brick. output of the small box is the catalyst box. We put cooked clay as catalyst. then there is a heat exchanger. Except me paraffin, liquid will be all kinds would suffice. part of surveillance is among the first storage tank with heat exchanger. video in blue and glazed.

[Excalibur]

Are the parts correctly marked in your photo below?

Where is the sight glass I saw in your videos?
How much burner heat is being applied in kilowatts or flame temperature? It might be that the plastic is becoming superheated.
There is no apparent reflux capability which can also cause the problem.

[kedigen]

I'm not near the system. these pictures. Installation time is taken. sight glass is where I said. burner is a little big. 240-1600 kW (double tap). 300 mbar Riello brand. reactor is 4.4 cubic meters. There were 400 kg of plastic waste while testing. 350c to 40 min in the system did looking at www.eco-promservice.r site. no reflux. as you say, may be the heat? or what I can do to fix it?

[kedigen]

I protract the outlet pipe in this way? How many meters should I do?

[rozier56]

mt rozier

Merry Christmas to all. Hope your system builds work out.

[rozier56]

Dont see any reflux tower in the design? Reflux should be directly above the retort?
The condenser looks rather small !!
The temps that you are cooking at appear to be too high, you should be operating around 320*c at the retort and slightly higher at the reflux zone.
What heating space is there for the burner system?I.E. GAP BETWEEN RETORT AND THE HEATED AREA/FIREWALL?

[kedigen]

I just want the same out in this video. therefore no reflux. but do not want to wax.
How should a change in my system? If you tell on the picture, I'm glad
did not ever wax in the following system. my friend's system. I guess it worked like a long pipe reflux. thanks.

video :
http://youtu.be/VlJZCBD8nt0

[Excalibur]

Some suggestions to think about:

Your video showing the small stovetop reactor with the pipe running to a glass cup. Here the pipe is itself the reflux. The reflux core temperature needs to be less than the reactor otherwise it isn't a reflux at all. Also it needs to be erected so that an vapor that condenses in the reflux runs back to the reactor.

Your burner is capable of very high heat and could easily be overheating the reactor contents. Think about lightly simmering the plastic and avoid vigorous boiling. Perhaps choose a lower flame setting. A thermocouple probe monitoring the flame temperature could be worth considering.

Sacrificial deflector plates covering those parts of the reactor where the extreme heat of the flame is scorching the plastic might be beneficial. Or perhaps move the burner further away from the reactor so the fierce brunt of the flame is less.

The placement of your temperature probe may not be showing the full story of reactor temperature. I suggest a probe into the bottom of the reactor vessel. It's likely that this will have to be inserted from the top so a ceramic insulated thermocouple could be needed. Give some thought of how to support such a thermocouple given the depth.

With regard to your protracted outlet pipe as reflux, the height will be ultimately determined by desired reflux core temperature. The weight of your diesel product will dictate what this target temperature will be. Logically, target temperatures for this region should fall between 300°C and 350°C. Too high will risk wax forming when diesel cools. A thermocouple probe is essential here to accurately target fuel weight.

Please consider carefully. Take your time and study. There is potential for system blockage and the danger is real.

[kedigen]

thanks for reply Excalibur

I'll call the burner service. I'll make a setting for the minimum temperature. I think I told glasscup the wrong place. it is among the diesel tank with heat exchanger. (picture 2). just to see the steam. there is very difficult to flow back into the reactor. but at the reactor outlet pipe, will I protract upwards? I need to extend matter how many meters? we work between 400-430C.this high?maybe also because we heat quickly?
I use my thermocouple 2m long. The reactor 3:30 meter. temperature measurement is accurate.
in this case the solution:
1) Is the temperature of 300-350 would be better?

2). pipe in the reactor outlet, is we do as in the picture? Did this work as reflux? (picture 1)

3) How many meters is necessary to extend?

[mehmetcanural]

thanks for reply Excalibur

I'll call the burner service. I'll make a setting for the minimum temperature. I think I told glasscup the wrong place. it is among the diesel tank with heat exchanger. (picture 2). just to see the steam. there is very difficult to flow back into the reactor. but at the reactor outlet pipe, will I protract upwards? I need to extend matter how many meters? we work between 400-430C.this high?maybe also because we heat quickly?
I use my thermocouple 2m long. The reactor 3:30 meter. temperature measurement is accurate.
in this case the solution:
1) Is the temperature of 300-350 would be better?

2). pipe in the reactor outlet, is we do as in the picture? Did this work as reflux? (picture 1)

3) How many meters is necessary to extend?

One more thing.
Should Kedigen heat his catalyst chamber? And keep it at what temperature?
Any suggestions?

[Excalibur]

I'll call the burner service. I'll make a setting for the minimum temperature. I think I told glasscup the wrong place. it is among the diesel tank with heat exchanger. (picture 2). just to see the steam. there is very difficult to flow back into the reactor. but at the reactor outlet pipe, will I protract upwards? I need to extend matter how many meters? we work between 400-430C.this high?maybe also because we heat quickly?
I use my thermocouple 2m long. The reactor 3:30 meter. temperature measurement is accurate.
in this case the solution:
1) Is the temperature of 300-350 would be better?

2). pipe in the reactor outlet, is we do as in the picture? Did this work as reflux? (picture 1)

3) How many meters is necessary to extend?

Reducing burner temperature is an excellent idea. Even better would be a probe so you have a point of reference. For comparison my plant can use 700- 800°C flame temperature when initial warming up but I must cut the flame heat as low as 400°C when producing fuel.
Yes, also good idea to cut back your working temperature, at least until the problems are sorted.
Regarding the reflux size. For comparison my plant has approx 5:1 ratio for reactor/reflux. Approx sizes, Reactor= 50L, Reflux= 10L. I did have to insulate it to get the temperature high enough so I suggest 6:1 / 7:1. Your plant has a very big reactor so the vapor volume will also be big. Therefore I suspect a length of pipe as per your picture doesn't appear to be enough. The pipework configuration as you have drawn is a reflux but there is serious doubt as to whether it can handle the vapor volume from a 4.4cubic meter reactor running at full capacity.