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Re: Zardiw post# 38296

Monday, 04/19/2010 11:43:05 AM

Monday, April 19, 2010 11:43:05 AM

Post# of 312025
You are quoting the Islechem report which used a clean polyolefinic thermoplastic feedstock.

When you have a feedstock composed of "post consumer dirty smelly plastic that would normally wind up in a landfill.." you will get nowhere near those results.

Garbage in, garbage out.

For comparison -

The Production of Light & Medium Oil and Electricity From Waste Plastic

http://tinyurl.com/y7zua5o

[...]
Typical Examples of Process Using Different Waste Plastics

Example 1: Waste plastic cement bags of polypropylene (thin-type PP) were cut into pieces and the sand sediment removed (298.5/g).

They were then put into the cracking reactor. The pieces began to melt and were turning into a liquid state when the temperature of the bottom part of the reactor rose to 110°C and fuel oil appeared at the exit of the condenser behind the reactor when the temperature reached a specified range and the top temperature was 75°C.

After 20 minutes the oil flow increased when the temperature in the bottom increased and the top temperature reached 95°C. After 10 minutes at this stage, the oil flow accelerated and produced a great quantity of cracking gas, which was ignited after passing through a water-sealed tank. The bottom temperature was increased and the top temperature reached 242°C and cracking was carried on for 35 minutes. Ten minutes after this stage, the reaction phase finished with a top temperature of 147°C.

The cracking fuel oil distilled out of the top of the reactor was 196.5/g. The yield of fuel oil was 65.83% from the cement bag and the heavy oil that contained wax at the bottom of the reactor was 62.5/g or 20.93%. Total yield of high quality fuel oil was 86.76%. Cracking gas and loss amounted to 30.54/g or 10.23% and coke was 8.96/g or 3.01%
[...]

Example 2: In this experiment, 170.5/g of waste plastic from weaving bags made from polypropylene (PP) were put into the reactor for cracking.

The temperature in the bottom of the reactor quickly increased and the top temperature rose to 57°C. The condensed oil began to flow out of the condenser. After 10 minutes as the bottom temperature climbed and the top temperature reached 146°C, oil continued to flow and gas was produced and ignited as in example 1. The molten plastic liquid continued to be cracked and as the upper temperature reached 251°C, fuel oil and gas continued to flow at a rapid pace out of the top of the reactor for 25 minutes.

Distillate oil obtained was 118.0/g with a yield of 69.2% while the gas and loss was about 34.0/g or 19.44% and the coke in this run, which also contained oil, was 18.5/g or 10.85%

http://tinyurl.com/y7zua5o