I get that fractional distillation is used to separate ethylene from petroleum like your link says.
And I get that ethylene is used to make polyethylene, which I gather is just lots of ethylene molecules all joined up.
And I get that cracking is the process of breaking up big long polymer chains into little itty bitty molecules, like Jrandom's link says. Sort of.
And I get that somehow putting this polyethylene toothbrush into petrol must be getting this cracking thing to occur.
But I still don't really get what you mean by feeding it down its own food chain.
Dave is pointing out that petrol and plastic are pretty closely linked and when they get together, unless there are bonds preventing it, they mix. Dissolve.
You grab a gollup of heavy oil out of the ground, its so thick depending on where you get it, it needs heated pipes to move it. That's because one of the many constituents of oil is black tar.
This also explains why "light" oils sell at a higher per barrel price eg. Brent Crude is good, West Texas Intermediate a bit heavier but good too.
The oil then goes to a "cracker" which is a distillation tower in a refinery. The oil is heated and breaks down into various types of hydrocarbons which are distilled off.
The type of oil, its sulpher content, and the type of catalyst used determines the final percentages of product. Suffice to say that a barrel of oil does not equal a barrel of petrol - more like half. Here is a breakdown.
47% gasoline for use in automobiles
23% heating oil and diesel fuel
18% other products, which includes petrochemical feedstock—products derived from petroleum principally for the manufacturing of chemicals, synthetic rubber and plastics
No, but since your bike is mainly made of plastic you might not be able to tell the bike from the fuel...
Winding up drongos, foil hat wearers and over sensitive KBers for over 14,000 posts...........
" Life is not a rehearsal, it's as happy or miserable as you want to make it"
Winding up drongos, foil hat wearers and over sensitive KBers for over 14,000 posts...........
" Life is not a rehearsal, it's as happy or miserable as you want to make it"
Horace Much to his Mum and Dad's dismay
Horace ate himself one day.
He didn't stop to say his grace,
He just sat down and ate his face.
"We can't have this his Dad declared,
"If that lad's ate, he should be shared."
But even as he spoke they saw
Horace eating more and more:
First his legs and then his thighs,
His arms, his nose, his hair, his eyes...
"Stop him someone!" Mother cried
"Those eyeballs would be better fried!"
But all too late, for they were gone,
And he had started on his dong...
"Oh! foolish child!" the father mourns
"You could have deep-fried that with prawns,
Some parsley and some tartar sauce..."
But H. was on his second course:
His liver and his lights and lung,
His ears, his neck, his chin, his tongue;
"To think I raised him from the cot
And now he's going to scoff the lot!"
His Mother cried: "What shall we do?
What's left won't even make a stew..."
And as she wept, her son was seen
To eat his head, his heart, his spleen.
And there he lay: a boy no more,
Just a stomach, on the floor...
None the less, since it was his
They ate it – that's what haggis is.
Pump gas will eat most plastic and pretty quickly because a major part of it is an industrial solvent called either Toluol or Toluene. Av gas either has none or very little and doesn't cause the same problem and so is good for cleaning stuff and not dissolving it.
dave is pointing out that petrol and plastic are pretty closely linked and when they get together, unless there are bonds preventing it, they mix. Dissolve.
You grab a gollup of heavy oil out of the ground, its so thick depending on where you get it, it needs heated pipes to move it. That's because one of the many constituents of oil is black tar.
This also explains why "light" oils sell at a higher per barrel price eg. Brent crude is good, west texas intermediate a bit heavier but good too.
The oil then goes to a "cracker" which is a distillation tower in a refinery. The oil is heated and breaks down into various types of hydrocarbons which are distilled off.
The type of oil, its sulpher content, and the type of catalyst used determines the final percentages of product. Suffice to say that a barrel of oil does not equal a barrel of petrol - more like half. Here is a breakdown.
47% gasoline for use in automobiles
23% heating oil and diesel fuel
18% other products, which includes petrochemical feedstock—products derived from petroleum principally for the manufacturing of chemicals, synthetic rubber and plastics
Originally Posted by Big Dave
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