What the hell is a liquid petroleum factory?
I’m in a natural gas processing plant.
Basically a refinery, but for gas. Not oil.
Gas comes to us from a gazillion wells in the area, crude by definition.
Some light oils are carried with it.
First thing we do is physically separate all the liquids from the gas stream, which includes oil and water.
This leaves behind only trace amounts of liquids still suspended in the gas.
The gas goes up through a contactor column (like those tall, skinny towers you see in refineries) and out the top, while an amine/water mixture is flowing down in the opposite direction.
The amine attracts primarily carbon dioxide, and trace amounts of hydrogen sulfide, and removes it from the gas stream.
Next, the gas goes up through a glycol column that picks up any free water molecules.
The heart of the plant is the cryogenic column, where we take the gas down to -165°F to liquefy everything but the lightest hydrocarbon, which is methane.
Methane is our natural gas product, which is compressed up to 1,100 psi and forced into a network of pipelines.
Ethane, propane, and butane combined come out the bottom of the cryo column in liquid form and are pumped out of the plant into a pipeline at 1,100 psi as our liquid product.
Natural gas liquids, or NGLs it’s called.
Any hydrocarbons heavier than butane, such as isobutane, pentane, and a witches brew of light oils goes into storage tanks and is then sold into a pipeline for another process.
Basically we are a gas plant, but we make a shit-load of very light petroleum liquids.
NGL is where the money is.