Definition: A “cracker” breaks down large molecules from oil and natural gas into smaller ones. An ethylene “cracker” produces base petrochemical “building blocks” which are the first stage in the chemicals manufacturing chain.
Comments: Natural gas companies have to remove Natural Gas Liquids (NGLs) from methane to make it “pipeline quality.” NGLs are made up of ethane, propane, butane and other compounds. These can be used as feedstock to produce chemicals. Propane and butane are types of Liquefied Petroleum Gas (LPG) and can also be used as fuels.