pstarr wrote:NGL's are chemical feedstock, crude oil is turned into gasoline, diesel, bunker oil, transport fuels. How does IEA/EIA consider them to crude replacements?
If the petrochemical industry now has a new feedstock(NGLs), then they can reduce their consumption of crude oil as a feedstock. For example, using more ethane(from NGLs) frees up more naptha(from crude) to be turned into gasoline.
A Gas-Powered Renaissance
Plastics play an unprecedented role in almost every part of our daily lives. It’s impossible to go through a single day without coming into contact with some kind of plastic: water bottles, cell phones, automobile parts, keyboards for computers, chairs, tables, sunglasses, and just about everything else.
The petrochemical industry makes all of those plastics from various hydrocarbon “feedstock.” You may not realize it, but the shale gas revolution in North America is playing an important role in creating a true renaissance in petrochemical manufacturing in the United States.
The reason is that in most parts of the world, the feedstock for petrochemicals comes from crude oil-price related products such as naphtha. Here in North America, they can largely use natural gas liquids (NGLs) instead. These NGLs (mostly ethane and propane) are produced alongside natural gas and are less expensive than their crude-oil based counterparts. Ethane and propane can be converted in compounds called olefins – ethylene and propylene – which is what petrochemical companies use to make plastics and other petrochemicals. The availability of abundant, relatively inexpensive feedstock right here in North America is creating a boom in petrochemical manufacturing. That means more jobs and even an increase in exports, helping the U.S. trade balance.
A Gas-Powered RenaissanceEthane, Gas & NGLs/1
*Highest conversion rate to ethylene
*Considered NGL (Mideast Gulf) or NGL/gas
*Feedstock value, not only BTU value
*Frees naphtha for gasoline use
Petrochemical Feasibility & Competing FeedstocksFEEDSTOCK OPTIONS FOR THE PETROCHEMICAL INDUSTRY
A variety of feedstocks are used for petrochemicals production. Petrochemical feedstocks are generally produced from the refining of crude oil or the processing of natural gas. The figure below illustrates the conventional sources of petrochemical feedstocks. Recently, alternative process routes utilizing coal, biological hydrocarbons and unconventional natural gas, particularly shale gas, have gained more attention as potential feedstock sources. Other emerging sources include unconventional natural gas, predominantly from shale gas, and bio-based commodity feedstocks.
Due to growing supplies of unconventional sources, United States natural gas prices have fallen below crude oil equivalent which has resulted in a strong incentive to extract ethane from “cheap” natural gas. A few years ago, minimal ethylene capacity additions were expected in North America, particularly in the United States where no new capacity developments were projected. However, with the anticipated amount of NGLs-rich shale gas, a number of chemical companies have announced their desires to take advantage of the new feedstock supply. Many have already switched their steam crackers to crack lighter feedstocks while some are proposing building new ethane-based steam crackers to handle the projected supply.
The ability to use alternative feedstocks is one key factor to achieve the lowest cost of chemicals production especially where feedstock prices have become highly volatile. The petrochemical industry continues to be highly cyclical and commoditized, therefore finding ways to optimize production and minimize cost is important for success. The ability to use alternate feedstocks is one of the key elements in achieving the lowest cost of production, especially in an environment where feedstock prices have become highly volatile.
Global Petrochemical Feedstocks ReportWhy seek new feedstocks?
*Alternative petrochemical feedstocks due to shortages or unavailability of naphtha or natural gas
*Alternative crude oil sources due to declining conventional crude production and/or need for regional energy independence
*Profit opportunities from lower-cost alternative feedstocks: Remote Gas, Coal, Tar Sands, Shale Oil and Heavy Crude
*Utilization of renewable feedstocks that replace fossil fuels for power and transportation.
More Feedstock Options
The oil barrel is half-full.