详情
LNG Liquefied Natural Gas GOST 5542-87 :
Liquefied natural gas (LNG) is natural gas cooled to -260 degrees F
so that it can be transported safely to meet the growing demand for
natural gas.
The gas stream is typically separated into the liquefied petroleum
fractions (butane and propane), which can be stored in liquid form
at relatively low pressure, and the lighter ethane and methane
fractions. These lighter fractions of methane and ethane are then
liquefied to make up the bulk of LNG that is shipped.
Natural gas was considered during the 20th century to be
economically unimportant wherever gas-producing oil or gas fields
were distant from gas pipelines or located in offshore locations
where pipelines were not viable. In the past this usually meant
that natural gas produced was typically flared, especially since
unlike oil, no viable method for natural gas storage or transport
existed other than compressed gas pipelines to end users of the
same gas. This meant that natural gas markets were historically
entirely local, and any production had to be consumed within the
local or regional network.
Developments of production processes, cryogenic storage, and
transportation effectively created the tools required to
commercialize natural gas into a global market which now competes
with other fuels. Furthermore, the development of LNG storage also
introduced a reliability in networks which was previously thought
impossible. Given that storage of other fuels is relatively easily
secured using simple tanks, a supply for several months could be
kept in storage. With the advent of large-scale cryogenic storage,
it became possible to create long term gas storage reserves. These
reserves of liquefied gas could be deployed at a moment\'s notice
through regasification processes, and today are the main means for
networks to handle local peak shaving requirements.
