In general, the liquified natural gas (LPG) method is a method which uses pressurized liquefied chemical agents for the removal of most of the volatile organic compounds (VOCs) from natural gas, as well as other materials. The LPG is then compressed and liquified under very high pressure and at extremely high temperature. The result is the removal of contaminants and waste materials which are found in natural gas. Today, this method can be used for a wide range of applications. This is because liquified natural gas can provide a safer and more convenient way to store, handle, transport, and even burn it. In fact, LPG has been standardized by several environmental organizations as the “most effective” method for the removal of contaminants and waste from the atmosphere. The liquefaction of natural gas is a complex and expensive process. Therefore, it was mainly used to generate electricity in the industrial sectors. As energy prices continue to rise, it has become more urgent for manufacturers to find new ways to generate power without polluting the environment. The concept of gasification has been around for many centuries. However, its widespread use has been limited due to its expensive and time-consuming process.
The LPG method uses a combination of electricity and heat in order to convert natural gases into a liquid form. The solid carbon dioxide and water present in the air combine with the VOCs in the natural gas in the presence of heat. When combined, these forces create heat that forces the compound into a liquid state. Once there, it can be transferred into any number of different liquids, such as water or oil.
The process of liquified natural gas is usually applied to the elimination of organic substances from the fuel stream. This method is sometimes used to recover the lubrication values lost during the transportation of fuels by land, air and sea. The LPG method makes use of liquefied petroleum gas, or LPG as it is commonly referred to.
With the increase in the awareness towards environmental issues, various technologies have been introduced to reduce the production and distribution of greenhouse gases. One such technology is the LPG method. This method not only reduces emissions from fuel combustion, but also reduces the volumes of gas waste and thus helps in the reduction of the volume of carbon dioxide released into the atmosphere. This process of utilizing LPG results in greater safety for the environment.
Since natural gases are heavier than water, they need to be injected into the ground to be processed. When the natural gases are converted into a liquid, it is transferred into a series of pipes and is allowed to flow freely. When this process is complete, the liquified natural gas forms into gaseous form which can be further refined. There are two types of methods for converting the natural gases into liquid form namely, condensation method and phase transition method.
In the condensation method, a mixture of natural gas and a carrier oil is liquefied and stored for later use. The carrier oil is required for ensuring that the gaseous mixtures do not harden due to high pressure. Once the liquid is ready, it can be removed from the pipe by using vacuum pumps and is then collected in an underground reservoir.
The other method called the phase transition method involves the liquification of a gas in an inert carrier oil. It is similar to the condensation process in terms of the storage of the gaseous liquids in an oil reservoir. When this method is used for producing liquid LPG, a thin film of sodium hexafluoride is developed on the surface of the carrier oil. This film absorbs the liquid molecules and after being cooled, changes its physical properties into a gas form. After this, the gaseous carrier oil is passed through a cooling unit where it undergoes further changes and converts back into a liquid.