LNG stands for Liquefied Natural Gas, a premium natural gas product primarily composed of methane. Known for its high calorific value, low pollution, and ease of storage and transportation, natural gas has become one of the preferred high-quality energy sources in modern society. LNG is the result of purifying and treating natural gas produced from gas fields, removing all impurities, and then cooling it to approximately -162°C under atmospheric pressure, condensing it into a safe, colorless, odorless, and non-toxic low-temperature liquid. It boasts high purity, safety, storage efficiency, and flexible transportation. Its volume is about 1/600th of the same amount of gaseous natural gas, and its weight is approximately 45% of the same volume of water.

　　Safety Advantages of LNG

Due to excellent physical and chemical properties, it is safe: with a higher ignition point and an auto-ignition temperature of 590 degrees Celsius, the combustion range is narrow, at 5-15%, lighter than air and easy to disperse. LNG will quickly heat up and vaporize upon leakage, and the gas density of the natural gas after vaporization is approximately half that of air, making it highly volatile but non-flammable and non-toxic. Methane has a relatively stable chemical nature and can burn quietly in the air without supporting combustion.

Due to perfect storage conditions and safety: The tank material maintains its mechanical strength, such as tensile and compressive strength,低温impact toughness, and thermal expansion coefficient under low-temperature working conditions, making it suitable for operation in低温 environments. The foundation of the tank can withstand the low temperatures of direct contact with LNG, the insulation material is non-flammable, and has enough durability to withstand the impact of fire-fighting water, with a reliable safety protection system. Automotive LNG is stored in insulated containers at pressures ranging from 0.05 to 0.5 MPa, offering higher safety compared to the storage pressure of 20 MPa for CNG. The low-temperature mobile cylinders have undergone rigorous inspections including high-temperature tests, impact tests, and vehicle simulation tests by the National Quality Supervision and Inspection总局. Even in the event of a traffic accident, LNG leakage is highly unlikely.

　　Economic Advantages of LNG

Due to its high calorific value and economic efficiency, LNG, compared to coal, natural gas, and liquefied petroleum gas, offers a higher calorific value and relatively stable pricing with minimal international influence. LNG's calorific value is 12,000 kilocalories per kilogram, while good coal has only about 8,000 kilocalories. An LNG vehicle with the same displacement saves about 20% in fuel costs compared to gasoline or diesel vehicles, and maintenance costs can be reduced by approximately 10%. Although there is a price difference of around 80,000 yuan between LNG heavy trucks and diesel trucks, the operational advantage is significant due to lower fuel expenditures. The fuel efficiency equivalent of 1 cubic meter of LNG (after vaporization) is the same as 0.95 liters of diesel (Number 0). Calculations show that a tractor can save around 80,000-140,000 yuan in fuel costs annually. A dump truck can save around 100,000 yuan in fuel costs annually.

　　Advantages of LNG Transportation

Low temperature, high gas-liquid expansion ratio, high energy efficiency, easy to transport and store. Natural gas is transported through pipelines, continuously and reliably, with simple and easy-to-operate equipment. It is straightforward, convenient for long-distance transportation, and cost-effective. With the rapid development of the global natural gas industry, liquefied natural gas (LNG) has become a significant part of international natural gas trade. Compared to ten years ago, the world's LNG trade volume has doubled, showing a strong growth momentum.

　 Convenience Advantages of LNG Usage

Convenient due to the LNG refueling time. LNG refueling takes even less time than gasoline. Long-distance LNG buses equipped with two tanks can safely travel over 1,000 kilometers, requiring only a few minutes to refuel once.

Convenient due to LNG's power performance. LNG's power performance is no less impressive than diesel vehicles, with a longer range. A LNG truck equipped with two 450-liter gas cylinders can travel 800-1,000 kilometers.

Due to the mature development chain of LNG. China has established a complete technological and industrial chain for LNG-powered vehicles. The core technology of natural gas engines and low-temperature vehicle-mounted cylinders is well-developed, with whole vehicle assembly, spare parts production, and maintenance technology all meeting international standards.

The clean and environmental benefits of LNG

LNG is considered the cleanest fossil fuel on Earth, offering excellent environmental benefits.

Clean due to the chemical properties of its main component, natural gas. Compared to coal as fuel, it significantly reduces emissions of carbon dioxide, carbon monoxide, sulfur dioxide, particulate matter, and other pollutants like ash, leading to a substantial improvement in environmental quality and immense social benefits.

Cleaned due to the liquefied natural gas (LNG) production process. During the process of natural gas liquefaction, after deep cooling, the first step is to pass the gas-liquid filter to remove mechanical impurities and free liquid droplets from the natural gas. Then, the raw gas heater uses MDEA to absorb CO2 and H2S from the natural gas through thorough contact. Subsequent processes include decarbonization, dehydration, dehydrocarbonation, and de-mercury, followed by a dust filter to remove particulates from the natural gas. This results in LNG at -162 degrees Celsius. Data shows that using an engine with LNG fuel reduces overall emissions by about 85% compared to gasoline and diesel, with a 72% reduction in hydroxides in vehicle emissions, a 97% reduction in CO, a 39% reduction in NOx, a 24% reduction in CO2, a 90% reduction in SO2, a 40% reduction in noise, and the absence of lead, benzene, and other carcinogenic substances. Essentially, it contains minimal sulfides.