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LNG & LPG

LNG (Liquefied Natural Gas) and LPG (Liquefied Petroleum Gas) are two types of gases which are go through a process of liquefaction for transportation and storage purposes. Although similar in their liquid state, they differ significantly in composition, usage, and production methods.

LNG (Liquefied Natural Gas)

LNG is primarily methane (CH4) gas that has been cooled to a temperature of approximately -162 degrees Celsius (-260 degrees Fahrenheit). At this temperature, methane condenses into a liquid form, which takes up about 1/600 th of the volume it occupies as a gas at standard atmospheric temperature and pressure. This significant reduction in volume makes LNG economical to transport over long distances where pipelines are not feasible, such as across oceans. LNG is used mainly for heating and as a fuel for electricity generation and is increasingly used in the transportation sector, especially for ships and heavy-duty vehicles.

LPG (Liquefied Petroleum Gas)

LPG is a mixture of propane (C3H8) and butane (C4H10), gases that are found naturally in crude oil and natural gas. LPG is produced during natural gas processing and oil refining. It is stored and transported in liquid form under moderate pressure, which makes it easier to store and handle compared to LNG. LPG is widely used as a fuel for heating, cooking, and in vehicles. It is also used in industrial applications and is a popular choice for portable cooking and heating equipment in areas not connected to a natural gas network.

Both LNG and LPG play crucial roles in the global energy supply, offering cleaner alternatives to traditional fossil fuels like coal and oil. They contribute significantly to reducing emissions and air pollution in various applications.

Volume measurement methods of LNG transferred 1756
Mastering LNG Measurement – Essential Practices and Operational Insights 2570
Ship/shore interface for safe loading and unloading of LNG/LPG 2297
Offshore terminal for transshipment of liquefied gas 2167
LNGC’s & Tankers Hull Construction and Temperature 1347
Guidance on HAZID and HAZOP for LNG bunkering operations 1076
Functional and General Requirements for LNG Bunkering Operation 1387
General Overview of LNG Cargo Tanks (Typical Operations) 2090
Bunkering risk on Liquefied Natural Gas Ships Assessment and Safety Zones 1624
Equipment and cargo system of LNG onshore terminals 1666
Technical requirements for LNG bunkering systems on ships 1753
Cargo Storage System Concepts for Liquid Natural Gas Tanks 1162
Crew Responsibilities for LNG Bunkering 1378
LNGC Project Factors and Cargo Containment System 1035
Examples and Methods Liquefied Natural Gas Bunkering 1275
LNG bunkering process – standards and rules 1695
Liquefied Natural Gas Reliquefaction Plant 1842
Liquefied natural gas (LNG) Carrier Vessel 1398
Liquefied Natural Gas Tank Protection 1470
Response of Insulation Materials to Heat 1727
Spray Pumps on Liquefied Natural Gas Carriers 2227
Liquefied Petroleum Gas Reliquefaction Plant and Boil-Off Control 2690
Time Based Heat Transfer 835
Use of Cargo Pumps on Liquefied Gas Carriers 2835
Gas Heaters on Liquefied Natural Gas Carriers 1188
Low Duty Compressor(s) on the Liquefied Natural Gas Carriers 3044
High Duty Compressor(s) on the Liquefied Natural Gas Carriers 3009
Heat Transfer into the Tank 1042
The ABS and USCG Additional Rules and Guides 1104
Use of Vaporisers on Liquefied Natural Gas Carriers 2423
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