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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 1355
Mastering LNG Measurement – Essential Practices and Operational Insights 2056
Ship/shore interface for safe loading and unloading of LNG/LPG 1644
Offshore terminal for transshipment of liquefied gas 1636
LNGC’s & Tankers Hull Construction and Temperature 985
Guidance on HAZID and HAZOP for LNG bunkering operations 795
Functional and General Requirements for LNG Bunkering Operation 1064
General Overview of LNG Cargo Tanks (Typical Operations) 1694
Bunkering risk on Liquefied Natural Gas Ships Assessment and Safety Zones 1207
Equipment and cargo system of LNG onshore terminals 1314
Technical requirements for LNG bunkering systems on ships 1351
Cargo Storage System Concepts for Liquid Natural Gas Tanks 885
Crew Responsibilities for LNG Bunkering 1056
LNGC Project Factors and Cargo Containment System 790
Examples and Methods Liquefied Natural Gas Bunkering 921
LNG bunkering process – standards and rules 1272
Liquefied Natural Gas Reliquefaction Plant 1476
Liquefied natural gas (LNG) Carrier Vessel 1105
Liquefied Natural Gas Tank Protection 1104
Response of Insulation Materials to Heat 1307
Spray Pumps on Liquefied Natural Gas Carriers 1732
Liquefied Petroleum Gas Reliquefaction Plant and Boil-Off Control 2036
Time Based Heat Transfer 649
Use of Cargo Pumps on Liquefied Gas Carriers 2195
Gas Heaters on Liquefied Natural Gas Carriers 915
Low Duty Compressor(s) on the Liquefied Natural Gas Carriers 2423
High Duty Compressor(s) on the Liquefied Natural Gas Carriers 2420
Heat Transfer into the Tank 788
The ABS and USCG Additional Rules and Guides 834
Use of Vaporisers on Liquefied Natural Gas Carriers 1828
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