At what temperature does natural gas turn to liquid?

LNG is an abbreviation for Liquefied Natural Gas. When natural gas is cooled at a liquefaction facility to approximately -260°F (-161.5°C) at atmospheric pressure, it condenses into a liquid.
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Can natural gas turn into a liquid?

Gas to liquids (GTL) is a refinery process to convert natural gas or other gaseous hydrocarbons into longer-chain hydrocarbons, such as gasoline or diesel fuel. Methane-rich gases are converted into liquid synthetic fuels.
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At what pressure does natural gas liquify?

The natural gas is then condensed into a liquid at close to atmospheric pressure by cooling it to approximately −162 °C (−260 °F); maximum transport pressure is set at around 25 kPa (4 psi) (gauge pressure), which is about one-fourth of atmospheric pressure at sea level.
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How do they liquify natural gas?

A coolant, chilled by giant refrigerators, absorbs the heat from the natural gas. It cools the gas to -162°C, shrinking its volume by 600 times. This turns it into a clear, colourless, non-toxic liquid - liquefied natural gas, or LNG – that is much easier to store and transport.
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Can you liquify natural gas under pressure?

It can be stored by maintaining the liquid under pressure, about 100 psig. Natural gas is a fossil fuel that is gathered mainly by drilling, similar to drilling for oil. Once natural gas is collected it can be processed and cooled to approximately -260 F, at which time it changes to a liquid and becomes LNG.
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What is LNG? Turning natural gas into liquid | Natural Gas



Which gas is most easy to liquify?

Sulphur dioxide is easily liquifiable here. Was this answer helpful?
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Is natural gas a liquid in pipelines?

Oil pipelines are made from steel or plastic tubes which are usually buried. The oil is moved through the pipelines by pump stations along the pipeline. Natural gas (and similar gaseous fuels) are pressurized into liquids known as Natural Gas Liquids (NGLs). Natural gas pipelines are constructed of carbon steel.
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What temperature does natural gas freeze?

A pipe containing natural gas would have to get extremely cold to freeze – actually about 296.7° degrees Fahrenheit – and would need to be struck with a sledgehammer before there would be any possibility of it breaking.
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How do they keep LNG cold?

Although there is efficient insulation, heat still enters the tank. This causes a small amount of LNG top “boil off.” This keeps the LNG cold through a process called “autorefrigeration.” Small amounts of LNG are continually boiling and being removed from the tank.
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What conditions are needed to convert a gas into a liquid?

The liquid can be changed in phase transformation to a gas by evaporation and a gaseous phase can be changed into liquid by condensation under conditions of high pressure and low temperature. E.g. to change an everyday gas such as nitrogen into a liquid we need to cool it down below about −200oC.
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Can natural gas be bottled?

Natural gas can be stored in natural gas bottles as either CNG – Compressed Natural Gas – or as LNG – Liquefied Natural Gas. CNG gas is distributed in natural gas bottles. A natural gas bottle (methane bottle) is different from an LPG cylinder including much higher pressure and a lower energy content.
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What is the storage temperature for LNG?

LNG must be maintained cold (at least below -177°F [-83°C]) to remain a liquid, independent of pressure.
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Can you store natural gas in a propane tank?

Natural gas is not stored in household tanks because the symmetry of its molecule makes it hard to liquify. You could store methane in a tank in the gas state but it has such low density in the gas state that you could not store a usable amount.
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How boil off from LNG is handled?

Handling the pressure

To relieve the pressure in the LNG tanks, the BOG can be re-liquefied on board vessels, used as fuel, or burned in a gasification unit. Reliquefaction occurs when evaporated LNG is cooled and reverted to its liquid state.
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Is LNG cryogenic?

LNG is a clear, odorless, non-toxic, non-corrosive, cryogenic liquid at atmospheric pressure.
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What is the difference between LPG and LNG?

LPG is stored, shipped and transported in tanks or cylinders, whereas LNG is stored and shipped in purpose built cryogenic tanks. Pipelines are usually used to transport LNG.
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Does natural gas freeze up?

“As a rule, natural gas does not freeze.” It's also true that natural gas pipelines are required to be buried underground by the U.S. Department of Transportation, and all of Energy Transfer's 43,500 miles of Texas pipeline meet the U.S. Department of Transportation's minimum depth standard of 3 feet, the company said.
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Can a natural gas well freeze?

Freezing can occur not only when water in the gas stream mixes with temperatures below 32 degrees Fahrenheit, but also with the presence of hydrates well above the freezing mark. Freezing can occur in natural gas from gas wells and from produced gas from crude oil wells.
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What is the temperature of natural gas in a pipeline?

The range of pressure and temperature conditions is characteristic for natural gas industry (i.e. 0.1–25 MPa, −20–90 degrC, which corresponds to the reduced pressure and temperature ranges 0.02–5.5 and 1.3–1.9, respectively.)
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Is natural gas wet or dry?

The natural gas used in homes and business for heating, cooling, cooking and electricity generation is dry gas. It can also be compressed and used as a fuel. Before natural gas is used, whether wet or dry, it must be processed to remove hydrocarbons other than methane before the gas is introduced to pipelines.
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Why does natural gas smell like rotten eggs?

Natural gas is an efficient, safe, colorless and odorless gas. For easy detection, we add a harmless chemical called mercaptan to give gas a distinctive odor. Most people describe the smell as rotten eggs or hydrogen sulfide like odor.
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How deep is a natural gas pipeline buried?

Service lines on distribution systems must be 12 inches deep on private property, and 18 inches deep along roads and streets. The depth of burial is just for installation, and there is nothing in the federal regulations that requires this depth be maintained over time.
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Can gas be liquefied at critical temperature?

The critical temperature is temperature above which the gas cannot be liquefied by pressure alone. Now, if we want to convert a gas into liquid, we have to decrease the temperature below the critical temperature because if gas works against an external force, it starts losing energy and converts into the liquid state.
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Which gas is most difficult to liquefy and why?

Helium is the most difficult of all gases to liquefy and is impossible to solidify at normal atmospheric pressures. These properties make liquid helium extremely useful as a refrigerant and for experimental work in producing and measuring temperatures close to absolute zero.
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What gases dont have?

Gases don't have a fixed shape or a fixed volume. The particles move around all the time and spread out. This is why a gas fills its container. A gas can be compressed into a very small space – this pushes the particles closer together.
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