LNG Liquefaction

LNG Liquefaction



Austin, Texas


LNG Liquefaction


What is LNG Liquefaction?

LNG Liquefaction is a process that refrigerates Natural Gas until it is condensed into a liquid at close to atmospheric pressure (maximum transport pressure set at around 25 kPa/3.6 psi) by the natural gas to approximately −162 °C (−260 °F) which reduces its volume to 1/600th or its original volume for ease of transportation.

Liquefied Natural Gas or simply "LNG" is natural gas which is primarily methane or CH4 that has been liquefied to reduce its volume. As previously stated, LNG is colorless, odorless, non-toxic and non-corrosive. LNG hazards include flammability, freezing and asphyxia.

The LNG Liquefaction takes place at an LNG terminal, typically located at an ocean port where one or more natural gas pipelines deliver natural gas. The natural gas has had the contaminants removed by gas processing and purification, which removes, condensates such as water, dust, helium, mud, oil, CO2, H2S and mercury. The natural gas is then cooled down in stages until it is finally liquefied at -160 degrees C. The Liquefied Natural Gas is stored in cryogenic storage tanks and loaded onto an LNG ship and shipped.


Gas Liquefaction Plant
LNG Liquefaction plant


LNG Liquefaction

Amine Units  *  Casinghead Gas  *  Compressed Natural Gas  *  Diesel to Natural Gas  *  Diesel to CNG  *  Diesel to LNG

Electric Compression  *  Gas Compressors  *  Gas Dehydration  *  Gas Gathering  *  Gas Liquefaction  *  Gas Processing

Gas Sweetening  *  H2S Removal  *  Heater Treaters  *  Iron Sponge  *  Liquefied Natural Gas  *  Midstream Oil and Gas

Natural Gas Treating  *  Upstream Oil and Gas  * Pipeline Compression  *  Stranded Gas  *  Vapor Recovery  *  Waste Heat Recovery












Additional Resources

Biomethane  *  Casinghead Gas  *  CO2 Injection  *  Compressed Natural Gas    *  Diesel to Natural Gas  *  Diesel to CNG

  Diesel to LNG  *  Electric Compression  *  Enhanced Gas Recovery  *  Flare Gas Recovery  *  Fuel Gas Boosters

Fuel Switching  *  Gas Compression  *  Gas Compressor Sales  *  Gas Compressors  *  Gas Gathering  *  Gas Liquefaction

Gas To Power  *  Liquefied Natural Gas  *  LNG Liquefaction  *  Midstream Oil and Gas  *  Pipeline Compression

Renewable Natural Gas  *  Stranded Gas  *  Waste Heat Recovery  *  Wellhead Gas


What is an Amine Unit?

An amine unit - also referred to as an "amine plant," is used for "gas sweetening" in the "gas processing" sector of the Midstream Oil and Gas sector.

Amine units provide H2S removal as well as CO2 removal from natural gas and liquid hydrocarbons. The process involves both absorption and chemical reactions.

What is NGL Recovery?

Toward the end of the gas processing process and natural gas treating process, wherein the "raw" natural gas (methane or CH4) is readied for sale as "pipeline quality gas," the recovery of the valuable natural gas liquids (NGL) takes place. In many gas processing facilities, a cryogenic plant - which provides low-temperature distillation that recovers the natural gas liquids. The residue gas from the NGL recovery process, is the purified pipeline quality gas that is sold via pipeline and sent so end-users such as LDCs (local distribution companies - or natural gas utility) for distribution via natural gas mains in their cities and markets.

Other NGL recovery methods include an NGL fractionation "train" which typically consists of three distillation towers in a series. The series occurs in the following order:

1. deethanizer
2. depropanizer
3. debutanizer.

The overhead product from the deethanizer is ethane - after which the bottoms flow to the depropanizer. The overhead product from the depropanizer is propane and the bottoms then flow to the debutanizer. The overhead product from the debutanizer is a mixture of normal butane and iso-butane. The bottoms products are a C5+ mixture. Most cryogenic plants, however, do not include fractionation due to economic reasons. Therefore the NGL stream is then transported as a mixed product to separate, standalone fractionation plants that are located near refineries or chemical plants that need these NGLs feedstock.

What is "NGL Fractionation"?

NGL, or natural gas liquids fractionation plants purpose is to separate the mixed natural gas liquids stream into separated products. These natural gas liquids that are separated by heat at NGL Fractionation plants include; ethane, propane, normal butane, isobutane and natural gasoline.


LNG Liquefaction

Absorption Chillers  *  CHP Systems  *  Enhanced Oil Recovery
   *  Gas to Power  *  Midstream Oil and Gas
Steam Injection
  *  Upstream Oil and Gas  *  Waste Heat Recovery  *  Waste Heat Boilers


We deliver solutions:

Increased sales
New customers
Greater market share
Competitive advantage
Increased shareholder value


Amine Units  *  BTEX Removal  *  CHP Systems  *  Emissions Abatement  *  Enhanced Gas Recovery

Enhanced Oil Recovery  *  Gas Dehydration  *  Gas Gathering  *  Gas Sweetening  *  Gas To Power

H2S Removal  *  Midstream Oil And Gas  *  Natural Gas Treating  *  Pipeline Quality Gas

Stranded Gas  *  Waste Heat Recovery


American Energy Plan

3-5 million new jobs
Fuel Savings of > $1.50/gallon
American Energy Independence
Ends the worst economic depression of all time






“spending hundreds and hundreds and hundreds of billions of dollars every year for oil, much of it from the Middle East, is just about the single stupidest thing that modern society could possibly do.  It’s very difficult to think of anything more idiotic than that.” 
~ R. James Woolsey, Jr., former Director of the CIA

Price of Addiction
to Foreign Oil

According to R. James Woolsey, for Director of the Central Intelligence Agency, “The basic insight is to realize that global warming, the geopolitics of oil, and warfare in the Persian Gulf are not separate problems — they are aspects of a single problem, the West’s dependence on oil.”  



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