Cradle to Gate
Identity ID
d079eecc-2f9d-473e-a2a3-98ffeb3a9b64
Materials
Associated ID
2f10ace4-6eb4-4a33-aefe-76953454078a
Included activities starts
Included activities ends
Description
This dataset represents the natural gas liquefaction process using mixed refrigerant cooling, but does not include associated production facilities and infrastructure. The specific process flow is as follows: raw natural gas from the pipeline network enters the purification system after natural gas metering, successively removing impurities such as CO2, H2S, H2O, Hg, and aromatic hydrocarbons. After purification, the natural gas is fed into the liquefaction cold box, where it undergoes stepwise pre-cooling, liquefaction, and sub-cooling through heat exchange with mixed refrigerant in plate-fin units. The liquefied natural gas exiting the cold box is then throttled and sent into the LNG storage tank.
Activity Description
The production activity boundary of this product involves liquefied natural gas processing.
Process Description
Liquefied natural gas (LNG) is a cryogenic liquid fluid primarily composed of methane, potentially containing small amounts of ethane, propane, nitrogen, or other components commonly present in natural gas.
Time period
2018
2026
Geography
China
Macroeconomic value
Business-as-Usual
Data validation
Yes
Technology
Current Technology
Technology comment
The natural gas is liquefied using a mixed refrigerant refrigeration process. The specific process flow is as follows: the raw natural gas from the pipeline enters the purification system after metering, where CO2, H2S, H2O, Hg, aromatic hydrocarbons, and other impurities are sequentially removed. The purified natural gas is then fed into the liquefaction cold box, where it undergoes stepwise pre-cooling, liquefaction, and subcooling through heat exchange with the mixed refrigerant in the plate-fin units of the cold box. After exiting the cold box, the liquefied natural gas undergoes throttling and is subsequently transferred into the LNG storage tank.