Cradle to Consumer
Identity ID
f0790835-5d12-4aae-ae5c-aa56f1e6bece
Materials
Associated ID
b49f39ef-cf8b-4fb7-b177-d60bd26b444d
Included activities starts
Included activities ends
Description
This dataset is a market dataset, representing the consumption market of the region; the dataset includes the transport of the product from the gate to the consumer end, and the transport service is calculated according to the transport situation of this product in this region. Nitrogen is widely used in fields such as grain storage, industrial protective gas, nitric acid, nitrogen fertiliser, food preservatives and refrigerants; Nitrogen is modelled as a pure substance; when modelling this substance the user needs to add a solvent of their choice in the model.
Activity Description
Nitrogen is produced primarily as a by-product in cryogenic air separation production, with liquid oxygen being the reference product; the nitrogen is then emitted directly into the atmosphere or converted into a marketable product for sale.
Process Description
The chemical formula of nitrogen is N2, CAS number 7727-37-9. It is a colorless, odorless and tasteless gas under normal temperature and pressure. Its liquid form is a colorless and transparent liquid. The boiling point under standard atmospheric pressure is -196°C, the critical temperature is 126.2K, and the density is about 0.81g/cm3 (at -196°C). Hardly soluble in water, slightly less dense than air. It has stable chemical properties and is difficult to react with other substances at room temperature. It can participate in reactions such as ammonia synthesis at high temperatures. Nitrogen is the main component of air. It is used in agriculture to store grains to prevent insects, and in industry as a protective gas (such as welding and electronic manufacturing). It is also used to make nitric acid and nitrogen fertilizer. It can be used as a preservative in the food industry, and liquid nitrogen can also be used as a refrigerant.
Time period
2021
2026
Geography
China,Tianjin
Macroeconomic value
Business-as-Usual
Data validation
Yes
Technology
Current Technology
Technology comment
Cryogenic air separation is the absolute mainstream technology for large-scale production of liquid industrial gases (oxygen, nitrogen, argon, etc.). It has high technological maturity and stable product purity. It accounts for more than 95% of the domestic liquid industrial gas market and is the core technology path for industrial gas supply. This data set represents this mainstream technology: the air enters the compressor after being filtered, is cooled by the pre-cooling system, and then enters the fractionation tower through the purification system to obtain liquid oxygen, liquid nitrogen, and liquid argon respectively; liquid oxygen is used as a reference product, and nitrogen is directly discharged into the atmosphere, or converted into marketable products for sale.