Cradle to Gate
Identity ID
652dd3dc-d33f-449d-88f4-68e36ab869d5
Materials
Associated ID
48568171-8c95-44af-9ba3-d81a65e6278e
Included activities starts
Included activities ends
Description
This dataset represents the production of 1 kg of liquid carbon dioxide from the waste gases generated by different production processes; the carbon dioxide is obtained without environmental burden, as it is considered a waste gas of other production processes; carbon dioxide is widely used in fields such as carbonated beverages, food preservation, chemical production, welding shielding gas, fire extinguishing and agricultural gas fertiliser; it is modelled as a pure substance, and when modelling this substance, users need to add a solvent of their choice in the model; the dataset contains the main materials, energy, waste and atmospheric emissions of the process of producing liquid carbon dioxide from the waste gases of different production processes; infrastructure such as production equipment manufacturing and plant construction is not included within the dataset boundary; the data inventory is formed by merging data from multiple sources; the production activities of this product include processes such as desulphurisation, dehydration, rectification, filling and freezing of the carbon dioxide waste gas generated by different production processes.
Activity Description
The production activities of this product include desulfurization, dehydration, distillation, filling, freezing and other processes for carbon dioxide waste gas generated in different production processes.
Process Description
The chemical formula of carbon dioxide is CO2, CAS number 124-38-9. It is a colorless, odorless and tasteless gas under normal temperature and pressure. The liquid form is a colorless and transparent liquid, and the solid form (dry ice) is a white snowflake or block solid. It is soluble in water and has a density of about 1.98 g/L under standard conditions, which is larger than air. It has stable chemical properties, does not react easily with other substances at room temperature, and does not support combustion (except for a few metals such as magnesium). Industrially, it is widely used in the food industry (as carbonated beverage additives, food preservatives, and dry ice for low-temperature refrigerated transportation), chemical production (preparation of chemical products such as sodium carbonate, urea, etc.), and also used for welding protective gas, fire extinguishing (carbon dioxide fire extinguishers); in agriculture, it can be used as gas fertilizer to promote photosynthesis of greenhouse crops.
Time period
2020
2026
Geography
China
Macroeconomic value
Business-as-Usual
Data validation
Yes
Technology
Current Technology
Technology comment
Cryogenic distillation is the mainstream technology for the preparation of high-purity liquid carbon dioxide. It is produced through the distillation and purification of industrial exhaust gas or synthesis gas. The product purity can reach more than 99.9%, accounting for more than 80% of the domestic liquid carbon dioxide market. This data set represents this mainstream technology: the raw gas is first desulfurized, then dried through molecular sieves, and then passed through two distillations and subcooling to obtain qualified liquid carbon dioxide finished products.