Cradle to Gate
Identity ID
aa55e3b2-4633-4682-a281-97d7e262f5bf
Materials
Associated ID
53a6729d-94a9-48df-982a-6384f360931c
Included activities starts
Included activities ends
Description
Potassium carbonate is an important basic chemical raw material, widely used in key fields such as glass manufacture, fertilisers, food additives and the electronics industry; the dataset models potassium carbonate as a pure substance, and when modelling this substance the user needs to add a solvent of their choice in the model; the dataset contains the main raw and auxiliary materials, energy, atmospheric emissions and waste of the production process, and infrastructure such as the manufacture of production equipment and the construction of plant buildings is not included within the dataset boundary; of the CO2 feedstock used in the carbonation reaction in the inventory, 28.4% comes from waste gas, and this portion is treated as a burden-free input; the data inventory is formed by merging data from multiple sources; the production activities of this product include the carbonation reaction of liquefied carbon dioxide and flue gas with potassium hydroxide, in which the carbonation process of liquefied carbon dioxide includes carbonation, crystallisation and centrifugation, drying and screening, and the carbonation process of flue gas includes flue gas treatment, preheating and evaporation, centrifugation, drying and screening.
Activity Description
The production activities of this product include the carbonization reaction of liquefied carbon dioxide and flue gas with potassium hydroxide. The carbonization process of liquefied carbon dioxide includes carbonization, crystallization centrifugation, drying, screening, and other processes. The carbonization process of flue gas includes flue gas treatment, preheating evaporation, centrifugation, drying, screening, and other processes.
Process Description
Potassium carbonate (CAS No.: 584-08-7) is a white crystalline powder or granule with the chemical formula K2CO3. It is easily soluble in water and forms a strong alkaline solution. It absorbs moisture and deliquesces easily in the air. As an important alkaline inorganic chemical raw material, potassium carbonate can lower the melting point of glass and improve transparency in glass manufacturing. It is a key component of optical glass and TV picture tube glass shells. It is used in the food industry as an acidity regulator for noodles and wonton wrappers, giving the noodle products unique elasticity and taste. In the agricultural field, it is used as a high-efficiency potassium fertilizer to supplement soil potassium. This compound is also widely used in the production of dyes, ceramic glazes, rubber antioxidants and other products. In traditional crafts, it is an indispensable raw material for making alkaline rice dumplings.
Time period
2021
2026
Geography
China
Macroeconomic value
Business-as-Usual
Data validation
Yes
Technology
Current Technology
Technology comment
Potassium hydroxide is usually obtained by electrolysis of potassium chloride. From the perspective of a large-scale, integrated industrial production system, the complete process flow of potassium carbonate production is: electrolysis of potassium chloride → producing potassium hydroxide → (carbonation process) introducing CO₂ → producing potassium carbonate. The carbonation process is one of the core processes. The principle of the carbonation reaction is: 2KOH + CO₂ → K₂CO₃ + H₂O.