Cradle to Gate
Identity ID
0bf0a15d-1d62-4ceb-8de6-bbda8e828f7a
Materials
Associated ID
f9a722c4-7452-451f-97e1-46631302fddb
Included activities starts
Included activities ends
Description
Potassium hydroxide is widely used in fields such as the soap industry, petroleum refining, papermaking, dyeing, leather tanning and pharmaceutical organic synthesis; Potassium hydroxide is modelled as a pure substance; when modelling this substance, the user is required to add a solvent of their choice in the model. The dataset includes the main raw and auxiliary materials, energy, wastes and atmospheric emissions of the production process, while infrastructure such as the manufacture of production equipment 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 salt dissolving and primary brine refining, secondary brine refining, electrolysis and other process steps. Hydrogen and chlorine are by-products of this production process, allocated by mass.
Activity Description
The production activities of this product include salt dissolution, primary brine refining, secondary brine refining, electrolysis and other processes.
Process Description
The chemical formula of potassium hydroxide is KOH, and its CAS number is 1310-58-3. Easily soluble in water, ethanol, glycerin, insoluble in acetone, stable at room temperature. When meeting water and water vapor, it releases a lot of heat and forms a corrosive solution. It is widely used in soap industry, petroleum refining, papermaking, dyeing, tanning, pharmaceutical organic synthesis and other fields.
Time period
2022
2026
Geography
China
Macroeconomic value
Business-as-Usual
Data validation
Yes
Technology
Current Technology
Technology comment
The ion membrane electrolysis method is an advanced mainstream technology for potassium hydroxide production. Compared with the traditional diaphragm method, it has the advantages of low energy consumption and high product purity. It has gradually achieved full replacement and accounts for more than 90% of the domestic potassium hydroxide market. This data set represents this mainstream technology: the raw materials undergo salt dissolution, primary refining, and secondary refining before entering the electrolytic cell for electrolysis to produce potassium hydroxide, hydrogen, and chlorine. The main chemical reaction equation is: 2KCl + 2H2O → 2KOH + Cl2↑ + H2↑ (under electrolysis).