Cradle to Gate
Identity ID
a2eee749-70bc-4d42-9296-f63fe182b7ea
Materials
Associated ID
922411b8-2918-4064-852e-9667bf404915
Included activities starts
Included activities ends
Description
Sulfamic acid is widely used in fields such as the textile industry, the papermaking industry, agriculture, the petroleum industry, the electroplating industry and cleaning agents; Sulfamic acid 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 sulfonation reaction, dilution and filtration, dissolution and filtration collection, crystallization and centrifugation, drying and cooling screening and other process steps.
Activity Description
The production activities of this product include sulfonation reaction, dilution filtration, dissolution filtration collection, crystallization centrifugation, drying, cooling and screening and other processes.
Process Description
The chemical formula of sulfamic acid is NH2SO3H, CAS number is 5329-14-6. It is an inorganic solid acid formed by replacing the hydroxyl group of sulfate with an amino group. It is generally a white, odorless rhombic flake crystal. The aqueous solution of sulfamic acid has the same strong acidity as hydrochloric acid and sulfuric acid, so it is also called solid sulfuric acid. It is non-volatile, odorless and has low toxicity to the human body. Sulfamic acid is widely used in the textile industry, paper industry, agriculture, petroleum industry, electroplating industry and other fields, and can also be used in cleaning agents.
Time period
2023
2026
Geography
China
Macroeconomic value
Business-as-Usual
Data validation
Yes
Technology
Current Technology
Technology comment
The urea method is a mainstream mature technology for preparing sulfamic acid. It has strong process stability and occupies a leading market share in the domestic sulfamic acid production field. It is both advanced and industrially representative. This data set represents this mainstream technology: fuming sulfuric acid and urea are added to the sulfonation reactor for reaction, and the temperature is controlled by circulating cooling water to reduce the occurrence of side reactions; the reaction solution is washed with fresh water and sulfuric acid solution and then filtered to obtain a crude product; the crude product is dissolved and filtered, crystallized and centrifuged, and finally dried, cooled and screened to obtain the finished product. The chemical reaction equation involved is mainly: (NH2)2CO + H2SO4 + SO3 → 2NH2SO3H + CO2