Cradle to Gate
Identity ID
03ddd55c-2487-4474-b1c7-ad541f2b74cf
Materials
Associated ID
4523e447-4ec5-45e9-b608-974a192a98c7
Included activities starts
Included activities ends
Description
In industrial production, hydrogen sulfide is often used in the flotation process of sulfide ores, and is also an important raw material for producing sulfur and sulfuric acid; The dataset includes the main raw and auxiliary materials and energy of the production process; owing to data availability, atmospheric emissions, wastewater and solid waste are not included; 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 sulfur feeding, evaporation, reaction, removal of polysulfides and other processes.
Activity Description
The production process of this product includes sulfur feeding, evaporation, reaction, polysulfide removal, and other steps.
Process Description
Hydrogen sulfide, chemical formula: H2S, CAS number is 7783-06-4. A colorless and highly toxic acidic gas with no obvious odor at high concentrations and a strong smell of rotten eggs at low concentrations. It can be dissolved in water and easily soluble in alcohol and petroleum solvents. In addition, hydrogen sulfide can form an explosive mixture with air, which can cause combustion or even explosion when exposed to open flames or high heat. It is often used in the flotation process of sulfide ores in industrial production and is also an important raw material for the production of sulfur and sulfuric acid.
Time period
2011
2026
Geography
China
Macroeconomic value
Business-as-Usual
Data validation
Yes
Technology
Current Technology
Technology comment
The hydrogen sulfide production process uses liquid sulfur as raw material, which is transported to the sulfur evaporator by a liquid sulfur pump; hydrogen and sulfur vapor undergo a strong exothermic reaction in the synthesis tower to produce hydrogen sulfide; the gas is cooled, stripped of trace sulfur and polysulfides, and refined to obtain 99.9% hydrogen sulfide, with unreacted hydrogen recycled back to the synthesis tower. The core chemical reaction equation of this process is: S8+8H2=8H2S.