Which hydrogen sulfide removal method is the most advantageous?

It’s pointless to compare advantages and disadvantages without considering concentration, processing volume, and site conditions; if it’s possible to make such comparisons, then those that are inferior would have no reason to exist

1. Dry method: Catalysts such as ZnO and Fe2O3 are commonly used for treatment; adsorption methods can also be employed. This method handles a small volume of material, but it is important for deep desulfurization and high-purity desulfurization. 2. Wet method: Alkylamine is commonly used for removal; it can handle large volumes of material, but the removal efficiency is not as high as that of the dry method. The specific method needs to be determined based on the H2S content and composition in the gas; generally, a combination of wet and dry methods is used to achieve thorough desulfurization. 3. Biological method: Less used in industry, with a small processing capacity, but holds promise for research. Sulfur recovery: The technologies of Jiangnan Environmental Protection or Shandong Sanwei can be considered, as they have extensive industrial implementation experience.

Currently, the wet process for acid production is a trend

Dry desulfurization offers good results; the hydrogen sulfide level can be reduced to a few mg/nm3, and it features a high degree of automation