Which Desulfurization Product Should You Choose?

To find the most suitable solution, you need to focus on the following aspects:

Define the Type of Processing Item

Gas Feed Desulfurization: If you are processing gaseous or liquid hydrocarbon feedstocks such as natural gas, coal gas, or naphtha in the chemical or energy sector, and the goal is to protect downstream catalysts or meet product specifications, you should choose a refined desulfurizer, such as zinc oxide, nickel-copper, or iron oxide desulfurizers. In this case, you need to pay attention to its precision (ability to reduce sulfur content to ppm or even ppb levels) and sulfur capacity.

Industrial Flue Gas Desulfurization: If you are treating flue gas generated after combustion in boilers, kilns, etc., to meet environmental emission requirements, you should choose a flue gas desulfurization process, such as SDS dry method or ammonia method. At this stage, it's crucial to monitor desulfurization efficiency (≥95%), compliance with emission standards, and the presence of secondary pollution such as wastewater and waste residue.

Pay attention to the types and concentrations of sulfides.

Different desulfurizing agents have varying removal capabilities for hydrogen sulfide (H₂S), organic sulfur (such as COS), and sulfur dioxide (SO₂). For example, zinc oxide desulfurizers are highly effective at removing H₂S; while some specialized catalysts can simultaneously treat multiple impurities such as sulfur, arsenic, and chlorine.

The initial sulfur concentration in the feedstock and the target concentration to be achieved are critical parameters. For instance, HTSR-1 can reduce sulfur concentration from 100 ppm to below 0.5 ppm, while the SDS process can treat flue gas with emission standards below 30 mg/m³.

Consider process conditions and costs.

Consider the temperature and pressure conditions under which the desulfurization reaction occurs, ensuring the selected product is within its applicable range.

Evaluate the overall cost, including the cost of the desulfurizing agent itself, operating energy consumption, equipment investment, and maintenance costs. For example, the SDS dry process is simple and produces no wastewater, while the ammonia process may enable the resource utilization of byproducts.