Hydrogen sulfide removal methods

This post was last edited by zjing80 on 2016-10-17 at 15:46. Hydrogen sulfide removal can be divided into two main categories: dry desulfurization and wet desulfurization. Dry desulfurization is generally used for precise removal, but it involves higher costs; wet desulfurization is typically used for rough removal, although it can also be employed for precise removal when the requirements regarding hydrogen sulfide levels are not very high. Desulfurization agents for dry desulfurization include iron oxide, activated carbon, zinc oxide, etc. If wet flue gas desulfurization is to be regenerated, it can use ammonia water and sodium carbonate as alkaline solutions, along with a catalyst, for removal. The applications of hydrogen sulfide removal are extremely widespread; for example, it is used in many industries such as ammonia synthesis, non-ferrous metal processing, and ceramic firing. The desulfurization methods I’ve mentioned are all technologies that have been developed over several decades. Many manufacturers in China are engaged in this activity. However, wet flue gas desulfurization places high demands on manufacturers; those without experience may encounter numerous issues with their equipment, so this point should be taken into account. If it’s not convenient for the manufacturer to send it, they can message me privately.

Thank you, moderator. I’m mainly interested in wet flue gas desulfurization; you’ve covered quite a lot on that topic. I’d also like to learn more about non-regenerative processes. Also, I wasn’t very familiar with the guidelines before; I will definitely keep them in mind from now on.

If a non-regenerative process is used, as far as I know, there are many disadvantages: the salt produced is difficult to handle and the costs are high. If hydrogen sulfide is to be removed using a wet process, I still recommend a regenerative process; for very small quantities, a dry process can also be used.

Thank you: handshake. Could the moderator share some materials so that we can start learning first? *learn*

I’ll look for the materials and send them out if I get the chance

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It depends on your industry. If the sulfur content in the biogas is high and the flow rate is low, then for long-term operation, the wet method results in lower operating costs compared to the dry method. When biogas is used for purification, wet desulfurization is usually carried out first, followed by dry purification. We specialize in this area; feel free to message me if you have any questions.