Gas desulfurization process
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Hello seniors, I would like to inquire about the desulfurization process. The gas source comes from flue gas, and direct compression will cause the sulfide content in the final gas to exceed the standard, affecting use. Desulfurization can be carried out before recompression, the pressure is about ≤1bar, the temperature is 30-45℃ ； It can also be desulfurized after compression. The gas pressure after compression is 22bar and the temperature is 30-45°C. What equipment is generally used for desulfurization under these two working conditions? What filler? Which one is better? What method does regeneration take?
What are the sulfur compounds in flue gas? Is it sulfur dioxide or hydrogen sulfide?
Both sulfur dioxide and hydrogen sulfide are present.
Activated carbon can remove hydrogen sulfide, etc., and can be regenerated and reused. I wonder how it is used in large-scale industrial production?
As for us, we are mainly proficient in dehydrating hydrogen sulfide. We have never dealt with sulfur dioxide, haha.
It is said that activated carbon can be used for hydrogen sulfide. What do you use?
Absorption is generally carried out under low temperature or normal temperature conditions. When hydrogen sulfide and sulfur dioxide are present in the flue gas at the same time, a crystallization reaction will occur at low temperature. The one I know is to use MDEA amine liquid to absorb hydrogen sulfide, and after regeneration, return it to the sulfur acid gas furnace to produce sulfur. ； The other is to use ionic amine liquid to absorb sulfur dioxide, and the regenerated sulfur dioxide is also returned to the sulfur acid gas furnace for sulfur production. If feasible, all hydrogen sulfide in the flue gas can be converted into sulfur dioxide for absorption and regeneration after high-temperature combustion. ； The sulfur dioxide in the flue gas can also be hydrogenated and converted into hydrogen sulfide, and then absorbed and regenerated.
What we deal with is pure hydrogen sulfide and complex iron technology. You can check it online.
What is the effect of using it? To be honest, activated carbon is average, and there are good ones. It is said that the adsorption capacity is more than three times that of ordinary ones, but it is very expensive.
We are complex iron. Please check it out.
Use MDEA solvent to remove hydrogen sulfide. If regenerated, remove the solvent for regeneration. However, we use alkali liquid for flue gas desulfurization.