What technologies are available to remove methyl sulfide from liquefied gas?
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About 10 ppm of dimethyl sulfide is found in liquefied gas; are there any methods available to remove it?
What is it specifically used for? Is it added so that people can smell it? Is that so? I still don’t understand.
For the advanced processing of saturated liquefied gas, the total sulfur content must be below 3 ppm.
No, does it just need to turn into a solid sulfide?
There are many methods such as adsorption and hydrogenation; it depends on the costs and requirements you are willing to accept.
Hydrogenation is possible, but it is not cost-effective for small-scale installations. Are there any examples of successful industrial applications for the adsorption method you mentioned? What is the investment required for saturated liquefied gas adsorption desulfurization at a capacity of 100,000 tons per year? What is the approximate cost of desulfurizing each ton of liquefied gas, to reduce the sulfur content from 50 ppm to 3 ppm?
I was previously involved in a small-scale propylene desulfurization project at the East China University of Petroleum; it was possible to reduce the sulfur content from 30 to below 10. The plant had a capacity of 10,000 tons per year, and the cost was around 30 yuan per ton. It seems that modified activated carbon adsorption is being used. You can ask; it should be Director Liu Xinmei’s technique.