What factors affect the purity of acetylene?
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What factors affect the purity of acetylene gas after purification? The purity we require is above 99.50%. Is it only influenced by hydrogen sulfide and phosphine gases? I ask this because if the purification tower does not remove sulfur and phosphorus thoroughly, will it affect the purity?
It depends on the process used by you to produce acetylene. If acetylene is produced by the calcium carbide method, the main impurities in the acetylene gas are acidic gases such as hydrogen sulfide, phosphine, and carbon dioxide generated from the reaction of calcium carbide with water, along with small amounts of silicon compounds, nitrides, and other substances. If the quality of calcium carbide is not very poor, it is generally sufficient to focus only on removing hydrogen sulfide and phosphine. The purity can reach 99.9
Personally, I believe that the insufficient purity is mainly due to nitrogen, followed by oxygen; the water content varies depending on the purification process used. Hydrogen sulfide and phosphine are at the ppm level, so they have little impact on purity.
Yes, it should mainly be nitrogen. The others are all at the PPM level, with little impact on purity.
It is likely mainly affected by nitrogen; it depends on whether nitrogen enters the system during the replacement process of the generator’s storage tank, as well as whether the storage tank beneath the generator is protected by nitrogen. Also, check whether pressure swing adsorption gas is entering the system.
Whether to use a dry or wet method depends on many factors; let’s first discuss the process flow and then analyze it