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Does changes in gas temperature affect desulfurization efficiency?

2015-07-24View Original

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Does changes in gas temperature affect desulfurization efficiency? What is the reason? Please help analyze it
Reply #22015-07-24
It should be possible; the raw gas supplied by the upstream unit is usually at 40 degrees, and it needs to be cooled before being sent over. If it’s too high, the absorption effect may be poor.
Reply #32015-07-25
Water transportation, heat consumption, and work consumption of the ice machine
Reply #42015-07-25
The effect of absorption temperature on desulfurization efficiency: The reaction of ammonia water absorbing hydrogen sulfide is an exothermic reaction. Increasing the temperature raises the partial pressure of hydrogen sulfide in the washing liquid, which shifts the equilibrium of the desulfurization reaction to the left, thereby hindering the absorption of hydrogen sulfide by ammonia. Therefore, the temperature of the washing liquid and the operating temperature should be kept as low as possible. The absorption temperature in the desulfurization tower is primarily determined by the temperature of the gas after final cooling and the temperature of the acid-removed lean liquid. Production experience shows that for every increase of 2–3°C in the washing temperature, the desulfurization efficiency decreases by about 4%–5%. Temperature has a significant impact on the desulfurization process, and it should generally be kept at around 21±1°C.
Reply #52015-07-27
Thank you all :P:P:P:P I’m making adjustments right now
Reply #62015-07-31
The gas temperature directly affects the desulfurization and regeneration temperatures, and it also has a significant impact on side reactions.
Reply #72015-08-05
It will definitely have an impact. The principle is that the higher the temperature, the lower the solubility of gases, which in turn affects the desulfurization efficiency. To address this phenomenon, it is necessary to lower the gas temperature or increase the circulation rate of the desulfurization liquid.
Reply #82015-08-08
No. Sulfur in gas exists mainly in the form of hydrogen sulfide. The desulfurization methods I have used are primarily tannin-based desulfurization and desulfurization using specialized desulfurizing agents. The component with the highest content in the desulfurization solution is soda ash, sodium carbonate. It is actually the tar present in the gas that affects the efficiency of desulfurization; if the tar in the gas is not removed thoroughly before desulfurization, it will impact the efficiency of the desulfurization process.

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