The impact of impurities such as nitrogen oxides, carbon dioxide, carbon monoxide, and hydrogen sulfide on the deep cryogenic separation system in ethylene plants.
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In the process of optimizing refining and cracking feedstocks, it is common to want to separate the desired components directly in the gas cooling and separation section. However, the feedstocks often contain impurity gases such as nitrogen oxides, carbon dioxide, carbon monoxide, and hydrogen sulfide. When these impurities enter the deep cooling separation system, they may accumulate or remain in various equipment, affecting the operation of the system or the quality of the resulting products. But that impact is something very difficult to determine accurately; I wonder if anyone here understands it. Please share your opinions.
This post was last edited by 276957697 on 2011-7-17 at 10:35. These components can be determined whether to allow them into the separation system by analyzing the data from the alkaline scrubber; carbon monoxide entering the separation system can cause excessive temperature rise in the methanation reactor, carbon dioxide affects the quality of ethylene products, and hydrogen sulfide can poison the catalysts in the hydrogenation reactors. These components must be removed using the alkaline scrubber, which is why its proper operation is very important