The hydrogen sulfide content in the circulating hydrogen is above the specified limit
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What are the common causes of excessive hydrogen sulfide levels in recycled hydrogen? What adjustments can be made to this device? Thank you! ! !
What type of hydrogenation unit do you have, and by how much does the hydrogen sulfide level exceed the limit? It must be due to the desulfurizer losing its effectiveness.
The problems with the cyclic hydrogen desulfurization tower, right?
1. The sulfur content in the raw materials is excessive (no recycle hydrogen desulfurization tower). 2. The circulation rate of the lean amine liquid in the cyclic hydrogen desulfurization tower is low, the concentration of the lean amine liquid is low, and the temperature of the lean amine liquid is high. 3. The opening degree of the bypass valve for circulating hydrogen entering the desulfurization tower is high. 4. The reaction depth varies significantly, and inadequate adjustments lead to substantial changes in the composition of the recycle gas. 5. High gas temperature and pressure fluctuations result in poor absorption and extraction efficiency. 6. The amine solution is dirty and foamy, or the actual liquid level in the circulating hydrogen desulfurization tower is low.
1. Poor regeneration efficiency of the desulfurization agent in the regeneration tower. 2. Increased sulfur content in the raw material. 3. High opening degree of the bypass line in the desulfurization tower
In the gasoline hydrogenation unit, the H2S content after amine treatment of the recycled hydrogen is 500 ppm, with little change in the concentration of rich and lean amine solutions
Does circulating hydrogen contain oil? ? ? ? ? ?