Regarding the hydrogenation cracking cycle hydrogen
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Under normal production conditions, the circulating hydrogen level is below 85%; no waste hydrogen is released. What will happen – will it be a decrease in hydrogen partial pressure and the hydrogen-to-oil ratio? The reaction tends to coking, is that correct? Not fully reflected.
Without the emission of waste hydrogen, there will be an increasing amount of hydrocarbons and hydrogen sulfide in the recycled hydrogen. On one hand, this reduces the efficiency of the recycling machine; on the other hand, as you mentioned, it lowers the hydrogen-to-oil ratio in the reaction. A lower hydrogen-to-oil ratio can lead to incomplete reactions and also facilitate catalyst coking.
Both pressure and temperature increases can reduce catalyst coking, preventing the reaction from proceeding; furthermore, all quality parameters of the product fail to meet the required standards
The compressor’s energy consumption is increasing; otherwise, let’s install a set for hydrogen desulfurization in the cycle