What is the purpose of strictly controlling the metal content in crude oil?
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What is the purpose of strictly controlling the metal content in crude oil?
High levels of sodium, nickel, and iron are very detrimental to the catalyst.
Metal impurities are catalyst poisons that cause permanent poisoning; the catalyst cannot regain its activity through regeneration. In fixed-bed reactors, they also increase the pressure drop in the reactor, leading to shutdowns for pressure relief
It is meaningless to strictly control the metal content in crude oil.
These metals accumulate on the surface of the catalyst, increasing the pressure drop in the reaction system! It affects the stable operation of the reaction system, impairs the catalyst’s activity, and can even cause the catalyst to experience flow deviation; at the same time, the increased pressure drop can damage the catalyst or the internal components!