Stabilized hydrogenation method of coal liquefied oil
A coal liquefied oil, stable technology, applied in the preparation of liquid hydrocarbon mixtures, petroleum industry, refining to remove heteroatoms, etc., can solve the problems of catalyst deactivation, reactor pressure drop rise, shorten the start-up period, etc., to achieve extended start-up cycle, relieve the pressure drop from rising too fast, and improve the quality
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[0032] The test was carried out on a medium-sized expanded bed hydrogenation unit. The test raw material is coal liquefied oil, and the properties of raw oil, process conditions and product properties are listed in Table 1, Table 2 and Table 3, respectively. It can be seen from the table that under relatively mild operating conditions, the bromine value of the hydrogenation stable product is very low, indicating that most of the olefins in the coal liquefied oil are saturated; the content of nitrogen and sulfur in the product is low, the distillation range becomes lighter, and the hydrogenation purpose of stability. The operating period of the catalyst is 24 months.
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