Coking light distillate hydrogenation modification method

Abstract

The invention relates to a method used for hydrogenation modification of coking light distillate oil; under hydrogenation refining condition, the raw material of the coking light distillate oil and hydrogen are contacted with W-Mo-Ni series of hydrogenation catalysts firstly; subsequently, naphtha distillate, coal oil distillate and diesel distillate are gained by stripping and distillation; wherein, the coal oil distillate and new hydrogen enter a low-pressure hydrogenation reactor and are contacted with Ni-series of hydrogenation catalysts; the product is separated by a gas-liquid separator; and the liquid product is used as high-quality jet fuel components and the hydrogen-rich gas is returned to the coking light distillate oil raw material and used for hydrogenation refining. The method can process the coking light distillate oil with bad quality into high-quality jet fuel, high-quality naphtha and clean diesel components by simple process, has the advantages of wide application of the raw material, flexible operation, stable running, and the like, and effectively improves the economical benefits of the enterprises.

Description

technical field

[0001] The invention relates to a method for hydrogenation and upgrading of coking light distillate oil raw materials, specifically to directly produce high-quality 3 # Jet fuel, the method of simultaneously producing high-quality hydrogenated naphtha and low-sulfur high-cetane diesel components is suitable for refineries with delayed coking units. Background technique

[0002] At present, there are two main ways to directly produce qualified jet fuel: one is to obtain kerosene fractions from crude oil through atmospheric distillation, and then undergo hydrogenation or non-hydrogenation treatment to obtain qualified jet fuel products; the other is to obtain qualified jet fuel products through decompression Distillate oil is used as raw material, and qualified jet fuel products can also be directly produced by high-pressure hydrocracking technology. The first method has relatively low equipment investment and operating costs, but is limited by the amount of r...

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