Inferior distillate oil combination hydrogenation modified method

Abstract

The combined inferior distillate oil hydrogenating modification process includes hydrogenation modifying catalytically cracked diesel oil fraction material, hydrogenation refining pyrolytic distillate oil material, and separating the reaction effluent from both hydrogenation modifying and hydrogenation refining in a common separating system. The hydrogenating process of the present invention has high diesel oil yield, and is simple and low in cost, and the hydrogenated product has low content of S, P and other impurities and greatly raised cetane number. The process is suitable for hydrogenating of different types of inferior distillate oil material.

Description

technical field

[0001] The invention relates to a combined upgrading method of low-quality distillate oil, in particular to a combined method for improving secondary processing of distillate oil, especially low-quality distillate oil such as catalytic cracking diesel oil, coking diesel oil, and coking gasoline and diesel oil. Background technique

[0002] At present, international and domestic crude oil has shown a trend of heavy and inferior crude oil, and the range of oil fields involved is becoming more and more extensive. In addition, the continuous development of the world economy and the increasingly stringent environmental protection regulations require the production of a large amount of light clean fuels. All of these require the perfection and improvement of the existing oil refining technology to produce products that meet the requirements at the lowest cost. Due to the poor quality of raw materials, not only the quality of straight-run diesel oil will deteriorate...

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