Production system and production method of high-quality distillate oil

Abstract

The invention discloses a production system and a production method of high-quality distillate oil, the system comprises a fixed bed hydrogenation reaction unit and an adsorption separation unit, the fixed bed hydrogenation reaction unit comprises at least one fixed bed hydrogenation reactor; a hydrogenation reaction zone I, a flash evaporation zone, a hydrogenation reaction zone II and a hydrogenation reaction zone III are sequentially arranged in the fixed bed hydrogenation reactor from top to bottom, the flash evaporation zone is provided with a liquid phase material inlet, a hydrogen inlet and an extraction side line are arranged between the hydrogenation reaction zone II and the hydrogenation reaction zone III, and the extraction side line is connected with a feed port of the adsorption separation unit. According to the method, high-quality distillate oil is produced through the processes of hydrogenation, side draw-out and adsorption separation in the system. The production system and the production method disclosed by the invention can be used for simultaneously producing high-quality aviation kerosene with low freezing point and high smoke point and a diesel blending component with ultralow sulfur and high cetane number by taking inferior coal oil and diesel fraction as raw materials under the conditions of simple process, low energy consumption and low cost.

Description

technical field [0001] The invention belongs to the field of clean oil refining, and in particular relates to a production method of high-quality jet fuel and diesel oil. Background technique [0002] In recent years, my country's civil aviation industry has continued to develop, and the demand for aviation fuel has continued to grow. In 2015, my country's civil aviation completed a total transportation turnover of 85.2 billion ton-kilometers, and the apparent consumption of kerosene reached 27.7 million tons, of which more than 99% was consumption of aviation fuel. In the face of the continuously increasing demand for jet fuel production, oil refineries can adopt the method of cutting straight-run jet fuel fractions to achieve the purpose of increasing jet fuel production. The two indicators of freezing point and smoke point of aviation fuel products are unqualified, and it is difficult to significantly improve the above two indicators based on the pressure design level and...

AI Technical Summary

Problems solved by technology

However, this process is relatively complicated, and at least four fractionation and reaction devices need to be installed, and there must be stripping and separation between the reactors, which has the problems of complicated operation and high energy consumption.

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