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Diesel oil deep hydrodesulfurization method

A deep hydrogenation and diesel oil technology, which is applied in the fields of hydrogenation treatment process, petroleum industry, and hydrocarbon oil treatment, can solve the problems of not being able to meet the product chromaticity index at the same time, so as to save investment and operating costs, reduce usage, improve The effect of product color

Active Publication Date: 2016-01-27
CHINA PETROLEUM & CHEM CORP +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The technical problem to be solved by the present invention is that when producing diesel products with a sulfur content less than 10 μg / g in the prior art, the chromaticity index of the product cannot be satisfied at the same time

Method used

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  • Diesel oil deep hydrodesulfurization method
  • Diesel oil deep hydrodesulfurization method

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Experimental program
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Effect test

Embodiment 1

[0038] The raw material oil A and hydrogen enter into the reactor equipped with hydrogenation catalyst C together, and the volume ratio of hydrogen to oil is 300Nm 3 / m 3 , under the action of hydrogenation catalyst C, a deep hydrodesulfurization reaction is carried out. The reaction conditions are: the reaction temperature is 380 °C, and the volumetric space velocity of the raw oil is 3.0h. -1 , the pressure of the reaction system is 6.0 MPa, and the sulfur content of the liquid-phase stream in the obtained reactor effluent is less than 10 μg / g.

[0039] The middle part of the hot high pressure separator is filled with hydrogenation catalyst D, and the effluent from the reactor enters the hot high pressure separator from the upper part of the hot high pressure separator through heat exchange, and passes through the catalyst bed packed in the hot high pressure separator from top to bottom. The temperature of the separator is 300℃, the pressure is 6.0MPa, and the liquid hourly...

Embodiment 2

[0041] The raw material oil B and hydrogen enter into the reactor equipped with hydrogenation catalyst C together, and the volume ratio of hydrogen to oil is 500Nm 3 / m 3 , under the action of hydrogenation catalyst C, the deep hydrodesulfurization reaction is carried out. -1 , the reaction system pressure is 8.0MPa.

[0042] The middle of the hot high pressure separator is filled with hydrogenation catalyst C, and the effluent from the reactor enters the hot high pressure separator from the bottom of the hot high pressure separator through heat exchange, and passes through the catalyst bed packed in the hot high pressure separator from bottom to top. The temperature of the separator is 270℃, the pressure is 8.0MPa, and the liquid hourly volume space velocity is 18.0h -1 . The liquid phase stream separated by the hot high pressure separator is cooled and separated to obtain hydrogenated gasoline and hydrogenated diesel oil. The reaction conditions and hydrogenated diesel p...

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Abstract

The invention relates to a diesel oil deep hydrodesulfurization method, which comprises that diesel oil raw material oil and hydrogen enter a reactor and are subjected to a hydrogenation reaction under the effect of a hydrogenation catalyst I, the reactor effluent is subjected to heat exchange, the obtained material enters a hot high pressure separator, a hydrogenation catalyst II is filled on the middle portion of the hot high pressure separator, and the liquid-phase stream separated by the hot high pressure separator is subjected to cooling and fractionation to obtain the hydrogenation gasoline and the hydrogenation diesel oil. According to the present invention, the straight-run diesel oil or poor-quality secondary processing diesel oil can be treated, the ultra-low sulfur diesel oil with the sulfur content of less than 10 ppm can be produced, the hydrogenation decolorization reaction can be separately completed without the separate hydrogenation decolorization reactor, and the product ASTMD1500 chrominance is less than 1.0.

Description

technical field [0001] The invention belongs to a method for refining hydrocarbon oil in the presence of hydrogen, more specifically, a method for ultra-deep hydrodesulfurization and decolorization of diesel oil. Background technique [0002] With the acceleration of the trend of vehicle dieselization worldwide, the demand for diesel will further increase in the future. However, the exhaust gas emitted after diesel combustion contains sulfur oxides (SO X ), nitrogen oxides (NO X ) and particulate matter (PM). These substances not only form acid rain in cities and surrounding areas, destroy the Earth's ozone layer, but also cause cancer in humans. To reduce SO in car exhaust X , NO X To reduce the emission of pollutants such as PM and PM, it is necessary to reduce not only the sulfur content in diesel fuel, but also the aromatic hydrocarbon content in diesel fuel. [0003] For this reason, diesel standards are becoming more and more stringent worldwide, and the producti...

Claims

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Application Information

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IPC IPC(8): C10G67/02
Inventor 丁石牛传峰高晓冬张锐王哲
Owner CHINA PETROLEUM & CHEM CORP
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