A method for ultra-deep hydrodesulfurization of diesel oil

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 meeting the product chromaticity index at the same time, so as to save investment and operating costs, reduce usage, and avoid The effect of using

Active Publication Date: 2018-03-20
CHINA PETROLEUM & CHEM CORP +1
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  • Abstract
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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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  • A method for ultra-deep hydrodesulfurization of diesel oil
  • A method for ultra-deep hydrodesulfurization of diesel oil

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Embodiment 1

[0038] Raw material oil A and hydrogen enter 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, the deep hydrodesulfurization reaction is carried out, the reaction conditions are: reaction temperature 380 ℃, raw material oil liquid hourly volume space velocity 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 middle and 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°C, the pressure is 6.0MPa, and the liquid hourly vo...

Embodiment 2

[0041] Raw material oil B and hydrogen enter 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, carry out deep hydrodesulfurization reaction, etc., the reaction conditions are: reaction temperature 390 ℃, raw material oil liquid hourly volume space velocity 2.0h -1 , the reaction system pressure is 8.0MPa.

[0042] The middle part of the hot high-pressure separator is filled with hydrogenation catalyst C, and the reactor effluent 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, and the hot high-pressure The temperature of the separator is 270°C, 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...

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Abstract

A method for ultra-deep hydrodesulfurization of diesel oil. Diesel feedstock oil and hydrogen enter the reactor together, and hydrogenation reaction is carried out under the action of hydrogenation catalyst I. The middle part of the separator is filled with hydrogenation catalyst II, and the liquid phase stream separated by the hot high-pressure separator is cooled and fractionated to obtain hydrogenated gasoline and hydrogenated diesel oil. The invention can process straight-run diesel oil or low-quality secondary processed diesel oil to produce ultra-low-sulfur diesel oil with a sulfur content of less than 10ppm, and can complete the hydrodecolorization reaction without an independent hydrodecolorization reactor, making the product ASTMD1500 chromaticity less than 1.0.

Description

technical field [0001] The invention belongs to a method for refining hydrocarbon oil under the condition of hydrogen, more specifically, a method for ultra-deep hydrodesulfurization and decolorization of diesel oil. Background technique [0002] With the acceleration of dieselization of vehicles 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) and other harmful substances. These substances not only form acid rain in cities and surrounding areas, destroy the earth's ozone layer, but may also cause human cancer. To reduce SO in automobile exhaust X , NO X To reduce the emission of pollutants such as PM and PM, it is necessary not only to reduce the sulfur content in diesel, but also to reduce the aromatics content in diesel. [0003] For this reason, diesel oil standards are becoming increasingly stringent arou...

Claims

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Application Information

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Patent Type & Authority Patents(China)
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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