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Continuous liquid phase hydrotreatment method for hydrocarbon oil

A hydrogenation treatment and liquid phase technology, which is applied in the fields of hydrogenation treatment process, hydrocarbon oil treatment, petroleum industry, etc., can solve the problems of limited hydrogen dissolving capacity of hydrocarbon oil, difficulty in processing chemical hydrogen consumption, etc., and achieve equipment investment and operating costs Effect of low, high reaction rate, high catalyst stability

Active Publication Date: 2013-05-01
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this process has the problem of limited hydrogen solubility of hydrocarbon oil, and it is difficult to process raw oil with high chemical hydrogen consumption.

Method used

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  • Continuous liquid phase hydrotreatment method for hydrocarbon oil
  • Continuous liquid phase hydrotreatment method for hydrocarbon oil
  • Continuous liquid phase hydrotreatment method for hydrocarbon oil

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specific Embodiment approach

[0022] The invention fully mixes the raw material oil, the effluent of the reactor and the hydrogen, and the hydrogen-dissolved mixture enters the reactor. The whole reactor is equipped with multiple beds, and there is a mixer between the beds, which can mix the mixture with hydrogen. There is a sampling port at the bottom of each bed, which can measure the hydrogen content in the reactor stream at the outlet of the bed. concentration. The multiple mixers in the reactor are not necessarily used at the same time in the actual production process, but according to the nature of the processed raw oil and the requirements of the product, the flow in the reactor is selected from different mixers and the hydrogen introduced from the outside. Mix, the specific embodiment of the present invention is as follows:

[0023] In step (1), the feedstock oil, reactor effluent and hydrogen are mixed in a constant-pressure environment before entering the reactor, and the mixed material is intro...

Embodiment 1

[0040] A high-sulfur straight-run diesel fraction from the Middle East is used as feedstock 1, and feedstock 1 is mixed with reactor effluent and hydrogen at a pressure of 6.5MPa, and the mixed material is introduced into a reactor equipped with a loaded hydrofining catalyst , where the deep hydrodesulfurization reaction is carried out, the reaction conditions are: reaction temperature 355°C, reactor pressure 6.4MPa, raw material oil liquid hourly volume space velocity 1.5h -1 . The reactor is evenly divided into three beds, and at the outlet of the two beds, the hydrogen concentration in the flow in the reactor is measured to be 5×10 -4 g H 2 / g, the flow in the reactor and the hydrogen introduced from the outside enter the second mixer between the 2nd bed and the 3rd bed for mixing, and then enter the 3rd bed to continue the reaction, and the reaction is measured at the outlet of the 1st bed The concentration of hydrogen in the stream in the device is greater than 5×10 -4...

Embodiment 2

[0051] A secondary processing catalytic cracking diesel fraction is feed oil 2, feed oil 2 is mixed with reactor effluent and hydrogen at a pressure of 8.2MPa, and the mixed material is introduced into a reactor equipped with a loaded hydrorefining catalyst Carry out deep hydrodesulfurization reaction, the reaction conditions are: reaction temperature 370°C, reactor pressure 8.0MPa, raw material oil liquid hourly volume space velocity 1.5h -1 . The reactor is evenly divided into five beds, and the hydrogen concentration in the stream in the reactor is measured at the outlet of the first bed to be 3×10 -4 g H 2 / g, the stream in the reactor and the hydrogen are mixed in the first mixer, and enter the 2-bed layer for reaction after mixing; the hydrogen concentration in the stream in the reactor is measured at the outlet of the 3-bed layer to be 3×10 -4 g H 2 / g, the flow in the reactor and the hydrogen are mixed in the third mixer, and then enter the bed of the reactor 4 to r...

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Abstract

The invention provides a continuous liquid phase hydrotreatment method for hydrocarbon oil. According to the invention, a plurality of catalyst bed layers are arranged in a reactor, and mixers are arranged among the bed layers and can mix material flows in the reactor with hydrogen; multiple mixers in the reactor are not used at the same time, and instead, hydrogen is introduced into different mixers for mixing according to the properties of raw oil to be processed and product requirements. Compared with a conventional two-phase hydrogenation process, the process provided by the invention has stronger adaptability to raw oil, can guarantee a hydrogenation reaction in the whole reactor to have a high reaction rate and high catalyst stability and allows mixing frequency of hydrocarbon oil and hydrogen to be minimized, thereby reducing processing cost.

Description

technical field [0001] The invention belongs to a method for treating hydrocarbon oil in the presence of hydrogen, more specifically, a method for hydrogenation treatment of hydrocarbon oil without hydrogen circulation. Background technique [0002] With the increasingly stringent environmental protection requirements worldwide, people's requirements for the quality of petroleum products are also becoming more and more stringent. EU countries have implemented Euro V emission standards since 2009, and developed countries such as the United States and Japan have also promulgated their own gasoline and diesel product indicators. China has also implemented the National III standard equivalent to the Euro III emission standard since 2010, and Beijing and Shanghai have begun to implement the local gasoline and diesel product indicators equivalent to the Euro IV emission standard. [0003] At present, most of the hydrogenation treatment technologies used in the production of gasol...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G65/02
Inventor 丁石高晓冬王哲陈若雷郭润海王子文刘学芬
Owner CHINA PETROLEUM & CHEM CORP
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