Liquid phase circular hydrogenation treatment method capable of improving mixed amount of hydrogen

A liquid-phase circulating hydrogenation and treatment method technology, which is applied in the fields of hydrotreating process, treatment of hydrocarbon oil, petroleum industry, etc., can solve the problems such as the failure to disclose the specific method of dissolving hydrogen, affecting the effect of hydrogenation and removing impurities, and decreasing the solubility of hydrogen. , to achieve a good hydrogenation environment, save equipment investment, and simplify the operation process.

Active Publication Date: 2012-01-11
CHINA PETROLEUM & CHEM CORP +1
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Problems solved by technology

But this technology does not disclose the specific way of dissolving hydrogen, and after dissolving hydrogen, there is also a waste gas separation device in the separator set before the reactor
Although this can remove a small amount of waste gas that affects the hydrogenation reaction (mainly hydrogen

Method used

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  • Liquid phase circular hydrogenation treatment method capable of improving mixed amount of hydrogen
  • Liquid phase circular hydrogenation treatment method capable of improving mixed amount of hydrogen
  • Liquid phase circular hydrogenation treatment method capable of improving mixed amount of hydrogen

Examples

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Embodiment 1-2

[0027] This example is an implementation of hydrocarbon oil hydrotreating, and the schematic diagram of the operation process refers to the figure 1 .

[0028] The fresh raw oil 1, the circulating oil 10 from the hydrogenation reactor and the circulating oil in the high-gravity hydrogen mixing equipment are sucked into the gas-liquid mixing impeller 5 at the lower part of the hollow shaft 6, mixed with the fresh hydrogen 2 and thrown off by the high-speed rotating impeller Under the condition of supergravity, the liquid phase material dissolves hydrogen and releases H 2 S, NH 3 and other gas impurities. After passing through the high-gravity hydrogen mixing equipment, the H 2 S, NH 3Hydrogen 3 such as gaseous impurities is discharged from the upper part of the shell of the high-gravity hydrogen mixing equipment, and is recycled after being purified. The liquid phase material 7 fully dissolved in hydrogen enters the fixed bed reactor 8 for catalytic hydrogenation reaction,...

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Abstract

The invention discloses a liquid phase circular hydrogenation treatment method capable of improving mixed amount of hydrogen. The process flow adopted by the method comprises that: a liquid-phase material ( including fresh raw material oil, after-reaction circulating oil and circulating oil in a supergravity hydrogen mixing equipment) and hydrogen are filled into the supergravity hydrogen mixing equipment at the same time; and the hydrogen is torn and cut into lots of micro air bubbles through the high-speed rotation of a gas-liquid mixing impeller, a gas-liquid mass transfer efficiency is increased greatly, hydrogen is dissolved in the liquid-phase material in a saturated state, and the lots of micro air bubbles are dispersed in the liquid-phase material in an emulsified state so as to be brought into a reactor to undergo a hydrogenation reaction. In the method disclosed by the invention, the adoption of the supergravity hydrogen mixing equipment greatly promotes the dissolution of hydrogen and more effectively removes gas-phase impurities such as hydrogen sulfide and ammonia, so as to promote reactions such as hydrodesulfurization, denitrification, aromatic saturation and cracking.

Description

technical field [0001] The invention relates to a liquid-phase circulating hydrogenation treatment method, in particular to a liquid-phase circulating hydrogenation method for increasing the amount of hydrogen dissolved in liquid-phase materials. Background technique [0002] Conventional fixed-bed hydrogenation process is an economical and effective means to remove sulfur, nitrogen and other impurities in raw oil. In the operation of fixed-bed hydrogenation units, higher hydrogen-to-oil ratio and hydrogen partial pressure are often used to ensure the service life of the catalyst and promote the reactions of hydrodesulfurization, denitrogenation, aromatics saturation and cracking. However, the high-pressure hydrogen circulation system requires high investment and operating costs, which indirectly increases the production cost of oil products. If the hydrogen flow rate in the hydroprocessing process can be reduced and the hydrogen circulation system and hydrogen circulation ...

Claims

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Application Information

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IPC IPC(8): C10G65/08C10G45/22
Inventor 王喜彬曾榕辉孙万付刘建宇
Owner CHINA PETROLEUM & CHEM CORP
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