Hydrogenation method for hydrocarbon oils

A hydrocarbon oil and hydrogen technology, applied in the field of hydrocarbon oil hydrogenation, can solve the problems of reducing the mass transfer and reaction speed of fresh raw material oil and hydrogen, and the intensity of the reaction, so as to achieve reduced reactor volume, low operating costs, and less catalyst consumption Effect

Active Publication Date: 2009-01-07
CHINA PETROCHEMICAL CORP +1
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Problems solved by technology

[0008] The above improvements still require circulating hydrogen and circulating hydrogen compressors. US6428686 proposes a two-phase hydrogenation method, which dissolves hydrogen in raw oil before the reactor, cancels circulating hydrogen and circulating hydrogen compressors, and reduces the hydrogenation unit. investment and operating costs, the technology uses the liquid phase circulation of the reaction product to increase the dissolved amount of hydrogen to meet the hydrogen requirements in the hydrogenation process and bring out the heat

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  • Hydrogenation method for hydrocarbon oils
  • Hydrogenation method for hydrocarbon oils
  • Hydrogenation method for hydrocarbon oils

Examples

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Example Embodiment

[0062] Such as figure 1 As shown, the reactor shown in the figure is a four-stage catalyst bed. The fresh raw oil 1 is mixed with hydrogen 2 and part of the circulating oil in the first mixer 3 in the presence of a solvent or diluent 13, the mixture flow enters the separation tank 4, and the separation tank waste gas 14 is separated and becomes the reactor feed 7. The reactor feed 7 enters from the top of the reactor 5 into the catalyst bed of the first stage of the reactor to react with the catalyst, and another part or all of the circulating oil is mixed with the hydrogen 2 in the second mixer 6 to become the hydrogen-dissolved circulating oil 15, and the hydrogen-dissolved circulating oil The oil 15 enters the reactor 5 from the first stage and the second stage catalyst bed, the second stage and the third stage catalyst bed, and the third stage and the fourth stage catalyst bed respectively. 5 The reaction effluent from the bottom enters the first separator 8 for separation, a...

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Abstract

The present invention discloses a hydrocarbon oil hydrogenation method, which cancels circulating hydrogen and a circulating hydrogen compressor. Hydrogen is mixed with fresh crude oil and part of circulating oil under the existence of a solvent or a diluting agent so as to form a mixture flow; the mixture flows into a reactor to contact a catalyst; after the other part or the whole of the circulating oil is mixed with hydrogen, a circuit or a shunt circuit enters the reactor between reactor catalyst bed layers; the reacted effluent is used for gas-liquid separation and the liquid phase further separates the solvent or the diluting solvent for recycling use; a part of the separated liquid product is used as the product and the other part is used as the circulating oil. The hydrogen solubility in the solvent or the diluting solvent is larger than the hydrogen solubility in the mixture of fresh crude oil and the solvent or the diluting agent.

Description

technical field [0001] The invention relates to hydrocarbon oil hydrogenation technology, in particular to liquid-solid two-phase hydrocarbon oil hydrogenation technology. Background technique [0002] In hydrocarbon oil processing technology, hydrogenation technology is one of the commonly used technologies to improve the quality of hydrocarbon oil. As the global crude oil market tends to supply crude oil with higher sulfur content, refineries need to process low-quality hydrocarbon oil with higher sulfur content. Impurities such as sulfur, nitrogen, oxygen and metals are removed during the refining process, and the quality of hydrocarbon oil is changed by changing the molecular structure, so that various products meet the specification requirements. In the hydrocarbon oil hydrogenation process, the only hydrogen that participates in the reaction is hydrogen used for chemical hydrogen consumption, while the traditional trickle bed reactor hydrogenation technology requires a...

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Application Information

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IPC IPC(8): C10G45/02
Inventor 叶杏园朱华兴王月霞董利萍薛皓张光黎师敬伟胡敏李淑红
Owner CHINA PETROCHEMICAL CORP
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