A refinery gas hydrogenation combined processing technology

Abstract

The invention discloses a hydrogenation combined processing technology for refinery gas. The hydrogenation combined processing technology comprises the following steps: (a) mixing aviation kerosene crude oil and circulating oil with hydrogen gas in hydrogen dissolving equipment; then conveying a mixture into hydrogenation catalyst bed layers in a hydrogenation reactor under a hydrogenation operation condition; arranging the hydrogen dissolving equipment between the adjacent hydrogenation catalyst bed layers; (b) after mixing the refinery gas and / or hydrogen gas, conveying the mixture into thehydrogen dissolving equipment between any two adjacent catalyst bed layers; after mixing with reaction material flows on the previous catalyst bed layer, conveying the mixture into the next catalyst bed layer and reacting; (c) after mixing the hydrogenation reaction flow obtained in step (b) and the refinery gas and the hydrogen gas in the hydrogen dissolving equipment, conveying mixed gas into ahydrogenation catalyst bed layer in a supplementation and hydrogenation reactor for reacting under a liquid-phase hydrogenation operation condition; (d) separating a hydrogenation reaction flowing-outsubstance obtained in step (c) into a gas phase and a liquid phase; separating the obtained gas phase and removing hydrogen sulfide; then continually separating to obtain hydrogen gas and refinery gas subjected to hydrogenation treatment . The method provided by the invention can be used for carrying out hydrogenation treatment on the refinery gas and producing clean aviation kerosene.

Description

technical field [0001] The invention belongs to the hydrogenation process of oil refining technology, and relates to a refinery gas hydrogenation combination process, in particular to a refinery gas hydrogenation treatment and a hydrogenation combination method for producing high-quality aviation fuel. Background technique [0002] At present, the energy on a global scale mainly comes from fossil energy, among which petroleum is the most important source of motor fuel. With the continuous development of the world economy and the increasingly stringent environmental regulations, it is necessary to produce a large amount of light and clean motor fuel, all of which require the improvement and improvement of the existing refining technology. As an important motor fuel, the quality requirements of jet fuel are getting higher and higher, especially the strict restrictions on sulfur content, density, smoke point, mercaptan sulfur content, etc. [0003] Kerosene hydrogenation techn...

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Problems solved by technology

[0006] To sum up, in the prior art, the hydrogenation process of refinery gas is a gas phase reaction, while the hydrogenation of jet fuel is a liquid phase reaction. The two reaction types are completely different. Combined hydrogenation methods have rarely been reported

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