Refinery gas hydrogenation combination process
A combined process and refinery gas technology, applied in the petroleum industry, refining to remove heteroatoms, refining hydrocarbon oil, etc., to achieve the effect of reducing operating energy consumption and equipment investment
Active Publication Date: 2019-05-21
CHINA PETROLEUM & CHEM CORP +1
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Problems solved by technology
[0006] To sum up, the refinery gas hydrotreating process in the prior art is a gas phase reaction, while the diesel hydrogenation is a liquid phase reaction. The two reaction types are completely different. Therefore, refinery gas hydrotreating and diesel liquid phase hydrogenation Combined methods are rarely reported
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[0032] The following examples are used to further illustrate the process and effects of the hydrogenation combination method of the present invention, but the following examples do not constitute a limitation to the method of the present invention.
[0033] The specific implementation of a combined hydrogenation method of the present invention is as follows: the feed oil 1 is mixed with the circulating oil 3, and the mixed material and hydrogen are mixed in the hydrogen dissolver 4 and then enter the hydrogenation reactor 7 and pass through the first catalyst bed. , The first catalyst bed effluent is dissolved in hydrogen and passes through the second catalyst bed, the second catalyst bed effluent is dissolved in hydrogen and gaseous raw material 6, and passes through the third catalyst bed, the third catalyst bed The reaction effluent 9 and the gaseous raw material 6 are mixed in the gas dissolver 22 and then enter the supplementary reactor 23 and pass through the first catalyst ...
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The invention discloses a refinery gas hydrogenation combination process. The refinery gas hydrogenation combination process comprises the following steps of (a) mixing a diesel raw oil and a circulating oil with a hydrogen gas in a hydrogen-dissolving device, then enabling the mixture to enter a hydrogenation catalyst bed layer in a hydrogenation reactor for reaction under hydrogenation operationconditions, disposing a gas-dissolving device between the adjacent catalyst bed layers; (b) mixing a refinery gas and / or the hydrogen gas, then enabling the mixed gas to enter any of the gas-dissolving devices disposed between the adjacent catalyst bed layers, mixing the mixed gas with a reaction material flow from the previous catalyst bed layer, then enabling the mixture to enter the next catalyst bed layer for reaction; (c) mixing the hydrogenation reaction flow obtained in the step (b) with the refinery gas and the hydrogen gas in the gas-dissolving devices, then enabling the mixture to enter the hydrogenation catalyst bed layers in the hydrogenation reactor for reaction under liquid phase hydrogenation operation conditions; and (d) separating hydrogenation reaction effluent obtainedin the step (c) into a gas phase and a liquid phase, removing hydrogen sulfide in the gas phase obtained by separation, then continuously separating the gas phase to obtain the hydrogen gas and the hydrotreated refinery gas. With the process, the refinery gas can be hydrotreated and the clean diesel can be produced simultaneously.
Description
Technical field [0001] The invention belongs to a hydrogenation process of oil refining technology, and relates to a refinery gas hydrogenation combined method, in particular to a refinery gas hydrotreating and a hydrogenation combined method for producing clean diesel. Background technique [0002] At present, the global energy is mainly derived from fossil energy, of which petroleum is the most important source of motor fuel. With the continuous development of the world economy and increasingly stringent environmental regulations, it is necessary to produce a large amount of light and clean motor fuel, which requires the improvement and improvement of the existing refining technology. As an important motor fuel, the quality requirements of diesel fuel are getting higher and higher, especially the sulfur content, density, and the content of fused ring aromatic hydrocarbons are strictly limited. [0003] Diesel hydrogenation technology is the most important means to improve the qu...
Claims
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Login to View More IPC IPC(8): C10G45/08C10G45/12C10G45/22
Inventor 刘涛徐彤牛世坤李扬李宝忠方向晨
Owner CHINA PETROLEUM & CHEM CORP