Refinery gas hydrogenating combined processing method
A combined method and refinery gas technology, which is applied in the processing of gas mixtures, hydroprocessing technology, petroleum industry, etc., to achieve the effect of solving temperature rise, reducing operating energy consumption, and reducing equipment investment
Active Publication Date: 2019-05-21
CHINA PETROLEUM & CHEM CORP +1
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[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 Modified combined methods are rarely reported
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[0031] The process and effect of the combined hydrogenation method of the present invention will be further described below in conjunction with the examples, but the following examples do not constitute a limitation to the method of the present invention.
[0032] A hydrogenation combination method of the present invention is specifically implemented as follows: feedstock oil 1 is mixed with circulating oil 3, and the mixed material and hydrogen gas are mixed in a hydrogen dissolver 4 and then enter a diesel hydrogenation reactor 7, and a diesel hydrogenation reaction stream 9 After being mixed with the refinery gas raw material in the gas dissolver 22, it enters the supplementary hydrogenation reactor 23, and the supplementary hydrogenation reaction effluent 9 enters the high-pressure separator 10, and the gas 16 and liquid are separated in the high-pressure separator 10, and the liquid enters the low-pressure Separator 11, the gas 17 and liquid are separated in the low-pressu...
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The invention discloses a refinery gas hydrogenating combined processing method which comprises the following steps: (a) mixing diesel oil raw oil and circulation oil with hydrogen in hydrogen dissolving equipment and then sending into a hydro-fining catalyst and hydro-upgrading catalyst bed layer in a hydrogenating reactor to react under the liquid-phase hydrogenating operation condition; (b) mixing reaction product flow obtained in step (a) with refinery gas and hydrogen in gas dissolving equipment and then sending into a hydrogenating catalyst bed layer in a supplementary hydrogenating reactor to react under the liquid-phase hydrogenating operation condition; (c) separating the hydrogenating reaction efflux of step (b) into a gas phase and a liquid phase, removing hydrogen sulfide fromthe separated gas phase, then continuing to separate to obtain hydrogen and the hydrogenated refinery gas, fractionally distilling the separated liquid phase to obtain naphtha and clean diesel oil andutilizing a part of hydrogenating reaction efflux obtained in step (a) and / or a part of hydrogenating reaction product flow obtained in step (b) and / or a part of liquid phase separated by a high-pressure separator as circulation oil to return the hydrogen dissolving equipment. The method can simultaneously hydrogenate refinery gas and produce clean diesel oil.
Description
technical field [0001] The invention belongs to the hydrogenation process of oil refining technology, and relates to a hydrogenation combined processing method of refinery gas, in particular to a hydrogenation combined method of hydrogenation treatment of oil refinery gas and production of clean diesel oil. 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 diesel oil are getting higher and higher, especially the sulfur content, density, and content of polycyclic aromatic hydrocarbons are strictly limited. The technology of hydrogenat...
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Login to View More IPC IPC(8): C10G67/02C10G70/02
Inventor 刘涛李宝忠赵玉琢乔凯孙士可牛世坤
Owner CHINA PETROLEUM & CHEM CORP