Refinery gas hydrogenating combined method
A combined method and refinery gas technology, which is applied in the fields of hydrotreating process, gas mixture processing, petroleum industry, 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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[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 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 hydrogenating catalyst bed layer in a diesel oil hydrogenating reactor to react under the liquid-phase hydrogenating operation condition; (b) mixing reaction product flow obtained in step (a) with the 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 hydrogenating reaction efflux in step (b) into a gas phase and a liquid phase, removing hydrogen sulfide from the 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 diesel oil products and utilizing a part of hydrogenating reaction efflux obtained in step (a) and / or a plurality 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 combination method of refinery gas, in particular to a hydrogenation combination method of hydrogenation treatment of 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 there are strict restrictions on sulfur content, density, and content of polycyclic aromatic hydrocarbons. [0003] Diesel hydrogenatio...
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IPC IPC(8): C10G67/02C10G70/02
Inventor 刘涛李宝忠刘继华李扬吴锐周勇
Owner CHINA PETROLEUM & CHEM CORP