Refinery gas hydrogenating combined method
A combined method and refinery technology, applied in the processing of gas mixtures, hydroprocessing technology, petroleum industry, etc., to achieve the effects of reducing operating energy consumption, reducing equipment investment, and reducing hydrogen consumption
Active Publication Date: 2019-05-21
CHINA PETROLEUM & CHEM CORP +1
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Problems solved by technology
[0006] In summary, the refinery gas hydrotreating process in the prior art is a gas phase reaction, while the paraffin hydrogenation is a liquid phase reaction, and the two reaction types are completely different. Therefore, refinery gas hydrotreating and paraffin 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, the mixed material and hydrogen gas are mixed in hydrogen dissolver 4 and then enter paraffin hydrogenation reactor 7, and paraffin 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-pressure sep...
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The invention discloses a refinery gas hydrogenating combined method which comprises the following steps: (a) mixing wax oil raw oil and circulation oil with hydrogen in hydrogen dissolving equipmentand then sending into a hydrogenating catalyst bed layer in a wax oil hydrogenating reactor to react under the liquid-phase hydrogenating operation condition; (b) mixing reaction product flow obtainedin 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 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 paraffin products and utilizing 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 oilto return the hydrogen dissolving equipment. The method can simultaneously hydrogenate refinery gas and produce high-quality paraffin.
Description
technical field [0001] The invention belongs to the hydrogenation process of oil refining technology, and relates to a combined method of hydrogenation of refinery gas, in particular to a hydrogenation combined method of hydrogenation treatment of oil refinery gas and production of clean paraffin. Background technique [0002] Paraffin wax is a solid petroleum product obtained by solvent dewaxing and deoiling of vacuum distillate oil. It is an important raw material for medicine, daily chemical industry and other fine chemical industries. Paraffin wax can be roughly divided into paraffin wax, high melting point petroleum wax, microcrystalline wax, vaseline and so on. Paraffin wax for these purposes needs to be deeply refined to remove sulfur, nitrogen compounds and condensed aromatic hydrocarbons contained therein, in order to be harmless to the human body. Paraffin refining includes clay refining and hydrofining, among which hydrofining technology is a process in which non...
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IPC IPC(8): C10G67/02C10G70/02C10G73/44
Inventor 刘涛刘振华李宝忠姚春雷张忠清乔凯
Owner CHINA PETROLEUM & CHEM CORP