A refinery gas hydrogenation combined processing technology
A combination process and refinery technology, which is applied in hydroprocessing process, petroleum industry, hydrocarbon oil treatment, etc., to achieve the effect of reducing operating energy consumption and equipment investment
Active Publication Date: 2021-02-05
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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[0033] 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.
[0034] A hydrogenation combination method of the present invention is specifically implemented as follows: raw material oil 1 is mixed with circulating oil 3, and the mixed material and hydrogen gas are mixed in the hydrogen dissolver 4 and then enter the hydrogenation reactor 7, and pass through the first catalyst bed , hydrogen is dissolved in the effluent of the first catalyst bed, and passes through the second catalyst bed, hydrogen and gaseous material 6 are dissolved in the effluent of the second catalyst bed, and passes through the third catalyst bed, the third catalyst bed The hydrorefining reactant flow 9 is mixed with the gaseous material 6 in the gas dissolver 22 and enters the supplementary reactor 23, and passes...
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Abstract
The invention discloses a refinery gas hydrogenation combination processing technology. The process comprises the following steps: (a) mixing feedstock oil of diesel oil and circulating oil with hydrogen in a hydrogen-dissolving device, and then enabling the product to enter hydrogenation modifying catalyst bed layers in presence of a hydrorefining catalyst for carrying out a reaction under hydrogenation operating conditions, wherein a gas-dissolving device is arranged between the every two adjacent catalyst bed layers; (b) after mixing of refinery gas and / or the hydrogen, entering the gas-dissolving device arranged between any adjacent catalyst bed layers, mixing the product with a reactant stream coming from the previous catalyst bed layer, and then entering the next catalyst bed layer for carrying out a reaction; (c) mixing a hydrogenation reactant stream, obtained in the step (b), with the refinery gas and the hydrogen in the gas-dissolving devices, and then enabling the product toenter hydrogenation catalyst bed layers in a supplementary hydrogenation reactor for carrying out a reaction under liquid phase hydrogenation operating conditions; (d) separating hydrogenation reaction effluent, obtained in the step (c), into a gas phase and a liquid phase, removing hydrogen sulfide from the separated gas phase and then continuously separating to obtain hydrogen and the hydrotreated refinery gas. The method can realize the hydrotreatment of the refinery gas and the production of clean diesel oil at the same time.
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 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 hydrogenation ...
Claims
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IPC IPC(8): C10G67/02
Inventor 刘涛赵玉琢李宝忠关明华徐彤李扬
Owner CHINA PETROLEUM & CHEM CORP