Refinery gas hydrogenation combination process

A combined process and refinery technology, applied in hydrotreating process, petroleum industry, treatment of hydrocarbon oil, 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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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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

Method used

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  • Refinery gas hydrogenation combination process
  • Refinery gas hydrogenation combination process
  • Refinery gas hydrogenation combination process

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Embodiment Construction

[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 reaction effluent 9 is mixed with the gaseous material 6 in the gas dissolver 22 and enters the supplementary reactor 23, and passes through t...

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Abstract

The invention discloses a refinery gas hydrogenation combination process. The process comprises the following steps: (a) mixing feedstock oil of paraffin and circulating oil with hydrogen in a hydrogen-dissolving device, and then enabling the product to enter hydrogenation catalyst bed layers in a hydrogenation reactor for carrying out a reaction under hydrogenation operating conditions, wherein agas-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) mixinga 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 to enter 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 paraffin products at the same time.

Description

technical field [0001] The invention belongs to a hydrogenation process of oil refining technology, and relates to a combined hydrogenation process of gas in an oil refinery, in particular to a combined hydrogenation method for hydrogenation treatment of oil refinery gas and production of paraffin products. 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...

Claims

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Application Information

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IPC IPC(8): C10G67/00
Inventor 刘涛李宝忠张忠清全辉袁胜华徐彤
Owner CHINA PETROLEUM & CHEM CORP
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