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A combined hydrogenation process

A combined process and hydrogenation unit technology, which is applied to the combined process of hydrogen refining hydrocarbon oil and hydrogen combined process of hydrogenation units, can solve the problem of wasting hydrogen resources, etc., and achieve low operating costs, low investment, and large operation flexibility. Effect

Active Publication Date: 2011-12-07
CHINA PETROCHEMICAL CORP +1
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  • Abstract
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  • Claims
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Problems solved by technology

The hydrogen content in low fraction gas is generally about 70%, which wastes a lot of hydrogen resources when used as fuel

Method used

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  • A combined hydrogenation process

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Embodiment Construction

[0033] Such as figure 1 As shown, the combined hydrogenation process consists of a medium-high pressure hydrogenation unit reactor 5, a medium-high pressure hydrogenation unit high-pressure separator 7, a medium-high pressure hydrogenation unit low-pressure separator 10, a low-pressure hydrogenation unit reactor 15, a low-pressure hydrogenation unit gas The liquid separator 17 and the PSA device 20 are composed.

[0034] In the specific implementation process of the present invention, the circulating hydrogen 8 of the medium and high pressure hydrogenation device and the new hydrogen 2 of the medium and high pressure hydrogenation device are mixed to form the mixed hydrogen 3 of the high pressure hydrogenation device, and the fresh raw material oil 1 of the medium and high pressure hydrogenation device is mixed with the high pressure hydrogenation device The mixed hydrogen gas 3 is mixed into the mixed feed 4 of the medium and high pressure hydrogenation device, and the mixed ...

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Abstract

The invention discloses a hydrogenation combined process. In the process, a reaction effluent from a middle-high pressure hydrogenation device with a pressure of more than 4.0MPa is subjected to gas-liquid separation in a high pressure separator, wherein the gas obtained by separation is used as circular hydrogen, and the liquid obtained by separation enters into a low pressure separator for further gas-liquid separation; and the liquid obtained by further separation is used as a product, and the gas obtained by further separation is used as hydrogen for a low pressure hydrogenation with an operation pressure of 2.0-3.0MPa. The reaction effluent is subjected to gas-liquid separation, the gas obtained by separation is discharged out of the device, and the liquid obtained by separation is the product.

Description

technical field [0001] The invention relates to the field of refining hydrocarbon oil in the presence of hydrogen, in particular to a combined process for refining hydrocarbon oil with hydrogen, and to a combined hydrogen process technology for a hydrogenation unit. Background technique [0002] At present, the continuous development of the world economy and the increasingly stringent environmental protection regulations require the production of a large amount of light and clean fuels, which require the improvement and improvement of the existing refining technology to produce products that meet the requirements at the lowest cost. With the increasing shortage of crude oil resources and the development of heavy and inferior quality, the hydrogenation process of distillate oil has been widely used in the production of clean fuels. [0003] The reaction system of traditional hydrocarbon oil hydrogenation process requires a large amount of hydrogen to ensure a certain hydrogen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G67/00
Inventor 赵建炜朱华兴张帆张光黎
Owner CHINA PETROCHEMICAL CORP
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