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A method for combined hydrogenation of heavy oil

A technology for heavy oil and hydrogenation products, which is applied in the fields of hydrogenation treatment process, hydrocarbon oil treatment, petroleum industry, etc. It can solve the problems of high equipment investment cost, poor quality of light products, and short operation time of the device, so as to save hydrogen consumption , reduce entrainment, and avoid the effect of excessive hydrogenation

Active Publication Date: 2019-09-06
SINOPEC ENG +1
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  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of this disclosure is to provide a method for combined hydrogenation of heavy oil, which can solve the problems of unreasonable energy utilization, short device operation time, poor properties of light products and high equipment investment costs in the existing heavy oil hydrogenation method technical issues

Method used

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  • A method for combined hydrogenation of heavy oil
  • A method for combined hydrogenation of heavy oil

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Embodiment

[0070] Specific embodiments of the present disclosure will be provided below in conjunction with the accompanying drawings. Unless otherwise specified, the devices and devices used in the examples are conventional devices and devices well known to those skilled in the art.

[0071] Such as figure 1 As shown, after the raw material oil 1 is diluted with the circulating oil 19, it is mixed with supplementary hydrogen 2 and enters the raw material heating furnace 3 to heat up, and then enters the first ebullating bed reactor 5 respectively, and is contacted with the first hydrogenation catalyst to perform the first hydrogenation The interstage hydrogenation product 6 is obtained by the reaction, and the interstage hydrogenation product 6 is diluted by the part of the leaching tower bottom oil returned to the ebullated bed reactor, and then enters the interstage gas-liquid separator 7 for gas-liquid separation to obtain an interstage separation liquid 9 and the interstage separat...

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Abstract

The invention relates to a method for combined hydrogenation of heavy oil. The method adopts an online hydrogenation combined process of a boiling bed and a fixed bed, light oil obtained by hydrogenation of the boiling bed does not undergo the processes of pressure reduction and frictional distillation, light oil gas phase lower than 350 DEG C obtained by a warm high-pressure separator directly enters a fixed bed reactor for hydrogenation reaction, thus avoiding the defect of complex process caused by the procedure of firstly performing product pressure reduction and separation and then performing pressure-rising and temperature-rising hydrogenation of a conventional offline hydrogenation combined process, reducing the content of wax oil component in the light oil of the fixed bed reactor,and improving the selectivity of the hydrorefining reaction. In addition, the method also has the advantages of being high in light oil yield, small in catalyst consumption, reasonable in energy utilization, compact in process flow and low in device energy consumption.

Description

technical field [0001] The present disclosure relates to the field of petroleum processing, in particular, to a method for combined hydrogenation of heavy oil. Background technique [0002] With the aggravation of the heavy and inferior quality of petroleum processing raw materials and the increasingly stringent requirements of environmental protection regulations, how to carry out the deep processing of petroleum and the production of clean fuels has become an urgent problem to be solved in the oil refining industry. Among the processing methods of crude oil, the catalytic hydrogenation process plays an important role in the deep processing of crude oil due to its wide adaptability of raw materials, flexible operating conditions, and clean products. At present, heavy oil hydrogenation technologies mainly include fixed bed hydrogenation, ebullating bed hydrogenation, slurry bed hydrogenation and moving bed hydrogenation, among which fixed bed and ebullating bed are widely us...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G67/02
Inventor 杨玖坡乔爱军吴德飞范传宏张迅
Owner SINOPEC ENG
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