Bright oil preparation method
A bright oil and tail oil technology, which is applied in the treatment of hydrocarbon oil, petroleum industry, hydrotreating process, etc. The effect of increasing the rate, reducing the dewaxing temperature difference, and high yield
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preparation example Construction
[0024] According to the present invention, the preparation method of described bright stock comprises the following steps:
[0025] (1) Under the condition of residual oil hydrotreating, hydrogen gas, residual oil raw material and catalyst are contacted and reacted, and a gas phase stream and a liquid phase stream are obtained from the hydrogenation reaction product, and the liquid phase stream includes light oil and hydrogenated Residue tail oil, the light oil includes naphtha and diesel oil, and the hydrogenated residue tail oil is further separated into vacuum wax oil and vacuum residue;
[0026] (2) Under solvent deasphalting conditions, the vacuum residue obtained in step (1) is contacted with a deasphalting solvent to carry out solvent extraction and separation to obtain light deasphalted oil, heavy deasphalted oil and deoiled asphalt respectively;
[0027] The first way:
[0028] Under solvent refining conditions, the light deasphalted oil obtained in step (2) is conta...
Embodiment 1
[0100] This example is used to illustrate the preparation method of the bright stock provided by the present invention.
[0101]The vacuum residue produced by the atmospheric and vacuum unit of Sinopec Jingmen Branch is used as the raw material. In the fixed bed hydrogenation test unit, the catalyst is the RCS-31 hydrogenation catalyst produced by Sinopec Catalyst Branch. The hydrogenation temperature is 350°C , hydrogen partial pressure 8.0MPa, volume space velocity 0.2h -1 , hydrogen oil volume ratio 1100Nm 3 / m 3 Under the conditions of the residue oil hydrogenation test, the 70°C refractive index of the vacuum residue of the >500°C component in the residue oil hydrogenation product is 1.5102, and the residue oil hydrogenation product is separated to obtain gas, naphtha, diesel oil and residue Hydrogenated tail oil. The residue hydrogenation tail oil was further cut by vacuum distillation to separate vacuum wax oil and vacuum residue. The cutting temperature of vacuum di...
Embodiment 2
[0111] This example is used to illustrate the preparation method of the bright stock provided by the present invention.
[0112] Using the vacuum residue produced by the atmospheric and vacuum unit of Sinopec Jingmen Branch as raw material, the catalyst is prepared according to the catalyst preparation method and composition described in the example of CN 105524657A on the fluidized bed hydrogenation test unit, and hydrogenated at 410°C Temperature, hydrogen partial pressure 18.0MPa, volumetric space velocity 1.2h -1 , Hydrogen oil volume ratio 900Nm 3 / m 3 Residue hydrogenation test was carried out under certain conditions. The 70°C refractive index of the vacuum residue of >500°C components in the residue hydrogenation product was 1.5328, and the residue hydrogenation product was separated to obtain gas, naphtha, diesel oil and residue Hydrogenated tail oil. The residue hydrogenation tail oil was further cut by vacuum distillation to separate vacuum wax oil and vacuum res...
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