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Method for producing hydrotreated oil and method for producing catalytic cracked oil

a technology which is applied in the petroleum industry, hydrocarbon oil treatment, and refining to eliminate heteroatoms, etc. it can solve the problems of not being able to reduce the content of nitrogen in the production oil in actual operation, no particular technology for improving denitrification activity, and unable to achieve the effect of hydrotreatment oil and catalytic crack oil efficient production

Inactive Publication Date: 2018-01-18
JXTG NIPPON OIL & ENERGY CORPORATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention provides two methods for efficiently producing hydrotreated oil and catalytic cracked oil. These methods allow for the effective desulfurization and denitrification of heavy hydrocarbon oil, resulting in a high-quality stock oil for FCC. Additionally, the methods allow for the production of high-quality catalytic cracked oil.

Problems solved by technology

However, it has been considered until now that the denitrification reaction will also proceed when the desulfurization reaction proceeds in the direct desulfurization unit of heavy hydrocarbon oil, and there has been no particular technology of improving denitrification activity.
However, in an actual direct desulfurization unit, in order to obtain a desired desulfurized production oil, an operation of maintaining the sulfur content in the production oil at a constant level has been performed, and unless a catalyst in which only the denitrification activity is improved is used, the content of nitrogen in the production oil has not been reduced.
Therefore, even though a hydrotreating catalyst having improved desulfurization activity and denitrification activity was used in the above method, the content of nitrogen in the production oil could not be reduced in actual operation.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0116]In Example 1, a catalyst (demetallization catalyst X) (average pore diameter: 18 nm, pore volume: 0.87 mL / g) in which 2.7% by mass of molybdenum (in terms of molybdenum elements) was supported by an alumina carrier was used as a demetallization catalyst. Further, a catalyst A having the composition shown in Table 1 was used as a hydrotreating catalyst. Note that, in Table 1, C2 / C3 represents the ratio of the content C2 of an iron group element to the content C3 of a group 6 element; C1 / C3 represents the ratio of the content C1 of phosphorus to the content C3 of a group 6 element; and C2 / C1 represents the ratio of the content C2 of an iron group element to the content C1 of phosphorus.

[0117]The reactor inlet side of a hydrotreating unit was filled with the demetallization catalyst X, and the subsequent stage side of the hydrotreating unit was filled with the equal volume of the catalyst A. Hydrotreatment was performed under the following conditions using this hydrotreating unit...

examples 2 to 4

[0124]Hydrotreatment and analysis of the resulting hydrotreated oil were performed in the same manner as in Example 1 except that, as a hydrotreating catalyst, catalysts B to D shown in Table 1 were used instead of the catalyst A. The analysis results were as shown in Table 2.

example 5

[0127]A hydrotreating system using a plurality of catalysts was performed to obtain production oil. Further, in order to confirm the reactivity of catalytic cracking reaction of the resulting production oil, a MAT (Micro Activity Test) test was performed on the production oil. Details will be described below.

[0128]First, the above demetallization catalyst X, a demetallization catalyst Y (average pore diameter: 18 nm, pore volume: 0.80 mL / g) in which 6% by mass of molybdenum (in terms of molybdenum elements) and 1.5% by mass of nickel (in term of nickel elements) are supported by an alumina carrier, the above desulfurization catalyst E, the above desulfurization catalyst H, and the above desulfurization catalyst A were prepared. Further, a mixture in which the above solvent deasphalted oil was mixed with an atmospheric residual oil B to be shown below were mixed in a ratio of 54:46 (volume ratio) was prepared as a stock oil for hydrotreatment.

[0129](Atmospheric Residual Oil B)

[0130]C...

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PUM

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Abstract

There is provided a method for producing hydrotreated oil comprising: a step of passing heavy hydrocarbon oil through a reactor filled with a hydrotreating catalyst to obtain hydrotreated oil, wherein the hydrotreating catalyst contains phosphorus, an iron group element, and a group 6 element; the ratio C2 / C1 of a content C2 of the iron group element to a content C1 of phosphorus in the hydrotreating catalyst is less than 0.60 in a molar ratio; and the average pore diameter of the hydrotreating catalyst is larger than 7.5 nm and smaller than 9.5 nm.

Description

TECHNICAL FIELD[0001]The present invention relates to a production method for obtaining hydrotreated oil from heavy hydrocarbon oil, and to a production method for obtaining catalytic cracked oil from heavy hydrocarbon oil.BACKGROUND ART[0002]Until now, in oil refineries in Japan, fluid catalytic cracking (FCC) unit has been playing a central role in gasoline production for addressing demand for gasoline and promoting conversion of heavy hydrocarbon oil into light oil. Further, in recent years, interest has been high in the FCC unit as a process for producing a light hydrocarbon oil having high added value from heavy hydrocarbon oil, and a stock oil in which oil residue such as an atmospheric residual fraction is mixed in addition to a conventional vacuum gas oil fraction has also been used as a stock oil for FCC, seeking for higher economical efficiency.[0003]Since heavy metals such as vanadium and nickel are contained in addition to sulfur and nitrogen in the atmospheric residual ...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): C10G45/08C10G69/04
CPCC10G45/08C10G69/04C10G2300/202
Inventor MATSUSHITA, KOICHI
Owner JXTG NIPPON OIL & ENERGY CORPORATION
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