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A mid-pressure hydrocracking method for producing jet fuel

A hydrocracking and jet fuel technology, applied in hydrotreating process, petroleum industry, processing hydrocarbon oil, etc., can solve the problem of unqualified smoke point of kerosene products, and achieve low operating cost, low equipment investment and low BMCI value Effect

Active Publication Date: 2012-04-04
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

What needs to be solved is the problem of unqualified smoke point of kerosene products under the existing medium-pressure hydrocracking conditions, as well as the problem of producing qualified jet fuel and the largest amount of steam cracking raw materials for ethylene production

Method used

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  • A mid-pressure hydrocracking method for producing jet fuel
  • A mid-pressure hydrocracking method for producing jet fuel
  • A mid-pressure hydrocracking method for producing jet fuel

Examples

Experimental program
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Effect test

Embodiment 1

[0033] Using raw material A, the reaction pressure is 10.5MPa, the refining section is 373°C, and the refining / cracking volume space velocity is 1.2h respectively -1 、2.0h -1 , under the reaction conditions that the volume ratio of hydrogen to oil is 1200, using the method provided by the invention, a hydrocracking test of 30% kerosene fraction circulation is carried out, and the single-pass conversion rate of the >350 ° C fraction is controlled to be about 65%. The test results are shown in Table 2 and shown in Table 3. Table 2 lists the distribution data based on liquid products, and Table 3 lists the distribution data based on raw oil. As can be seen from Table 2, by the method provided by the invention, the yield of kerosene fraction is 13% by weight, and the smoke point is 25.0mm, which can satisfy the index of No. 3 jet fuel (No. 3 jet fuel smoke point is not less than 25.0mm), The yield of light naphtha is 4.92% by weight, the yield of tail oil is 37.20% by weight, an...

Embodiment 2

[0039] Using raw material A, the reaction pressure is 10.5MPa, the refining section is 373°C, and the refining / cracking volume space velocity is 1.2h -1 / 2.0h -1 , under the reaction conditions that the volume ratio of hydrogen to oil is 1200. Using the method provided by the present invention, a hydrocracking test of 50% kerosene fraction circulation was carried out, and the single-pass conversion rate of the >350°C fraction was controlled to be about 65%. The test results are shown in Table 6. As can be seen from Table 6, through the method provided by the present invention, the yield of kerosene fraction is 9.47% by weight, and the smoke point is 26.0mm, which can meet the index of 3 jet fuel. The yield of light naphtha is 5.10% by weight, the yield of tail oil is 37.2% by weight, and the BMCI values ​​are 5.2 and 11.9 respectively, all of which are high-quality steam cracking raw materials for ethylene production.

[0040] Table 1

[0041] Raw oil number

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Abstract

A mid-pressure hydrocracking method for producing jet fuel is employed under mid-pressure condition; under the control of a certain single- pass conversion, part of kerosene fractions are circulated to a feed tank, and refined, the refined kerosene fractions accounting for 30 percent of the total kerosene fractions. The method of the invention can improve the smoke point of the kerosene fractions and acquire No. 3 jet fuel satisfying GB 6537-2006 standard, and simultaneously acquire maximum high-quality tail oil. The invention has a simple process and low operation cost and equipment investment.

Description

technical field [0001] The present invention belongs to a method for obtaining low-boiling distillation cracking hydrocarbon oil in the presence of hydrogen, more specifically, it is a hydrocracking method for producing jet fuel under medium pressure conditions and concurrently producing steam cracking raw materials for ethylene production . Background technique [0002] There are three main methods for producing jet fuel in the oil refining industry: (1) The deep hydroprocessing method using straight-run kerosene fractions rich in aromatics or kerosene fractions obtained from secondary processing as raw materials. This method can significantly reduce the content of sulfur, nitrogen and aromatics, but consumes a lot of hydrogen and has high production costs. (2) Select the straight-run kerosene distillate of appropriate crude oil as the raw material, and use non-hydrogenation processing technology or hydrogenation process to remove mercaptans and reduce acid value when the ...

Claims

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Application Information

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IPC IPC(8): C10G67/02
Inventor 董建伟赵阳胡志海王子文毛以朝龙湘云聂红
Owner CHINA PETROLEUM & CHEM CORP
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