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A method for producing both jet fuel and low-condensation diesel

A diesel and kerosene technology, applied in the treatment of hydrocarbon oil, petroleum industry, hydrotreating process, etc., can solve the problems of low yield of jet fuel, strict content requirements, complicated operation, etc., and achieve the effect of high flexibility

Active Publication Date: 2021-05-14
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The preparation of aviation fuel by the isomerization dewaxing method using noble metal catalysts has strict requirements on the content of sulfur and nitrogen in the feed; the hydrotreating and isomerization dewaxing catalysts need to be packed in two reactors separately, and the reactors need to be separated. Equipped with a stripping tower, the equipment investment is large and the operation is complicated
Although the mixed feed of heavy distillates and n-paraffins can meet the feed requirements of the isomerization section and does not need to set up a hydrotreating section, the yield of jet fuel obtained by this method is relatively low

Method used

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  • A method for producing both jet fuel and low-condensation diesel

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Embodiment 1

[0080] This embodiment adopts figure 1 The process flow shown is carried out, the properties of the raw oil are shown in Table 1, and the operating conditions are shown in Table 2. The dry point of light kerosene fraction a1 is 240°C, the dry point of heavy kerosene fraction a2 is 260°C, and the dry point of heavy diesel oil fraction b2 30% by weight is circulated back to the hydrogen decondensation reaction zone. The properties of the resulting product are shown in Table 3.

Embodiment 2

[0082] This embodiment adopts figure 1 The process flow shown is carried out, the properties of the raw oil are shown in Table 1, and the operating conditions are shown in Table 4. The dry point of the light kerosene fraction a1 is 240°C, the dry point of the heavy kerosene fraction a2 is 270°C, and the dry point of the heavy diesel fraction b2 50% by weight is recycled back to the hydrogen decondensation reaction zone. The properties of the product obtained are shown in Table 5.

Embodiment 3

[0084] This embodiment adopts figure 1 The process flow shown is carried out, the properties of the feed oil are shown in Table 1, and the operating conditions are shown in Table 4. The dry point of the light kerosene fraction a1 is 250°C, the dry point of the heavy kerosene fraction a2 is 300°C, and the dry point of the heavy diesel fraction b2 90% by weight is recycled back to the hydrogen decondensation reaction zone. The properties of the resulting product are shown in Table 6.

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Abstract

The invention relates to the field of heavy raw material processing, and discloses a method for concurrently producing jet fuel and low-point diesel oil, comprising: fractionating raw material oil to obtain light kerosene fraction a1 and diesel fraction b1; and hydrogenating the diesel fraction b1 in sequence Treating the reaction zone and the hydrodepreciation reaction zone to obtain the hydrodepreciation oil; introducing the hydrodecondensation oil and the light kerosene fraction a1 into the hydrofinishing reaction zone for hydrofinishing, and the resulting stream After separation and fractionation, heavy kerosene fraction a2 and diesel fraction b2 are obtained; the resulting heavy kerosene fraction a2 is used as aviation fuel product, and part of the diesel fraction b2 is used as low-condensation diesel fraction, and the remaining part of the diesel fraction b2 is recycled back to the In the hydrogen decondensation reaction zone mentioned above. The method of the invention can convert heavy raw materials into high-dry-point jet fuel, and simultaneously realizes the increase of jet fuel production while taking into account the production of low-condensation diesel oil, and the production scheme has significantly higher flexibility than the prior art.

Description

technical field [0001] The invention relates to the field of heavy raw material processing, in particular to a method for concurrently producing jet fuel and low-condensation diesel. Background technique [0002] With the improvement of my country's energy saving, emission reduction and environmental protection requirements, the pace of diesel quality upgrading has been accelerated. At the same time, my country's economic growth is slowing down, domestic apparent consumption of diesel oil is decreasing year by year, and the trend of excess diesel oil is obvious. Refining companies are faced with the contradiction of increasing costs to produce high-quality diesel products and the continuous decline in prices caused by excess diesel resources, and the business environment of enterprises has deteriorated significantly. [0003] Therefore, it is imperative to improve enterprise efficiency by optimizing product structure. [0004] With the development of the economy, the oil c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G67/00
Inventor 高杰李洪辉郭庆洲王鲁强牛传峰夏国富黄卫国毕云飞李洪宝
Owner CHINA PETROLEUM & CHEM CORP