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Hydrocracking method for producing aviation kerosene

A technology of hydrocracking and jet fuel, which is applied in the field of oil refining, can solve the problems of limited application fields, and achieve the effect of simple process, low operating cost and cost saving

Active Publication Date: 2022-05-06
CHINA PETROLEUM & CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The quality of aviation fuel obtained by the method provided by the prior art can only meet the national standard, and it is almost impossible to meet the requirements exceeding the national standard. Therefore, it has the defect of limited application field

Method used

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  • Hydrocracking method for producing aviation kerosene
  • Hydrocracking method for producing aviation kerosene
  • Hydrocracking method for producing aviation kerosene

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0075] The raw material oil A shown in Table 1 and hydrogen are introduced into the hydrofinishing reaction zone containing the hydrofinishing catalyst, the hydrocracking catalyst and the post-refining catalyst hydrocracking reaction zone to react, and the reaction conditions are as shown in Table 2; Then the reaction effluent of the hydrocracking reaction zone is introduced into a high-pressure separator and a low-pressure separator successively for gas-liquid separation to obtain a liquid phase product, and the liquid phase product is successively introduced into a hydrogen sulfide stripping tower and a fractionating tower, Carry out fractionation in fractionating tower, obtain naphtha fraction, kerosene fraction, diesel oil fraction and tail oil fraction (the cut point of described naphtha fraction and described kerosene fraction is 155 ℃; The cut point of described kerosene fraction and described diesel oil fraction The cut point is 250°C; the cut point of the diesel fracti...

Embodiment 2

[0077] The raw material oil A shown in Table 1 was used, and the process was carried out in the same manner as in Example 1, except that the process conditions were changed as shown in Table 2, and the tail oil recycling ratio was 64.3% by weight. The yields of product naphtha fraction, product diesel fraction and tail oil product are shown in Table 3, and the properties of jet fuel products are shown in Table 4.

Embodiment 3

[0081] The raw material oil B shown in Table 1 was used, and the process was carried out in the same manner as in Example 1, except that the process conditions were changed as shown in Table 2, and the tail oil recycling ratio was 32.4% by weight. The yields of product naphtha fraction, product diesel fraction and tail oil product are shown in Table 3, and the properties of aviation fuel products are shown in Table 4.

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Abstract

The invention relates to the field of oil refining, in particular to a hydrocracking method for producing aviation kerosene, which comprises the following steps: 1) in the presence of hydrogen, sequentially introducing raw oil into a hydrofining reaction zone and a hydrocracking reaction zone for contact reaction; 3) fractionating a liquid-phase product in the effluent to obtain a naphtha fraction, a kerosene fraction, a diesel fraction and a tail oil fraction; (4) carrying out gas-liquid separation on the kerosene fraction to respectively obtain a gas phase which can be recycled to the step (3) for fractionation and a liquid phase which is taken as an aviation kerosene product to be discharged from the device; wherein at least part of the tail oil fraction is circulated back to the hydrocracking reaction zone to participate in the contact reaction. According to the method provided by the invention, the aviation kerosene quality of the hydrocracking unit can be economically, flexibly and effectively improved, and the aviation kerosene obtained by the method is high in smoke point and low in density.

Description

technical field [0001] The invention relates to the field of oil refining, in particular to a hydrocracking method for producing jet fuel. Background technique [0002] The continuous development of my country's national economy has promoted the rapid improvement of transportation capacity, and the demand for air transportation fuel is also increasing. Usually, the sources of aviation kerosene fractions mainly include: sweetening of kerosene fractions obtained through distillation units; and production of jet kerosene by hydrocracking process of vacuum wax oil. Due to the limitation of the crude oil processing capacity and the yield of jet fuel fraction obtained by the distillation unit, its output is relatively fixed; while the hydrocracking process can convert heavy distillate oil into light products, by adjusting the operation and improving the catalyst The selectivity and the improvement of the technological process and other means, the jet fuel yield can be flexibly ch...

Claims

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Application Information

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IPC IPC(8): C10G67/14
CPCC10G67/14
Inventor 史家亮于永久刘劲松王阳任谦倪前银王鑫
Owner CHINA PETROLEUM & CHEM CORP
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