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Hydro-cracking method for improving quality of aviation kerosene

A technology for hydrocracking and jet fuel, applied in hydrotreating process, petroleum industry, processing hydrocarbon oil, etc., can solve the problems of large investment, increase operating cost, increase total airspeed, etc., to improve the quality and operation of jet fuel. Low cost and small changes

Active Publication Date: 2017-03-22
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] The above scheme can effectively improve the quality of aviation fuel, but there are also shortcomings: (1) additional operating costs will be added to the recycling operation of aviation fuel; in addition, circulating aviation fuel will increase the total airspeed, which will have a negative impact on the reaction system, especially Especially at the end of the reaction, the activity of the catalyst is greatly reduced, and increasing the space velocity will have a relatively large impact on the system; (2) the establishment of the second reaction zone requires an additional high-pressure reaction device, which requires a large investment

Method used

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  • Hydro-cracking method for improving quality of aviation kerosene
  • Hydro-cracking method for improving quality of aviation kerosene
  • Hydro-cracking method for improving quality of aviation kerosene

Examples

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Effect test

Embodiment 1

[0072]Feed oil and hydrogen are introduced into the hydrocracking reaction zone containing hydroprocessing pretreatment catalyst, hydrocracking catalyst and post-refining catalyst to react, the reaction conditions are as shown in Table 2; then the reaction flow out of the hydrocracking reactor The product is sequentially introduced into a high-pressure separator and a low-pressure separator for gas-liquid separation to obtain a liquid phase product, and the liquid phase product is introduced into the first fractionation tower for fractionation to obtain naphtha fraction, kerosene fraction, diesel fraction and tail oil fraction (the cut point of the naphtha fraction and the kerosene fraction is 145° C.; the cut point of the kerosene fraction and the diesel fraction is 270° C.; the cut point of the diesel fraction and the tail oil fraction is 320° C. ℃, the same below). The kerosene fraction obtained is introduced into a kerosene fractionation tower for further fractionation to ...

Embodiment 2

[0082] The raw oil and hydrogen are introduced into the hydrocracking reactor containing the hydrocracking catalyst and the post-refining catalyst for reaction, and the reaction conditions are shown in Table 2; then the reaction effluent of the hydrocracking reactor is sequentially introduced into the high-pressure separator Perform gas-liquid separation with a low-pressure separator to obtain liquid phase products, and introduce the liquid phase products into the first fractionation tower for fractionation to obtain naphtha fractions, kerosene fractions, diesel fractions and tail oil fractions. The obtained kerosene fraction is introduced into the kerosene fractionation tower for further fractionation to obtain light jet kerosene fraction, medium jet kerosene fraction and heavy jet kerosene fraction. Jet kerosene fractions are mixed to form jet kerosene products out of the device. Among them, the weight ratio of the extracted medium jet kerosene fraction to the jet kerosene p...

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Abstract

The invention relates to the oil refining field, and discloses a hydro-cracking method for improving the quality of aviation kerosene. The method comprises the following steps: subjecting a liquid phase product from a hydro-cracking reaction area to fractionation to obtain a naphtha fraction, a kerosene fraction, a diesel fraction, and a tail oil fraction; and (2) introducing the kerosene fraction obtained in the step (1) into a kerosene fractionating tower to obtain a light aviation kerosene fraction, a medium aviation kerosene fraction, and a heavy aviation kerosene fraction, extracting at least part of the medium aviation kerosene fraction, taking the light aviation kerosene fraction, the heavy aviation kerosene fraction, and residual medium aviation kerosene fraction as the aviation kerosene products, and discharging the aviation kerosene products from the kerosene fractionating tower. The provided method can economically, flexibly, and effectively improve the quality of aviation kerosene from a hydro-cracking device.

Description

technical field [0001] The invention relates to the field of oil refining, in particular to a hydrocracking method for improving the quality of aviation coal. 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 recently. 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 ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G67/00
Inventor 赵阳蒋东红王子文赵广乐董松涛龙湘云
Owner CHINA PETROLEUM & CHEM CORP
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