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Middle-pressure hydrocracking method for producing aviation kerosene and low-freezing point diesel

A technology for hydrocracking and diesel oil, which is applied in hydrotreating process, petroleum industry, processing hydrocarbon oil, etc., can solve the problem of not being qualified, and achieve the effect of high smoke point, simple process, low equipment investment and operating cost

Active Publication Date: 2013-04-24
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This invention can produce jet fuel with qualified indicators such as smoke point and aromatics content under relatively low reaction pressure, but this process method cannot directly obtain qualified jet fuel in the hydrocracking unit, and still needs to be mixed with straight-run kerosene Hydrofining

Method used

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  • Middle-pressure hydrocracking method for producing aviation kerosene and low-freezing point diesel

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Effect test

Embodiment 1

[0043] At reaction pressure 8.0MPa, refining section reaction temperature 373℃, cracking section reaction temperature 366℃, volumetric space velocity 1.2h -1 / 2.0h -1 , Under the reaction conditions of the hydrogen-to-oil volume ratio of 1200, the hydrorefining catalyst and the hydrocracking catalyst C are used for the reaction, the reaction raw material is raw material A, and the process flow is one pass. The distribution results of the liquid hydrocarbon products obtained by the reaction are shown in Table 2. The properties of jet fuel and diesel oil fractions obtained by cutting liquid hydrocarbon products are listed in Table 3.

Embodiment 2

[0048] At reaction pressure 10.0MPa, refining section reaction temperature 374℃, cracking section reaction temperature 365℃, volumetric space velocity 1.2h -1 / 2.0h -1 , Under the reaction conditions of the hydrogen-to-oil volume ratio of 1200, the hydrorefining catalyst and the hydrocracking catalyst C are used to hydrogenate the raw material B, and the process flow is one pass. The distribution results of liquid hydrocarbon products are shown in Table 4; the liquid hydrocarbon products are cut, and the properties of jet fuel and diesel distillate products are listed in Table 5.

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Abstract

The invention discloses a middle-pressure hydrocracking method for producing aviation kerosene and low-freezing point diesel. The method comprises the steps that a single-section serial one-time passing flow is adopted under a middle pressure condition; the heated material and hydrogen enter a hydrotreatment reactor; reaction effluent enters a hydrocracking reactor without separation, and reacts under the existence of a hydrocracking catalyst; the generated reaction effluent is subjected to oil-gas separation and then cyclically used after being compressed by the obtained hydrogen-rich gas; the obtained liquid is distilled to obtain a little of pyrolytic naphtha; and a large part of product is middle distilled oil fraction. By adopting the method provided by the invention, 3# aviation kerosene and low-freezing point diesel meeting the GC6537-2006 standard are prepared from light wax oil or a mixed material of the light wax oil and FCC light cycle oil under the middle pressure condition. The method disclosed by the invention is simple in flow, low in operating cost, and low in device investment.

Description

Technical field [0001] The invention belongs to a method for preparing hydrocarbon oil in the presence of hydrogen, and more specifically, is a medium-pressure hydrocracking method for producing aviation fuel and low-pour-point diesel under medium pressure conditions. Background technique [0002] Hydrocracking technology, due to its ability to process heavy raw materials, high liquid yield, excellent product properties, flexible product solutions and device operations, is one of the effective means of lightening crude oil. With more stringent environmental protection requirements worldwide and heavy and degraded crude oil, hydrocracking technology has become more popular. Traditional high-pressure hydrocracking technology, due to high pressure, large investment in equipment, and high operating costs, has limited its industrial application. Therefore, since the 1980s, some oil companies and research units at home and abroad have devoted themselves to the development of hydrocrac...

Claims

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Application Information

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IPC IPC(8): C10G67/02
Inventor 赵阳董建伟胡志海董松涛王子文龙湘云聂红
Owner CHINA PETROLEUM & CHEM CORP
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