A hydrocracking method with low energy consumption and high yield of high-quality chemical raw materials

A technology of hydrocracking and chemical raw materials, which is applied in the fields of hydrotreating process, petroleum industry, and hydrocarbon oil treatment, etc. It can solve problems such as complex process flow, reduce engineering investment, reduce fuel consumption, engineering investment and operating energy consumption Reduced effect

Active Publication Date: 2016-10-26
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method can produce high-aromatic latent heavy naphtha and high-quality tail oil at the same time, but the process is more complicated than the conventional hydrocracking process, and has limitations. More than 60wt%, cetane number <30

Method used

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  • A hydrocracking method with low energy consumption and high yield of high-quality chemical raw materials
  • A hydrocracking method with low energy consumption and high yield of high-quality chemical raw materials
  • A hydrocracking method with low energy consumption and high yield of high-quality chemical raw materials

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Experimental program
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Effect test

Embodiment 1-5

[0041] Embodiment 1-5 adopts figure 1 The schematic flow shown is shown in Table 1 for the properties of the raw oil used. The FF-46 hydroprocessing catalyst and the hydrocracking catalyst I / hydrocracking catalyst II catalyst system with different volume ratios are selected. The composition and properties of the catalyst are shown in Table 1. 2. The processing condition and product property of embodiment 1-5 are listed in table 3.

[0042] The one stage mentioned in the embodiment refers to the single-stage series reaction section formed by the hydroprocessing reaction zone and the first hydrocracking reaction zone; the two stages refer to the second hydrocracking reaction zone.

[0043] The results of Examples 1-5 show that by using the hydrocracking method of the present invention, the heavy raw oil can be converted into high-quality high-value-added chemical raw materials such as light naphtha, heavy naphtha and hydrogenated tail oil.

[0044] Table 1 Main properties of r...

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Abstract

The invention discloses a hydrocracking method of low-nergy-onsumption productive high-quality chemical raw materials. After raw oil and hydrogen are mixed, the obtained mixture is subjected to heat transfer for two times and then passes through a heating furnace, the obtained object is sequentially subjected to hydrorefining and then passes through a first cracking reaction area, the obtained product is separated so as to obtain middle distillate, the middle distillate enters a second cracking reaction area to crack, wherein the first cracking reaction area is at least filled with two cracking catalysts, a catalyst I is filled in the upstream part, and a catalyst II is filled in the downstream part; and the catalyst I contains 30-70% of modified Y molecular sieve, the catalyst II contains 15-50% of modified Y molecular sieve, and the content of the modified Y molecular sieve in the catalyst I is 10-30% higher than the content of the modified Y molecular sieve in the catalyst II. In the method disclosed by the invention, a high-temperature and high-pressure countercurrent heat transfer technology and a hydrocracking catalyst grading technology are organically combined, and through the comprehensive utilization of hydrocracking reaction heat, while the selectivity of catalysts is maintained, the product quality is enhanced, and the construction investment and the energy consumption of operation are reduced.

Description

technical field [0001] The invention relates to a hydrocracking method, in particular to a hydrocracking method which uses different types of hydrocracking catalysts at the same time to produce high-quality chemical raw materials in a maximum amount with low energy consumption. Background technique [0002] With the rapid development of the world economy, the demand for chemical products has increased dramatically, and correspondingly, the demand for chemical raw materials for the production of these chemical products has also increased significantly. The production of chemical raw materials from petroleum fractions is one of the very important means. The most important chemical raw materials are benzene, toluene, xylene, ethylene, propylene, etc., and heavy naphtha obtained by hydrocracking of petroleum fractions is benzene, toluene, xylene It is an important source of light aromatics, and the obtained light naphtha and hydrocracking tail oil are high-quality raw materials ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G67/00
Inventor 彭冲方向晨曾榕辉黄新露吴子明王仲义崔哲孙士可
Owner CHINA PETROLEUM & CHEM CORP
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