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Hydrogenation cracking method of mass production of chemical materials

A technology of hydrocracking and chemical raw materials, which is applied in the field of hydrocarbon oil cracking, and can solve problems such as limiting the role of hydrocracking technology

Active Publication Date: 2006-11-01
CHINA PETROLEUM & CHEM CORP +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] The existing hydrocracking technology is mostly used to produce high-quality vehicle (or aircraft) transportation fuel, and there are few related technologies for prolific chemical light oil, which limits the application of hydrocracking technology to a certain extent. The effect of increasing the production of chemical light oil

Method used

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  • Hydrogenation cracking method of mass production of chemical materials

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Experimental program
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Effect test

Embodiment 1

[0052] Using VGO with a nitrogen content as high as 2516 μg / g as raw material A, the denitrification effects of the refined catalyst M with high denitrification activity and the comparative refined catalyst N are listed in Table 3.

[0053] It can be seen from Table 3 that, under the same reaction conditions, compared with the comparative hydrofinishing catalyst N, the refined oil nitrogen content of the hydrofinishing catalyst M of the present invention is significantly reduced. At 360°C and 380°C, the hydrodenitrogenation activity was increased by 28% and 26% compared with the industrial reference agent, respectively.

Embodiment 2

[0055] Using VGO as raw material B, a hydrocracking test was carried out. In the test, the types of refined catalysts are the same, and the loading amount and loading size are the same. Table 4 is the test results.

[0056] As can be seen from Table 4, under the same situation of conversion depth, that is, under the same tail oil yield, the cracking catalyst O of the present invention can improve product distribution, and has the effect of improving the yield of chemical raw materials, which can be increased by 3 percentage points above.

Embodiment 3

[0058] Using high-sulfur and high-nitrogen heavy VGO as raw material C, a hydrocracking test was carried out according to the catalyst and process flow provided by the present invention. The test results are listed in Table 5-7.

[0059] As can be seen from the data in the table, adopting the method provided by the present invention can reduce the middle distillate yield to the minimum under the condition of hydrogen partial pressure of 12.0MPa, which is 0; The total yield of heavy naphtha and tail oil products reaches 98.7% by weight. It shows that the method can maximize the production of chemical raw materials under relatively mild reaction conditions.

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Abstract

A kind of hydrocracking method by which the maximum industrial chemicals can be produced, the raw oil and hydrogen will go into the first reaction zone after being heated and contact with hydrofining catalyst and hydrocracking catalyst in turn, the gas which riches in hydrogen and gained after the gas and oil separating of the reactant will be compressed and recycled, the liquid will be fractioned and light naphtha, weight naphtha, diesel oil fraction and tail oil fraction can be gained, the diesel oil fraction will be mixed with the circular hydrogen after the it's press being added, and then contacts with hydrocracking catalyst. The reactant liquor of this step will be mixed with that of above step and go into the separation and fractionation system. The industrial chemicals more than 98% of the raw calculated by weight, which contains liquid gas, light naphtha, weight naphtha, and tail oil can be gained with the method.

Description

technical field [0001] The present invention belongs to a kind of hydrocracking method for obtaining low-boiling fractions in the presence of hydrogen, more specifically, a hydrocracking method for producing chemical raw materials. Background technique [0002] my country's national economy is expected to maintain rapid growth for more than two decades. Statistics show that if GDP increases by 1%, the demand for oil products will increase by 0.5%, and the demand for petrochemical products will increase by 1%. It can be seen that the demand for oil products and petrochemical products will continue to grow rapidly in the future, and the growth rate of demand for petrochemical products is much higher than that of oil products. The limited crude oil resources and how to obtain the most basic raw materials for the production of petrochemical products (such as ethylene and aromatics) will become a prominent contradiction that the petrochemical industry must ...

Claims

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Application Information

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IPC IPC(8): C10G65/12
Inventor 胡志海熊震霖李毅董建伟蒋东红聂红石亚华李大东
Owner CHINA PETROLEUM & CHEM CORP
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