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Heavy crude oil hydrocracking method

A technology for hydrocracking and heavy crude oil, used in hydrocarbon oil cracking, petroleum industry and other directions, can solve the problems of heavy crude oil difficulty, fast catalyst deactivation, etc., to protect the main catalyst, improve pipeline performance, and reduce viscosity. Effect

Active Publication Date: 2010-06-30
CHINA PETROLEUM & CHEM CORP +1
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  • Abstract
  • Description
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Problems solved by technology

[0009] The purpose of the present invention is to provide a method for hydrocracking of heavy crude oil on the basis of the prior art. The technical problem to be solved is the difficulty in processing heavy crude oil with an API degree less than 20 on a fixed bed, and the problem of rapid catalyst deactivation.

Method used

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  • Heavy crude oil hydrocracking method

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Effect test

Embodiment 1

[0037] After the raw material oil E is mixed with hydrogen, it enters four hydrogenation reactors in turn for hydrogenation reaction. Among them, the first reactor (referred to as the first reactor, and the following analogy) is filled with hydrogenation protection agent A and hydrodemetallization agent B, and the second reactor is filled with Hydrodesulfurizing agent C, three reverse loading hydrocracking agent D, four reverse loading hydrodesulfurizing agent C. After cooling, the hydrogenation reaction product enters the high-pressure separator for gas-liquid separation to obtain hydrogen-rich gas and liquid products. The hydrogen-rich gas is recycled back to the hydrogenation reactor, and the liquid product is crude oil after hydrocracking. The loading ratios of catalysts and hydrogenation reaction conditions in this example are shown in Table 3; the properties of the obtained hydrogenated crude oil are shown in Table 4 after the above-mentioned flow process was continuously...

Embodiment 2

[0040] The raw material oil F is mixed with hydrogen and then enters four hydrogenation reactors for hydrogenation reaction. The first reactor (first reactor) is filled with hydrogenation protection agent A and hydrodemetallization agent B, and the second reactor is filled with hydrodesulfurization agent. C, three reverse loading hydrocracking agent D, four reverse loading hydrodesulfurization agent C. After cooling, the hydrogenation reaction product enters the high-pressure separator for gas-liquid separation to obtain hydrogen-rich gas and liquid products. The hydrogen-rich gas is recycled back to the hydrogenation reactor, and the liquid product is crude oil after hydrocracking. The loading proportions and reaction conditions of the catalysts in this example are shown in Table 3. The properties of the obtained hydrogenated crude oil were shown in Table 4 after the above-mentioned process was continuously operated for 500 hours.

[0041] It can be seen from Table 4 that aft...

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Abstract

The invention relates to a heavy crude oil hydrocracking method. In the method, heavy crude oil is sequentially subjected to the steps of a hydrogenation protective agent, a hydrodemetallization agent, a hydrodesulfurization agent I, a hydrocracking agent and a hydrodesulfurization II in the presence of hydrogen, wherein the filling weight percentage of the hydrogenation protective agent, the hydrodemetallization agent, the hydrodesulfurization agent I, the hydrocracking agent and the hydrodesulfurization agent II are respectively 2-20%, 10-78%, 10-78%, 5-50% and 5-50% by taking an integral catalyst as a reference. According to the method provided by the invention, the heavy crude oil with the API (American Petroleum Institute) degree smaller than 20 can be processed to obtain hydrogenated crude oil with enhanced API and reduced viscosity, and moreover, the operating period of a hydrogenation processing device is prolonged.

Description

technical field [0001] The present invention belongs to a method for refining crude oil in the presence of hydrogen, more specifically to a method for hydrocracking heavy crude oil. Background technique [0002] The relative density of crude oil has a great impact on its mining, storage, transportation and processing costs, and directly affects economic benefits. In the international oil market, crude oil is priced according to its quality, and relative density is an important indicator reflecting its quality. It is customary in international business to use API degree to express the weight of crude oil, and its relationship with relative density is: [0003] API = 141.5 d 15.6 15.6 - 131.5 [0004] It can be seen from the formula that the smaller the relative density, the larger the corresponding API degree, and the heavier the crude oil, the smaller the API...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G47/00C10G47/02
Inventor 刘涛董松涛牛传峰戴立顺邵志才杨清河李大东
Owner CHINA PETROLEUM & CHEM CORP
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