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Hydrogenation method for processing heavy oil

An oil product and heavy-duty technology, which is applied in the fields of hydrotreating process, petroleum industry, hydrocarbon oil treatment, etc., can solve the problem of less deposited metal in the protection reactor, and achieve the effect of increasing operating efficiency and improving economy

Active Publication Date: 2012-05-16
CHINA PETROLEUM & CHEM CORP +1
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  • Abstract
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  • Claims
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Problems solved by technology

[0005] The technical problem to be solved by the present invention is the defect that the amount of deposited metal in the protection reactor is relatively small in the prior art. Extends the operating cycle of the catalyst for the entire reaction series

Method used

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  • Hydrogenation method for processing heavy oil
  • Hydrogenation method for processing heavy oil
  • Hydrogenation method for processing heavy oil

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Embodiment 1

[0027] according to figure 1 The processing flow of the vacuum residue raw material containing high metal content and sulfur content. It consists of two parallel fixed bed flow reactors a1 and a2, and two conventional downflow hydrotreating reactors b and c. The mixture of vacuum residue, vacuum gas oil and hydrogen is sent to one of two parallel upflow fixed-bed reactors a1 and a2 through pipe 11. The mostly metal-depleted effluent enters the top of conventional hydrotreating reactor b via line 12, and then enters reactor c for further removal of carbon, sulfur and nitrogen. The hydrotreated product can be used as feedstock for further processes such as hydrocracking or FCC.

[0028] The catalyst used is a catalyst developed by the Petrochemical Science Research Institute. Catalysts were produced by Catalyst Changling Branch of China Petroleum & Chemical Corporation. The loading situation of the catalyst in each reactor is:

[0029] The catalysts in the a1 and a2 reactor...

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Abstract

The invention discloses a hydrogenation method for processing heavy oil. Raw heavy oil is mixed with hydrogen, the mixture enters a hydrogenating protective reaction area, reaction effluent directly enters a hydrotreatment reaction area without separation and is subjected to hydrotreatment reaction, and at least two parallelly connected up-flow hydrogenating protective reactors which can be switched in turn are arranged in the hydrogenating protective area. A method of grading four hydrogenating protective agents is adopted and particularly favorable for removing metals, so that blockage is avoided, the service life of a main catalyst is prolonged and the operating period of a device is prolonged. A switchable operating method is adopted, and all catalysts having activity can be fully utilized; and compared with the prior art, the method has the advantages that: the running period of a residual oil hydrogenation device can be prolonged by 20 to 40 percent, so that the running efficiency of the residual oil hydrogenation device is improved and the economic efficiency is improved.

Description

technical field [0001] The invention relates to a treatment method for heavy hydrocarbon oil under the condition of hydrogen existence. Background technique [0002] The heavy oil hydrogenation process is a heavy oil deep processing technology. In the presence of hydrogen and catalysts, the heavy oil is subjected to hydrodesulfurization, hydrodenitrogenation, hydrodemetallization, residual carbon conversion and hydrocracking. reaction, the obtained hydrogenated heavy oil can be used as feedstock for high-quality catalytic cracking (FCC) to produce light oil products, so as to achieve the maximum light weight of heavy oil. In addition, the use of hydrotreated heavy oil as FCC feed can reduce the sulfur content of FCC gasoline, and at the same time reduce the emissions of SOx and NOx in FCC flue gas. Therefore, the processing scheme of hydrogenation of heavy oil can maximize light distillate oil, so as to make full use of crude oil resources. [0003] In the prior art, heavy...

Claims

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Application Information

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IPC IPC(8): C10G65/04
Inventor 邵志才戴立顺牛传峰刘涛杨清河孙淑玲
Owner CHINA PETROLEUM & CHEM CORP
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