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Title:
INFERIOR HEAVY OIL PROCESSING METHOD AND SYSTEM
Document Type and Number:
WIPO Patent Application WO/2023/124769
Kind Code:
A1
Abstract:
An inferior heavy oil processing method and system. The method comprises: fully mixing inferior heavy oil, a catalyst, and hydrogen, carrying out a shallow hydrocracking reaction, and carrying out gas-liquid separation on a product obtained by the reaction to obtain a liquid-phase product; mixing the liquid-phase product with a composite flocculant, and then carrying out continuous deposition to obtain an overflow material and an underflow material by means of separation; fractionating the overflow material to obtain unconverted oil; and fully mixing the remaining unconverted oil from which tail oil has been removed, the catalyst, and hydrogen and then carrying out a deep hydrocracking reaction, carrying out gas-liquid separation on a product obtained by the reaction to obtain a liquid-phase product, then separately fractionating the liquid-phase product or fractionating the liquid-phase product together with the overflow material, to obtain a light oil product. According to the method and the system, risks of coke formation and blockage of devices such as a slurry bed hydrogenation reactor and a subsequent fractionating tower can be greatly lowered while the product yield is ensured, thereby improving the operation stability and prolonging the operation period of the device.

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Inventors:
YANG XU (CN)
YANG DONGHAO (CN)
SU WU (CN)
ZHANG BOHAN (CN)
ZHANG XIAO (CN)
LU JINGMAN (CN)
TAN QINGFENG (CN)
ZHOU ZHIYUAN (CN)
HU CHANGLU (CN)
Application Number:
PCT/CN2022/136128
Publication Date:
July 06, 2023
Filing Date:
December 02, 2022
Export Citation:
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Assignee:
PETROCHINA CO LTD (CN)
International Classes:
C10G67/14; C10G47/00; C10G65/02; C10G67/02; C10G69/02
Foreign References:
CN104109558A2014-10-22
CN107739627A2018-02-27
CN110373228A2019-10-25
CN106147845A2016-11-23
CN102311790A2012-01-11
Attorney, Agent or Firm:
BEIJING SANYOU INTELLECTUAL PROPERTY AGENCY LTD. (CN)
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