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Method for Determining the Molecular Structure of Additives for Nickel Removal in Heavy Oil

A molecular structure and additive technology, applied in the treatment of hydrocarbon oil, petroleum industry, refined hydrocarbon oil, etc., can solve the problems of fast deactivation of HDM catalyst, difficult disposal of waste catalyst, huge equipment investment, etc., and achieve fast and accurate calculation results. A large number of experiments, the effect of saving experimental costs

Active Publication Date: 2022-03-11
CHINA PETROLEUM & CHEM CORP +1
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  • Claims
  • Application Information

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Problems solved by technology

The disadvantage of this technology is that the equipment investment is huge, the HDM catalyst deactivates quickly, and it is difficult to regenerate, making it difficult to dispose of the spent catalyst

Method used

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  • Method for Determining the Molecular Structure of Additives for Nickel Removal in Heavy Oil
  • Method for Determining the Molecular Structure of Additives for Nickel Removal in Heavy Oil
  • Method for Determining the Molecular Structure of Additives for Nickel Removal in Heavy Oil

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Embodiment Construction

[0037] The specific implementation manners of the embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation manners described here are only used to illustrate and explain the embodiments of the present invention, and are not intended to limit the embodiments of the present invention.

[0038] An embodiment of the present invention provides an additive for removing nickel in heavy oil, the molecular structure of the additive satisfies the following conditions:

[0039] The Connolly surface area A of the molecular structure of the additive is in

[0040] The Chi index χ of the molecular structure of the additive is in the range of 25 to 30;

[0041] The dipole moment μ of the molecular structure of the additive is in the range of 0.1-0.6 Debye.

[0042] The nickel in the heavy oil is removed in a demetallization tower by adding additives with a molecular struc...

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Abstract

The invention proposes a method for determining the molecular structure of an additive for removing nickel in heavy oil, an additive for removing nickel in heavy oil, a method for removing nickel in heavy oil, and a machine-readable storage medium. The method for determining the molecular structure of the additive used to remove nickel in heavy oil of the present invention comprises: obtaining the molecular structure of the additive used to remove nickel in heavy oil; calculating the Connolly surface area A of the molecular structure of the additive; calculating the Chi of the molecular structure of the additive Index χ; calculate the dipole moment μ of the molecular structure of the additive; judge whether the Connolly surface area A, the Chi index χ, and the dipole moment μ of the molecular structure of the additive are within respective predetermined ranges; the Connolly surface area of ​​the molecular structure of the additive A. When Chi index χ and dipole moment μ are within their respective predetermined ranges, it is determined that the molecular structure of the additive can be used to remove nickel in heavy oil. The method of the invention can remove the nickel in the heavy oil by using the above-mentioned additive, and the calculation result is fast and accurate.

Description

technical field [0001] The invention relates to a method for removing metal in heavy oil, in particular to a method for removing nickel in heavy oil. Background technique [0002] Among the many metal elements in heavy oil, nickel, vanadium, iron, sodium, calcium, copper and arsenic can cause catalyst poisoning. Compared with other metal elements, nickel and vanadium mostly exist in the form of porphyrin and non-porphyrin organic complexes. Among gums and asphaltenes, it is difficult to remove them by general methods. In the catalytic cracking process, the metal nickel generated during the reaction has a strong dehydrogenation ability, and deposits on the catalyst lead to an increase in the generation of gas and coke. However, part of the catalytic feedstock and cracked products are dehydrogenated to generate oily polycyclic aromatic hydrocarbon polymers or coke, resulting in a decrease in liquid yield, so the metal nickel porphyrin compound has a great influence on the sel...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G29/20G16C20/10
CPCC10G29/20G16C20/10C10G2300/205C10G2300/80
Inventor 任强赵晓光赵毅王丽新王春璐叶蔚甄曲亚坤代振宇周涵
Owner CHINA PETROLEUM & CHEM CORP
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