Spherical particle surface liquid phase information identification method, system and medium

A spherical particle and information identification technology, applied in the direction of instrumentation, design optimization/simulation, calculation, etc., can solve problems such as lack of knowledge and ambiguity of the details of the gas-liquid phase behavior of the trickle bed, so as to increase the number of monitoring lines and reduce calculations Quantity and data post-processing time, and the effect of improving accuracy
CN114444362APending Publication Date: 2022-05-06CHINA UNIV OF PETROLEUM (BEIJING)
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CHINA UNIV OF PETROLEUM (BEIJING)
Publication Date
2022-05-06

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Abstract

The invention belongs to the technical field of petrochemical engineering, and relates to a spherical particle surface liquid phase information identification method and system and a medium, and the method comprises the steps: constructing a double-layer O-block structure grid for a single spherical particle, and simulating the surface of the spherical particle based on a VOF model; a monitoring line is arranged on the surface of the spherical particle in the radius direction, and liquid phase fraction information of the monitoring line is calculated; according to the spatial positions of the monitoring lines, grids on the surface of the spherical particles in each monitoring line and a hemisphere to which each monitoring line belongs are judged; and according to the liquid phase fraction information of the monitoring lines on the grids on the surfaces of the spherical particles, calculating the liquid phase wetting rate and liquid film average thickness of the surfaces of the spherical particles, the liquid phase volumes corresponding to the monitoring lines and the liquid holdup of the surfaces of the spherical particles, and drawing a mapping cloud picture in the vertical direction in an upper hemisphere and a lower hemisphere. The method can be used for carrying out auxiliary analysis and identification on liquid phase information on micro-scale single spherical particles in a trickle bed.
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Description

technical field

[0001] The invention relates to a method, system and medium for identifying liquid phase information on the surface of spherical particles, belonging to the technical field of petrochemical industry, in particular to the technical field of judging the microscopic liquid phase flow state in the bed of a trickle bed hydrogenation reactor. Background technique

[0002] As a widely used reactor in diesel hydrodesulfurization process, the trickle bed hydrogenation reactor often has the problem of low reaction efficiency, so a large amount of excess circulating hydrogen is required in actual operation; the liquid phase hydrogenation reactor proposed and industrialized in recent years Hydrogenation technology dissolves hydrogen in the oil phase, and changes a large amount of circulating hydrogen into a large amount of circulating oil. Although there is some improvement in energy consumption and other aspects, it still does not change the problem of excessive material...

Claims

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