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A method for measuring the particle size distribution of solids in catalytic cracking oil slurry

A technology for catalytic cracking oil slurry and measurement method, which is applied in the field of determination of particle size distribution of solids in catalytic cracking oil slurry, and can solve the problem that the particle size distribution measurement method cannot comprehensively and accurately reflect the solid particle size of oil slurry diameter distribution and other issues to achieve low cost, ensure accuracy, and reduce agglomeration

Inactive Publication Date: 2018-01-02
CHINA UNIV OF PETROLEUM (EAST CHINA)
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Problems solved by technology

[0004] In order to solve the technical problem that the existing commonly used particle size distribution measurement method cannot comprehensively and accurately reflect the particle size distribution of solids in oil slurry, the present invention provides a particle size distribution method for solids in catalytic cracking oil slurry Determination method

Method used

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  • A method for measuring the particle size distribution of solids in catalytic cracking oil slurry
  • A method for measuring the particle size distribution of solids in catalytic cracking oil slurry
  • A method for measuring the particle size distribution of solids in catalytic cracking oil slurry

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Experimental program
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Effect test

Embodiment 1

[0040] Jinzhou Petrochemical catalytic cracking oil slurry was used as the test object. The quality and dilution ratio of the oil slurry obtained are shown in Table 1. The filter membrane used is a polytetrafluoroethylene filter membrane. The particle size distribution measurement results are shown in Table 2 and figure 1 shown.

Embodiment 2

[0042] Jilin Petrochemical No. 1 catalyzed oil slurry was used as the test object. The selection of the oil slurry quality and dilution ratio is shown in Table 1. The filter membrane used is a polyvinylidene fluoride filter membrane. The particle size distribution measurement results are shown in Table 2 and figure 1 shown.

Embodiment 3

[0044] Jilin Petrochemical No. 2 oil slurry was used as the test object. The selection of the oil slurry quality and dilution ratio is shown in Table 1. The filter membrane used is a nylon filter membrane. The particle size distribution measurement results are shown in Table 2 and figure 1 shown.

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Abstract

The invention discloses a method for determining size distribution of solid particles in catalytic cracking oil slurry, and the method comprises the following steps: (1) carrying out a pretreatment for filter membranes of different apertures, and weighing for standby application; (2) carrying out a pretreatment for catalytic cracking oil slurry; (3) carrying out dilution for the oil slurry treated in the step (2), and carrying out ultrasonic concussion for the diluted oil slurry for standby; (4) filtering the oil slurry diluted in the step (3) with filter membranes of different apertures successively according to an application sequence from the ones with large apertures to the ones with small apertures; 5) carrying out a constant weight treatment of the filter membranes obtained after pumping filtration, and weighing after the constant weight treatment; (6) obtaining the mass of solid particles on each filter membrane according to mass differences of millipore filter membranes of different apertures before and after pumping filtration, acquiring the total mass of solid particles in the oil slurry by adding the additive operation, and calculating mass fractions of solid particles on millipore filter membranes of different apertures in total solid particles. The invention effectively solves the problem of incomplete gathering of solid particles in oil slurry, and can comprehensively reflect particle size distribution of solid particles in oil slurry.

Description

technical field [0001] The invention relates to a method for measuring particle size distribution, in particular to a method for measuring the particle size distribution of solid content in catalytic cracking oil slurry. Background technique [0002] Catalytic cracking oil slurry is an external by-product of the catalytic cracking process, which has become a potential raw material for the production of high value-added chemical products such as activated carbon, needle coke and carbon fiber because it contains a large amount of short-chain polycyclic aromatic hydrocarbons. However, the oil slurry generally contains more than 2g / L of catalyst particles and coke powder. These solid particles severely limit the efficient utilization of the oil slurry, so it is necessary to remove the solids in the oil slurry. During the operation of the catalytic cracking catalyst, due to collision and abrasion, catalyst fine powder with a smaller particle size than the fresh catalyst will be f...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N15/02
Inventor 林存辉王宗贤陈坤汤一强孔德辉宋政逹龚旭焦守辉王俊杰赵娜赵翔鵾李振芳郭爱军沐宝泉
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)
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