Method for determining size distribution of solid particles 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 the effect of low cost, good repeatability and high accuracy
CN105004643AInactive Publication Date: 2015-10-28CHINA UNIV OF PETROLEUM (EAST CHINA)
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CHINA UNIV OF PETROLEUM (EAST CHINA)
Publication Date
2015-10-28
Estimated Expiration
Not applicable · inactive patent

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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.
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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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