Method for measuring catalyst abrasion resisting capability

Abstract

The invention discloses a method for measuring a catalyst abrasion resisting capability. The method is aimed to solve the problems that repeatability of measurement results is not good, number of catalyst samples abrased for each time is low, structures of measurement devices and measurement operations are complex and the like in the prior art. A catalyst abrasion device used in the method is equipped with a motor, connection rods (4) and more than three abrasion pipes (3). One end of each connection rod is fixed on the output shaft of the motor, and the other end of the connection rod is connected with one end of one abrasion pipe in a detachable manner. Through rotation of the abrasion pipes, a catalyst sample loaded into the cavity of each abrasion pipe is abrased, then the abrasion pipe is dismounted, and the abrased catalyst sample is poured out. Size distribution of the catalyst sample before and after abrasion is measured through a granularity analyzer. The abrasion resisting capability of the catalyst is determined according to the difference between volume percentages of fine catalyst particles in the catalyst sample before and after abrasion. The method is mainly used for measuring the abrasion resisting capability of petroleum processing fluidization catalytic cracking catalysts.

Description

technical field [0001] The invention relates to a method for measuring the anti-wear ability of a catalyst. Background technique [0002] Particle size distribution is the key control index of fluid cracking catalyst, which has a great influence on the fluidization performance and reaction performance of the catalyst. The reduction of fine catalyst particles (that is, fine catalyst powder) in the fluidized cracking catalyst will deteriorate the fluidization and circulation of the catalyst; too much fine catalyst particles will increase the workload of the cyclone separator and reduce the separation efficiency of the cyclone separator , causing catalyst running loss and increasing production cost. For all fluidized bed reactors, the catalyst will rub against the reactor wall and the processing raw materials during use, and friction will also occur between the catalysts, which will inevitably cause the wear of the catalyst particles and produce fine catalyst particles . If ...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a method for measuring the anti-wear ability of catalysts, so as to solve the problems in the prior art that the coarse and fine catalyst particles cannot be completely distinguished, the repeatability of the measurement results is not good, the number of catalyst samples worn each time is small, and the determination of catalyst particles is difficult. The structure of the device and the measurement operation are relatively complicated, etc.

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