Method for rapidly representing activity of catalytic cracking catalyst

Abstract

The invention relates to a method for rapidly representing the activity of a catalytic cracking catalyst. The method comprises the following steps: (1) sorting selected catalysts; (2) determining potassium hydroxide index values and micro-activity index values of selected catalyst samples, and drawing a standard curvilinear equation of relationship between the potassium hydroxide index values and the micro-activity index values of the samples; and (3) measuring the potassium hydroxide index values of to-be-measured catalyst samples, substituting a measured result into the standard curvilinear equation so as to obtain the micro-activity index values of the to-be-measured samples, and representing the activity of the catalytic cracking catalyst. The method for representing the activity of the catalytic cracking catalyst is simple and rapid to operate, is low in capital input quantity, is accurate and reliable in result, and has practical significance in evaluating the cracking activity of the cracking catalyst.

Description

technical field [0001] The invention relates to a method for characterizing catalyst activity, in particular to a method for characterizing catalytic cracking catalyst activity. Background technique [0002] Catalytic cracking technology occupies a pivotal position in my country's petroleum processing industry. Nearly 80% of gasoline, more than 30% of diesel and 40% of propylene come from catalytic cracking units. Catalyst is one of the key factors to improve the catalytic cracking process, increase the conversion depth of catalytic cracking of heavy oil and the yield of light oil, and the activity of the catalyst has a great influence on the unit consumption of the catalyst in the catalytic device, improve product distribution, increase the yield of light oil, and optimize operating conditions and have a significant impact on overall performance. Catalytic performance evaluation usually uses micro-reaction evaluation as the basic method. The micro-reaction activity index o...

AI Technical Summary

Problems solved by technology

The potassium hydroxide index method uses the principle of neutralization to measure the activity of the catalyst by the number of milligrams of potassium hydroxide required per gram of sample, and obtains the corresponding activity index value to indicate the activity of the catalyst. The operation process is simple and does not require equipment, but this method can only reflect the relative size of the catalyst activity, and cannot truly and accurately measure the activity value of the catalyst

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