A method for performance evaluation of catalysts for propane dehydrogenation to propylene

Abstract

The invention provides a performance evaluation device for a catalyst for propane dehydrogenation to propylene, which comprises a computer control part, a gas path part, a reaction part connected with the gas path part and an analysis and detection part connected with the reaction part. The present invention also provides a method for evaluating the performance of the catalyst for propane dehydrogenation to propylene by using the device. The method can not only evaluate the performance of the active catalyst, but also regenerate and regenerate the catalyst with reduced activity or deactivation. The performance of the regenerated catalyst was evaluated. The invention is simple in structure and reasonable in design, can meet the requirements of catalytic reaction and catalyst regeneration, realize the continuous three stages of catalyst reaction, regeneration and activation, and improve the efficiency of catalyst performance evaluation. The device is not only suitable for propane dehydrogenation to propylene reaction, but also suitable for hydrogenation, dehydrogenation, oxidation, cracking or isomerization of other alkanes.

Description

technical field [0001] The invention belongs to the technical field of chemical experiments, and in particular relates to a performance evaluation device and an evaluation method of a catalyst for propane dehydrogenation to propylene. Background technique [0002] Catalyst performance evaluation is an important part of catalyst production and application. Catalyst performance evaluation results can most directly reflect the activity of catalysts and are the standard for judging whether catalysts are qualified. The performance evaluation of laboratory fixed-bed catalysts is usually carried out in fixed-bed reaction devices. Traditional laboratory fixed-bed reaction devices are usually fully manual operations, and the control of gas inlet, liquid inlet, catalytic reaction, and analysis and detection is insufficient. , Poor cohesion, coupled with complex operations and many human factors, lead to large deviations in the evaluation results of catalyst performance, so the efficie...

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Problems solved by technology

[0005] Usually the fixed bed reaction device is the first choice to evaluate the catalyst of gas-solid phase reaction, especially the catalyst of alkane dehydrogenation reaction. Generally, the fixed bed reaction device evaluates the catalyst of alkane dehydrogenation, especially the catalyst of propane dehydrogenation to propylene has the following defects: the catalytic reaction cannot Continuous, the catalyst reusability test requires frequent cooling, heating and dismantling of the reaction tube; the propane dehydrogenation reaction is special, and the general stainless steel reaction tube will participate in the reaction and affect the reaction result. It is blocked by carbon or coking, which affects the efficiency and results of the experiment. It is necessary to provide a performance evaluation device and evaluation method for catalysts used in propane dehydrogenation to propylene

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