A kind of regeneration method of deactivated propane dehydrogenation catalyst

A dehydrogenation catalyst and propane dehydrogenation technology, applied in the direction of catalyst regeneration/reactivation, catalyst, molecular sieve catalyst, etc., can solve the problems of Pt active component aggregation and growth, dehydrogenation performance decline, catalyst deactivation, etc., and achieve recovery Catalyst performance, sintering reduction, agglomeration reduction effects
CN112536064BActive Publication Date: 2022-07-12CHINA PETROLEUM & CHEM CORP +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CHINA PETROLEUM & CHEM CORP
Publication Date
2022-07-12

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Abstract

The invention relates to the field of catalysts, and specifically provides a method for regenerating a deactivated propane dehydrogenation catalyst, the method comprising: a) deactivating the dehydrogenation catalyst in a propane dehydrogenation reaction, first cooling it in an inert gas atmosphere to a temperature of 300 ℃ -500°C, at this temperature, perform regeneration treatment in a weakly oxidizing gas atmosphere; b) then continue to cool down to 200-300°C in an inert gas atmosphere, at this temperature, under the atmosphere containing oxygen, water vapor and inert gas Carry out regeneration treatment under a mixed gas atmosphere of at least two of them; c) after step b) finishes, replace the mixed gas with an inert gas to the inert atmosphere and drop the temperature to 50-100 ° C, at this temperature, in the presence of organic matter Carry out regeneration treatment; the dehydrogenation catalyst is a catalyst containing precious metals. The method of the invention can effectively restore the performance of the catalyst and improve the utilization rate of the catalyst.
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Description

technical field

[0001] The invention relates to a regeneration method of a deactivated propane dehydrogenation catalyst. Background technique

[0002] As an important basic organic chemical raw material, propylene is in great demand, and its annual consumption is greater than that of ethylene. It is difficult to meet the increasing demands of the conventional ethylene co-production light oil (naphtha, light diesel) cracking method. With the development of coal chemical technology and propylene production technology, there is a trend of diversification of propylene sources. The production of propylene by dehydrogenation of abundant propane raw materials has become one of the main production methods of propylene. Propane dehydrogenation reaction is a strong endothermic reaction, limited by thermodynamic equilibrium, ideal propylene yield can be obtained under low pressure and high temperature conditions, and excessively high reaction temperature aggravates the propane cracki...

Claims

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