Regeneration method of inactivated propane dehydrogenation catalyst

A dehydrogenation catalyst, 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 and other problems, to achieve recovery Catalyst performance, sintering mitigation, agglomeration reduction effects
CN112536064AActive Publication Date: 2021-03-23CHINA PETROLEUM & CHEM CORP +1
11 Cites 2 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CHINA PETROLEUM & CHEM CORP
Publication Date
2021-03-23

Smart Images

  • Figure 1
    Figure 1
Patent Text Reader

Abstract

The invention relates to the field of catalysts, and particularly provides a regeneration method of a deactivated propane dehydrogenation catalyst, which comprises the following steps of: (a) coolinga deactivated dehydrogenation catalyst subjected to propane dehydrogenation reaction to 300-500 DEG C in an inert gas atmosphere, and carrying out regeneration treatment in a weak oxidizing gas atmosphere at the temperature; (b) continuing to cool to 200-300 DEG C in an inert gas atmosphere, and carrying out regeneration treatment in a mixed gas atmosphere containing at least two of oxygen, watervapor and inert gas at the temperature; and (c) after the step (b) is finished, replacing the mixed gas with inert gas until the temperature is reduced to 50-100 DEG C in an inert atmosphere, and carrying out regeneration treatment at the temperature in the presence of organic matters; wherein the dehydrogenation catalyst is a catalyst containing noble metal. The method can effectively recover theperformance of the catalyst and improve the utilization rate of the catalyst.
Need to check novelty before this filing date? Find Prior Art

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. Conventional ethylene co-production light oil (naphtha, light oil) cracking method has been difficult to meet its growing needs. With the development of coal chemical technology and special propylene production technology, the sources of propylene are diversifying. Dehydrogenation of propylene from abundant propane feedstock 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 only be obtained under low pressure and high temperature conditions, while excessively high reaction temperature will intensify propane cracking reaction and deep dehydrogena...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More