Regeneration method of catalyst for synthesizing isopropylbenzene

Abstract

The invention relates to a regeneration method of a catalyst for synthesizing inactivated isopropylbenzene, aiming at solving the problems that the regeneration process of the existing catalyst for synthesizing isopropylbenzene has high requirements for oxygen content, regeneration temperature, regeneration time control, and the activity of the catalyst can be seriously influenced by any carelessness. The dielectric barrier discharge technology is adopted to regenerate the inactivated catalyst, O2 used as working gas is ionized into high-activity low-temperature plasma particles such as O<2->, O<-> and O2<2-> in a discharging state, which can be reacted with surface carbon, toxics and the like of the catalyst, and then get away from the reactor in a gas state, therefore, the O2 has no adverse effect on the catalyst, the activity of the catalyst can be restored and even improved to some extent. According to the regeneration method, the process is simple and can be operated simply, in the regeneration process, little electrical energy is only consumed, the catalyst regeneration effect is good, the service life of the catalyst is prolonged, and thus, the method can be used for regenerating the catalyst for synthesizing isopropylbenzene.

Description

Technical field

[0001] The invention relates to a method for regenerating a deactivated catalyst for synthesizing cumene, and belongs to the technical field of catalysis. Background technique

[0002] Cumene is an important basic raw material for organic chemicals, mainly used to produce phenol and acetone with a wide range of uses. Currently, 90% of the world's phenol comes from the cumene production route, so the growth in demand for phenol and acetone has driven the growth in demand for cumene. Cumene and its phenol acetone industry, as one of the main development directions of Sinopec, have a broad domestic market. It is expected that in the next 10 years, due to the strong growth in demand for phenol, the domestic market demand for cumene will continue With rapid growth, the total scale of cumene production equipment is likely to increase from the current 800,000 tons / year to about 3 million tons / year, so about 50 to 100 tons / year of cumene catalyst is needed. [000...

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