Catalyst regeneration device based on microwave decoking and method

Abstract

The invention belongs to the technical field of discarded metal catalyst regeneration and discloses a catalyst regeneration device based on microwave decoking. The device comprises a microwave source, a circulator, an electric tuner, a rectangular waveguide short-circuit piston and a quartz reaction chamber which are connected with each other in turn; a resonant cavity is formed in the rectangular waveguide; the quartz reaction chamber is located in the resonant cavity and is used for accommodating the inactivated noble metal catalyst and ventilating; the microwave emitted from the microwave source passes by the circulator and the electric tuner and then is reflected by the short-circuit piston and is oscillated in the resonant cavity so as to form a local strong electric field; the coke attached to the noble metal catalyst is heated and oxidized into gas under microwave effect or falls off under the air disturbance, so that the noble metal catalyst can recover activity. The invention also relates to a catalyst regeneration method based on microwave decoking. According to the invention, the use ratio and regeneration efficiency of the catalyst are increased, the energy is saved and the operation is simpler.

Description

technical field [0001] The invention belongs to the related technical field of waste metal catalyst regeneration, and more specifically relates to a catalyst regeneration device and method based on microwave decoking. Background technique [0002] In the petroleum refining industry, crude oil undergoes chemical processing such as fractionation, extraction, and refining to produce commonly used petroleum products such as gasoline and diesel. In order to improve processing efficiency, a large number of noble metal catalysts, such as platinum, rhodium, palladium, ruthenium-based catalysts, etc. are often used in industry to complete the catalytic reaction. The diameter of these catalyst particles is generally between 1 mm and 2 mm, and they are attached to the surface of porous media as a coating to increase the reaction area. In petroleum processing, chemical products such as gasoline and diesel are produced mainly through the fragmentation of long-chain hydrocarbons and cond...

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Problems solved by technology

This method is not only complicated and difficult to control, but also under heating and high pressure environment, the internal structure of porous media noble metal catalysts will undergo irreversible changes, so it is not suitable for the regeneration of porous media noble metal catalysts deactivated by coking

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