Microwave heating device and application thereof

Abstract

The invention provides a microwave heating device and an application thereof, wherein the device comprises a microwave reactor and a microwave generation and transmission device, the microwave generation and transmission device comprises a microwave source, a circulator, a water load, a directional coupler, an automatic tri-dowel regulator and a waveguide according to a microwave transmission sequence, in the waveguide section, a mode of converting a rectangular wave guide into coaxial transmission is adopted, and a probe enters the center of the reactor from the side wall of the microwave reactor for guiding the microwave into the reactor. According to the device, microwaves in the reactor are uniformly distributed; and moreover, the device has good sealing performance, can be practically applied for any reaction which utilizes microwave to heat, such as an application of continuous oil product hydrodesulfurization, technological conditions can be alleviated, the oil product desulfurization degree is effectively improved, and the oil refining economical efficiency is improved.

Description

technical field [0001] The invention relates to a microwave heating device and its application, in particular to a chemical reaction device using microwave heating and the application of the device. Background technique [0002] Microwave has obvious characteristics such as short wavelength (1m~1mm), high frequency (300MHz~300GHz), and quantum characteristics. The basic principles of microwave heating are the conduction of charged particles and the polarization of dielectrics. The ion conduction mechanism means that the ions in the medium generate migration current in the electromagnetic field to generate heat. The dielectric polarization mechanism refers to that under the action of an electromagnetic field, polar molecules change from a random distribution state to a polar alignment according to the electromagnetic field. Under the action of microwave high-frequency electromagnetic field, these orientation movements are constantly changing according to the frequency of al...

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Problems solved by technology

However, this technology has the following problems: it is recorded that crude oil and catalyst are mixed by stirring, but in fact it is difficult to mix oil, gas and catalyst evenly in the cavity, and this mixing is difficult in the actual operation process. It is also easy to block the pipeline; in this method, after the hydrodesulfurization reaction is completed, the catalyst and the crude oil need to be separated, and the operation is cumbersome through gravity sedimentation or filtration; in addition, the microwave device is a batch reactor, and the supply body has many limit

Among them, the purpose of avoiding the leakage of combustible gas is achieved by opening holes on the safety isolator (in fact, the leaked gas is emitted through these holes), however, how to prevent hydrogen or combustible fuel gas from entering, this document does not make clear instructions , and the leakage of hydrogen is absolutely prohibited for the oil hydrogenation reaction, and there are potential safety hazards

[0010] In summary, the microwave heating devices reported in the above prior art are difficult to apply to large-scale industrial production, let alone realize chemical reaction processes that require continuous input and output of reactants into microwave heating chambers

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