A microwave biomass cracking device

Abstract

The invention discloses a microwave biomass cracking device, comprising a microwave heating cavity (1) and microwave feeding port devices (2) which are fixed on the top of the microwave heating cavity. The microwave feeding ports of the microwave feeding port devices (2) form 45-degree angles with a horizontal line and are asymmetrically arranged on the top of the microwave heating cavity (1) in an inclination manner. The invention heats the material inside the heating cavity through a high-molecular material plate through a microwave transmission system, adopts a big area antenna feeding port mode to perform heating on the material, and enables the field intensity and the uniformity of the material to be better than horn-shaped feeding port mode through the high-molecular material plate. The ventilation cooling device can fast cool the high-molecular material plate, enables the material product generated during the heating process not to be adhered on the surface of the high-molecular material, reduces the feeding port ignition condition, improves the material field strength intensity and uniformity, reduces the condition of the ignition of the attachment of the material on the feeding port, has a small standing-wave ratio and high microwave heating efficiency.

Description

technical field [0001] The invention relates to the technical field of microwave heating equipment, in particular to a microwave device for biomass cracking. Background technique [0002] Waveguide slot antennas generally include rectangular waveguide slot antennas, rectangular ridge waveguide slot antennas, circular waveguide slot antennas, elliptical waveguide slot antennas, and coaxial waveguide slot antennas. The difference in shape determines that they have their own performance and use. The microwave feeding method of biomass cracking in the prior art usually adopts the way of expanding the horn, through which the materials are fed in the form of expanding the horns, and the materials pass through the heating chamber intermittently, and finally the microwave heating effect realizes specific functions . [0003] However, although the microwave heating system (using microwaves to heat the material) through the existing microwave feeding port can realize the specific fu...

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Problems solved by technology

[0003] However, although the microwave heating system (using microwaves to heat the material) through the existing microwave feeding port can realize the specific function of heating, in the actual application process, due to structural limitations, the heating effect is not very good. Ideal; and during the heating process, due to the limitation of the expansion horn, the electric field distribution in the heating chamber is uneven, and the local temperature is too high.

At present, there is also the form of antenna feeder, but the layout of the feeder is mostly in the form of top feed, which affects the field strength and uniformity, and the by-products of the material during the heating process will be adsorbed on the surface of the feeder, making a part of the energy of the heating material Heating by-products, the utilization rate of microwave energy is not high

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