Venturi microbubble generator and application of generator in catalytic ozonation

Abstract

The invention belongs to a microbubble generation device and particularly relates to a Venturi microbubble generator and application of the generator in catalytic ozonation. The Venturi microbubble generator comprises a main pipe, wherein an inlet and an outlet are formed in two ends of the main pipe, the inlet of the main pipe is connected with an output end of a gas-liquid mixing pump through afirst Venturi tube, the outlet of the main pipe outputs through a second Venturi tube, and the first Venturi tube and the second Venturi tube comprise inlet sections, shrinking sections, throat sections and dispersion sections which are sequentially connected from outside to inside; and spiral blades homodromous with the advancing direction of materials are fixed in the main pipe, openings are formed in the spiral blades, the hole diameters of the opening decrease from inside to outside along the radial direction, and the openings in the same circumference are distributed in an equal angle interval manner. The Venturi microbubble generator can solve the technical problem of poor generation effects of microbubbles in the prior art effectively; and the Venturi microbubble generator has the advantages that the mounting is convenient, the generation and utilization effects of the microbubbles are good, and the like.

Description

technical field [0001] The invention belongs to a microbubble generating device, in particular to a Venturi microbubble generator and its application in ozone catalytic oxidation. Background technique [0002] Fine bubbles have the advantages of large specific surface area, long residence time, high interfacial zeta potential, self-pressurized dissolution, generation of free radicals, and enhanced mass transfer efficiency. At present, microbubble technology has been widely used in chemical industry, water treatment, medicine, flotation, oil exploration and metallurgical industry and other industries. [0003] The mechanism of microbubble generation includes dispersed air method, dissolved air outgassing method, ultrasonic cavitation method, electrolysis method, chemical method, etc. Ultrasonic cavitation method, electrolysis method, and chemical method generate bubbles with higher accuracy, but generate fewer bubbles, and the generation cost is higher. Dispersed air method...

AI Technical Summary

Problems solved by technology

The mixing unit is fixed with 10-100 helical blades distributed at equal intervals, which is difficult to manufacture and process, so it is difficult to realize large-scale industrialization

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