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Supersonic nozzle

A supersonic, nozzle technology, applied in the field of fluid mechanics and solid-phase chemical reaction, can solve the problems of low kinetic energy of material particles, difficult feeding, low collision reaction efficiency, etc., and achieve the effect of uniform flow field, high kinetic energy and excellent technical effect.

Inactive Publication Date: 2017-05-24
INST OF HIGH SPEED AERODYNAMICS OF CHINA AERODYNAMICS RES & DEV CENT
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Problems solved by technology

[0004] The main purpose of the present invention is to design a nozzle reactor for supersonic airflow to accelerate low-heat solid-phase reaction, to solve the problems of difficulty in feeding, low kinetic energy of material particles and low efficiency of collision reaction encountered in traditional jet mills

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Embodiment Construction

[0025]The supersonic nozzle, along the flow direction of the airflow, the annular shrinking and expanding nozzle 3 is sequentially connected with the first section 8 of the accelerating tube and the second section 10 of the accelerating tube, and forms a through inner cavity. An ejected feeding pipe 5 is provided throughout, the inlet end of the ejected feeding pipe 5 is connected to solid particles or powder and the normal ballast air flow, the outlet end extends to the first section 8 of the accelerating tube, and the inner space of the shrinking and expanding nozzle 3 is Divided into the inner flow channel of the injection feeding tube 2 and the annular contraction and expansion flow channel; a cylindrical target head 12 is arranged at the end of the second section 10 of the acceleration tube. The annular shrinking and expanding nozzle 3 is integrally formed, including a shrinking section and an expanding section. The transitional joint of the two sections is a throat 4, and...

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Abstract

The invention relates to a supersonic nozzle which consists of a ring-shaped shrinking-expanding nozzle, an injected charging pipe, an accelerating pipe and a target head, wherein supersonic gas flow of the ring-shaped shrinking-expanding nozzle is used for injecting and accelerating low-speed gas flow of a central charging circular pipe to an supersonic state, so that material particles obtain enough dynamic energy along with the gas flow, and can be gathered at the gas flow center to crash the fixed target head at the downstream in a focused mode, and therefore, the problems such as difficult charging, low material particle dynamic energy and low collision reaction efficiency in high-speed gas flow solid-phase reaction are solved.

Description

technical field [0001] This patent relates to the fields of fluid mechanics and solid-phase chemical reactions, and specifically relates to supersonic nozzles for supersonic airflow acceleration and low heat-solid phase applications. Background technique [0002] Solid-phase chemical reaction is an important chemical synthesis method and one of the means for people to develop new solid-phase materials. It has the characteristics of high selectivity, high yield, and simple process engineering. Its preparation process mainly includes high-temperature calcination and mechanical grinding methods. These methods all increase the energy of reactants to ensure the occurrence of solid-phase reaction. Supersonic gas flow accelerated low-heat solid-phase reaction method is a new technology that organically combines supersonic fluid technology and low-heat solid-phase chemical synthesis technology. It can greatly increase the energy feeding density. It is an important green synthesis te...

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Application Information

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IPC IPC(8): B01J19/26
CPCB01J19/26
Inventor 路波张兆熊能吴军强林俊陶洋林学东吴勇航郭秋亭范长海左金叶坤杜宁周洪杨可
Owner INST OF HIGH SPEED AERODYNAMICS OF CHINA AERODYNAMICS RES & DEV CENT
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