Sodium combustion experimental device and method for obtaining sodium aerosol with extreme low concentration

Abstract

The invention belongs to the technical field of reactors, and particularly relates to a sodium combustion experimental device and a method for obtaining a sodium aerosol with extreme low concentration. The device includes a sodium combustion reactor and an igniter; the igniter is sodium combustion reactor ignition; the sodium combustion reactor is of a cylinder-shaped structure, a cylindrical groove is formed in the bottom of the cylinder, and a conical groove is formed in the bottom of the cylindrical groove; a heating device and a thermocouple are arranged at the bottom of the cylinder outside of the sodium combustion reactor; and a quartz window is formed above a cylinder body of the sodium combustion reactor. The method performs obtaining by using the device and comprises the steps that a, the experimental device is prepared according to the device; b, the heating device is turned on, and the experimental device in the step a is heated to 115 DEG C to 125 DEG C; c, the melting of metal sodium into liquid is observed through the quartz window, and the high-energy pulsed laser igniter is turned on; d, a sodium aerosol detector is used for sampling; and e, the sodium aerosol withthe predetermined concentration is collected. The sodium combustion experimental device and the method for obtaining the sodium aerosol with the extreme low concentration are provided.

Description

technical field [0001] The disclosure belongs to the technical field of reactors, and in particular relates to a small amount of sodium combustion experimental device and a method for obtaining extremely low concentration sodium aerosol. Background technique [0002] In the research of sodium aerosol detection technology, it is necessary to carry out the detector response experiment in the real sodium aerosol environment. Common ways to obtain sodium aerosol include sodium combustion, sodium water reaction, etc. According to previous experimental experience, to ignite metal sodium in an air atmosphere, it needs to be heated to above 200°C or even higher. The reaction of sodium in air is not easy to control. When the temperature is low, an oxide film will be formed on the surface of sodium to prevent further reaction. If you want to obtain the continuous burning state of sodium, you need to continuously stir the burning, which is difficult to operate, and the concentration o...

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Problems solved by technology

According to previous experimental experience, to ignite metal sodium in an air atmosphere, it needs to be heated to above 200°C or even higher. The reaction of sodium in air is not easy to control. When the temperature is low, an oxide film will be formed on the surface of sodium to prevent further reaction. If you want to obtain the continuous burning state of sodium, you need to continuously stir the burning, which is difficult to operate, and the concentration of sodium aerosol produced is very high, so it is not suitable for obtaining a small amount of relatively stable sodium aerosol, that is, it is not applicable Research on early trace sodium aerosol detection technology

Sodium water reacts extremely violently and is prone to explosion, posing a great safety hazard

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