On-line gas-solid kinetic testing method and device

Abstract

The invention discloses an online gas-solid dynamics testing method and device. The device includes a mass gas mixing system and more than one gas cylinder connected to the mass gas mixing system. The mass gas mixing system communicates with an air intake valve The preheating vacuum furnace is connected. The preheating vacuum furnace is connected to the reaction vacuum furnace through the insulation pipe and the controllable solenoid valve. The reaction vacuum furnace is connected to the vacuum system through the controllable exhaust valve. There are pressure sensors and temperature sensors in the reaction vacuum furnace. , the controllable solenoid valve, controllable exhaust valve, pressure sensor and temperature sensor are all connected with the control system. The present invention can accurately and efficiently measure the kinetic test results such as the relationship curve between reaction amount and time, the relationship curve between reaction fraction and time, and the relationship between reaction amount and time per unit area in the gas-solid reaction process, providing a theory for industrial production and scientific experiments guide.

Description

technical field [0001] The invention relates to an online gas-solid dynamics testing method and device, belonging to the technical field of gas-solid reaction kinetics. Background technique [0002] Gas-solid reaction is universal and important in engineering fields such as metallurgy, materials, chemical industry and energy. However, for most gas-solid reaction processes, it is difficult to monitor and record kinetic data online, so that we lack understanding of the mechanism of many reaction processes. The following are the methods used by some researchers in the gas-solid reaction kinetics test and research: Yin Shiyou and others studied the nitrogen dissolution behavior of austenitic stainless steel melts. By setting the experimental temperature as: 1550 ° C, during the experiment Take samples for 2, 5, 10, 15, 20, 25, 40, and 45 minutes respectively, and use a balance to weigh the change in nitrogen content during the nitriding process of stainless steel, so as to dete...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problems of inaccurate experimental data, low efficiency, and incapable of real-time monitoring in the traditional dynamic testing method, the invention proposes an instant online, simple and effective online gas-solid dynamic testing method and device, which can accurately and efficiently measure Kinetic test results such as the relationship between reaction volume and time, reaction fraction and time, and reaction volume per unit area and time during the gas-solid reaction process provide theoretical guidance for industrial production and scientific experiments

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