Thermal gravimetrical reactor applied to bulk specimen testing

Abstract

The invention discloses a thermal gravimetrical reactor applied to bulk specimen testing, belonging to testing equipment for performing thermo gravimetric analysis on specimens and aiming to solve the problems that small-mass and small-sized specimens are required and a sample vessel is unbeneficial to gas-solid reactions in the conventional thermo gravimetric analyzer. Through a high-temperature reactor, reaction gas is preheated fully, so that mass measuring errors caused by temperature change of the reaction atmosphere are avoided; two types of hanging baskets are specific to different specimens respectively, so that the diffusion resistance during the reactions of bulk specimens is reduced effectively, and complete reactions and measuring accuracy are ensured; the height of an electric heating furnace is adjusted through a hydraulic lifting platform, so that samples can be heated at constant temperature under a high-accuracy condition. The thermal gravimetrical reactor can be used for dynamically measuring the mass changes of bulk specimens at various heating rates or under a constant-temperature condition, and is more consistent with the requirements of scientific research production than the conventional thermal gravimetrical analyzer.

Description

technical field [0001] The invention belongs to testing equipment for thermogravimetric analysis of samples, in particular to a thermogravimetric reactor for testing large samples, which can test the mass of large mass samples or large particle samples under programmed temperature rise or constant temperature heating conditions Variety. Background technique [0002] Thermogravimetric analysis is to make the sample under the preset heating conditions, and analyze the relationship between the mass of the sample and the change of temperature or time under the set reaction atmosphere. It is widely used in the study of the composition, thermal stability, oxidation and reduction, and adsorption of samples. and desorption, reaction kinetics, and the effects of additives and catalysts, etc. The existing thermogravimetric analyzer is generally composed of a balance, an electric furnace, a program temperature control system, a recording system and other components, and measures the m...

AI Technical Summary

Problems solved by technology

[0004] The invention provides a thermogravimetric reactor for large sample testing, aiming at overcoming the problems that existing thermogravimetric analyzers require sample quality and volume to be small, and sample vessels are not conducive to gas-solid reaction, so as to be able to dynamically measure large mass The mass-temperature change relationship of the sample or large particle sample in the process of heating up in different atmospheres or the mass-time change relationship under constant temperature conditions

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