Thermogravimetric analysis device and method for high-humidity multi-component atmosphere reaction kinetics research

Abstract

The invention discloses a thermogravimetric analysis device and method for high-humidity multi-component atmosphere reaction kinetics research, and belongs to the technical field of thermogravimetric analysis instruments.The device comprises a reaction module, a heating furnace, a weighing module, a gas distribution module and an analysis module; the reaction module is vertically arranged in the heating furnace, the core is a reaction pipe main body with an open lower part, and the side surface is connected with a gas inlet pipe and a sampling pipe from top to bottom; the weighing module is located below the reaction module and comprises a weighing balance, a water cooling unit and a weighing supporting rod, and the water cooling unit can control a water vapor condensation area and stabilize the temperature of the balance; the gas distribution module can provide a multi-component reaction atmosphere containing water vapor with controllable concentration; the analysis module can detect tail gas components in real time. The device can realize low gas-solid mass transfer resistance, high-humidity environment stable control, wide-particle-size sample measurement and rapid heating and cooling, and is suitable for high-humidity multi-component atmosphere gas-solid reaction kinetic research in the fields of combustion, catalysis, adsorption and the like.

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