A gravimetric method and device for measuring the properties of gas adsorbent materials

Abstract

The invention discloses a method and device for measuring performances of a gas adsorbent material with a gravimetric method. The device comprises an adsorption gas generation unit and an inlet / outlet pipeline connected with the adsorption gas generation unit, wherein a pipeline circuit is arranged on the inlet / outlet pipeline of the adsorption gas generation unit; the pipeline circuit is provided with a weight measurement unit; and the inlet / outlet pipeline of the weight measurement unit is further provided with a pipeline circuit. The method comprises the following steps: when the adsorption gas enters the adsorption gas generation unit, switching on a valve and measuring gas temperature and concentration of the inlet / outlet pipeline; a crank connecting rod mechanism in the weight measurement unit is used for expanding the inlet / outlet pipeline and a fixing piece of an inlet / outlet pipeline connection plate; a suspension type micro balance is used for continuously measuring the weight of an adsorption material filling part; and the measurement is circulated. The adsorption or desorption performance of the adsorbent material is directly measured by using the gravimetric method. The adsorption or desorption performance of the adsorption material can be accurately and directly measured by adopting weight measurement in a certain period of time.

Description

technical field [0001] The invention relates to the field of performance testing of adsorbent materials, in particular to a method and device for measuring the performance of gas adsorbent materials by gravimetric method. Background technique [0002] The performance of adsorption materials, such as isotherm adsorption line, adsorption performance, desorption performance, adsorption and desorption temperature, etc. are important parameters of adsorption materials. Traditional adsorption materials or newly developed adsorption materials need to accurately test their relevant parameters before they can be promoted. application. [0003] The traditional measurement method adopts indirect measurement methods, such as arranging temperature, concentration, pressure, wind speed and other sensors at the front and rear ends of the adsorption material, and then using mathematical formulas to calculate and deduce the performance of the adsorption material. Although this method is simpl...

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Problems solved by technology

[0003] The traditional measurement method adopts indirect measurement methods, such as arranging temperature, concentration, pressure, wind speed and other sensors at the front and rear ends of the adsorption material, and then using mathematical formulas to calculate and deduce the performance of the adsorption material. Although this method is simple, due to the adsorption There is uncertainty in the formula itself of the adsorption performance of the agent material to the gas, which leads to the uncertainty and error in the indirectly deduced adsorption material performance.

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