Development of high and low temperature experimental testing equipment
In order to study the adsorption and separation characteristics of certain adsorption materials at different tempera-tures,a set of high and low temperature experimental testing equipment was developed.The device used a one-stage G-M re-frigerator as the cold source and high purity helium gas as the heat transfer medium,a thermal switch structure was designed to reduce heat transfer to the cold head during high temperature loading,which could achieve a temperature of 30 to 673 K in a sin-gle sample chamber.Adsorption performance testing and activation regeneration treatment can be completed in this device,bring-ing convenience to continuous experiments.Specific temperature point control and temperature cycling tests were conducted on the spiral sample tube,the temperature control accuracy in the entire temperature range was better than±0.5 K,with a controllable heating rate of 1 to 10 K/min.It can meet the requirements of adsorption performance testing and activation regeneration treatment of adsorption materials.
RefrigeratorHigh and low temperatureVacuumAdsorption material
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