新型有机胺溶液捕集CO_2的实验研究

EXPERIMENTAL STUDY OF TRAPPING CO_2 IN NEW ORGANIC AMINE SOLUTION

在温度333K、压力0.1MPa下,研究了溶质总量一定的位阻胺(CHA)溶液在不同浓度下CO2的吸收性能,考察了吸收过程中吸收速率、吸收量及吸收时间的相互关系,并将其与MEA溶液的吸收性能进行了对比。控制解吸温度为373K,考察了两种吸收液的CO2解吸量和解吸时间的关系。对两种吸收富液进行腐蚀实验。实验表明,CHA较适用于捕集低分压下的CO2;适当降低有机胺吸收液的浓度有利于充分发挥其对CO2的吸收性能;单位物质的量的CHA对CO2的吸收量高于在相同条件下的MEA对CO2的吸收量。CHA的腐蚀率明显低于MEA的腐蚀率。从循环利用和降低能耗的角度出发,CHA具有较高的研究价值和广泛应用前景。

A study of carbon dioxide （CO2） absorption performance has been carried out in different concentration of a resistance amine compound （CHA） solution under a certain weighted CHA. The absorption process .estimated the interrelation absorption rate, absorption capacity and absorption time and compared the absorption performance of MEA and CHA solution .The absorption temperature is controlled at 333K. The desorption temperature is controlled at 373K and this process estimated the interrelation of desorption capacity and desorption time. Carrying on the corrosion experiment to two rich liquid. This experiment indicates that CHA is suitable for trapping CO2 under low pressure; Reducing the content of Amine properly, can help the solution make the most of its absorption function ; In the same conditions, the absorption capacity of unit amount of substance CHA is more than that of MEA. CHA corrosion rate significantly below the rate of corrosion of MEA From the perspective of recycling and reduce energy consumption, CHA has high research value and broad application prospect.