填料塔中碳酸钾/哌嗪混合吸收液脱除CO2的体积传质系数

The process of removing dilute CO2 from air by using me mixtures of K2CO3 and piperazine (PZ) was conducted in a random packed tower at 25℃. The results showed that PZ increased the absorption rate of CO2 into aqueous K2 CO3 much more effectively than MEA or DEA. The volumetric overall mass transfer coefficient (KGa) of dilute CO2 absorption into K2CO3/PZ was measured. The KGa value was evaluated over the ranges of main operating variables: the concentration of CO2 in inlet gas, gas flow rate, liquid loading, CO2 loading in liquid phase, and the concentrations of K2CO3 and PZ. The test showed that KGa could be remarkably improved by increasing liquid loading and the concentration of PZ, and decreasing the concentration of CO2 in inlet gas, as well as the gas flow rate and CO2 loading in liquid phase.

Volumetric mass transfer coefficients of dilute CO2 absorption into mixtures of potassium carbonate and piperazine in packed column

The process of removing dilute CO₂ from air by using the mixtures of K₂CO₃ and piperazine (PZ) was conducted in a random packed tower at 25 ℃.The results showed that PZ increased the absorption rate of CO₂ into aqueous K₂CO₃ much more effectively than MEA or DEA. The volumetric overall mass transfer coefficient (K_Ga) of dilute CO₂ absorption into K₂CO₃/PZ was measured.The K_Ga value was evaluated over the ranges of main operating variables: the concentration of CO₂ in inlet gas, gas flow rate, liquid loading, CO₂ loading in liquid phase,and the concentrations of K₂CO₃ and PZ. The test showed that K_Ga could be remarkably improved by increasing liquid loading and the concentration of PZ, and decreasing the concentration of CO₂ in inlet gas, as well as the gas flow rate and CO₂ loading in liquid phase.