Under atmosphe（）e press（）ne, rates of deseption of CO（） from unmod（）ed carbonated potash solutior （27 wt%）and modified carbonated potash solution（27 wt%） containing DETA as a catalyst, have been measured in a laboratory stirred reactor. Experiments were carried out with concentrations of DETA from 0—40g/L and temperatures from 90—104℃The results, show that the desorption of CO2 from hot carbonated solutions with and without the addition of DETA, may be considered a pseudo-first order reversible reaction, and that the desorption of CO2 from carbonated potash solution calalysed by DEIA is in agreement with the mechanism of simultancous reactions of CO2 with amine molecules and with hydroxyl ions in solution. Mathematical models for desorptions rate cocflicient have been cstablished, and optimum concentration of DETA is proposed.
展开▼
