A composite reactor with wetted-wall column for mineral carbonation study in three-phase systems

This report presents a composite reactor that combines a modified conventional wetted-wall column, a pH control module, and an attachment to monitorprecipitationreactions. Our test and calibration experiments show that the absorption column behaved largely in agreement with theoretical predictions and previous observations. Experimental confirmation of CO2 absorption in NaOH and ethanolamine supported the effectiveness of the column forgas-liquid interaction. A test run in the CO2–NH3–MgCl2 system carried out for real time investigation of the relevant carbonationreactions shows that the reactor ’s performance closely followed the expectedreaction path reflected in pH change, the occurrence ofprecipitation, and the rate of NH3 addition, indicating the appropriateness of the composite device in studying triple-phase carbonation process.

Source: Review of Scientific Instruments - November 17, 2016 Category: Physics Authors: Chen Zhu, Xizhi Yao, Liang Zhao and H. Henry Teng Source Type: research