A combination process of mineral carbonation with S02 disposal for simulated flue gas by magnesia-added seawater  

作　　者：Yingying Zhao Mengfan Wu Zhiyong Ji Yuanyuan Wang Jiale Li Jianlu Liu Junsheng Yuan 

机构地区：[1]School of Chemical Engineering and Technology,Hebei University of Technology,Tianjin 300130,China [2]Hebei Collaborative Innovation Center of Modem Marine Chemical Technology,Tianjin 300130,China [3]Quanzhou Normal University,Fujian 362000,China [4]Shandong Haihua Group Co.,Ltd.,Shandong 262737,China

出　　处：《Frontiers of Chemical Science and Engineering》2019年第4期832-844,共13页化学科学与工程前沿（英文版）

基　　金：The work is supported by Science and technology project of Hebei Province(No.17273101D);Chinese Postdoctoral Science foundation(No.20I7M611142);National Key Research and Development Program(No.2016YFB0600500);the National Natural Science Foundation of China(Grant No.21306037);Program for Chan&jiang Scholars and Innovative Research Team in University(No.IRT14R14).

摘　　要：The desulfurization by seawater and mineral carbonation have been paid more and more attention.In this study,the feasibility of magnesia and seawater for the integrated disposal of S02 and C02 in the simulated flue gas was investigated.The process was conducted by adding MgO in seawater to reinforce the absorption of S02 and facilitate the mineralization of C02 by calcium ions.The influences of various factors,including digestion time of magnesia,reaction temperature,and salinity were also investigated.The results show that the reaction temperature can effectively improve the carbonation reaction.After combing S02 removal process with mineral carbonation,Ca^2+removal rate has a certain degree of decrease.The best carbonation condition is to use 1.5 times artificial seawater(the concentrations of reagents are 1.5 times of seawater)at 80℃and without digestion of magnesia.The desulfurization rate is close to 100%under any condition investigated,indicating that the seawater has a sufficient desulfurization capacity with adding magnesia.This work has demonstrated that a combination of the absorption of S02 with the absorption and mineralization of C02 is feasible.

关 键 词：mineral carbonation wet S02 disposal seawater.desulfurization 

分 类 号：P73[天文地球—海洋科学]