Fe-Co/LDHs催化剂的制备及催化氧化含硫废碱液  

Preparation of Fe-Co/LDHs Catalyst and Its Catalytic Oxidation of Sulfur-Containing Alkali Wastewater

作　　者：刘宝旗 金竹胜 徐灿 张歌珊 袁军 LIU Baoqi;JIN Zhusheng;XU Can;ZHANG Geshan;YUAN Jun(CNOOC Zhoushan Petrochemical Co.,Ltd.,Zhoushan,Zhejiang 316000,China;School of Chemistry and Environmental Engineering,Wuhan Institute of Technology,Wuhan,Hubei 430205,China)

机构地区：[1]中海石油舟山石化有限公司,浙江舟山316000 [2]武汉工程大学化学与环境工程学院,湖北武汉430205

出　　处：《浙江化工》2024年第2期35-41,共7页Zhejiang Chemical Industry

摘　　要：本文基于催化空气氧化模拟含硫废碱液和真实石化企业含硫废碱液,以水铝钙石为载体,利用浸渍法制备Fe-Co复合氧化物非均相负载型催化剂(Fe-Co/LDHs),并优化催化剂制备条件和反应条件。当催化剂中n(Fe):n(Co)=9:1(摩尔比)、总金属负载率为25%、焙烧温度为600℃时,制备的催化剂效果最好;处理6000 mg/L的模拟含硫废碱液时,每升添加10 g催化剂,在75℃下曝气量为2.5 L/min时效果最佳,3 h脱硫率可达到96.7%;而处理相同浓度的实际含硫废水时,3 h脱硫率可达92.4%,且循环使用10次后催化效果无明显下降。结果表明Fe-Co/LDHs催化剂的催化活性优异且稳定,具有较好的应用前景。In this work,Fe-Co composite oxide heterogeneous catalyst(Fe-Co/LDHs)loading on hydrocalumite was prepared using impregnation approach for the catalytic air oxidation of simulated sulfur-containing alkali wastewater and real wastewater from petrochemical enterprises.The preparation conditions of the catalyst and the reaction conditions were optimized.When n(Fe):n(Co)=9:1(molar ratio)in the catalyst,total metal loading percentage is 25%,and roasting temperature is 600℃,the catalyst shows the best catalytic activity.For the simulated sulfur-containing alkali wastewater with the initial sulfur concentration of 6000 mg/L,the reaction can reach desulfurization of 96.7%after 3 h with the catalyst dosage of 10 g/L,reaction temperature of 75℃,and aeration rate of 2.5 L/min,while the desulfurization can maintain 92.4%after 3 h for real sulfur-containing wastewater with the same concentration.Besides,the efficiency of the catalyst after 10 cycles shows no obvious decrease.The results show that the Fe-Co/LDHs catalyst has excellent and stable catalytic activity and have good application prospects.

关 键 词：Fe-Co复合氧化物 水铝钙石 浸渍法 催化空气氧化 含硫废碱液 

分 类 号：TQ426[化学工程]