沉淀剂对液态烃碱渣中硫化物的去除特性  

Removal characteristics of sulfide from liquid hydrocarbon alkali residue by precipitators

作　　者：朱立新 韩文丽 孙体昌[1,2] 陆鹏宇 李永峰[4] 邓宗义 ZHU Lixin;HAN Wenli;SUN Tichang;LU Pengyu;LI Yongfeng;DENG Zongyi(School of Civil and Resource Engineering,University of Science and Technology Beijing,Beijing 100083,China;Nanjing Academy of Resources and Ecology Sciences,Nanjing 210047,China;Sinopec Jinling Petrochemical Company,Nanjing 210033,China;Dafenggang Economic Development Zone Branch,YanchengDafeng Ecological Environment Bureau,Yancheng 224145,China)

机构地区：[1]北京科技大学土木与资源工程学院,北京100083 [2]南京资源生态科学研究院,江苏南京210047 [3]中国石化金陵石化公司,江苏南京210033 [4]盐城市大丰生态环境局大丰港经济开发区分局,江苏盐城224145

出　　处：《化工环保》2023年第4期464-469,共6页Environmental Protection of Chemical Industry

基　　金：南京扬子江生态文明创新中心“扬子江菁英计划”项目(2020)。

摘　　要：为探究化学沉淀法对液态烃碱渣中硫化物的去除特性,以ZnSO_(4)·7H_(2)O、FeSO_(4)·7H_(2)O、CuSO_(4)和CuO为沉淀剂,分别研究了沉淀剂种类、沉淀剂用量、搅拌时间及静置沉降时间对硫化物去除效果的影响。实验结果表明:当选择CuO为沉淀剂、CuO用量为12 g/L、搅拌时间为20 min、静置沉降时间为3 h时,硫化物去除率可达99.27%;CuO沉淀脱硫对有机物有一定的去除效果,COD去除率可达35.12%,且实际沉淀生成量高于理论沉淀生成量。沉淀相的XRD分析结果表明沉淀中的硫主要以CuS和Cu2S的形式存在,FTIR分析结果表明沉淀相中存在有机硫及其他有机物。To explore the removal characteristics of sulfide from liquid hydrocarbon alkali residue by chemical precipitation,ZnSO_(4)·7H_(2)O、FeSO_(4)·7H_(2)O,CuSO_(4) and CuO were selected as precipitating agents,and the effects of precipitant type,precipitant amount,stirring time and settling time on sulfide removal were investigated respectively.The experimental results show that:The removal rate of sulfide can reach 99.27%when CuO is selected as the precipitant,the CuO amount is 12 g/L,the stirring time is 20 min,and the settling time is 3 h;Some organic matter can be removed with CuO precipitation desulfurization,the COD removal rate can reach 35.12%,and the actual precipitation generation is higher than the theoretical value.The XRD analysis results of the precipitated phase show that the sulfur in the precipitation is mainly in the form of CuS and Cu2S,and the FTIR analysis results indicate the presence of organic sulfur and other organic compounds in the precipitated phase.

关 键 词：液态烃碱渣 化学沉淀法 CUO 硫化物 脱硫 

分 类 号：X742[环境科学与工程—环境工程]