乙醇脱水制乙烯水资源循环利用研究  

Study on recycling of waste water from ethanol dehydration to ethylene process

作　　者：何霖[1] 程牧曦 谭亚南[1] 韩伟[1] 艾珍[1] 潘相米[1] 吴砚会[1] 

机构地区：[1]西南化工研究设计院有限公司国家碳一化学工程技术研究中心工业排放气综合利用国家重点实验室,四川成都610225

出　　处：《能源化工》2015年第4期66-68,共3页Energy Chemical Industry

摘　　要：乙醇脱水制乙烯工艺废水蒸气中含有多种组分,其中催化剂粉末（w）≤0.2％、乙醇（w）≤1.5％、有机酸（w）≤0.5％、醇类（除乙醇）（w）≤0.8％、乙烯（w）≥48.5％;温度高达200℃.将废水蒸气冷却至105～110℃除去高浓度污泥后,将气相组分冷却至常温,再通过汽提除去易挥发组分,然后进行均质调节、机械过滤、IC厌氧反应器厌氧处理、生物滤池好氧曝气处理、PAM絮凝过滤后,作为中水循环利用.In the ethanol dehydration to ethylene process, the steam of waste water contains multiple components in which the mass fraction of pulverized catalyst less than O. 2%, ethanol less than 1.5%, organic acid less than 0. 5%, non-ethanol alcohol less than 0. 8% and ethylene higher than 67%. The temperature of the steam reaches up to 200 ℃. The waste water steam can be reused as recycled water by treatment. The treatment process includes some steps as follows ： cooling waste water steam to 105 - 110 ℃ and then removing bulk dirt contents, cooling gas phase to room temperature, and removing volatile components by steam stripping. A series of sequential treatment includes homogeneous adjusting, mechanical filtration, IC anaerobic treatment, aerobic treatment in bacteria filter, and PAM flocculation filtration.

关 键 词：乙醇 乙烯 水资源 循环利用 

分 类 号：TQ221.211[化学工程—有机化工]