In order to solve the problem that oily wastewater in methanol to olefin unit is difficult to treat,China Energy Baotou Coal Chemical Co.,Ltd.and Shanghai Lanke Environmental Technology Co.,Ltd.jointly develops a comprehensive treatment technology for oily wastewater in methanol to olefin plant.According to the characteristics of oily wastewater in each stream of the plant,the technology adopts fixed bed filtration technology and sequential oil removal technology to establish a 200 t·h-1 solids removal unit for quench water and a 50 t·h-1 oil-removal unit for oily wastewater.After the application of this technology,the suspended solids in the quench water is less than 50 mg·L-1,and the external discharge of the quench water is reduced by 91.5％;and the oil content in oily water drops to 2-5 mg·L-1,which can be used in gasification and coal milling to improve the comprehensive water use efficiency of methanol to olefin plant,save energy and reduce emission.
关键词
甲醇制烯烃/含油水净化/固定床过滤/序列式除油/悬浮物
Key words
methanol to olefin/oily wastewater treatment/fixed bed filtration/sequential oil removal/suspended solids
维普
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