大型水煤浆气化高氨氮灰水预处理技术探讨  

Discussion of pretreatment technology for high ammoniacal nitrogen ash water generated by large scale coal slurry gasification

作　　者：冯亮杰 FENG Liang-jie(Sinopec Ningbo Engineering Co.,Ltd.,Ningbo 315103,China)

机构地区：[1]中石化宁波工程有限公司,浙江宁波315103

出　　处：《现代化工》2021年第3期218-221,共4页Modern Chemical Industry

摘　　要：介绍了采用碱液絮凝沉淀降低硬度、汽提回收氨水循环利用、分级回收灰水余热的预处理工艺路线;同时对装置实际运行情况进行分析改造和工艺优化,达到装置长周期稳定运行目的。A pretreatment process,which includes reducing hardness by flocculation and sedimentation with alkali solution,recycling ammonia water by stripping,and recovering spent heat by stages from ash water,is introduced.Actual operation situation for the unit is analyzed and optimized in order to achieve a long-term steady operation.

关 键 词：高氨氮灰水 酸洗 塔盘 余热回收 汽提 

分 类 号：TQ54[化学工程—煤化学工程]