褐煤气化煤气废水预处理装置的改进  

Improvement of the Lignite Coal-gasification Wastewater Pretreatment Unit

作　　者：耿庆文[1] 袁亚民 盖恒军[3] 

机构地区：[1]云南煤化工集团有限公司,云南昆明650231 [2]云南解化化工分公司,云南红河661600 [3]青岛科技大学,山东青岛266042

出　　处：《煤化工》2012年第4期53-55,共3页Coal Chemical Industry

摘　　要：针对煤气化废水预处理脱酸脱氨段存在的处理能力不足、效率低下等问题,提出了改进的方案。通过提高塔设计压力和优化工艺流程,出水中残留的NH3质量浓度保持在200 mg/L以下,残留的H2S质量浓度低于50 mg/L,完全满足了生化段的工艺要求,大大提高了生化段的实际处理能力。改造后,年副产液氨1.8万t左右,经济效益可观。The bottleneck of the coal gasification wastewater pretreatment process was analyzed, and an improved process for sour gas and ammonia stripping was proposed to evaluate the performance of ammonia and sour gas removal. With the developed design, the residual concentration of ammonia, CO2, and H2S were reduced to less than 200 mg/L, 200 mg/L and 50 rag/L, respectively. This made biochemical treatment easier. From the debottlenecked units, 18 000 tons of liquid ammonia was produced as byproduct, and considerable economic benefits were gained. Successful experience can be shared from the improvement of the pretreatment process by many factories with similar units, which pave a sound way for wider application of the gasification technology.

关 键 词：煤气化废水 预处理装置 脱酸 脱氨 

分 类 号：X784[环境科学与工程—环境工程]