摘要
介绍了在采用流化床焚烧炉处理含硝酸的己二酸废水和含氢氧化钠的己二胺废水的过程中遇到的问题及其解决措施。通过控制二次风以下区段为还原气氛，使己二胺废水中的有机胺转化为ＮＨｉ，然后它与由硝酸分解产生的ＮＯｘ反应生成Ｎ２，可减少ＮＯｘ排放量。通过控制密相区燃烧温度或添加高岭土使之与碱金属钠盐形成高熔点物质，可避免密相区结焦。稀相区、燃烬室及余热锅炉受热面粘结熔化盐的问题，可采取辅助措施加以解决。同时，还介绍了流化床焚烧炉床料的选择及炉内各区段的适宜温度。
The problems encountered in the incineration of adipic acid and hexamethylenediamine waste liquor containing HNO 3 and NaOH respectively in fluidized bed incinerator are described and their corresponding countermeasures are put forward.By controlling the area under secondary air to be a reduction zone,the organic amine in the waste liquor turns into NHi,which further reacts with NOx decomposed from HNO 3 to form N 2,leading to the reduction of NO x emission.By controlling combustion temperature or adding kaolin clay to make alkali metal salts into high melting substances,coking can be avoided in dense phase zone.The auxiliary measures are introduced to solve the fouling problem of dilute phase zone,after burner and waste heat boiler.The choice of bed material and the control of combustion temperature in different zones are described.
出处
《化工环保》
CAS
CSCD
北大核心
1997年第5期259-263,共5页
Environmental Protection of Chemical Industry
关键词
流化床
焚烧处理
己二酸
废水
己二胺
废水处理
fluidized bed,incineration,adipic acid waste liquor,hexamethylenediamine waste liquor.
