从萘系高效减水剂中分离硫酸钠的清洁工艺  

Cleaner Process for Separation of Na_2SO_4 from Naphthalene Series-Based Water-Reducing Agent

作　　者：何建波[1] 邓传芸[2] 张鑫[2] 

机构地区：[1]合肥工业大学化工学院,安徽合肥230009 [2]安徽农业大学化学系,安徽合肥230036

出　　处：《化工环保》2000年第4期48-50,共3页Environmental Protection of Chemical Industry

摘　　要：对萘系高效减水剂中硫酸钠的分离提出了一种用有机醇作为促析剂的清洁分离工艺 ,在较高温度和较高的水剂总浓度下 ,按水剂质量的 30 %加入促析剂 ,可使粉剂中硫酸钠的质量分数降至 3%以下 ,促析剂可回收利用。该工艺无三废排放 ,工艺简单 ,可望取代传统的脱硫酸钙法。A cleaner process is proposed to separate Na 2SO 4 from naphthalene series based water reducing agent by using alcohol as salting up promoter.The mass concentration of Na 2SO 4 in the powder product can decrease to less than 3% by adding the promoter into the aqueous product in the mass ratio of 30∶100 under the conditions of higher temperature and higher concentration of the aqueous product.The promoter can be recycled.The process is simple and without discharge of any waste.It is expected that the process will replace the conventional CaSO 4 removing process.

关 键 词：萘系减水剂 硫酸钠 清洁工艺 分离 混凝土 

分 类 号：X383[环境科学与工程—环境工程] TU528.042[建筑科学—建筑技术科学]