化学工程2024，Vol.52Issue(8)：66-70,77,6.DOI:10.3969/j.issn.1005-9954.2024.08.012
低温多效蒸馏海水淡化无磷阻垢剂复配研究
Compound additives of phosphorus-free scale inhibitor for low-temperature multi-effect distillation seawater desalination
贾利涛 1刘旭明 1张玉瑶 1董舒宇 1赵锦1
作者信息
- 1. 首钢集团有限公司 技术研究院,北京 100043
- 折叠
摘要
Abstract
The synthesized scale inhibitor AA-AM-HPA terpolymer and several scale inhibitors were selected to carry out a series of phosphorus-free scale inhibitor compound experiments.A dynamic test was carried out by simulating the low temperature and negative pressure evaporation circumstance of LT-MED and the corrosion inhibition performance of scale inhibitors was investigated.Moreover,the mechanism of scale inhibition and corrosion inhibition was explored by electrochemical test and SEM.The results show that MA-AA and AA-AM-HPA have the best scale inhibition effect at the mass ratio of 2:1,and the static scale inhibition rate is 78.50％.The corrosion rate of HA177-2 aluminum brass is 0.127 mm/a at 67℃ when the seawater concentration is doubled.Besides,the results of dynamic simulation test show that when the dosage is 5 mg/L,the scale inhibition rate of calcium and calcium sulfate of the compound scale inhibitor reaches 70.45％and 89.71％,respectively,which is better than that of the selected commercial scale inhibitors.In addition,the electrochemical test and SEM results show that the main mechanism of scale inhibition is lattice distortion,and the compound additive belongs to a mixed-type inhibitor,which mainly suppresses anode reaction.What's more,the compound scale inhibitor reflects a threshold effect.Considering the scale inhibition and corrosion inhibition performance and economy,the dosage of scale inhibitor is recommended to be 5-10 mg/L.关键词
低温多效蒸馏/海水淡化/无磷阻垢剂/复配/缓蚀/动态模拟Key words
LT-MED/seawater desalination/phosphorus-free scale inhibitor/compound/corrosion inhibition/dynamic simulation分类
海洋科学引用本文复制引用
贾利涛,刘旭明,张玉瑶,董舒宇,赵锦..低温多效蒸馏海水淡化无磷阻垢剂复配研究[J].化学工程,2024,52(8):66-70,77,6.
