KQ-2缓蚀阻焦剂在重质酮苯装置水溶液系统的应用

Application of KQ-2 Corrosion Inhibitor in Aqueous Solution Section of Heavy MEK Dewaxing Unit

重质酮苯脱蜡装置的水溶液系统受酸性物质腐蚀严重,对装置的长周期平稳运行的带来不利的影响。通过加注KQ-2缓蚀阻焦剂来控制水溶液的p H值,降低铁离子浓度。实施后脱水塔排水的p H值由弱酸性转为弱碱性,铁离子浓度大幅下降,减轻了管线、设备酸性腐蚀,水溶液系统的腐蚀得到有效控制。

The serious corrosion occurred by acid in aqueous solution section of heavy MEK Dewaxing unit,which brought adverse effect to steady operation in the unit for a long period of time. KQ- 2 corrosion inhibitor was used to control the aqueous solution＇s p H value,and reduce concentration of ferric ion. After implementation,the p H value was raised to weak alkaline from weak acid and concentration of ferric ion was decreased,and aqueous solution corrosion was effectively controlled.